import os
import time
import json
import tempfile
from typing import Dict, Any, List, Generator, Tuple, Optional

import requests
import gradio as gr
import base64
import re

PRINTIFY_BASE = "https://api.printify.com"
DEFAULT_BASE_PRICE = 0.001
GRID_FILENAME = "grid.png"

HARD_MAX_VARIANTS_PER_PRODUCT = 100
CHUNK_TARGET_VARIANTS = 85


def _now() -> str:
    return time.strftime("%H:%M:%S")


def _sleep(ms: int):
    time.sleep(ms / 1000)


def _auth_headers() -> Dict[str, str]:
    token = os.environ.get("PRINTIFY_API_TOKEN")
    if not token:
        raise RuntimeError("Missing PRINTIFY_API_TOKEN (HF Space Secret).")
    return {"Authorization": f"Bearer {token}"}


def _parse_retry_after_seconds(r: requests.Response) -> Optional[float]:
    ra = r.headers.get("Retry-After")
    if ra:
        try:
            return float(ra)
        except Exception:
            pass

    reset = r.headers.get("X-RateLimit-Reset") or r.headers.get("X-RateLimit-Reset-After")
    if reset:
        try:
            return float(reset)
        except Exception:
            pass

    try:
        txt = (r.text or "")[:2000]
    except Exception:
        txt = ""
    m = re.search(r"(\d+(\.\d+)?)\s*(s|sec|secs|second|seconds)\b", txt, re.I)
    if m:
        try:
            return float(m.group(1))
        except Exception:
            return None
    return None


def _req(
    method: str,
    path: str,
    json_body: Optional[Dict[str, Any]] = None,
    logs: Optional[List[str]] = None,
) -> Any:
    kwargs: Dict[str, Any] = {
        "headers": _auth_headers(),
        "timeout": 60,
    }
    if json_body is not None:
        kwargs["json"] = json_body

    while True:
        r = requests.request(
            method,
            f"{PRINTIFY_BASE}{path}",
            **kwargs,
        )

        if r.status_code == 429:
            wait_s = _parse_retry_after_seconds(r)
            if logs is not None:
                _log(
                    logs,
                    f"RATE_LIMIT 429 path={path} retry_after={wait_s} "
                    f"headers={dict(r.headers)} body={r.text[:400]}",
                )
            if wait_s is None:
                raise RuntimeError(f"HTTP 429 without retry instruction: {r.text[:2000]}")
            time.sleep(max(0.0, wait_s))
            continue

        if r.status_code >= 500:
            wait_s = _parse_retry_after_seconds(r)
            if logs is not None:
                _log(
                    logs,
                    f"SERVER_ERROR {r.status_code} path={path} retry_after={wait_s} "
                    f"body={r.text[:400]}",
                )
            if wait_s is None:
                raise RuntimeError(f"HTTP {r.status_code}: {r.text[:2000]}")
            time.sleep(max(0.0, wait_s))
            continue

        if r.status_code >= 400:
            raise RuntimeError(f"HTTP {r.status_code}: {r.text[:2000]}")

        if r.text:
            return r.json()
        return {}


def _log(logs: List[str], msg: str):
    logs.append(f"[{_now()}] {msg}")


def _find_first_valid_pair(logs: List[str]) -> Dict[str, Any]:
    _log(logs, "Listing blueprints")
    blueprints = _req("GET", "/v1/catalog/blueprints.json", logs=logs)

    for bp in blueprints:
        bp_id = str(bp["id"])
        _log(logs, f"Blueprint {bp_id}: fetching providers")

        providers = _req(
            "GET",
            f"/v1/catalog/blueprints/{bp_id}/print_providers.json",
            logs=logs,
        )
        for p in providers:
            p_id = str(p["id"])
            _log(logs, f"Blueprint {bp_id} / Provider {p_id}: fetching variants")

            vr = _req(
                "GET",
                f"/v1/catalog/blueprints/{bp_id}/print_providers/{p_id}/variants.json?show-out-of-stock=1",
                logs=logs,
            )
            variants = vr.get("variants")
            if isinstance(variants, list) and variants:
                _log(logs, f"FOUND {len(variants)} variants")

                return {
                    "blueprint": bp,
                    "provider": p,
                    "variants": variants,
                    "blueprintDetails": _req(
                        "GET",
                        f"/v1/catalog/blueprints/{bp_id}.json",
                        logs=logs,
                    ),
                    "providerDetails": _req(
                        "GET",
                        f"/v1/catalog/print_providers/{p_id}.json",
                        logs=logs,
                    ),
                    "shippingInfo": _req(
                        "GET",
                        f"/v1/catalog/blueprints/{bp_id}/print_providers/{p_id}/shipping.json",
                        logs=logs,
                    ),
                }

    raise RuntimeError("No blueprint/provider pair with variants found.")


