"""Gradio layout for the mock Objectverse archive UI."""

from __future__ import annotations

from html import escape
from pathlib import Path
from typing import Any

import gradio as gr

from src.config import APP_TITLE, DEFAULT_MODE, PERSONALITY_MODES
from src.example_cache import load_sample_generation
from src.examples import EXAMPLE_OBJECTS, example_button_label
from src.models.llama_cpp_runner import reply_as_object
from src.models.schema import GenerationResult
from src.models.vision_runner import probe_vision_runtime
from src.pipeline import format_diary_markdown, generate_object_diary
from src.renderer.share_card import render_share_card
from src.ui import copy
from src.utils.zero_gpu import zero_gpu

CHAT_EMPTY_MESSAGE = "Wake an object first."

ARCHIVE_STATUS_EMPTY = """
<div class="archive-status asleep">
  <div>
    <span class="archive-label">Archive Status <span class="lang-zh">档案状态</span></span>
    <strong>Object asleep</strong>
    <p>Drop in a photo or use a sample object to open a case file.</p>
    <p class="lang-zh block">上传照片或使用示例物品来开启档案。</p>
  </div>
  <div class="status-pills">
    <span>Case pending</span>
    <span>Tiny models ready</span>
  </div>
</div>
"""

OBJECT_FILE_EMPTY = """
<div class="archive-empty">
  <span class="archive-label">Object File <span class="lang-zh">物品档案</span></span>
  <h3>No case opened yet.</h3>
  <p>The shelf is quiet. Wake an everyday object to see its file.</p>
  <p class="lang-zh block">档案架仍然安静。唤醒一个日常物品后查看档案。</p>
</div>
"""

DIARY_EMPTY = """
### Secret Diary

Wake an object to open its private field notes.

<div class="lang-zh block zh-helper">
唤醒物品后阅读它的秘密观察记录。
</div>
"""

SHARE_CARD_EMPTY = """
<div class="objectverse-placeholder">
  <span>Share Card <span class="lang-zh">分享卡片</span></span>
  <strong>Evidence slot empty.</strong>
  <p>A screenshot-friendly archive card appears after the object wakes.</p>
  <p class="lang-zh block">物品醒来后，这里会出现可截图分享的档案卡片。</p>
</div>
"""

TRACE_EMPTY = """
<div class="archive-empty compact">
  <span class="archive-label">Trace <span class="lang-zh">模型轨迹</span></span>
  <p>No trace saved yet.</p>
  <p class="lang-zh block">尚未保存 trace。</p>
</div>
"""

UI_CONTROL_SCRIPT = r"""
(() => {
  const root = document.documentElement;
  const INTERNAL_TEXT_REPLACEMENTS = new Map([
    ["将图像文件拖放到此处以上传", "Drop image file here to upload"],
    ["将图像拖放到此处", "Drop image here"],
    ["- 或 -", "- or -"],
    ["点击上传", "Click to upload"],
    ["清空对话", "Clear chat"],
    ["通过 API 使用", "Use via API"],
    ["使用 Gradio 构建", "Built with Gradio"],
    ["设置", "Settings"],
    ["标志", "icon"],
  ]);
  const CJK_RE = /[\u3400-\u9fff]/;
  const CJK_WRAP_RE = /[\u3400-\u9fff，。！？、；：：“”‘’（）《》【】]+/g;
  const SKIP_TEXT_SELECTOR = "script, style, textarea, input, select, option, svg, .lang-zh, .auto-zh";

  function readStoredTheme() {
    try {
      return localStorage.getItem("objectverse-theme") === "light" ? "light" : "dark";
    } catch {
      return "dark";
    }
  }

  root.dataset.ovTheme = readStoredTheme();

  function syncLanguageButtons(value) {
    document.querySelectorAll("[data-lang-toggle]").forEach((button) => {
      const active = button.dataset.langToggle === value;
      button.classList.toggle("active", active);
      button.setAttribute("aria-pressed", String(active));
    });
  }

