"""Dual-interface Hugging Face Space for clothing aspect-level sentiment analysis."""
from __future__ import annotations

import csv
import html
import json
import re
import traceback
from functools import lru_cache
from pathlib import Path
import tempfile
from typing import Any, Dict, List, Tuple
from urllib.parse import quote

try:
    import huggingface_hub as _hf_hub
    if not hasattr(_hf_hub, "HfFolder"):
        class _HfFolderCompat:
            @staticmethod
            def get_token():
                try:
                    return _hf_hub.get_token()
                except Exception:
                    return None
            @staticmethod
            def save_token(token):
                return None
            @staticmethod
            def delete_token():
                return None
        _hf_hub.HfFolder = _HfFolderCompat
except Exception:
    pass

import gradio as gr

from src import config as cfg
from src.inference import AspectPredictor

ROOT = Path(__file__).resolve().parent
REPORT_DIR = ROOT / "reports"
DATA_DIR = ROOT / "data"
CHECKPOINT_DIR = ROOT / "checkpoints" / "meta_acsa"
CHECKPOINT_PATH = CHECKPOINT_DIR / "best.pt"
META_ENCODER_PATH = ROOT / "data" / "meta_encoder.pkl"
ASPECTS = list(getattr(cfg, "ASPECTS", ["SIZE", "MATERIAL", "QUALITY", "APPEARANCE", "STYLE", "VALUE"]))

ASPECT_DESCRIPTIONS = {
    "SIZE": "Fit, length, sizing accuracy, runs large or small.",
    "MATERIAL": "Fabric feel, thickness, breathability, and comfort.",
    "QUALITY": "Workmanship, durability, seams, and washing performance.",
    "APPEARANCE": "Color, print, pattern, image consistency, and visual look.",
    "STYLE": "Cut, silhouette, fashionability, and styling appeal.",
    "VALUE": "Price fairness, worthiness, return, and repurchase intent.",
}
ASPECT_KEYWORDS = {
    "SIZE": ["size", "fit", "fits", "small", "large", "tight", "loose", "xl", "medium", "waist", "length", "runs"],
    "MATERIAL": ["material", "fabric", "cotton", "polyester", "soft", "scratchy", "thin", "thick", "stretch", "breathable"],
    "QUALITY": ["quality", "stitch", "stitching", "seam", "wash", "durable", "cheap", "ripped", "tear", "button", "zipper"],
    "APPEARANCE": ["look", "looks", "color", "photo", "picture", "print", "design", "pattern", "beautiful", "cute"],
    "STYLE": ["style", "stylish", "flattering", "casual", "formal", "silhouette", "cut", "shape", "cropped"],
    "VALUE": ["price", "worth", "value", "money", "expensive", "cheap", "return", "buy", "recommend"],
}
LABEL_BG = {"Positive": "#dcfce7", "Negative": "#fee2e2", "Not_Mentioned": "#f1f5f9", "Neutral": "#e0f2fe"}
LABEL_FG = {"Positive": "#15803d", "Negative": "#b91c1c", "Not_Mentioned": "#475569", "Neutral": "#0369a1"}

FALLBACK_PRODUCTS = [
    {"name": "Demo - Cotton Graphic Tee", "category": "Tops", "features": "100% Cotton, Slim Fit, Machine Wash Cold, Graphic Print", "categories": "Clothing > Men > T-Shirts > Graphic Tees", "price": 19.99, "average_rating": 4.2, "rating_number": 312, "tags": ["cotton", "casual", "print"], "source": "curated demo fallback", "review": "The size runs really small, I ordered an XL but it fits like a Medium. The fabric feels soft and the print looks great."},
    {"name": "Demo - Stretch Yoga Leggings", "category": "Bottoms", "features": "Nylon Spandex Blend, High Waist, Four-Way Stretch, Moisture Wicking", "categories": "Clothing > Women > Activewear > Leggings", "price": 29.99, "average_rating": 4.5, "rating_number": 1280, "tags": ["stretch", "activewear", "high waist"], "source": "curated demo fallback", "review": "These leggings fit perfectly and the stretch is comfortable. The material is not see-through, but the seams started to loosen after washing."},
    {"name": "Demo - Oversized Denim Jacket", "category": "Outerwear", "features": "Denim Cotton Blend, Oversized Fit, Button Front, Distressed Wash", "categories": "Clothing > Women > Jackets > Denim Jackets", "price": 58.00, "average_rating": 4.0, "rating_number": 447, "tags": ["denim", "oversized", "jacket"], "source": "curated demo fallback", "review": "The oversized style is cute and the color looks like the photo. It is heavier than expected and the buttons feel a little cheap."},
    {"name": "Demo - Floral Summer Dress", "category": "Dresses", "features": "Rayon Blend, Floral Print, A-Line, Lightweight, V-Neck", "categories": "Clothing > Women > Dresses > Summer Dresses", "price": 36.50, "average_rating": 4.3, "rating_number": 864, "tags": ["floral", "summer", "dress"], "source": "curated demo fallback", "review": "The dress looks beautiful and the floral print is exactly as shown. The waist is a bit tight and the fabric wrinkles easily."},
    {"name": "Demo - Fleece Pullover Hoodie", "category": "Tops", "features": "Cotton Polyester Fleece, Regular Fit, Kangaroo Pocket, Ribbed Cuffs", "categories": "Clothing > Unisex > Hoodies > Pullover Hoodies", "price": 42.99, "average_rating": 4.6, "rating_number": 2214, "tags": ["fleece", "hoodie", "warm"], "source": "curated demo fallback", "review": "Very warm and soft hoodie. The quality feels good for the price, though the sleeves are a little long for me."},
    {"name": "Demo - Linen Button-Up Shirt", "category": "Tops", "features": "Linen Cotton Blend, Relaxed Fit, Button Front, Breathable Fabric", "categories": "Clothing > Men > Shirts > Button-Up Shirts", "price": 34.99, "average_rating": 3.9, "rating_number": 186, "tags": ["linen", "breathable", "shirt"], "source": "curated demo fallback", "review": "The shirt is breathable and stylish, but it wrinkles badly and the stitching near one button came loose."},
]


TAG_CANDIDATES = [
    "cotton", "polyester", "linen", "denim", "fleece", "leather", "stretch", "soft",
    "breathable", "warm", "shirt", "dress", "jacket", "shorts", "sneakers",
    "wallet", "jewelry", "casual", "formal", "activewear", "print", "floral",
    "slim fit", "relaxed fit", "oversized", "high waist", "plus size",
]


def _safe_float(value, default=0.0):
    try:
        if value in (None, ""):
            return default
        return float(value)
    except Exception:
        return default


def _parse_numeric_blob(blob):
    text = str(blob or "")
    out = {}
    for key in ("price", "average_rating", "rating_number"):
        match = re.search(rf"{key}\s*=\s*([-+]?\d+(?:\.\d+)?)", text)
        if match:
            out[key] = _safe_float(match.group(1))
    return out


def _tags_from_text(text):
    low = str(text or "").lower()
    tags = [tag for tag in TAG_CANDIDATES if tag in low]
    return list(dict.fromkeys(tags))[:8]


def _load_products_from_json():
    path = DATA_DIR / "demo_products.json"
    try:
        if path.exists():
            products = json.loads(path.read_text(encoding="utf-8"))
            if isinstance(products, list) and products:
                return [_coerce_product(p, i + 1) for i, p in enumerate(products)]
    except Exception:
        pass
    return []


def _load_products_from_catalog():
    path = DATA_DIR / "product_catalog.json"
    try:
        if path.exists():
            products = json.loads(path.read_text(encoding="utf-8"))
            if isinstance(products, list) and products:
                out = []
                for i, item in enumerate(products):
                    item = dict(item)
                    item.setdefault("source", "real product catalog")
                    out.append(_coerce_product(item, i + 1))
                return out
    except Exception:
        pass
    return []


def _load_products_from_explanation_csv():
    path = REPORT_DIR / "explanation_attention_summary.csv"
    if not path.exists():
        return []
    products = {}
    try:
        with path.open("r", encoding="utf-8", newline="") as fh:
            for row in csv.DictReader(fh):
                example_id = str(row.get("example") or "").strip()
                if not example_id or example_id in products:
                    continue
                numeric = _parse_numeric_blob(row.get("numeric"))
                category = str(row.get("category") or "Clothing").strip() or "Clothing"
                features = str(row.get("features") or "").strip()
                categories = str(row.get("categories") or category).strip()
                review = str(row.get("text") or "").strip()
                source = "real held-out explanation example"
                item = {
                    "name": f"Real Review {int(float(example_id)):02d} - {category}",
                    "category": category,
                    "features": features[:700],
                    "categories": categories[:300],
                    "price": numeric.get("price", 0.0),
                    "average_rating": numeric.get("average_rating", _safe_float(row.get("rating"), 0.0)),
                    "rating_number": numeric.get("rating_number", 0.0),
                    "review": review,
                    "source": source,
                }
                item["tags"] = _tags_from_text(" ".join([features, categories, review]))
                products[example_id] = _coerce_product(item, int(float(example_id)))
    except Exception:
        return []
    return list(products.values())