def _get_all_provider_blobs_for_blueprint(
    logs: List[str],
    blueprint: Dict[str, Any],
) -> List[Dict[str, Any]]:
    bp_id = str(blueprint.get("id"))
    if not bp_id:
        raise RuntimeError("Blueprint object missing id.")

    _log(logs, f"BLUEPRINT_ALL_PROVIDERS blueprint_id={bp_id}: fetching providers")
    providers = _req(
        "GET",
        f"/v1/catalog/blueprints/{bp_id}/print_providers.json",
        logs=logs,
    )
    if not isinstance(providers, list) or not providers:
        raise RuntimeError(f"No providers found for blueprint {bp_id}.")

    bp_details = _req(
        "GET",
        f"/v1/catalog/blueprints/{bp_id}.json",
        logs=logs,
    )

    blobs: List[Dict[str, Any]] = []
    for p in providers:
        if not isinstance(p, dict):
            continue
        p_id = str(p.get("id"))
        if not p_id:
            continue

        _log(logs, f"Blueprint {bp_id} / Provider {p_id}: fetching variants (ALL)")
        vr = _req(
            "GET",
            f"/v1/catalog/blueprints/{bp_id}/print_providers/{p_id}/variants.json?show-out-of-stock=1",
            logs=logs,
        )
        variants = vr.get("variants")
        count = len(variants) if isinstance(variants, list) else 0
        _log(
            logs,
            f"PROVIDER_VARIANTS blueprint={bp_id} provider={p_id} count={count}",
        )
        if not isinstance(variants, list) or not variants:
            continue

        provider_details = _req(
            "GET",
            f"/v1/catalog/print_providers/{p_id}.json",
            logs=logs,
        )
        shipping_info = _req(
            "GET",
            f"/v1/catalog/blueprints/{bp_id}/print_providers/{p_id}/shipping.json",
            logs=logs,
        )

        blobs.append(
            {
                "blueprint": blueprint,
                "provider": p,
                "variants": variants,
                "blueprintDetails": bp_details,
                "providerDetails": provider_details,
                "shippingInfo": shipping_info,
            }
        )

    if not blobs:
        raise RuntimeError(f"No providers with variants for blueprint {bp_id}.")
    return blobs


def _build_product(blob: Dict[str, Any], currency: str, logs: List[str]) -> Dict[str, Any]:
    variants = blob["variants"]

    snapshot = []
    for v in variants:
        cents = v.get("price")
        cents = int(cents) if isinstance(cents, (int, str)) and str(cents).isdigit() else None

        ph = v.get("placeholders")
        if not isinstance(ph, list):
            ph = []

        placeholders = []
        for x in ph:
            if not isinstance(x, dict):
                continue
            placeholders.append({
                "position": x.get("position"),
                "width": x.get("width"),
                "height": x.get("height"),
            })

        snapshot.append({
            "id": v.get("id"),
            "sku": v.get("sku"),
            "size": (v.get("options") or {}).get("size"),
            "color": (v.get("options") or {}).get("color"),
            "priceCents": cents,
            "price": round(cents / 100, 2) if cents is not None else None,
            "placeholders": placeholders,
        })

