"use strict";

(function (global) {
  const STORAGE_KEY = "tarinai_frozen_storage_v1";
  const MAX_PENDING_LOSSES = 16;
  const Snapshot = global.TarinaiSnapshot;
  if (!Snapshot) throw new Error("TarinaiSnapshot is not available for freeze_system.js");
  const clonePlain = Snapshot.clonePlain;

  const htmlEscape = global.TarinaiUIHelpers.htmlEscape;

  function frozenList(worldRef = global.world) {
    if (!worldRef) return [];
    if (!Array.isArray(worldRef.frozenTarinai)) worldRef.frozenTarinai = [];
    return worldRef.frozenTarinai;
  }

  function saveFrozenStore(worldRef = global.world) {
    try {
      global.localStorage?.setItem(STORAGE_KEY, JSON.stringify(frozenList(worldRef)));
    } catch (_) {}
  }

  function loadFrozenStore(worldRef = global.world) {
    if (!worldRef) return [];
    try {
      const raw = global.localStorage?.getItem(STORAGE_KEY);
      const parsed = raw ? JSON.parse(raw) : [];
      if (Array.isArray(parsed) && !worldRef.frozenTarinai?.length) worldRef.frozenTarinai = clonePlain(parsed) || [];
    } catch (_) {
      if (!Array.isArray(worldRef.frozenTarinai)) worldRef.frozenTarinai = [];
    }
    return frozenList(worldRef);
  }

  function spritePathFor(type = "smile") {
    const sprites = (typeof SPRITES !== "undefined" ? SPRITES : (global.SPRITES || []));
    const meta = sprites.find(s => s.id === type) || sprites[0];
    return meta?.path || "assets/sprites/tarinai_01_smile.webp";
  }

  function ensureStyles() {
    if (document.getElementById("freezeSystemStyles")) return;
    const style = document.createElement("style");
    style.id = "freezeSystemStyles";
    style.textContent = `
      .frozen-panel { margin-top: 10px; padding: 8px; border: 1px solid rgba(82, 63, 43, 0.18); border-radius: 14px; background: rgba(244, 249, 255, 0.72); }
      .frozen-panel-title { display:flex; align-items:center; justify-content:space-between; gap:8px; width:100%; border:0; background:transparent; padding:0; font-weight:700; font-size:13px; color:#4f5f70; margin:0; cursor:pointer; text-align:left; }
      .frozen-panel-title::before { content:"▸"; width:14px; color:rgba(79,95,112,.74); }
      .frozen-panel:not(.collapsed) .frozen-panel-title::before { content:"▾"; }
      .frozen-panel-body { margin-top:8px; }
      .frozen-panel.collapsed .frozen-panel-body { display:none; }
      .frozen-panel-count { font-size:12px; opacity:.72; }
      .frozen-list { display:grid; grid-template-columns: 1fr; gap:7px; }
      .frozen-card { display:flex; align-items:center; gap:8px; width:100%; border:1px solid rgba(72, 98, 124, .20); border-radius:12px; padding:7px; background:rgba(255,255,255,.78); cursor:grab; color:#354657; text-align:left; box-shadow: 0 2px 7px rgba(41,53,65,.06); }
      .frozen-card:active { cursor:grabbing; }
      .frozen-card.pending-thaw { outline:2px solid rgba(70, 142, 210, .46); background:rgba(227, 242, 255, .86); }
      .frozen-card img { width:34px; height:34px; object-fit:contain; flex:none; filter: drop-shadow(0 2px 3px rgba(34,44,55,.14)); }
      .frozen-card-main { min-width:0; flex:1; }
      .frozen-card-name { display:block; font-weight:700; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
      .frozen-card-meta { display:block; font-size:11px; opacity:.70; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
      .frozen-empty { font-size:12px; color:rgba(58,70,82,.68); padding:4px 2px; }
      canvas.freeze-drop-ready { outline: 3px solid rgba(70, 142, 210, .45); outline-offset: -3px; }
    `;
    document.head.appendChild(style);
  }