  function syncThemeButtons(value) {
    const isLight = value === "light";
    document.querySelectorAll("[data-theme-toggle]").forEach((button) => {
      button.dataset.themeToggle = value;
      button.classList.toggle("active", isLight);
      button.setAttribute("aria-pressed", String(isLight));
      button.setAttribute("aria-label", isLight ? "Switch to dark theme" : "Switch to light theme");
      button.setAttribute("title", isLight ? "Switch to dark theme" : "Switch to light theme");
      button.querySelectorAll("[data-theme-icon]").forEach((icon) => {
        const hidden = icon.dataset.themeIcon !== value;
        icon.hidden = hidden;
        icon.toggleAttribute("hidden", hidden);
      });
    });
  }

  function syncControls() {
    syncLanguageButtons(root.dataset.ovLang === "zh" ? "zh" : "en");
    syncThemeButtons(root.dataset.ovTheme === "light" ? "light" : "dark");
  }

  function scheduleControlSync() {
    syncControls();
    window.setTimeout(syncControls, 50);
    window.setTimeout(syncControls, 250);
    window.setTimeout(syncControls, 1000);
  }

  function applyLanguage(value) {
    const language = value === "zh" ? "zh" : "en";
    root.dataset.ovLang = language;
    if (document.body) {
      document.body.dataset.ovLang = language;
    }
    syncLanguageButtons(language);
  }

  function applyTheme(value) {
    const theme = value === "light" ? "light" : "dark";
    root.dataset.ovTheme = theme;
    if (document.body) {
      document.body.dataset.ovTheme = theme;
    }
    try {
      localStorage.setItem("objectverse-theme", theme);
    } catch {
      // Local storage can be unavailable in embedded previews.
    }
    syncThemeButtons(theme);
  }

  function initControls() {
    root.lang = "en";
    applyLanguage("en");
    applyTheme(readStoredTheme());
    normalizeGradioChrome(document.body);
    wrapChineseText(document.body);
    scheduleControlSync();
  }

  function normalizeString(value) {
    let nextValue = value;
    INTERNAL_TEXT_REPLACEMENTS.forEach((replacement, source) => {
      nextValue = nextValue.split(source).join(replacement);
    });
    return nextValue;
  }

  function normalizeGradioChrome(rootNode) {
    if (!rootNode) return;

    rootNode.querySelectorAll("[aria-label], [title], [alt]").forEach((element) => {
      ["aria-label", "title", "alt"].forEach((attribute) => {
        const value = element.getAttribute(attribute);
        if (value && CJK_RE.test(value)) {
          const normalizedValue = normalizeString(value);
          if (normalizedValue !== value) {
            element.setAttribute(attribute, normalizedValue);
          }
        }
      });
    });

    const walker = document.createTreeWalker(rootNode, NodeFilter.SHOW_TEXT);
    const nodes = [];
    let node = walker.nextNode();
    while (node) {
      const parent = node.parentElement;
      const text = node.nodeValue || "";
      if (parent && !parent.closest(SKIP_TEXT_SELECTOR) && CJK_RE.test(text)) {
        nodes.push(node);
      }
      node = walker.nextNode();
    }

    nodes.forEach((textNode) => {
      const text = textNode.nodeValue || "";
      const normalizedText = normalizeString(text);
      if (normalizedText !== text) {
        textNode.nodeValue = normalizedText;
      }
    });
  }

  function wrapChineseText(rootNode) {
    if (!rootNode) return;

    const walker = document.createTreeWalker(rootNode, NodeFilter.SHOW_TEXT);
    const nodes = [];
    let node = walker.nextNode();
    while (node) {
      const parent = node.parentElement;
      const text = node.nodeValue || "";
      if (parent && !parent.closest(SKIP_TEXT_SELECTOR) && CJK_RE.test(text)) {
        nodes.push(node);
      }
      node = walker.nextNode();
    }