    _log(logs, f"VARIANT_SNAPSHOT sample={json.dumps(snapshot[:20])}")

    print_area_sample = []
    for s in snapshot[:20]:
        print_area_sample.append({
            "id": s.get("id"),
            "size": s.get("size"),
            "color": s.get("color"),
            "placeholders": s.get("placeholders"),
        })
    _log(logs, f"PRINT_AREA_SNAPSHOT sample={json.dumps(print_area_sample)}")

    print_areas_by_variant: Dict[str, Any] = {}
    for s in snapshot:
        vid = s.get("id")
        if vid is None:
            continue
        per_pos: Dict[str, Any] = {}
        for ph in (s.get("placeholders") or []):
            pos = ph.get("position")
            if not pos:
                continue
            per_pos[str(pos)] = {"width": ph.get("width"), "height": ph.get("height")}
        print_areas_by_variant[str(vid)] = per_pos

    all_positions = sorted({
        ph.get("position")
        for s in snapshot
        for ph in (s.get("placeholders") or [])
        if ph.get("position")
    })

    all_cents = [v["priceCents"] for v in snapshot if v["priceCents"] is not None]
    min_price = round(min(all_cents) / 100, 2) if all_cents else DEFAULT_BASE_PRICE

    colors = sorted({v["color"] for v in snapshot if v["color"]})
    sizes = sorted({v["size"] for v in snapshot if v["size"]})

    provider = blob["providerDetails"]
    loc = provider.get("location") or {}
    loc_str = ", ".join(x for x in [loc.get("city"), loc.get("country")] if x) or "empty"

    description = (
        (blob["blueprintDetails"].get("description") or "empty")
        + f"\n\nFulfilled by {provider.get('title') or provider.get('name')} — {loc_str}"
    )

    return {
        "name": blob["blueprintDetails"].get("title"),
        "currency": currency,
        "price": min_price,
        "tags": ["Printify", f"Provider: {provider.get('title') or provider.get('name')}"],
        "options": {
            "Color": colors,
            "Size": sizes,
        },
        "description": description,
        "variants": snapshot,
        "printAreas": {
            "positions": all_positions,
            "byVariantId": print_areas_by_variant,
            "units": "px",
        },
        "raw": blob,
    }


def _pick_shop_id(shops_resp: Any) -> str:
    if isinstance(shops_resp, list):
        items = shops_resp
    elif isinstance(shops_resp, dict):
        items = shops_resp.get("data") or shops_resp.get("shops") or shops_resp.get("items") or []
    else:
        items = []

    if not isinstance(items, list) or not items:
        raise RuntimeError("No shops found on /v1/shops.json for this token.")

    forced = (os.environ.get("PRINTIFY_SHOP_ID") or "").strip()
    if forced:
        for s in items:
            if isinstance(s, dict) and str(s.get("id")) == forced:
                return str(s["id"])
        raise RuntimeError(f"Preferred shop '{forced}' not found; refusing to fallback.")

    preferred_name = os.environ.get("PRINTIFY_SHOP_NAME", "Atheria").strip().lower()

    for s in items:
        if not isinstance(s, dict):
            continue
        title = (s.get("title") or s.get("name") or "").strip().lower()
        if title and title == preferred_name:
            return str(s["id"])

    raise RuntimeError(f"Preferred shop name '{os.environ.get('PRINTIFY_SHOP_NAME','Atheria')}' not found; refusing to fallback.")


def _upload_grid_from_file(logs: List[str]) -> Dict[str, Any]:
    path = os.path.join(os.getcwd(), GRID_FILENAME)
    if not os.path.exists(path):
        raise RuntimeError(f"Grid image not found at {path}")

    with open(path, "rb") as f:
        raw = f.read()

    b64 = base64.b64encode(raw).decode("ascii")

    payload = {
        "file_name": GRID_FILENAME,
        "contents": b64,
    }

    _log(logs, f"UPLOADING_GRID path={path} bytes={len(raw)} b64len={len(b64)}")
    resp = _req("POST", "/v1/uploads/images.json", json_body=payload, logs=logs)

    if not isinstance(resp, dict) or not resp.get("id"):
        raise RuntimeError(f"Unexpected upload response: {str(resp)[:500]}")