  function ensurePanel() {
    ensureStyles();
    let panel = document.getElementById("frozenPanel");
    if (panel) {
      const operateBody = document.querySelector('[data-tool-category="operate"] .tool-category-body');
      if (operateBody && panel.parentNode !== operateBody) operateBody.appendChild(panel);
      return panel;
    }
    panel = document.createElement("section");
    panel.id = "frozenPanel";
    panel.className = "frozen-panel";
    panel.classList.add("collapsed");
    panel.innerHTML = `
      <button class="frozen-panel-title" type="button" aria-expanded="false"><span>冷凍個体</span><span id="frozenPanelCount" class="frozen-panel-count">0</span></button>
      <div class="frozen-panel-body"><div id="frozenList" class="frozen-list"></div></div>
    `;
    const operateBody = document.querySelector('[data-tool-category="operate"] .tool-category-body');
    const anchor = global.ui?.toolPalette || document.getElementById("toolPalette");
    if (operateBody) operateBody.appendChild(panel);
    else if (anchor?.parentNode) anchor.parentNode.insertBefore(panel, anchor.nextSibling);
    else document.body.appendChild(panel);
    return panel;
  }

  function renderFrozenPanel(worldRef = global.world) {
    const panel = ensurePanel();
    const listEl = panel.querySelector("#frozenList");
    const countEl = panel.querySelector("#frozenPanelCount");
    const list = frozenList(worldRef);
    if (countEl) countEl.textContent = `${list.length}`;
    if (!listEl) return;
    if (!list.length) {
      listEl.innerHTML = `<div class="frozen-empty">冷凍中のたりないはいません。</div>`;
      return;
    }
    listEl.innerHTML = list.map(entry => {
      const data = entry.data || entry;
      const losses = Array.isArray(entry.pendingLosses) && entry.pendingLosses.length ? ` / 訃報${entry.pendingLosses.length}` : "";
      const gen = data.generation ? `第${data.generation}世代` : "";
      const id = htmlEscape(entry.freezeId || entry.id || data.familyKey || "");
      return `<button class="frozen-card" type="button" draggable="true" data-frozen-id="${id}" title="ドラッグしてフィールドに戻す">
        <img src="${htmlEscape(spritePathFor(data.type || "smile"))}" alt="">
        <span class="frozen-card-main"><span class="frozen-card-name">${htmlEscape(data.name || "たりない")}</span><span class="frozen-card-meta">${htmlEscape(gen)}${htmlEscape(losses)}</span></span>
      </button>`;
    }).join("");
  }

  function makeFrozenEntry(t, worldRef = global.world) {
    const data = Snapshot.snapshotEntity(worldRef, t, new Set(["world", "target", "panicTarget", "targetRef"]));
    data.sleeping = false;
    data.insideNestBoxId = "";
    data.state = data.state === "sleep" || data.state === "seek_bed" ? "idle" : (data.state || "idle");
    data.targetKey = "";
    const id = (global.crypto?.randomUUID ? global.crypto.randomUUID() : `frozen-${Date.now()}-${Math.random()}`);
    return {
      freezeId: id,
      frozenAt: Date.now(),
      worldTime: worldRef?.time || 0,
      name: t.name || "たりない",
      familyKey: t.familyKey || "",
      liveId: t.id || "",
      liveToken: t.liveToken || 0,
      type: t.type || "smile",
      data,
      pendingLosses: [],
    };
  }

  function findTarinaiAt(worldRef, x, y) {
    const arr = worldRef?.tarinai || [];
    for (let i = arr.length - 1; i >= 0; i--) {
      const t = arr[i];
      if (!t || t.dead) continue;
      if (worldRef.isTarinaiHiddenInNestBox?.(t)) continue;
      if (t.contains ? t.contains(x, y) : distXY(x, y, t.x, t.y) <= (t.radius || 22) * 1.35) return t;
    }
    return null;
  }

  function freezeTarinai(t, worldRef = global.world) {
    if (!t || t.dead || !worldRef) return false;
    const entry = makeFrozenEntry(t, worldRef);
    worldRef.clearLiveReferencesTo?.(t);
    if (t.id && worldRef.liveTarinai?.has?.(t.id)) worldRef.liveTarinai.delete(t.id);
    worldRef.tarinai = (worldRef.tarinai || []).filter(o => o !== t);
    if (worldRef.selected === t) worldRef.selected = null;
    frozenList(worldRef).push(entry);
    worldRef.drawListDirty = true;
    worldRef.familyTreeDirty = true;
    worldRef.updateItemCounts?.();
    worldRef.rebuildSpatial?.(true);
    saveFrozenStore(worldRef);
    renderFrozenPanel(worldRef);
    global.showToast?.(`${t.name}を冷凍保存しました。`);
    worldRef.log?.(`${t.name}をフィールド外で冷凍保存した。`, "observe", { participants: [t] });
    global.renderStats?.();
    global.render?.();
    return true;
  }