def _coerce_product(item, idx=0):
    features = str(item.get("features") or item.get("features_text") or "")
    categories = str(item.get("categories") or item.get("categories_text") or "")
    review = str(item.get("review") or item.get("review_text") or "")
    category = str(item.get("category") or (categories.split(">")[-1].strip() if categories else "Clothing"))
    name = str(item.get("name") or item.get("title") or f"Product Example {idx:02d}")
    tags = item.get("tags") or _tags_from_text(" ".join([features, categories, review]))
    return {
        "name": name,
        "category": category,
        "features": features,
        "categories": categories,
        "image_url": str(item.get("image_url") or item.get("image") or item.get("main_image") or ""),
        "store": str(item.get("store") or item.get("brand") or "Amazon"),
        "parent_asin": str(item.get("parent_asin") or item.get("asin") or "-"),
        "price": _safe_float(item.get("price")),
        "average_rating": _safe_float(item.get("average_rating")),
        "rating_number": _safe_float(item.get("rating_number")),
        "review": review,
        "tags": list(tags) if isinstance(tags, (list, tuple)) else _tags_from_text(tags),
        "source": str(item.get("source") or "demo product"),
    }


def _load_products():
    products = _load_products_from_catalog() or _load_products_from_json() or _load_products_from_explanation_csv()
    if products:
        return products
    return FALLBACK_PRODUCTS


PRODUCTS = _load_products()


def _safe_float(value: Any, default: float = 0.0) -> float:
    try:
        if value in (None, ""):
            return default
        return float(value)
    except Exception:
        return default


def _esc(value: Any) -> str:
    return html.escape(str(value))


def _short_text(value: Any, limit: int = 220) -> str:
    text = re.sub(r"\s+", " ", str(value or "")).strip()
    if len(text) <= limit:
        return text
    return text[: limit - 3].rstrip() + "..."


def _pct(value: Any) -> str:
    try:
        return f"{float(value) * 100:.2f}%"
    except Exception:
        return "-"


def _num(value: Any) -> str:
    try:
        return f"{float(value):.4f}"
    except Exception:
        return "-"


def _load_json(name: str) -> Dict[str, Any]:
    path = REPORT_DIR / name
    try:
        return json.loads(path.read_text(encoding="utf-8")) if path.exists() else {}
    except Exception:
        return {}


def _load_csv_rows(name: str, columns: List[str], limit: int | None = None) -> List[List[Any]]:
    path = REPORT_DIR / name
    if not path.exists():
        return []
    rows = []
    try:
        with path.open("r", encoding="utf-8", newline="") as fh:
            for row in csv.DictReader(fh):
                rows.append([row.get(col, "") for col in columns])
                if limit and len(rows) >= limit:
                    break
    except Exception:
        return []
    return rows


def _report_image(name: str):
    path = REPORT_DIR / name
    return str(path) if path.exists() else None


def _write_csv_download(name: str, headers: List[str], rows):
    path = Path(tempfile.gettempdir()) / name
    normalized = _normalize_table_rows(rows)
    with path.open("w", encoding="utf-8-sig", newline="") as fh:
        writer = csv.writer(fh)
        writer.writerow(headers)
        writer.writerows(normalized)
    return str(path)


def _download_update(path: str):
    return gr.update(value=path, visible=True)


def _normalize_table_rows(rows) -> List[List[Any]]:
    if rows is None:
        return []
    if hasattr(rows, "values") and hasattr(rows, "columns"):
        return rows.fillna("").values.tolist()
    if isinstance(rows, dict):
        data = rows.get("data") or rows.get("values") or []
        return data if isinstance(data, list) else []
    if isinstance(rows, tuple):
        rows = list(rows)
    if not isinstance(rows, list):
        return []
    out = []
    for row in rows:
        if isinstance(row, dict):
            out.append(list(row.values()))
        elif isinstance(row, (list, tuple)):
            out.append(list(row))
        else:
            out.append([row])
    return out


@lru_cache(maxsize=1)
def _predictor() -> AspectPredictor:
    return AspectPredictor(checkpoint_dir=CHECKPOINT_DIR)


def _product_names() -> List[str]:
    return [p["name"] for p in PRODUCTS]


def _product_names_for_category(category: str) -> List[str]:
    if category == "All":
        return _product_names()
    names = [p["name"] for p in PRODUCTS if p.get("category") == category]
    return names or _product_names()


def _tags_for_category(category: str) -> List[str]:
    products = PRODUCTS if category == "All" else [p for p in PRODUCTS if p.get("category") == category]
    return sorted({tag for p in products for tag in p.get("tags", [])})


def _category_to_metadata_text(category: str) -> str:
    category = str(category or "").strip()
    if not category:
        return "Clothing"
    for product in PRODUCTS:
        if product.get("category") == category and product.get("categories"):
            return product["categories"]
    return f"Clothing > {category}"


def update_product_choices(category: str):
    names = _product_names_for_category(category)
    return gr.update(choices=names, value=names[0] if names else None)


def update_filter_tags(category: str):
    return gr.update(choices=_tags_for_category(category), value=[])


def consumer_category_view(category: str, selected_aspect: str):
    names = _product_names_for_category(category)
    product_name = names[0] if names else _product_names()[0]
    detail, aspects, evidence, rows = consumer_product_view(product_name, selected_aspect)
    return gr.update(choices=names, value=product_name), detail, aspects, evidence, rows


def _get_product(name: str) -> Dict[str, Any]:
    return next((p for p in PRODUCTS if p["name"] == name), PRODUCTS[0])


def _product_visual(product: Dict[str, Any]):
    text = " ".join([
        str(product.get("name", "")),
        str(product.get("category", "")),
        str(product.get("categories", "")),
        " ".join(map(str, product.get("tags", []))),
    ]).lower()
    if any(k in text for k in ["necklace", "bracelet", "jewelry", "strands", "identification"]):
        return "#fef3c7", "#92400e", '<circle cx="160" cy="150" r="58" fill="none" stroke="#92400e" stroke-width="14"/><circle cx="160" cy="214" r="18" fill="#f97316"/><circle cx="115" cy="184" r="10" fill="#f59e0b"/><circle cx="205" cy="184" r="10" fill="#f59e0b"/>'
    if any(k in text for k in ["shoe", "sneaker", "boot", "slipper"]):
        return "#e0f2fe", "#075985", '<path d="M72 222 C106 226 136 212 166 184 C180 206 220 220 258 226 C264 242 253 258 228 258 L92 258 C70 258 58 244 72 222 Z" fill="#075985"/><path d="M132 202 L190 218" stroke="#38bdf8" stroke-width="8" stroke-linecap="round"/>'
    if any(k in text for k in ["wallet", "card case", "money"]):
        return "#f1f5f9", "#334155", '<rect x="72" y="128" width="176" height="122" rx="18" fill="#334155"/><rect x="92" y="152" width="72" height="18" rx="8" fill="#f97316"/><circle cx="218" cy="190" r="13" fill="#cbd5e1"/>'
    if any(k in text for k in ["dress", "cocktail", "apron"]):
        return "#fce7f3", "#9d174d", '<path d="M132 86 L188 86 L208 144 L238 292 L82 292 L112 144 Z" fill="#9d174d"/><path d="M136 92 C146 118 174 118 184 92" fill="none" stroke="#f97316" stroke-width="8" stroke-linecap="round"/>'
    if any(k in text for k in ["short", "leggings", "pants", "jeans"]):
        return "#dcfce7", "#166534", '<path d="M112 88 L154 88 L150 294 L104 294 Z" fill="#166534"/><path d="M166 88 L208 88 L216 294 L170 294 Z" fill="#166534"/><path d="M112 88 L208 88 L208 122 L112 122 Z" fill="#22c55e"/>'
    return "#eff6ff", "#1f2937", '<path d="M116 90 C128 120 192 120 204 90 L238 124 L214 166 L202 150 L202 300 L118 300 L118 150 L106 166 L82 124 Z" fill="#1f2937"/><path d="M126 96 C140 114 180 114 194 96" fill="none" stroke="#f97316" stroke-width="8" stroke-linecap="round"/>'