    _log(
        logs,
        f"GRID_UPLOAD id={resp.get('id')} file={resp.get('file_name')} "
        f"w={resp.get('width')} h={resp.get('height')}",
    )
    return resp


def _scale_fill(ph_w: float, ph_h: float, img_w: float, img_h: float) -> float:
    if ph_w <= 0 or ph_h <= 0 or img_w <= 0 or img_h <= 0:
        return 1.0
    s = (ph_h * img_w) / (ph_w * img_h)
    if s < 1.0:
        s = 1.0
    return float(s)


def _log_catalog_variants(logs: List[str], product_info: Dict[str, Any], limit: int = 50):
    variants = product_info.get("variants") or []
    total = len(variants) if isinstance(variants, list) else 0
    _log(logs, f"CATALOG_VARIANTS_TOTAL {total}")
    if not isinstance(variants, list):
        return
    n = 0
    for v in variants:
        if not isinstance(v, dict):
            continue
        vid = v.get("id")
        size = v.get("size")
        color = v.get("color")
        ph = v.get("placeholders") or []
        phn = len(ph) if isinstance(ph, list) else 0
        _log(logs, f"CATALOG_VARIANT id={vid} size={size} color={color} placeholders={phn}")
        n += 1
        if n >= limit:
            break


def _create_product_all_variants_with_grid(
    logs: List[str],
    shop_id: str,
    blob: Dict[str, Any],
    product_info: Dict[str, Any],
    upload: Dict[str, Any],
) -> Dict[str, Any]:
    bp_id = (blob.get("blueprint") or {}).get("id")
    provider_id = (blob.get("provider") or {}).get("id")
    if bp_id is None or provider_id is None:
        raise RuntimeError("Missing blueprint or provider id.")

    enabled_variants = product_info.get("variants") or []
    if not isinstance(enabled_variants, list) or not enabled_variants:
        raise RuntimeError("No variants to create product with.")

    all_variants = product_info.get("_allVariants") or enabled_variants
    if not isinstance(all_variants, list) or not all_variants:
        raise RuntimeError("No all-variants universe found for this provider.")

    enabled_ids_raw = product_info.get("_enabledVariantIds") or []
    enabled_ids = set()
    for x in enabled_ids_raw:
        try:
            enabled_ids.add(int(x))
        except Exception:
            pass
    if not enabled_ids:
        for v in enabled_variants:
            vid = v.get("id")
            if vid is None:
                continue
            try:
                enabled_ids.add(int(vid))
            except Exception:
                continue

    img_id = upload.get("id")
    img_w = float(upload.get("width") or 0)
    img_h = float(upload.get("height") or 0)

    variants_payload = []
    print_areas_payload = []

    enabled_count = 0
    for v in all_variants:
        if not isinstance(v, dict):
            continue
        vid = v.get("id")
        if vid is None:
            continue
        try:
            vid_i = int(vid)
        except Exception:
            continue
        is_on = vid_i in enabled_ids
        if is_on:
            enabled_count += 1
        variants_payload.append({
            "id": vid_i,
            "price": 1,
            "is_enabled": bool(is_on),
        })

    for v in enabled_variants:
        if not isinstance(v, dict):
            continue
        vid = v.get("id")
        if vid is None:
            continue
        try:
            vid_i = int(vid)
        except Exception:
            continue
        if vid_i not in enabled_ids:
            continue

        placeholders = v.get("placeholders") or []
        if not isinstance(placeholders, list) or not placeholders:
            continue

        ph_payload = []
        for ph in placeholders:
            if not isinstance(ph, dict):
                continue
            pos = ph.get("position")
            pw = ph.get("width")
            phh = ph.get("height")
            if not pos or pw is None or phh is None:
                continue
            try:
                pwf = float(pw)
                phf = float(phh)
            except Exception:
                continue
            scale = _scale_fill(pwf, phf, img_w, img_h)
            ph_payload.append({
                "position": pos,
                "images": [{
                    "id": img_id,
                    "x": 0.5,
                    "y": 0.5,
                    "scale": scale,
                    "angle": 0,
                }],
            })

        if ph_payload:
            print_areas_payload.append({
                "variant_ids": [vid_i],
                "placeholders": ph_payload,
            })

    if not variants_payload:
        raise RuntimeError("No valid variant ids to create product with.")
    if not print_areas_payload:
        raise RuntimeError("No placeholders payload generated for any enabled variant.")