    nodes.forEach((textNode) => {
      const text = textNode.nodeValue || "";
      const fragment = document.createDocumentFragment();
      let lastIndex = 0;
      text.replace(CJK_WRAP_RE, (match, index) => {
        if (index > lastIndex) {
          fragment.append(document.createTextNode(text.slice(lastIndex, index)));
        }
        const span = document.createElement("span");
        span.className = "auto-zh";
        span.textContent = match;
        fragment.append(span);
        lastIndex = index + match.length;
        return match;
      });
      if (lastIndex < text.length) {
        fragment.append(document.createTextNode(text.slice(lastIndex)));
      }
      textNode.replaceWith(fragment);
    });
  }

  document.addEventListener("click", (event) => {
    const langButton = event.target.closest("[data-lang-toggle]");
    if (langButton) {
      applyLanguage(langButton.dataset.langToggle);
      return;
    }

    const themeButton = event.target.closest("[data-theme-toggle]");
    if (themeButton) {
      const currentTheme = root.dataset.ovTheme === "light" ? "light" : "dark";
      applyTheme(currentTheme === "light" ? "dark" : "light");
    }
  });

  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", initControls);
  } else {
    initControls();
  }

  const observer = new MutationObserver(() => {
    normalizeGradioChrome(document.body);
    wrapChineseText(document.body);
    syncControls();
  });
  if (document.body) {
    observer.observe(document.body, { childList: true, subtree: true });
  } else {
    document.addEventListener("DOMContentLoaded", () => {
      observer.observe(document.body, { childList: true, subtree: true });
    });
  }
})();
"""

GenerationUiResult = tuple[
    str,
    dict[str, Any],
    dict[str, Any],
    str,
    str,
    str,
    dict[str, Any],
    str,
    dict[str, Any] | None,
    list[dict[str, str]],
    str,
]


def build_app() -> gr.Blocks:
    css = Path("src/ui/styles.css").read_text(encoding="utf-8")