def _product_image_url(product: Dict[str, Any]) -> str:
    image_url = str(product.get("image_url") or "").strip()
    if image_url:
        return image_url
    category = _short_text(product.get("category") or "Clothing", 28)
    tag = _short_text(product.get("tags", ["fashion"])[0] if product.get("tags") else "fashion", 18)
    bg, ink, shape = _product_visual(product)
    svg = f"""<svg xmlns="http://www.w3.org/2000/svg" width="320" height="420" viewBox="0 0 320 420">
<defs><linearGradient id="g" x1="0" y1="0" x2="1" y2="1"><stop stop-color="{bg}"/><stop offset="1" stop-color="#fff7ed"/></linearGradient></defs>
<rect width="320" height="420" rx="24" fill="url(#g)"/>
<rect x="62" y="58" width="196" height="250" rx="30" fill="#ffffff" stroke="#dbe3ef" stroke-width="4"/>
{shape}
<text x="160" y="350" text-anchor="middle" font-family="Arial, sans-serif" font-size="24" font-weight="700" fill="{ink}">{html.escape(category)}</text>
<text x="160" y="382" text-anchor="middle" font-family="Arial, sans-serif" font-size="18" fill="#475569">{html.escape(tag)}</text>
</svg>"""
    return "data:image/svg+xml;charset=utf-8," + quote(svg)


def _meta(product_or_meta: Dict[str, Any]) -> Dict[str, Any]:
    return {
        "features_text": product_or_meta.get("features", product_or_meta.get("features_text", "")),
        "categories_text": product_or_meta.get("categories", product_or_meta.get("categories_text", "")),
        "price": _safe_float(product_or_meta.get("price")),
        "average_rating": _safe_float(product_or_meta.get("average_rating")),
        "rating_number": _safe_float(product_or_meta.get("rating_number")),
    }


@lru_cache(maxsize=64)
def _predict_product(product_name: str) -> Dict[str, Any]:
    product = _get_product(product_name)
    return _predictor().predict(product["review"], _meta(product))


def _predict_custom(review: str, features: str, categories: str, price: Any, rating: Any, count: Any) -> Dict[str, Any]:
    meta = {"features_text": features or "", "categories_text": _category_to_metadata_text(categories), "price": _safe_float(price), "average_rating": _safe_float(rating), "rating_number": _safe_float(count)}
    return _predictor().predict(review or "No review text provided.", meta)


def _error_html(detail: str) -> str:
    return f'<div class="status bad"><b>Prediction could not run.</b><details><summary>Technical detail</summary><pre>{_esc(detail)}</pre></details></div>'


def _chip(label: str) -> str:
    bg = LABEL_BG.get(label, "#f1f5f9")
    fg = LABEL_FG.get(label, "#334155")
    return f'<span class="chip" style="background:{bg};color:{fg};">{_esc(label)}</span>'


def _keyword_hits(text: str, aspect: str) -> List[str]:
    low = (text or "").lower()
    hits = [kw for kw in ASPECT_KEYWORDS.get(aspect, []) if kw.lower() in low]
    return list(dict.fromkeys(hits))[:8]


def _highlight_review(text: str, aspect: str) -> str:
    safe = _esc(text)
    keys: List[str] = []
    if aspect != "All":
        keys = ASPECT_KEYWORDS.get(aspect, [])
    else:
        for items in ASPECT_KEYWORDS.values():
            keys.extend(items)
    for kw in sorted(set(keys), key=len, reverse=True):
        safe = re.sub(rf"\b({re.escape(kw)})\b", r"<mark>\1</mark>", safe, flags=re.IGNORECASE)
    return f'<div class="review-box">{safe}</div>'


def _overall_html(result: Dict[str, Any]) -> str:
    overall = result.get("overall", {})
    label = overall.get("label", "Unknown")
    conf = _safe_float(overall.get("confidence"))
    probs = overall.get("class_probs", {})
    bars = []
    for name in ["Negative", "Neutral", "Positive"]:
        val = _safe_float(probs.get(name))
        bars.append(f'<div class="prob-row"><span>{name}</span><div class="bar"><i style="width:{val * 100:.1f}%"></i></div><b>{val:.2f}</b></div>')
    fallback = '<div class="small-label">Fallback inference mode used for this sample.</div>' if result.get("fallback") else ""
    return f'<div class="overall-card"><div class="small-label">Overall sentiment</div><div class="overall-main">{_chip(label)} <span class="conf">confidence {conf:.2f}</span></div>{"".join(bars)}{fallback}</div>'


def _join_aspects(items: List[str]) -> str:
    if not items:
        return "-"
    if len(items) == 1:
        return items[0]
    if len(items) == 2:
        return f"{items[0]} and {items[1]}"
    return ", ".join(items[:-1]) + f", and {items[-1]}"


def _recommendation_sentence(result: Dict[str, Any]) -> str:
    details = result.get("aspect_details", {})
    positive = []
    negative = []
    low_risk = []
    for aspect in ASPECTS:
        d = details.get(aspect, {})
        label = d.get("label", result.get("aspects", {}).get(aspect, "Unknown"))
        conf = _safe_float(d.get("confidence"))
        if label == "Positive":
            positive.append(aspect)
        elif label == "Negative":
            negative.append(aspect)
        elif label in {"Neutral", "Not_Mentioned"} or conf < 0.60:
            low_risk.append(aspect)

    if positive and negative:
        return (
            f"This product is recommended because {_join_aspects(positive[:3])} "
            f"{'is' if len(positive[:3]) == 1 else 'are'} positive, while "
            f"{_join_aspects(negative[:2])} should be checked as potential risk."
        )
    if positive:
        remaining = [a for a in ASPECTS if a not in positive]
        return (
            f"This product is recommended because {_join_aspects(positive[:3])} "
            f"{'is' if len(positive[:3]) == 1 else 'are'} positive, while "
            f"{_join_aspects((low_risk or remaining)[:3])} has low risk."
        )
    if negative:
        return (
            f"This product is not a strong recommendation because "
            f"{_join_aspects(negative[:3])} shows negative sentiment risk."
        )
    overall = result.get("overall", {}).get("label", "Neutral")
    return f"This product is a cautious recommendation because the overall signal is {overall} and no strong aspect risk dominates."


def _recommendation_html(result: Dict[str, Any], product_name: str = "") -> str:
    sentence = _recommendation_sentence(result)
    title = f"Recommendation reason for {_esc(product_name)}" if product_name else "Recommendation reason"
    return (
        f'<div class="recommendation-card"><div class="small-label">{title}</div>'
        f'<b>{_esc(sentence)}</b>'
        f'<p class="muted">This explanation is generated from the live model output: overall sentiment, six aspect labels, and confidence scores.</p></div>'
    )


def _aspect_cards(result: Dict[str, Any], review: str, selected_aspect: str) -> str:
    details = result.get("aspect_details", {})
    sources = result.get("top_meta_source_by_aspect", {})
    cards = []
    for aspect in ASPECTS:
        d = details.get(aspect, {})
        label = d.get("label", result.get("aspects", {}).get(aspect, "Unknown"))
        conf = _safe_float(d.get("confidence"))
        hits = _keyword_hits(review, aspect)
        evidence = "".join(f'<span class="evidence-token">{_esc(h)}</span>' for h in hits) or '<span class="muted">No explicit keyword evidence.</span>'
        src = sources.get(aspect, {}) if isinstance(sources, dict) else {}
        src_line = f'<div class="source-line">Top metadata source: <b>{_esc(src.get("source", "-"))}</b> ({_safe_float(src.get("weight")):.2f})</div>' if src else ""
        cls = "focus" if selected_aspect in ("All", aspect) else "dim"
        cards.append(f'<div class="aspect-card {cls}"><div class="aspect-head"><b>{aspect}</b><span>conf {conf:.2f}</span></div>{_chip(label)}<p>{_esc(ASPECT_DESCRIPTIONS.get(aspect, ""))}</p><div class="evidence-row">{evidence}</div>{src_line}</div>')
    return '<div class="aspect-grid">' + "".join(cards) + '</div>'


def _aspect_rows(result: Dict[str, Any], review: str) -> List[List[Any]]:
    rows = []
    for aspect in ASPECTS:
        d = result.get("aspect_details", {}).get(aspect, {})
        label = d.get("label", result.get("aspects", {}).get(aspect, "Unknown"))
        rows.append([aspect, label, round(_safe_float(d.get("confidence")), 4), ", ".join(_keyword_hits(review, aspect)) or "No explicit keyword evidence"])
    return rows