    provider_details = blob.get("providerDetails") or {}
    provider_name = provider_details.get("title") or provider_details.get("name") or str(provider_id)

    base_title = (product_info.get("name") or "Printify Grid Test") + f" — {provider_name}"
    suffix = f" [bp={bp_id} pp={provider_id}]"
    if product_info.get("_dup") is True:
        title = base_title + " — Duplicate" + f" [bp={bp_id} pp={provider_id} dup]"
    else:
        title = base_title + suffix

    description = product_info.get("description") or ""

    payload = {
        "title": title,
        "description": description,
        "blueprint_id": int(bp_id),
        "print_provider_id": int(provider_id),
        "variants": variants_payload,
        "print_areas": print_areas_payload,
    }

    _log(
        logs,
        f"PHASE_B_CREATE shop_id={shop_id} blueprint_id={bp_id} provider_id={provider_id} "
        f"variants_payload_total={len(variants_payload)} enabled={enabled_count} print_areas_payload={len(print_areas_payload)}",
    )

    created = _req(
        "POST",
        f"/v1/shops/{shop_id}/products.json",
        json_body=payload,
        logs=logs,
    )
    if not isinstance(created, Dict):
        raise RuntimeError(f"Unexpected create response: {str(created)[:500]}")

    _log(logs, f"PHASE_B_CREATED product_id={created.get('id')}")
    return created


def _get_product(logs: List[str], shop_id: str, product_id: str) -> Dict[str, Any]:
    prod = _req("GET", f"/v1/shops/{shop_id}/products/{product_id}.json", logs=logs)
    if not isinstance(prod, dict):
        raise RuntimeError(f"Unexpected product response: {str(prod)[:500]}")
    variants = prod.get("variants") or []
    _log(logs, f"SHOP_VARIANTS_TOTAL {len(variants) if isinstance(variants, list) else 0}")
    if isinstance(variants, list):
        for v in variants:
            if not isinstance(v, dict):
                continue
            _log(
                logs,
                f"SHOP_VARIANT id={v.get('id')} enabled={v.get('is_enabled')} "
                f"cost={v.get('cost')} price={v.get('price')}",
            )
    return prod


def _margin_pct() -> float:
    raw = (os.environ.get("PRINTIFY_MARGIN_PCT") or "").strip()
    if not raw:
        return 0.0
    try:
        return float(raw)
    except Exception:
        return 0.0


def _update_prices_to_cost_plus_margin(
    logs: List[str],
    shop_id: str,
    product_id: str,
    product: Dict[str, Any],
) -> Dict[str, Any]:
    variants = product.get("variants") or []
    if not isinstance(variants, list) or not variants:
        raise RuntimeError("No variants found on created product for price update.")

    m = _margin_pct()
    payload_variants = []
    for v in variants:
        if not isinstance(v, dict):
            continue
        if v.get("is_enabled") is not True:
            continue
        vid = v.get("id")
        cost = v.get("cost")
        if vid is None or cost is None:
            continue
        try:
            cost_cents = int(cost)
        except Exception:
            continue
        price_cents = int(round(cost_cents * (1.0 + m)))
        if price_cents < 1:
            price_cents = 1
        payload_variants.append({
            "id": int(vid),
            "price": price_cents,
            "is_enabled": True,
        })
        _log(logs, f"PRICE_SET id={vid} cost={cost_cents} price={price_cents} margin_pct={m}")

    if not payload_variants:
        raise RuntimeError("No variant prices could be computed from costs.")

    upd = _req(
        "PUT",
        f"/v1/shops/{shop_id}/products/{product_id}.json",
        json_body={"variants": payload_variants},
        logs=logs,
    )
    if not isinstance(upd, dict):
        raise RuntimeError(f"Unexpected update response: {str(upd)[:500]}")

    _log(logs, f"PRICE_UPDATE_DONE variants={len(payload_variants)}")
    return upd


def _rebuild_options_for_variants(variants: List[Dict[str, Any]]) -> Dict[str, List[str]]:
    colors = sorted({v.get("color") for v in variants if v.get("color")})
    sizes = sorted({v.get("size") for v in variants if v.get("size")})
    return {
        "Color": colors,
        "Size": sizes,
    }


def run(currency: str) -> Generator[Tuple[str, str], None, None]:
    logs: List[str] = []
    result: Dict[str, Any] = {}

    def flush():
        return "\n".join(logs), json.dumps(result, indent=2)

    try:
        _log(logs, "START")
        yield flush()