    custom_theme = gr.themes.Monochrome(
        primary_hue="amber",
        secondary_hue="yellow",
        neutral_hue="stone",
    ).set(
        body_background_fill="#161513",
        body_background_fill_dark="#161513",
        background_fill_primary="#161513",
        background_fill_primary_dark="#161513",
        background_fill_secondary="rgba(30, 28, 25, 0.6)",
        background_fill_secondary_dark="rgba(30, 28, 25, 0.6)",
        border_color_primary="rgba(212, 175, 55, 0.15)",
        border_color_primary_dark="rgba(212, 175, 55, 0.15)",
        body_text_color="#E6E1D3",
        body_text_color_dark="#E6E1D3",
        body_text_color_subdued="#A89B84",
        body_text_color_subdued_dark="#A89B84",
        link_text_color="#D4AF37",
        link_text_color_dark="#D4AF37",
        link_text_color_hover="#F5D061",
        link_text_color_hover_dark="#F5D061",
        link_text_color_active="#F5D061",
        link_text_color_active_dark="#F5D061",
        link_text_color_visited="#D4AF37",
        link_text_color_visited_dark="#D4AF37",
        block_background_fill="rgba(30, 28, 25, 0.72)",
        block_background_fill_dark="rgba(30, 28, 25, 0.72)",
        block_border_width="1px",
        block_info_text_color="#A89B84",
        block_info_text_color_dark="#A89B84",
        block_label_text_color="#A89B84",
        block_label_text_color_dark="#A89B84",
        block_title_text_color="#E6E1D3",
        block_title_text_color_dark="#E6E1D3",
        panel_background_fill="rgba(30, 28, 25, 0.88)",
        panel_background_fill_dark="rgba(30, 28, 25, 0.88)",
        accordion_text_color="#E6E1D3",
        accordion_text_color_dark="#E6E1D3",
        table_text_color="#E6E1D3",
        table_text_color_dark="#E6E1D3",
        input_background_fill="#1b1a18",
        input_background_fill_dark="#1b1a18",
        input_background_fill_focus="#1b1a18",
        input_background_fill_focus_dark="#1b1a18",
        input_background_fill_hover="#1b1a18",
        input_background_fill_hover_dark="#1b1a18",
        input_border_color="rgba(212, 175, 55, 0.3)",
        input_border_color_dark="rgba(212, 175, 55, 0.3)",
        input_border_color_focus="#D4AF37",
        input_border_color_focus_dark="#D4AF37",
        input_placeholder_color="#8B8678",
        input_placeholder_color_dark="#8B8678",
        checkbox_label_text_color="#E6E1D3",
        checkbox_label_text_color_dark="#E6E1D3",
        checkbox_label_text_color_selected="#F5D061",
        checkbox_label_text_color_selected_dark="#F5D061",
        checkbox_label_background_fill="transparent",
        checkbox_label_background_fill_dark="transparent",
        checkbox_label_background_fill_selected="rgba(212, 175, 55, 0.05)",
        checkbox_label_background_fill_selected_dark="rgba(212, 175, 55, 0.05)",
        checkbox_label_border_color="rgba(212, 175, 55, 0.3)",
        checkbox_label_border_color_dark="rgba(212, 175, 55, 0.3)",
        checkbox_label_border_color_selected="#D4AF37",
        checkbox_label_border_color_selected_dark="#D4AF37",
        button_secondary_background_fill="rgba(22, 21, 19, 0.8)",
        button_secondary_background_fill_dark="rgba(22, 21, 19, 0.8)",
        button_secondary_background_fill_hover="rgba(38, 35, 29, 0.9)",
        button_secondary_background_fill_hover_dark="rgba(38, 35, 29, 0.9)",
        button_secondary_border_color="rgba(212, 175, 55, 0.15)",
        button_secondary_border_color_dark="rgba(212, 175, 55, 0.15)",
        button_secondary_border_color_hover="#D4AF37",
        button_secondary_border_color_hover_dark="#D4AF37",
        button_secondary_text_color="#E6E1D3",
        button_secondary_text_color_dark="#E6E1D3",
        button_secondary_text_color_hover="#F5D061",
        button_secondary_text_color_hover_dark="#F5D061",
        button_primary_text_color="#2a261f",
        button_primary_text_color_dark="#2a261f",
    )

    with gr.Blocks(theme=custom_theme, head=f"<style>{css}</style><script>{UI_CONTROL_SCRIPT}</script>", title=APP_TITLE, fill_width=True, elem_id="objectverse-app") as demo:
        with gr.Column(elem_id="app-container"):
            gr.HTML(
                f"""
                <header id="objectverse-hero">
                  <div class="hero-copy">
                    <span class="archive-label">Gradio Small Model Lab</span>
                    <h1>{APP_TITLE}</h1>
                    <p class="hero-kicker">Every object has a secret life.</p>
                    <p class="hero-feature">Upload a photo, wake a tiny object persona, read its diary, chat, and export the evidence.</p>
                    <p class="hero-kicker lang-zh block">万物日记：每个物品都有秘密人生。</p>
                    <p class="hero-feature lang-zh block">上传照片，唤醒小模型生成的物品人格，阅读日记、对话并保存证据。</p>
                    <div class="hero-badges" aria-label="Project badges">
                      <span>Gradio Blocks</span>
                      <span>Mock-safe MVP</span>
                      <span>&lt; 32B params</span>
                    </div>
                  </div>
                  <div class="top-controls" aria-label="Display controls">
                    <div class="top-actions" aria-label="Project links and theme">
                      <a class="icon-link" href="https://x.com/GeekCrafter/status/2064250293001576556?s=20" target="_blank" rel="noopener noreferrer" aria-label="Open X social post" title="X post">
                        <span class="x-mark" aria-hidden="true">X</span>
                      </a>
                      <a class="icon-link" href="https://youtu.be/5HbhP21hooA" target="_blank" rel="noopener noreferrer" aria-label="Open YouTube demo video" title="YouTube demo">
                        <svg aria-hidden="true" viewBox="0 0 24 24" focusable="false">
                          <rect x="3" y="6" width="18" height="12" rx="3"></rect>
                          <path d="M10 9.5v5l5-2.5-5-2.5Z"></path>
                        </svg>
                      </a>
                      <button type="button" class="icon-link theme-toggle" data-theme-toggle="dark" aria-pressed="false" aria-label="Switch to light theme" title="Switch to light theme">
                        <svg data-theme-icon="dark" aria-hidden="true" viewBox="0 0 24 24" focusable="false">
                          <path d="M20 15.5A8.5 8.5 0 0 1 8.5 4a7.2 7.2 0 1 0 11.5 11.5Z"></path>
                        </svg>
                        <svg data-theme-icon="light" aria-hidden="true" viewBox="0 0 24 24" focusable="false" hidden>
                          <circle cx="12" cy="12" r="4"></circle>
                          <path d="M12 2v2M12 20v2M4 12H2M22 12h-2M5 5l1.5 1.5M17.5 17.5 19 19M19 5l-1.5 1.5M6.5 17.5 5 19"></path>
                        </svg>
                      </button>
                    </div>
                    <div class="language-control">
                      <span>Language</span>
                      <div class="segmented-control">
                        <button type="button" class="active" data-lang-toggle="en" aria-pressed="true">EN</button>
                        <button type="button" data-lang-toggle="zh" aria-pressed="false">ZH</button>
                      </div>
                    </div>
                  </div>
                </header>
                """,
                padding=False,
            )