def consumer_product_view(product_name: str, selected_aspect: str) -> Tuple[str, str, str, List[List[Any]]]:
    product = _get_product(product_name)
    try:
        result = _predict_product(product_name)
    except Exception:
        return _error_html(traceback.format_exc(limit=5)), "", "", []
    image_html = (
        f'<img class="product-img" src="{_esc(_product_image_url(product))}" '
        f'alt="{_esc(product["name"])} product image" loading="lazy">'
    )
    store = product.get("store") or "Amazon"
    asin = product.get("parent_asin") or "-"
    detail = (
        f'<div class="product-card"><div class="product-layout">{image_html}<div>'
        f'<h3>{_esc(product["name"])}</h3>'
        f'<p class="muted">{_esc(product["categories"])}</p>'
        f'<div class="meta-pills"><span>Store: {_esc(store)}</span>'
        f'<span>ASIN: {_esc(asin)}</span>'
        f'<span>Source: {_esc(product.get("source", "demo"))}</span>'
        f'<span>Price: ${_safe_float(product["price"]):.2f}</span>'
        f'<span>Rating: {_safe_float(product["average_rating"]):.1f}</span>'
        f'<span>Reviews: {int(_safe_float(product["rating_number"]))}</span></div>'
        f'<p class="metadata-summary"><b>Metadata:</b> {_esc(_short_text(product["features"], 130))}</p>'
        f'</div></div><div class="decision-layout">{_overall_html(result)}'
        f'{_recommendation_html(result, product["name"])}</div></div>'
    )
    evidence = f'<h4>Key review evidence</h4>{_highlight_review(product["review"], selected_aspect)}'
    return detail, _aspect_cards(result, product["review"], selected_aspect), evidence, _aspect_rows(result, product["review"])


def filter_products(aspect: str, sentiment: str, category: str, tags: List[str], min_rating: float) -> Tuple[List[List[Any]], str]:
    rows = []
    best = None
    for product in PRODUCTS:
        if category != "All" and product["category"] != category:
            continue
        if tags and not set(tags).issubset(set(product.get("tags", []))):
            continue
        if _safe_float(product["average_rating"]) < _safe_float(min_rating):
            continue
        try:
            result = _predict_product(product["name"])
        except Exception:
            continue
        if aspect == "Overall":
            d = result.get("overall", {})
        else:
            d = result.get("aspect_details", {}).get(aspect, {})
        label = d.get("label", "Unknown")
        conf = _safe_float(d.get("confidence"))
        if sentiment != "Any" and label != sentiment:
            continue
        rows.append([product["name"], product["category"], label, round(conf, 4), product["average_rating"], product["price"], product["features"]])
        score = conf + 0.03 * _safe_float(product["average_rating"])
        if best is None or score > best[0]:
            best = (score, product["name"], label, conf, result)
    summary = '<div class="note-card">No product matched the current filters.</div>'
    if best:
        summary = (
            f'<div class="note-card"><b>Best match:</b> {_esc(best[1])} - '
            f'{_esc(aspect)} is {_esc(best[2])} with confidence {best[3]:.2f}.'
            f'{_recommendation_html(best[4], best[1])}</div>'
        )
    return rows, summary


def _payload() -> Dict[str, Dict[str, Any]]:
    return {"eval": _load_json("evaluation_comparison.json"), "proposed": _load_json("per_aspect_proposed.json"), "no_meta": _load_json("per_aspect_acsa_no_meta.json"), "ablation": _load_json("ablation_summary.json")}


def model_info_html() -> str:
    data = _payload()
    proposed = data["proposed"].get("overall", {})
    ckpt_mb = CHECKPOINT_PATH.stat().st_size / (1024 * 1024) if CHECKPOINT_PATH.exists() else 0
    rows = [("Training data", "Amazon 2023 Clothing, 100K review sample"), ("Backbone", getattr(cfg, "BERT_MODEL_NAME", "bert-base-uncased")), ("Core method", "Aspect-specific cross-attention metadata fusion"), ("Metadata", "features, categories, price, average rating, rating count"), ("Aspects", ", ".join(ASPECTS)), ("Best checkpoint", f"{ckpt_mb:.1f} MB"), ("Mean aspect F1", _pct(proposed.get("mean_macro_f1"))), ("Mean aspect accuracy", _pct(proposed.get("mean_accuracy")))]
    body = "".join(f"<tr><td>{_esc(k)}</td><td>{_esc(v)}</td></tr>" for k, v in rows)
    return f'<div class="table-wrap"><table class="kv-table">{body}</table></div>'


def research_cards_html() -> str:
    data = _payload()
    cmp = data["eval"].get("overall_3class_comparison", {})
    proposed_aspect = data["proposed"].get("overall", {})
    no_meta_aspect = data["no_meta"].get("overall", {})
    proposed_overall = cmp.get("Proposed_BERT_Meta_Fusion__overall_head", {})
    gain = _safe_float(proposed_aspect.get("mean_macro_f1")) - _safe_float(no_meta_aspect.get("mean_macro_f1"))
    return f'<div class="metric-grid"><div class="metric"><span>Proposed Overall Accuracy</span><b>{_pct(proposed_overall.get("accuracy"))}</b><small>overall head</small></div><div class="metric"><span>Proposed Aspect Accuracy</span><b>{_pct(proposed_aspect.get("mean_accuracy"))}</b><small>six-aspect mean</small></div><div class="metric"><span>Metadata F1 Gain</span><b>+{gain:.4f}</b><small>vs no-metadata BERT ACSA</small></div></div>'


def overall_metric_rows() -> List[List[Any]]:
    csv_rows = _load_csv_rows("overall_model_comparison.csv", ["model", "macro_f1", "accuracy"])
    if csv_rows:
        return [[r[0], _num(r[1]), _num(r[2])] for r in csv_rows]
    cmp = _payload()["eval"].get("overall_3class_comparison", {})
    pairs = [("TF-IDF + Logistic Regression", "Baseline_1_TFIDF_LogReg"), ("BERT Overall Classifier", "Baseline_2_BERT_overall_3class"), ("Proposed BERT + Metadata Fusion", "Proposed_BERT_Meta_Fusion__overall_head")]
    return [[name, _num(cmp.get(key, {}).get("macro_f1")), _num(cmp.get(key, {}).get("accuracy"))] for name, key in pairs]


def aspect_metric_rows() -> List[List[Any]]:
    csv_rows = _load_csv_rows(
        "aspect_level_proposed_vs_no_meta.csv",
        ["aspect", "acsa_no_meta_macro_f1", "proposed_macro_f1", "delta_macro_f1", "acsa_no_meta_accuracy", "proposed_accuracy", "delta_accuracy"],
    )
    if csv_rows:
        return [[r[0], _num(r[1]), _num(r[2]), f"{_safe_float(r[3]):+.4f}", _num(r[4]), _num(r[5]), f"{_safe_float(r[6]):+.4f}"] for r in csv_rows]
    data = _payload()
    proposed = data["proposed"].get("per_aspect", {})
    no_meta = data["no_meta"].get("per_aspect", {})
    rows = []
    for aspect in ASPECTS:
        p = proposed.get(aspect, {})
        b = no_meta.get(aspect, {})
        f1_delta = _safe_float(p.get("macro_f1")) - _safe_float(b.get("macro_f1"))
        acc_delta = _safe_float(p.get("accuracy")) - _safe_float(b.get("accuracy"))
        rows.append([aspect, _num(b.get("macro_f1")), _num(p.get("macro_f1")), f"{f1_delta:+.4f}", _num(b.get("accuracy")), _num(p.get("accuracy")), f"{acc_delta:+.4f}"])
    return rows


def ablation_rows() -> List[List[Any]]:
    ab = _payload()["ablation"]
    labels = {"Proposed": "Proposed cross-attention fusion", "A1_no_text_meta": "A1 remove text metadata", "A2_no_numeric_meta": "A2 remove numerical metadata", "A3_concat_fusion": "A3 concat fusion"}
    return [[labels.get(k, k), _num(ab.get(k, {}).get("mean_macro_f1")), _num(ab.get(k, {}).get("mean_accuracy"))] for k in labels if k in ab]


def meta_source_rows() -> List[List[Any]]:
    rows = _load_csv_rows(
        "explanation_attention_meta_source_summary.csv",
        ["aspect", "top_meta_source", "source_share", "mean_top_meta_weight", "mean_attention_focus"],
    )
    if not rows:
        rows = _load_csv_rows(
            "explanation_ig_meta_source_summary.csv",
            ["aspect", "top_meta_source", "source_share", "mean_top_meta_weight", "mean_attention_focus"],
        )
    return [[r[0], r[1], _pct(r[2]), _num(r[3]), _num(r[4])] for r in rows]


def report_asset_rows() -> List[List[Any]]:
    groups = [
        ("Evaluation", "overall_model_comparison.csv, aspect_level_proposed_vs_no_meta.csv"),
        ("Confusion matrices", "confusion_matrix_proposed_overall_head.png and per-aspect PNGs"),
        ("Ablation", "ablation_summary.json, ablation_A1/A2/A3.json"),
        ("Visualization", "aspect_distribution.png and category_aspect_*_heatmap.png"),
        ("Explanation", "explanation_*_summary.csv and explanation_*_meta_source_summary.csv"),
    ]
    return [[name, assets] for name, assets in groups]