  function updateLiveIdAfterThaw(worldRef, t) {
    if (!worldRef.liveTarinai) worldRef.liveTarinai = new Map();
    const id = t.id || "";
    const conflict = id && worldRef.liveTarinai.has(id);
    if (!id || conflict) {
      worldRef.assignTarinaiLiveId?.(t);
      return;
    }
    worldRef.liveTarinai.set(id, { token: t.liveToken || 0, target: t });
    const m = /^t(\d+)$/.exec(id);
    if (m) worldRef.liveIdNext = Math.max(worldRef.liveIdNext || 1, Number(m[1]) + 1);
    worldRef.liveIdSerial = Math.max(worldRef.liveIdSerial || 0, t.liveToken || 0);
  }

  function applyPendingLossesOnThaw(t, entry, worldRef) {
    const losses = Array.isArray(entry.pendingLosses) ? entry.pendingLosses : [];
    if (!losses.length) return;
    const unique = [];
    const seen = new Set();
    for (const loss of losses) {
      const key = loss.familyKey || loss.liveId || loss.name || JSON.stringify(loss);
      if (seen.has(key)) continue;
      seen.add(key);
      unique.push(loss);
    }
    const relPriority = unique.some(l => l.relation === "親" || l.relation === "子") ? 1 : 0;
    const stress = Math.min(36, 10 + unique.length * 6 + relPriority * 8);
    if (t.enterPanic) t.enterPanic({ reason: `${unique[0]?.name || "誰か"}がいないことに気づいた`, fear: 2.4 + Math.min(2.0, unique.length * 0.35), stress, cause: "pending_relation_death" });
    else {
      t.stress = clamp((t.stress || 0) + stress, 0, 130);
      t.fearTimer = Math.max(t.fearTimer || 0, 2.4 + Math.min(2.0, unique.length * 0.35));
      t.setActionState?.("panic", { target: t.panicDestination ? t.panicDestination() : null, reason: `${unique[0]?.name || "誰か"}がいないことに気づいた`, wake: true });
    }
    t.bubble?.("いない", 1.1, "rgba(60,50,68,0.82)");
    t.recordChangeCause?.("冷凍中の訃報", "ストレス", { value: stress });
    t.addRecord?.(`冷凍中に${unique.map(l => l.name || "誰か").slice(0, 3).join("、")}が死亡していたことに気づいた。`, "death");
    worldRef.log?.(`${t.name}は解凍時に身近な個体の死に気づき、パニックになった。`, "death", { participants: [t] });
  }

  function thawFrozen(freezeId, x, y, worldRef = global.world) {
    const list = frozenList(worldRef);
    const index = list.findIndex(e => (e.freezeId || e.id) === freezeId);
    if (index < 0 || !worldRef) return false;
    const entry = list[index];
    const data = clonePlain(entry.data || entry) || {};
    let t = null;
    try {
      t = Snapshot.restoreTarinaiData(worldRef, data, { clearTransient: true });
    } catch (_) {
      return false;
    }
    t.dead = false;
    t.deathReason = "";
    t.x = clamp(Number(x) || worldRef.w / 2, CONFIG.worldPadding, worldRef.w - CONFIG.worldPadding);
    t.y = clamp(Number(y) || worldRef.h / 2, CONFIG.worldPadding, worldRef.h - CONFIG.worldPadding);
    t.vx = 0;
    t.vy = 0;
    t.target = null;
    t.panicTarget = null;
    t.insideNestBoxId = "";
    t.sleeping = false;
    if (t.state === "sleep" || t.state === "seek_bed") t.goIdle?.("解凍されて少し驚いている");
    t.surpriseTimer = Math.max(t.surpriseTimer || 0, 0.35);
    t.thought = "解凍されて少し驚いている";
    t.frozenAt = 0;
    updateLiveIdAfterThaw(worldRef, t);
    if (typeof t.refreshEffectiveSize === "function") t.refreshEffectiveSize();
    worldRef.tarinai.push(t);
    worldRef.recordFamily?.(t);
    applyPendingLossesOnThaw(t, entry, worldRef);
    list.splice(index, 1);
    worldRef.selected = t;
    worldRef.drawListDirty = true;
    worldRef.familyTreeDirty = true;
    worldRef.updateItemCounts?.();
    worldRef.rebuildSpatial?.(true);
    saveFrozenStore(worldRef);
    renderFrozenPanel(worldRef);
    global.showToast?.(`${t.name}を解凍しました。`);
    worldRef.log?.(`${t.name}を解凍してフィールドに戻した。`, "birth", { participants: [t] });
    global.renderStats?.();
    global.render?.();
    return true;
  }