            result_state = gr.State()
            zero_gpu_probe_button = gr.Button(visible=False)
            zero_gpu_probe_output = gr.JSON(visible=False)
            vision_runtime_probe_button = gr.Button(visible=False)
            vision_runtime_probe_output = gr.JSON(visible=False)
            archive_status = gr.HTML(value=ARCHIVE_STATUS_EMPTY, elem_id="archive-status", padding=False)

            with gr.Row(elem_id="intake", elem_classes=["content-section", "top-grid"]):
                with gr.Column(scale=7, elem_classes=["archive-panel", "intake-panel"]):
                    gr.HTML(_panel_header("01", "Wake an Object", "Upload a photo or describe an everyday object.", "唤醒物品"), padding=False)
                    image_input = gr.Image(
                        label=copy.UPLOAD_LABEL,
                        show_label=False,
                        type="filepath",
                        sources=["upload"],
                        placeholder="Drop an object photo here or click to upload.",
                        elem_id="object-upload",
                    )
                    description_input = gr.Textbox(
                        label=copy.DESCRIPTION_LABEL,
                        placeholder=copy.DESCRIPTION_PLACEHOLDER,
                        lines=2,
                        max_lines=5,
                        elem_id="object-description",
                    )

                    gr.HTML("""<div class="mode-header">Personality mode <span class="lang-zh">人格模式</span></div>""", padding=False)
                    mode_input = gr.Radio(
                        label=copy.MODE_LABEL,
                        show_label=False,
                        choices=PERSONALITY_MODES,
                        value=DEFAULT_MODE,
                        elem_id="personality-mode",
                        elem_classes=["mode-switch"],
                    )
                    generate_button = gr.Button(copy.GENERATE_LABEL, variant="primary", elem_id="wake-button")

                with gr.Column(scale=4, elem_classes=["archive-panel", "examples-panel"]):
                    gr.HTML(
                        """
                        <div class="example-header">
                          <div>
                            <strong>Example Objects</strong>
                            <span class="lang-zh block">示例物品</span>
                          </div>
                          <span class="example-badge">6 filed samples</span>
                        </div>
                        """,
                        padding=False,
                    )
                    example_buttons: list[gr.Button] = []
                    for index in range(len(EXAMPLE_OBJECTS)):
                        example_buttons.append(
                            gr.Button(
                                example_button_label(index),
                                elem_classes=["example-card"],
                                variant="secondary",
                            )
                        )