def refresh_research_outputs():
    return (
        research_cards_html(),
        overall_metric_rows(),
        aspect_metric_rows(),
        ablation_rows(),
        meta_source_rows(),
    )


def merchant_product_scores(metric: str) -> List[List[Any]]:
    rows = []
    for product in PRODUCTS:
        try:
            result = _predict_product(product["name"])
        except Exception as exc:
            return [["ERROR", "Model loading failed", metric, type(exc).__name__, 0.0, 0.0, 0.0]]
        d = result.get("overall", {}) if metric == "Overall" else result.get("aspect_details", {}).get(metric, {})
        rows.append([product["name"], product["category"], metric, d.get("label", "Unknown"), round(_safe_float(d.get("confidence")), 4), product["price"], product["average_rating"]])
    return rows or [["No rows", "Try Refresh", metric, "-", 0.0, 0.0, 0.0]]


def merchant_aspect_overview() -> List[List[Any]]:
    rows = []
    for aspect in ASPECTS:
        neg_count, top_name, top_conf, top_reason = 0, "-", 0.0, "-"
        for product in PRODUCTS:
            try:
                result = _predict_product(product["name"])
            except Exception:
                continue
            d = result.get("aspect_details", {}).get(aspect, {})
            if d.get("label") != "Negative":
                continue
            neg_count += 1
            conf = _safe_float(d.get("confidence"))
            if conf >= top_conf:
                hits = _keyword_hits(product.get("review", ""), aspect)
                top_name = product["name"]
                top_conf = conf
                top_reason = ", ".join(hits) if hits else _short_text(product.get("review") or product.get("features"), 90)
        rows.append([aspect, neg_count, top_name, round(top_conf, 4), top_reason])
    return rows


def merchant_score_filter(aspect: str, prediction: str, category: str) -> List[List[Any]]:
    rows = []
    for product in PRODUCTS:
        if category != "All" and product.get("category") != category:
            continue
        try:
            result = _predict_product(product["name"])
        except Exception:
            continue
        d = result.get("overall", {}) if aspect == "Overall" else result.get("aspect_details", {}).get(aspect, {})
        label = d.get("label", "Unknown")
        if prediction != "Any" and label != prediction:
            continue
        rows.append([
            product["name"], product["category"], aspect, label,
            round(_safe_float(d.get("confidence")), 4),
            product["price"], product["average_rating"],
        ])
    return rows or [["No matching products", category, aspect, prediction, 0.0, 0.0, 0.0]]


def export_merchant_scores(rows):
    return _download_update(_write_csv_download(
        "merchant_product_scores.csv",
        ["Product", "Category", "Metric", "Prediction", "Confidence", "Price", "Rating"],
        rows,
    ))


def negative_product_spotlight(limit: int = 6) -> str:
    cards = []
    used_products = set()
    for aspect in ASPECTS:
        candidates = []
        for product in PRODUCTS:
            try:
                result = _predict_product(product["name"])
            except Exception:
                continue
            d = result.get("aspect_details", {}).get(aspect, {})
            if d.get("label") != "Negative":
                continue
            conf = _safe_float(d.get("confidence"))
            hits = _keyword_hits(product.get("review", ""), aspect)
            reason = ", ".join(hits[:3]) if hits else _short_text(product.get("review") or product.get("features"), 48)
            candidates.append((conf, product, reason))
        candidates.sort(key=lambda x: x[0], reverse=True)
        best = next((item for item in candidates if item[1]["name"] not in used_products), None)
        if best is None and candidates:
            best = candidates[0]
        if best is None:
            cards.append(
                f'<div class="negative-card compact-negative"><h4>{aspect}</h4>'
                '<div class="empty-negative">No strong negative sample</div></div>'
            )
            continue
        conf, product, reason = best
        used_products.add(product["name"])
        img = f'<img class="mini-product-img" src="{_esc(_product_image_url(product))}" alt="{_esc(product["name"])}">'
        cards.append(
            f'<div class="negative-card compact-negative"><h4>{aspect}</h4>'
            f'<div class="negative-body">{img}<div><b>{_esc(_short_text(product["name"], 42))}</b>'
            f'<div class="small-label">{_esc(product["category"])} | conf {conf:.2f}</div>'
            f'<p>{_esc(_short_text(reason, 56))}</p></div></div></div>'
        )
    return '<div class="negative-grid">' + "".join(cards[:limit]) + '</div>'

def _metadata_risks(features: str, categories: str, price: Any, rating: Any, count: Any) -> Dict[str, str]:
    text = f"{features} {categories}".lower()
    risks = {}
    if any(x in text for x in ["slim", "oversized", "cropped", "one size", "tight", "relaxed"]):
        risks["SIZE"] = "Fit wording may create sizing expectation risk."
    if any(x in text for x in ["polyester", "synthetic", "faux", "thin", "lightweight"]):
        risks["MATERIAL"] = "Material description may affect comfort perception."
    if any(x in text for x in ["delicate", "hand wash", "button", "zipper", "distressed"]) or _safe_float(rating, 4.0) < 4.0:
        risks["QUALITY"] = "Durability or construction may need QA attention."
    if any(x in text for x in ["print", "floral", "color", "washed", "distressed"]):
        risks["APPEARANCE"] = "Visual consistency should be checked against product photos."
    if any(x in text for x in ["oversized", "slim", "cropped", "a-line", "v-neck"]):
        risks["STYLE"] = "Style-specific expectations may split customer opinions."
    if _safe_float(price) > 60 or _safe_float(rating, 4.0) < 4.0 or _safe_float(count) < 50:
        risks["VALUE"] = "Price, low rating, or low review volume may raise value risk."
    return risks


def screen_new_product(features: str, categories: str, price: Any, rating: Any, count: Any, focus: str) -> Tuple[str, List[List[Any]]]:
    review = "This is a new clothing item. Customers may comment on fit, fabric, quality, appearance, style, and value."
    try:
        result = _predict_custom(review, features, categories, price, rating, count)
    except Exception:
        return _error_html(traceback.format_exc(limit=5)), []
    rules = _metadata_risks(features, categories, price, rating, count)
    rows, high = [], []
    for aspect in ASPECTS:
        if focus != "All" and aspect != focus:
            continue
        d = result.get("aspect_details", {}).get(aspect, {})
        label = d.get("label", "Unknown")
        conf = _safe_float(d.get("confidence"))
        risk = "High" if label == "Negative" or aspect in rules else "Medium" if conf < 0.65 else "Low"
        if risk == "High":
            high.append(aspect)
        rows.append([aspect, risk, label, round(conf, 4), rules.get(aspect, "No strong metadata risk signal.")])
    summary = ", ".join(high) if high else "No high-risk aspect detected from metadata."
    return f'<div class="note-card"><b>New product risk focus:</b> {_esc(summary)}<br><span class="muted">This is a metadata screening tool, not a replacement for real review evaluation.</span></div>', rows


def import_new_product_payload(file_obj):
    if not file_obj:
        return gr.update(), gr.update(), gr.update(), gr.update(), gr.update(), gr.update()
    path = Path(getattr(file_obj, "name", file_obj))
    try:
        if path.suffix.lower() == ".json":
            data = json.loads(path.read_text(encoding="utf-8"))
        else:
            with path.open("r", encoding="utf-8-sig", newline="") as fh:
                data = next(csv.DictReader(fh), {})
    except Exception:
        data = {}
    return (
        data.get("features") or data.get("features_text") or "",
        data.get("categories") or data.get("categories_text") or "",
        _safe_float(data.get("price"), 0.0),
        _safe_float(data.get("average_rating") or data.get("rating"), 4.0),
        _safe_float(data.get("rating_number") or data.get("rating_count"), 0.0),
        data.get("focus_aspect") or data.get("focus") or "All",
    )


def export_risk_rows(rows):
    return _download_update(_write_csv_download(
        "new_product_metadata_risk.csv",
        ["Aspect", "Risk Level", "Model Signal", "Confidence", "Reason"],
        rows,
    ))


def _read_uploaded_records(file_obj) -> List[Dict[str, Any]]:
    if not file_obj:
        return []
    path = Path(getattr(file_obj, "name", file_obj))
    try:
        if path.suffix.lower() == ".json":
            data = json.loads(path.read_text(encoding="utf-8"))
            if isinstance(data, dict):
                data = data.get("items") or data.get("data") or [data]
            return data if isinstance(data, list) else []
        with path.open("r", encoding="utf-8-sig", newline="") as fh:
            return list(csv.DictReader(fh))
    except Exception:
        return []