        shops = _req("GET", "/v1/shops.json", logs=logs)
        _log(logs, f"SHOP_LIST {json.dumps(shops)}")
        yield flush()

        fd, path = tempfile.mkstemp(prefix="shops_", suffix=".json")
        os.close(fd)
        with open(path, "w", encoding="utf-8") as f:
            json.dump(shops, f, indent=2)
        _log(logs, f"SHOPS_JSON_WRITTEN {path}")
        yield flush()

        blob = _find_first_valid_pair(logs)
        result = _build_product(blob, currency or "USD", logs)
        _log(logs, "DONE")
        yield flush()

    except Exception as e:
        _log(logs, f"ERROR: {e}")
        result = {"error": str(e)}
        yield flush()


def phase_b(currency: str) -> Generator[Tuple[str, str], None, None]:
    logs: List[str] = []
    result: Dict[str, Any] = {}

    def flush():
        return "\n".join(logs), json.dumps(result, indent=2)

    try:
        _log(logs, "PHASE_B_START")
        yield flush()

        shops = _req("GET", "/v1/shops.json", logs=logs)
        _log(logs, f"SHOP_LIST {json.dumps(shops)}")
        yield flush()

        shop_id = _pick_shop_id(shops)
        _log(logs, f"SHOP_ID {shop_id}")
        yield flush()

        first_blob = _find_first_valid_pair(logs)
        bp_obj = first_blob.get("blueprint") or {}
        bp_id = bp_obj.get("id")
        if bp_id is None:
            raise RuntimeError("First valid blob missing blueprint id.")
        _log(logs, f"PHASE_B_BLUEPRINT {bp_id}")
        result["phaseBBlueprintId"] = bp_id
        yield flush()

        provider_blobs = _get_all_provider_blobs_for_blueprint(logs, bp_obj)
        result["providerCount"] = len(provider_blobs)
        _log(logs, f"PHASE_B_PROVIDER_COUNT {len(provider_blobs)}")
        yield flush()

        upload = _upload_grid_from_file(logs)
        result["gridUpload"] = upload
        yield flush()

        provider_runs: List[Dict[str, Any]] = []
        currency_code = currency or "USD"

        for idx, blob in enumerate(provider_blobs):
            provider_details = blob.get("providerDetails") or {}
            provider_meta = blob.get("provider") or {}
            provider_id = provider_meta.get("id")
            provider_name = (
                provider_details.get("title")
                or provider_details.get("name")
                or str(provider_id)
            )

            _log(
                logs,
                f"PROVIDER_RUN index={idx} provider_id={provider_id} "
                f"name={provider_name}",
            )
            yield flush()

            product_info_full = _build_product(blob, currency_code, logs)
            _log_catalog_variants(logs, product_info_full, limit=75)
            yield flush()

            variants_all = product_info_full.get("variants") or []
            if not isinstance(variants_all, list) or not variants_all:
                _log(logs, f"PROVIDER_SKIP provider_id={provider_id} reason=no_variants_after_build")
                yield flush()
                continue

            total_variants = len(variants_all)

            if total_variants <= HARD_MAX_VARIANTS_PER_PRODUCT:
                chunk_index = 0
                total_chunks = 1
                p_info_chunk = dict(product_info_full)
                p_info_chunk["variants"] = variants_all
                p_info_chunk["options"] = _rebuild_options_for_variants(variants_all)
                p_info_chunk["_allVariants"] = variants_all
                p_info_chunk["_enabledVariantIds"] = [int(v.get("id")) for v in variants_all if v.get("id") is not None]

                _log(
                    logs,
                    f"PROVIDER_SINGLE product provider_id={provider_id} name={provider_name} "
                    f"variants={total_variants}",
                )
                yield flush()

                created = _create_product_all_variants_with_grid(
                    logs,
                    shop_id=shop_id,
                    blob=blob,
                    product_info=p_info_chunk,
                    upload=upload,
                )
                created_id = str(created.get("id") or "")
                if not created_id:
                    raise RuntimeError("Created product response missing id.")
                yield flush()

                prod1 = _get_product(logs, shop_id, created_id)
                yield flush()