            with gr.Row(elem_id="results", elem_classes=["content-section", "results-grid"]):
                with gr.Column(scale=5, elem_classes=["archive-panel", "file-panel"]):
                    gr.HTML(_panel_header("02", "Object File", "Structured understanding, persona, and evidence tags.", "物品档案"), padding=False)
                    object_file_summary = gr.HTML(value=OBJECT_FILE_EMPTY, elem_id="object-file-summary", padding=False)

                with gr.Column(scale=6, elem_classes=["archive-panel", "diary-panel"]):
                    gr.HTML(_panel_header("03", "Secret Diary", "A private note written by the object.", "秘密日记"), padding=False)
                    diary_output = gr.Markdown(
                        value=DIARY_EMPTY,
                        label=copy.DIARY_LABEL,
                        elem_id="diary-output",
                    )

            with gr.Row(elem_id="share-chat", elem_classes=["content-section", "split-section"]):
                with gr.Column(scale=5, elem_classes=["archive-panel", "share-panel"], elem_id="share-panel"):
                    gr.HTML(_panel_header("04", "Share Card", "Screenshot-friendly field evidence.", "分享卡片"), padding=False)
                    share_card = gr.HTML(value=SHARE_CARD_EMPTY, label=copy.SHARE_CARD_LABEL, padding=False)

                with gr.Column(scale=4, elem_classes=["archive-panel", "chat-panel"], elem_id="chat-panel"):
                    gr.HTML(_panel_header("05", "Object Chat", "Ask after the object wakes up.", "物品对话"), padding=False)
                    chatbot = gr.Chatbot(
                        value=_empty_chat_history(),
                        label=copy.CHAT_LABEL,
                        type="messages",
                        height=300,
                        allow_tags=False,
                    )
                    chat_input = gr.Textbox(placeholder=copy.CHAT_INPUT_PLACEHOLDER, show_label=False)
                    chat_button = gr.Button(copy.CHAT_BUTTON_LABEL, elem_classes=["quiet-button"])

            with gr.Accordion("Developer details", open=False, elem_classes=["developer-details"]):
                trace_summary = gr.HTML(value=TRACE_EMPTY, elem_id="trace-summary", padding=False)
                with gr.Row(elem_classes=["developer-json-grid"]):
                    object_json = gr.JSON(value={}, label=copy.OBJECT_JSON_LABEL)
                    persona_json = gr.JSON(value={}, label=copy.PERSONA_JSON_LABEL)
                trace_json = gr.JSON(value={}, label=copy.TRACE_JSON_LABEL)
                trace_path = gr.Textbox(label=copy.TRACE_PATH_LABEL, interactive=False)

        manual_outputs = [
            object_file_summary,
            object_json,
            persona_json,
            diary_output,
            share_card,
            trace_summary,
            trace_json,
            trace_path,
            result_state,
            chatbot,
            archive_status,
        ]

        generate_button.click(
            fn=generate_object_file,
            inputs=[image_input, description_input, mode_input],
            outputs=manual_outputs,
        )

        for index, button in enumerate(example_buttons):
            button.click(
                fn=_example_handler(index),
                inputs=[],
                outputs=[description_input, mode_input, *manual_outputs],
            )

        chat_button.click(
            fn=chat_with_object,
            inputs=[chat_input, chatbot, result_state],
            outputs=[chatbot, chat_input],
        )
        chat_input.submit(
            fn=chat_with_object,
            inputs=[chat_input, chatbot, result_state],
            outputs=[chatbot, chat_input],
        )
        zero_gpu_probe_button.click(
            fn=zero_gpu_probe,
            inputs=[],
            outputs=[zero_gpu_probe_output],
            api_name="zero_gpu_probe",
        )
        vision_runtime_probe_button.click(
            fn=vision_runtime_probe,
            inputs=[],
            outputs=[vision_runtime_probe_output],
            api_name="vision_runtime_probe",
        )