def download_new_product_template():
    rows = [[
        "Cotton Polyester Blend, Slim Fit, Graphic Print, Machine Wash",
        "T-Shirts",
        29.99,
        4.1,
        35,
        "All",
    ]]
    return _download_update(_write_csv_download(
        "new_product_metadata_template.csv",
        ["features", "category", "price", "average_rating", "rating_number", "focus_aspect"],
        rows,
    ))


def batch_screen_new_products(file_obj) -> Tuple[str, List[List[Any]]]:
    records = _read_uploaded_records(file_obj)
    if not records:
        return '<div class="note-card">Upload a CSV or JSON file first.</div>', []
    rows = []
    for i, data in enumerate(records, 1):
        features = data.get("features") or data.get("features_text") or ""
        categories = data.get("category") or data.get("categories") or data.get("categories_text") or ""
        price = _safe_float(data.get("price"), 0.0)
        rating = _safe_float(data.get("average_rating") or data.get("rating"), 4.0)
        count = _safe_float(data.get("rating_number") or data.get("rating_count"), 0.0)
        focus = data.get("focus_aspect") or data.get("focus") or "All"
        _, detail_rows = screen_new_product(features, categories, price, rating, count, focus)
        high = [r[0] for r in detail_rows if r[1] == "High"]
        rows.append([
            f"Product {i}",
            "High" if high else "Low",
            focus,
            len(high),
            f"{_short_text(categories, 55)} | high-risk aspects: {', '.join(high) or 'None'}",
        ])
    return f'<div class="note-card"><b>Batch screening completed:</b> {len(rows)} products analyzed.</div>', rows


def external_review_predict(review: str, features: str, categories: str, price: Any, rating: Any, count: Any, selected_aspect: str) -> Tuple[str, str, List[List[Any]]]:
    try:
        result = _predict_custom(review, features, categories, price, rating, count)
    except Exception:
        return _error_html(traceback.format_exc(limit=5)), "", []
    return _overall_html(result), _aspect_cards(result, review or "", selected_aspect), _aspect_rows(result, review or "")


def import_external_review_payload(file_obj):
    if not file_obj:
        return gr.update(), gr.update(), gr.update(), gr.update(), gr.update(), gr.update(), gr.update()
    path = Path(getattr(file_obj, "name", file_obj))
    try:
        if path.suffix.lower() == ".json":
            data = json.loads(path.read_text(encoding="utf-8"))
        else:
            with path.open("r", encoding="utf-8-sig", newline="") as fh:
                data = next(csv.DictReader(fh), {})
    except Exception:
        data = {}
    return (
        data.get("review") or data.get("review_text") or "",
        data.get("features") or data.get("features_text") or "",
        data.get("categories") or data.get("categories_text") or "",
        _safe_float(data.get("price"), 0.0),
        _safe_float(data.get("average_rating") or data.get("rating"), 4.0),
        _safe_float(data.get("rating_number") or data.get("rating_count"), 0.0),
        data.get("highlight_aspect") or data.get("aspect") or "All",
    )


def export_external_rows(rows):
    return _download_update(_write_csv_download(
        "external_review_prediction.csv",
        ["Aspect", "Prediction", "Confidence", "Key review evidence"],
        rows,
    ))


def download_external_review_template():
    rows = [[
        "The fabric is soft and the color looks good, but it runs small.",
        "Cotton Blend, Slim Fit, Zipper Closure",
        "Jackets",
        39.99,
        4.2,
        312,
        "All",
    ]]
    return _download_update(_write_csv_download(
        "external_review_template.csv",
        ["review", "features", "category", "price", "average_rating", "rating_number", "highlight_aspect"],
        rows,
    ))


def batch_external_review_predict(file_obj) -> Tuple[str, str, List[List[Any]]]:
    records = _read_uploaded_records(file_obj)
    if not records:
        return '<div class="note-card">Upload a CSV or JSON file first.</div>', "", []
    rows = []
    for i, data in enumerate(records, 1):
        review = data.get("review") or data.get("review_text") or ""
        features = data.get("features") or data.get("features_text") or ""
        categories = data.get("category") or data.get("categories") or data.get("categories_text") or ""
        price = _safe_float(data.get("price"), 0.0)
        rating = _safe_float(data.get("average_rating") or data.get("rating"), 4.0)
        count = _safe_float(data.get("rating_number") or data.get("rating_count"), 0.0)
        aspect = data.get("highlight_aspect") or data.get("aspect") or "All"
        overall_html, _, detail_rows = external_review_predict(review, features, categories, price, rating, count, aspect)
        negative = [r[0] for r in detail_rows if r[1] == "Negative"]
        rows.append([
            f"Review {i}",
            f"Negative: {', '.join(negative)}" if negative else "No major negative",
            len(negative),
            f"{_short_text(review, 70)} | {_short_text(categories, 45)}",
        ])
    return f'<div class="note-card"><b>Batch review prediction completed:</b> {len(rows)} reviews analyzed.</div>', "", rows


def toggle_analysis_mode(mode: str):
    single = mode.startswith("Single")
    return gr.update(visible=single), gr.update(visible=not single)


def _status_html() -> str:
    missing = []
    if not CHECKPOINT_PATH.exists() or CHECKPOINT_PATH.stat().st_size < 1024 * 1024:
        missing.append("checkpoints/meta_acsa/best.pt")
    if not META_ENCODER_PATH.exists() or META_ENCODER_PATH.stat().st_size < 1024:
        missing.append("data/meta_encoder.pkl")
    if missing:
        return '<div class="status bad"><b>Model artifacts missing:</b> ' + _esc(", ".join(missing)) + '</div>'
    return '<div class="status ok"><b>Model ready.</b> 10W0716 checkpoint and metadata encoder are available.</div>'