                _log(
                    logs,
                    f"COMPARE_COUNTS provider={provider_id} chunk_index={chunk_index} "
                    f"catalog_chunk={len(variants_all)} "
                    f"shop={len(prod1.get('variants') or [])}",
                )
                yield flush()

                upd = _update_prices_to_cost_plus_margin(logs, shop_id, created_id, prod1)
                yield flush()

                prod2 = _get_product(logs, shop_id, created_id)
                yield flush()

                provider_runs.append(
                    {
                        "providerId": provider_id,
                        "providerName": provider_name,
                        "chunkIndex": chunk_index,
                        "totalChunks": total_chunks,
                        "catalogVariantCountTotal": total_variants,
                        "catalogVariantCountChunk": len(variants_all),
                        "shopVariantCountAfterCreate": len(prod1.get("variants") or []),
                        "shopVariantCountFinal": len(prod2.get("variants") or []),
                        "productId": created_id,
                        "priceUpdateResponse": upd,
                    }
                )

            else:
                total_chunks = (total_variants + CHUNK_TARGET_VARIANTS - 1) // CHUNK_TARGET_VARIANTS
                chunk_index = 0
                offset = 0
                while offset < total_variants:
                    chunk = variants_all[offset: offset + CHUNK_TARGET_VARIANTS]
                    p_info_chunk = dict(product_info_full)
                    p_info_chunk["variants"] = chunk
                    p_info_chunk["options"] = _rebuild_options_for_variants(chunk)
                    p_info_chunk["_allVariants"] = variants_all
                    p_info_chunk["_enabledVariantIds"] = [int(v.get("id")) for v in chunk if v.get("id") is not None]
                    p_info_chunk["_dup"] = bool(chunk_index > 0)

                    _log(
                        logs,
                        f"PROVIDER_CHUNK provider_id={provider_id} name={provider_name} "
                        f"chunk_index={chunk_index} total_chunks={total_chunks} "
                        f"offset={offset} size={len(chunk)} total_variants={total_variants}",
                    )
                    yield flush()

                    created = _create_product_all_variants_with_grid(
                        logs,
                        shop_id=shop_id,
                        blob=blob,
                        product_info=p_info_chunk,
                        upload=upload,
                    )
                    created_id = str(created.get("id") or "")
                    if not created_id:
                        raise RuntimeError("Created product response missing id.")
                    yield flush()

                    prod1 = _get_product(logs, shop_id, created_id)
                    yield flush()

                    _log(
                        logs,
                        f"COMPARE_COUNTS provider={provider_id} chunk_index={chunk_index} "
                        f"catalog_chunk={len(chunk)} "
                        f"shop={len(prod1.get('variants') or [])}",
                    )
                    yield flush()

                    upd = _update_prices_to_cost_plus_margin(logs, shop_id, created_id, prod1)
                    yield flush()

                    prod2 = _get_product(logs, shop_id, created_id)
                    yield flush()

                    provider_runs.append(
                        {
                            "providerId": provider_id,
                            "providerName": provider_name,
                            "chunkIndex": chunk_index,
                            "totalChunks": total_chunks,
                            "catalogVariantCountTotal": total_variants,
                            "catalogVariantCountChunk": len(chunk),
                            "shopVariantCountAfterCreate": len(prod1.get("variants") or []),
                            "shopVariantCountFinal": len(prod2.get("variants") or []),
                            "productId": created_id,
                            "priceUpdateResponse": upd,
                        }
                    )

                    offset += CHUNK_TARGET_VARIANTS
                    chunk_index += 1

        result["providerRuns"] = provider_runs
        _log(logs, "PHASE_B_DONE")
        yield flush()

    except Exception as e:
        _log(logs, f"ERROR: {e}")
        result = {"error": str(e)}
        yield flush()


with gr.Blocks(title="Printify Catalog Probe") as demo:
    gr.Markdown("Extract and normalize ONE Printify blueprint into provider-specific JSON objects and products.")

    currency = gr.Textbox(label="Currency", value="USD")
    btn = gr.Button("Run")
    btn_b = gr.Button("Phase B (Test)")
    logs = gr.Textbox(label="Logs", lines=18)
    out = gr.Textbox(label="Output JSON", lines=18)

    btn.click(run, inputs=[currency], outputs=[logs, out])
    btn_b.click(phase_b, inputs=[currency], outputs=[logs, out])

demo.queue().launch()