    return demo


def _panel_header(index: str, title: str, note: str, chinese: str = "") -> str:
    chinese_label = f' <small class="lang-zh">{escape(chinese)}</small>' if chinese else ""
    return f"""
    <header class="panel-header">
      <span>{escape(index)}</span>
      <div>
        <h2>{escape(title)}{chinese_label}</h2>
        <p>{escape(note)}</p>
      </div>
    </header>
    """


def _example_handler(index: int):
    def load_example() -> tuple[Any, ...]:
        item = EXAMPLE_OBJECTS[index]
        cached_result = load_sample_generation(index)
        if cached_result is not None:
            return item["description"], item["mode"], *_format_generation_result(cached_result)

        result = generate_object_file(None, item["description"], item["mode"])
        return item["description"], item["mode"], *result

    return load_example


@zero_gpu(duration=180)
def generate_object_file(
    image_path: str | None,
    description: str,
    mode: str,
) -> GenerationUiResult:
    try:
        result = generate_object_diary(image_path, description, mode)
    except Exception as exc:  # pragma: no cover - exercised manually by UI failure paths.
        return _generation_error(exc, description, mode)

    return _format_generation_result(result)


def _format_generation_result(result: GenerationResult) -> GenerationUiResult:
    object_payload = result.object_understanding.model_dump(mode="json")
    persona_payload = result.persona.model_dump(mode="json")
    return (
        _render_object_file(result),
        object_payload,
        persona_payload,
        format_diary_markdown(result.diary.title, result.diary.english, result.diary.chinese),
        render_share_card(result.persona, result.diary),
        _render_trace_summary(result),
        result.trace.model_dump(mode="json"),
        result.trace_path,
        result.model_dump(mode="json"),
        _awake_chat_history(result),
        _render_archive_status(result),
    )


def _render_object_file(result: GenerationResult) -> str:
    obj = result.object_understanding.object
    persona = result.persona.persona
    features = "".join(f"<li>{escape(feature)}</li>" for feature in obj.visible_features)
    tags = "".join(f"<span>{escape(tag)}</span>" for tag in persona.tags)
    confidence = f"{obj.confidence:.0%}"
    case_id = _case_id(result)
    runtime_badge = "mock-safe" if "mock" in result.trace.model_runtime["text"] else "llama.cpp"
    evidence_tag = f"{result.trace.mode.lower()} witness"
    return f"""
    <article class="object-file-card">
      <div class="case-strip">
        <span>Case ID {escape(case_id)}</span>
        <span>Awake</span>
        <span>{escape(runtime_badge)}</span>
      </div>
      <div class="file-meta">
        <span>Confidence {escape(confidence)}</span>
        <span>{escape(result.trace.mode)}</span>
        <span>Evidence: {escape(evidence_tag)}</span>
      </div>
      <h3>{escape(persona.character_name)}</h3>
      <p class="object-name">{escape(obj.name)} / {escape(persona.object_name)}</p>
      <dl>
        <div>
          <dt>Mood</dt>
          <dd>{escape(persona.mood)}</dd>
        </div>
        <div>
          <dt>Secret fear</dt>
          <dd>{escape(persona.secret_fear)}</dd>
        </div>
        <div>
          <dt>Core memory</dt>
          <dd>{escape(persona.core_memory)}</dd>
        </div>
      </dl>
      <div class="feature-list">
        <strong>Visible features <span class="lang-zh">可见特征</span></strong>
        <ul>{features}</ul>
      </div>
      <p class="complaint">{escape(persona.complaint)}</p>
      <div class="file-tags">{tags}</div>
    </article>
    """


def _render_archive_status(result: GenerationResult) -> str:
    obj = result.object_understanding.object
    persona = result.persona.persona
    case_id = _case_id(result)
    return f"""
    <div class="archive-status awake">
      <div>
        <span class="archive-label">Archive Status <span class="lang-zh">档案状态</span></span>
        <strong>{escape(persona.character_name)} is awake</strong>
        <p>Case {escape(case_id)} opened for {escape(obj.name)} with {obj.confidence:.0%} object confidence.</p>
        <p class="lang-zh block">档案 {escape(case_id)} 已开启，物品识别置信度 {obj.confidence:.0%}。</p>
      </div>
      <div class="status-pills">
        <span>Object awake</span>
        <span>Diary unlocked</span>
        <span>{escape(result.trace.mode)} mode</span>
      </div>
    </div>
    """