CSS = """
:root { --accent:#f97316; --ink:#0f172a; --muted:#475569; --line:#dbe3ef; --panel:#ffffff; }
.gradio-container { max-width:1240px !important; margin:auto !important; color:var(--ink); }
#hero { border:1px solid #bfdbfe; background:#eff6ff; border-left:6px solid var(--accent); border-radius:8px; padding:18px 22px; margin:8px 0 14px; box-shadow:0 1px 6px rgba(15,23,42,.06); }
#hero .eyebrow { margin:0 0 7px; color:#9a3412; font-size:13px; font-weight:800; letter-spacing:.04em; text-transform:uppercase; }
#hero h1 { margin:0 0 8px; font-size:28px; line-height:1.15; color:#0f172a; font-weight:800; }
#hero p { margin:0; color:#1e3a8a; max-width:920px; }
#hero .hero-pills { display:flex; flex-wrap:wrap; gap:8px; margin-top:12px; }
#hero .hero-pills span { color:#1e293b; background:#ffffff; border:1px solid #bfdbfe; border-radius:999px; padding:5px 10px; font-size:13px; font-weight:600; }
button.primary, .gradio-button.primary { background:var(--accent) !important; border-color:var(--accent) !important; color:white !important; font-weight:700 !important; }
.status { border-radius:8px; padding:10px 13px; margin:6px 0 14px; border:1px solid var(--line); }
.status.ok { background:#ecfdf5; border-color:#86efac; color:#065f46; }
.status.bad { background:#fff1f2; border-color:#fda4af; color:#991b1b; }
.product-card, .overall-card, .note-card { border:1px solid var(--line); border-radius:8px; padding:16px; background:white; }
.product-layout { display:grid; grid-template-columns:96px 1fr; gap:12px; align-items:start; }
.product-img { width:96px; height:118px; object-fit:cover; border-radius:8px; border:1px solid var(--line); background:#f8fafc; }
.product-card h3 { margin:0 0 6px; font-size:18px; line-height:1.25; }
.product-card p { margin:7px 0; }
.metadata-summary { color:#334155; font-size:13px; line-height:1.45; }
.decision-layout { display:grid; grid-template-columns:1fr 1fr; gap:10px; margin-top:10px; align-items:stretch; }
.decision-layout .overall-card, .decision-layout .recommendation-card { margin:0; padding:12px; }
.decision-layout .recommendation-card .small-label { display:none; }
.decision-layout .recommendation-card p { display:none; }
.recommendation-card { border:1px solid #fed7aa; border-left:5px solid var(--accent); background:#fff7ed; border-radius:8px; padding:13px 14px; margin:12px 0; }
.recommendation-card p { margin:7px 0 0; }
.muted { color:var(--muted); }
.meta-pills { display:flex; flex-wrap:wrap; gap:8px; margin:10px 0; }
.meta-pills span { background:#f1f5f9; border:1px solid #e2e8f0; border-radius:999px; padding:5px 9px; font-size:13px; }
.chip { display:inline-block; border-radius:999px; padding:5px 10px; font-weight:700; font-size:13px; }
.conf { color:#334155; font-size:13px; margin-left:8px; }
.small-label { color:#475569; font-size:13px; margin-bottom:8px; }
.prob-row { display:grid; grid-template-columns:82px 1fr 44px; gap:8px; align-items:center; font-size:13px; margin:6px 0; }
.bar { height:8px; background:#e2e8f0; border-radius:999px; overflow:hidden; }
.bar i { display:block; height:100%; background:var(--accent); }
.aspect-grid { display:grid; grid-template-columns:repeat(3, minmax(0, 1fr)); gap:10px; }
.aspect-card { border:1px solid var(--line); border-top:4px solid #64748b; border-radius:8px; padding:12px; background:white; min-height:145px; }
.aspect-card.focus { border-top-color:var(--accent); box-shadow:0 2px 10px rgba(15,23,42,.08); }
.aspect-card.dim { opacity:.66; }
.aspect-head { display:flex; justify-content:space-between; align-items:center; margin-bottom:8px; }
.aspect-head span, .source-line { color:#475569; font-size:12px; }
.aspect-card p { margin:8px 0; color:#334155; font-size:13px; }
.evidence-row { display:flex; flex-wrap:wrap; gap:5px; margin-top:8px; }
.evidence-token { color:#1d4ed8; background:#eef2ff; border:1px solid #bfdbfe; border-radius:999px; padding:3px 8px; font-size:12px; }
.review-box { border:1px dashed #cbd5e1; background:#f8fafc; border-radius:8px; padding:14px; line-height:1.6; }
mark { background:#fde68a; color:#111827; border-radius:4px; padding:1px 3px; }
.metric-grid { display:grid; grid-template-columns:repeat(3, 1fr); gap:12px; margin:8px 0 12px; }
.metric { border:1px solid var(--line); border-radius:8px; padding:14px; background:white; }
.metric span { display:block; color:#334155; font-size:13px; }
.metric b { display:block; font-size:28px; margin:6px 0; }
.metric small { color:#475569; }
.table-wrap { border:1px solid var(--line); border-radius:8px; overflow:hidden; background:white; }
.kv-table { width:100%; border-collapse:collapse; }
.kv-table td { border-bottom:1px solid #e2e8f0; padding:9px 12px; }
.kv-table td:first-child { width:220px; color:#334155; font-weight:700; background:#f8fafc; }
.compact-note { color:#475569; font-size:13px; margin:4px 0 10px; }
.module-head { display:flex; justify-content:space-between; align-items:center; gap:12px; margin:0 0 10px; }
.info-tip { position:relative; display:inline-flex; align-items:center; justify-content:center; width:24px; height:24px; border-radius:999px; border:1px solid #bfdbfe; background:#eff6ff; color:#1e40af; font-weight:800; cursor:help; }
.info-tip .tip-content { display:none; position:absolute; right:0; top:30px; z-index:20; width:420px; max-width:80vw; background:white; border:1px solid var(--line); border-radius:8px; padding:10px; box-shadow:0 12px 30px rgba(15,23,42,.16); }
.info-tip:hover .tip-content { display:block; }
.negative-grid { display:grid; grid-template-columns:repeat(6, minmax(0, 1fr)); gap:10px; margin:8px 0 14px; }
.negative-card { display:grid; grid-template-columns:64px 1fr; gap:10px; border:1px solid #fecaca; border-left:4px solid #ef4444; border-radius:8px; padding:10px; background:#fffafa; }
.negative-card p { margin:5px 0 0; color:#334155; font-size:13px; }
.compact-negative { display:block; min-height:178px; }
.compact-negative h4 { margin:0 0 8px; color:#b91c1c; font-size:14px; letter-spacing:.02em; }
.negative-body { display:grid; grid-template-columns:54px 1fr; gap:8px; align-items:start; }
.negative-body b { display:block; font-size:13px; line-height:1.25; }
.negative-body p { font-size:12px; line-height:1.35; }
.empty-negative { color:#64748b; font-size:12px; border:1px dashed #fecaca; border-radius:8px; padding:14px 8px; background:white; }
.mini-product-img { width:64px; height:76px; object-fit:cover; border-radius:6px; border:1px solid var(--line); background:#f8fafc; }
.negative-body .mini-product-img { width:54px; height:64px; }
@media (max-width:1100px) { .negative-grid { grid-template-columns:repeat(3, minmax(0, 1fr)); } }
@media (max-width:860px) { .aspect-grid, .metric-grid, .product-layout, .decision-layout, .negative-grid { grid-template-columns:1fr; } .product-img { width:100%; height:180px; } }
"""


def build_app() -> gr.Blocks:
    categories = ["All"] + sorted({p["category"] for p in PRODUCTS})
    merchant_categories = categories[1:] or ["Clothing"]
    default_merchant_category = merchant_categories[0]
    tags = sorted({tag for p in PRODUCTS for tag in p.get("tags", [])})
    with gr.Blocks(css=CSS, title="Clothing Sentiment Analysis") as demo:
        gr.HTML('<div id="hero"><div class="eyebrow">BERT + Metadata Cross-Attention</div><h1>Clothing Review Sentiment Intelligence App</h1><p>Explore overall sentiment, six aspect-level opinions, metadata-driven risks, and updated 10W experiment reports in a compact customer decision-support prototype.</p><div class="hero-pills"><span>Consumer decision support</span><span>Merchant diagnostics</span><span>Research dashboard</span></div></div>')
        gr.HTML(_status_html())
        with gr.Tabs():
            with gr.Tab("Consumer Interface"):
                with gr.Row():
                    with gr.Column(scale=4):
                        consumer_category = gr.Dropdown(categories, value="All", label="Choose category")
                        product_select = gr.Dropdown(_product_names(), value=_product_names()[0], label="Choose a product")
                        consumer_aspect = gr.Dropdown(["All"] + ASPECTS, value="All", label="Highlight aspect evidence")
                        product_detail = gr.HTML()
                    with gr.Column(scale=6):
                        aspect_html = gr.HTML()
                        evidence_html = gr.HTML()
                consumer_table = gr.Dataframe(headers=["Aspect", "Prediction", "Confidence", "Key review evidence"], datatype=["str", "str", "number", "str"], label="Aspect-level result table", interactive=False)
                with gr.Accordion("Product Finder filters", open=False):
                    gr.HTML('<div class="compact-note">Optional: filter products by aspect sentiment, category, tags, and minimum rating.</div>')
                    with gr.Row():
                        with gr.Column(scale=1):
                            filter_aspect = gr.Dropdown(["Overall"] + ASPECTS, value="Overall", label="Target metric")
                            filter_sentiment = gr.Radio(["Any", "Positive", "Negative", "Not_Mentioned", "Neutral"], value="Any", label="Preferred prediction")
                            filter_category = gr.Dropdown(categories, value="All", label="Category")
                        with gr.Column(scale=1):
                            filter_tags = gr.CheckboxGroup(tags, label="Required metadata tags")
                            min_rating = gr.Slider(3.0, 5.0, value=4.0, step=0.1, label="Minimum product rating")
                    filter_btn = gr.Button("Filter Products", variant="primary")
                    filter_summary = gr.HTML()
                    filter_table = gr.Dataframe(headers=["Product", "Category", "Prediction", "Confidence", "Rating", "Price", "Metadata"], datatype=["str", "str", "str", "number", "number", "number", "str"], interactive=False, label="Filtered product candidates")
                consumer_category.change(consumer_category_view, [consumer_category, consumer_aspect], [product_select, product_detail, aspect_html, evidence_html, consumer_table])
                product_select.change(consumer_product_view, [product_select, consumer_aspect], [product_detail, aspect_html, evidence_html, consumer_table])
                consumer_aspect.change(consumer_product_view, [product_select, consumer_aspect], [product_detail, aspect_html, evidence_html, consumer_table])
                filter_category.change(update_filter_tags, filter_category, filter_tags)
                filter_btn.click(filter_products, [filter_aspect, filter_sentiment, filter_category, filter_tags, min_rating], [filter_table, filter_summary])