def _render_trace_summary(result: GenerationResult) -> str:
    return f"""
    <div class="trace-card">
      <span class="archive-label">Trace saved <span class="lang-zh">Trace 已保存</span></span>
      <strong>{escape(result.trace.trace_id)}</strong>
      <p>{escape(result.trace.model_runtime["vision"])} · {escape(result.trace.model_runtime["text"])}</p>
    </div>
    """


def _generation_error(exc: Exception, description: str, mode: str) -> GenerationUiResult:
    error_type = type(exc).__name__
    error_message = str(exc) or "Unknown generation error"
    error_payload = {
        "error": error_type,
        "message": error_message,
        "input": {"description": description, "mode": mode},
    }
    error_html = f"""
    <div class="archive-error">
      <span>Generation failed <span class="lang-zh">生成失败</span></span>
      <strong>{escape(error_type)}</strong>
      <p>{escape(error_message)}</p>
    </div>
    """
    error_markdown = (
        "### Generation failed\n\n"
        f"{error_type}: {error_message}\n\n"
        "Please try another description or sample object.\n\n"
        '<div class="lang-zh block zh-helper">请尝试其他描述或示例物品。</div>'
    )
    return (
        error_html,
        error_payload,
        error_payload,
        error_markdown,
        error_html,
        error_html,
        error_payload,
        "",
        None,
        [{"role": "assistant", "content": f"Generation failed: {error_type}"}],
        f"""
        <div class="archive-status error">
          <div>
            <span class="archive-label">Archive Status <span class="lang-zh">档案状态</span></span>
            <strong>Case jammed</strong>
            <p>{escape(error_type)}: {escape(error_message)}</p>
            <p class="lang-zh block">生成失败，请换一个描述或示例物品再试。</p>
          </div>
          <div class="status-pills">
            <span>Needs retry</span>
            <span>{escape(mode)}</span>
          </div>
        </div>
        """,
    )


def _case_id(result: GenerationResult) -> str:
    return result.trace.trace_id.replace("_", "-").upper()


def _empty_chat_history() -> list[dict[str, str]]:
    return [{"role": "assistant", "content": CHAT_EMPTY_MESSAGE}]


def _awake_chat_history(result: GenerationResult) -> list[dict[str, str]]:
    name = result.persona.persona.character_name
    return [
        {
            "role": "assistant",
            "content": f"{name} is awake. Ask what it remembers.",
        }
    ]


def chat_with_object(
    message: str,
    history: list[dict[str, str]] | None,
    result_state: dict[str, Any] | None,
) -> tuple[list[dict[str, str]], str]:
    history = history or _empty_chat_history()
    clean_message = message.strip()
    if not clean_message:
        return history, ""

    if not result_state:
        reply = CHAT_EMPTY_MESSAGE
    else:
        reply = reply_as_object(result_state["persona"], clean_message)

    history.append({"role": "user", "content": clean_message})
    history.append({"role": "assistant", "content": reply})
    return history, ""


@zero_gpu(duration=30)
def zero_gpu_probe() -> dict[str, Any]:
    try:
        import torch
    except Exception as exc:
        return {"torch_import": False, "error": f"{type(exc).__name__}: {exc}"}

    cuda_available = torch.cuda.is_available()
    return {
        "torch_import": True,
        "cuda_available": cuda_available,
        "device_count": torch.cuda.device_count(),
        "device_name": torch.cuda.get_device_name(0) if cuda_available else "",
    }


@zero_gpu(duration=180)
def vision_runtime_probe() -> dict[str, Any]:
    return probe_vision_runtime(load_model=True)