            with gr.Tab("Merchant Interface"):
                gr.HTML('<div class="module-head"><h3>Product Score Monitor</h3><span class="info-tip">i<span class="tip-content">' + model_info_html() + '</span></span></div>')
                gr.HTML('<div class="small-label">Most negative products across the six aspects</div>')
                negative_spotlight = gr.HTML('<div class="note-card">Loading most negative products...</div>')
                with gr.Accordion("Score filters and export", open=True):
                    with gr.Row():
                        merchant_metric = gr.Dropdown(["Overall"] + ASPECTS, value="Overall", label="Aspect")
                        merchant_prediction = gr.Dropdown(["Any", "Positive", "Negative", "Not_Mentioned", "Neutral"], value="Any", label="Prediction")
                        merchant_category = gr.Dropdown(categories, value="All", label="Category")
                    merchant_scores = gr.Dataframe(headers=["Product", "Category", "Metric", "Prediction", "Confidence", "Price", "Rating"], value=[["Click Apply Score Filter", "", "", "", 0.0, 0.0, 0.0]], datatype=["str", "str", "str", "str", "number", "number", "number"], interactive=False)
                    with gr.Row():
                        refresh_scores = gr.Button("Apply Score Filter", variant="primary")
                        export_scores = gr.Button("Export Score List")
                    merchant_scores_file = gr.File(label="Downloaded score CSV", interactive=False, visible=False)
                with gr.Accordion("New Product Metadata Risk Screening", open=False):
                    risk_mode = gr.Radio(["Single product analysis", "Batch import analysis"], value="Single product analysis", label="Analysis mode")
                    with gr.Row():
                        with gr.Column(scale=1):
                            with gr.Group(visible=True) as risk_single_group:
                                new_features = gr.Textbox("Cotton Polyester Blend, Slim Fit, Graphic Print, Machine Wash", label="New product features", lines=4)
                                new_categories = gr.Dropdown(merchant_categories, value=default_merchant_category, label="New product category")
                                with gr.Row():
                                    new_price = gr.Number(29.99, label="Price")
                                    new_rating = gr.Number(4.1, label="Expected or early average rating")
                                with gr.Row():
                                    new_count = gr.Number(35, label="Expected or early rating count")
                                    new_focus = gr.Dropdown(["All"] + ASPECTS, value="All", label="Focus aspect")
                                screen_btn = gr.Button("Predict Metadata Risk", variant="primary")
                            with gr.Group(visible=False) as risk_batch_group:
                                new_import = gr.File(label="Import product metadata JSON/CSV")
                                with gr.Row():
                                    new_template = gr.Button("Download Import Template")
                                    batch_screen_btn = gr.Button("Batch Analyze Metadata", variant="primary")
                                new_template_file = gr.File(label="Template CSV", interactive=False, visible=False)
                        with gr.Column(scale=1):
                            risk_summary = gr.HTML()
                            risk_table = gr.Dataframe(headers=["Aspect", "Risk Level", "Model Signal", "Confidence", "Reason"], value=[["Click Predict Metadata Risk", "", "", 0.0, ""]], datatype=["str", "str", "str", "number", "str"], interactive=False)
                            export_risk = gr.Button("Export Risk Result")
                            risk_file = gr.File(label="Downloaded risk CSV", interactive=False, visible=False)
                with gr.Accordion("External Review Prediction", open=False):
                    ext_mode = gr.Radio(["Single product analysis", "Batch import analysis"], value="Single product analysis", label="Analysis mode")
                    with gr.Row():
                        with gr.Column(scale=1):
                            with gr.Group(visible=True) as ext_single_group:
                                external_review = gr.Textbox("The fabric is soft and the color looks good, but it runs small and the zipper feels weak.", label="External customer review", lines=5)
                                with gr.Row():
                                    ext_features = gr.Textbox("Cotton Blend, Slim Fit, Zipper Closure", label="Product features", lines=3)
                                    ext_categories = gr.Dropdown(merchant_categories, value=default_merchant_category, label="Product category")
                                with gr.Row():
                                    ext_price = gr.Number(39.99, label="Price")
                                    ext_rating = gr.Number(4.2, label="Average rating")
                                with gr.Row():
                                    ext_count = gr.Number(312, label="Rating count")
                                    ext_aspect = gr.Dropdown(["All"] + ASPECTS, value="All", label="Highlight aspect")
                                external_btn = gr.Button("Analyze External Review", variant="primary")
                            with gr.Group(visible=False) as ext_batch_group:
                                ext_import = gr.File(label="Import review metadata JSON/CSV")
                                with gr.Row():
                                    ext_template = gr.Button("Download Import Template")
                                    batch_external_btn = gr.Button("Batch Analyze Reviews", variant="primary")
                                ext_template_file = gr.File(label="Template CSV", interactive=False, visible=False)
                        with gr.Column(scale=1):
                            ext_overall = gr.HTML()
                            ext_aspects = gr.HTML()
                            ext_table = gr.Dataframe(headers=["Aspect", "Prediction", "Confidence", "Key review evidence"], value=[["Click Analyze External Review", "", 0.0, ""]], datatype=["str", "str", "number", "str"], interactive=False)
                            export_ext = gr.Button("Export Review Result")
                            ext_file = gr.File(label="Downloaded review CSV", interactive=False, visible=False)
                refresh_scores.click(merchant_score_filter, [merchant_metric, merchant_prediction, merchant_category], merchant_scores)
                export_scores.click(export_merchant_scores, merchant_scores, merchant_scores_file)
                merchant_metric.change(merchant_score_filter, [merchant_metric, merchant_prediction, merchant_category], merchant_scores)
                merchant_prediction.change(merchant_score_filter, [merchant_metric, merchant_prediction, merchant_category], merchant_scores)
                merchant_category.change(merchant_score_filter, [merchant_metric, merchant_prediction, merchant_category], merchant_scores)
                risk_mode.change(toggle_analysis_mode, risk_mode, [risk_single_group, risk_batch_group])
                screen_btn.click(screen_new_product, [new_features, new_categories, new_price, new_rating, new_count, new_focus], [risk_summary, risk_table])
                new_template.click(download_new_product_template, None, new_template_file)
                batch_screen_btn.click(batch_screen_new_products, new_import, [risk_summary, risk_table])
                export_risk.click(export_risk_rows, risk_table, risk_file)
                ext_mode.change(toggle_analysis_mode, ext_mode, [ext_single_group, ext_batch_group])
                external_btn.click(external_review_predict, [external_review, ext_features, ext_categories, ext_price, ext_rating, ext_count, ext_aspect], [ext_overall, ext_aspects, ext_table])
                ext_template.click(download_external_review_template, None, ext_template_file)
                batch_external_btn.click(batch_external_review_predict, ext_import, [ext_overall, ext_aspects, ext_table])
                export_ext.click(export_external_rows, ext_table, ext_file)

            with gr.Tab("Research Metrics"):
                gr.Markdown("Metrics are loaded from the updated 10W experiment reports. Tables use CSV outputs when available, with JSON fallback.")
                research_cards = gr.HTML(research_cards_html())
                with gr.Accordion("Performance comparison", open=True):
                    overall_table = gr.Dataframe(headers=["Model", "Macro-F1", "Accuracy"], value=overall_metric_rows(), interactive=False)
                    aspect_table = gr.Dataframe(headers=["Aspect", "No-meta F1", "Proposed F1", "F1 Delta", "No-meta Acc", "Proposed Acc", "Acc Delta"], value=aspect_metric_rows(), interactive=False)
                with gr.Accordion("Ablation and metadata source summary", open=False):
                    ablation_table = gr.Dataframe(headers=["Variant", "Mean Macro-F1", "Mean Accuracy"], value=ablation_rows(), interactive=False)
                    meta_source_table = gr.Dataframe(headers=["Aspect", "Top Metadata Source", "Source Share", "Mean Weight", "Mean Focus"], value=meta_source_rows(), interactive=False)
                with gr.Accordion("Figures from updated reports", open=False):
                    with gr.Row():
                        gr.Image(value=_report_image("aspect_distribution.png"), label="Aspect sentiment distribution", interactive=False)
                        gr.Image(value=_report_image("category_aspect_negative_heatmap.png"), label="Negative share by category x aspect", interactive=False)
                    with gr.Row():
                        gr.Image(value=_report_image("category_aspect_positive_heatmap.png"), label="Positive share by category x aspect", interactive=False)
                        gr.Image(value=_report_image("confusion_matrix_proposed_overall_head.png"), label="Proposed overall confusion matrix", interactive=False)
                with gr.Accordion("Report file groups", open=False):
                    gr.Dataframe(headers=["Group", "Files"], value=report_asset_rows(), interactive=False)
                refresh_research = gr.Button("Refresh Research Metrics", variant="primary")
                refresh_research.click(refresh_research_outputs, outputs=[research_cards, overall_table, aspect_table, ablation_table, meta_source_table])
        demo.load(consumer_product_view, [product_select, consumer_aspect], [product_detail, aspect_html, evidence_html, consumer_table])
        demo.load(negative_product_spotlight, outputs=negative_spotlight)
        demo.load(merchant_score_filter, [merchant_metric, merchant_prediction, merchant_category], merchant_scores)
        demo.load(filter_products, [filter_aspect, filter_sentiment, filter_category, filter_tags, min_rating], [filter_table, filter_summary])
    return demo


demo = build_app()

if __name__ == "__main__":
    demo.launch(ssr_mode=False)