  function bindFreezeSystem() {
    const worldRef = global.world;
    loadFrozenStore(worldRef);
    renderFrozenPanel(worldRef);
    const panel = ensurePanel();
    if (panel.dataset.freezeBound !== "1") {
      panel.dataset.freezeBound = "1";
      panel.addEventListener("click", (e) => {
        const title = e.target.closest(".frozen-panel-title");
        if (!title) return;
        const collapsed = !panel.classList.toggle("collapsed");
        title.setAttribute("aria-expanded", collapsed ? "true" : "false");
      });
      panel.addEventListener("dragstart", (e) => {
        const card = e.target.closest(".frozen-card[data-frozen-id]");
        if (!card) return;
        const id = card.dataset.frozenId || "";
        e.dataTransfer?.setData("text/plain", `tarinai-frozen:${id}`);
        e.dataTransfer?.setData("application/x-tarinai-frozen", id);
        e.dataTransfer.effectAllowed = "move";
        global.document?.querySelector("canvas")?.classList.add("freeze-drop-ready");
      });
      panel.addEventListener("dragend", () => global.document?.querySelector("canvas")?.classList.remove("freeze-drop-ready"));
      panel.addEventListener("click", (e) => {
        const card = e.target.closest(".frozen-card[data-frozen-id]");
        if (!card) return;
        pendingThawId = card.dataset.frozenId || "";
        for (const c of panel.querySelectorAll(".frozen-card")) c.classList.toggle("pending-thaw", c === card);
        global.showToast?.("フィールドをクリックすると解凍します。ドラッグ&ドロップでも配置できます。");
      });
    }
    const canvas = global.canvas || document.getElementById("gameCanvas");
    if (canvas && canvas.dataset.freezeDropBound !== "1") {
      canvas.dataset.freezeDropBound = "1";
      canvas.addEventListener("dragover", (e) => {
        const text = e.dataTransfer?.types?.includes?.("application/x-tarinai-frozen") || [...(e.dataTransfer?.types || [])].includes("text/plain");
        if (!text) return;
        e.preventDefault();
        e.dataTransfer.dropEffect = "move";
        canvas.classList.add("freeze-drop-ready");
      });
      canvas.addEventListener("dragleave", () => canvas.classList.remove("freeze-drop-ready"));
      canvas.addEventListener("drop", (e) => {
        const id = e.dataTransfer?.getData("application/x-tarinai-frozen") || String(e.dataTransfer?.getData("text/plain") || "").replace(/^tarinai-frozen:/, "");
        if (!id) return;
        e.preventDefault();
        canvas.classList.remove("freeze-drop-ready");
        const p = typeof global.screenToWorld === "function" ? global.screenToWorld(e) : (() => {
          const rect = canvas.getBoundingClientRect();
          const sx = e.clientX - rect.left;
          const sy = e.clientY - rect.top;
          return worldRef.screenToWorld ? worldRef.screenToWorld(sx, sy) : { x: sx, y: sy, inside: true };
        })();
        thawFrozen(id, p.x, p.y, worldRef);
      });
    }
  }

  let pendingThawId = "";

  function tryPendingThawAt(x, y, worldRef = global.world) {
    if (!pendingThawId) return false;
    const id = pendingThawId;
    pendingThawId = "";
    document.querySelectorAll(".frozen-card.pending-thaw").forEach(el => el.classList.remove("pending-thaw"));
    return thawFrozen(id, x, y, worldRef);
  }

  function afterSnapshotRestored(worldRef = global.world) {
    if (!Array.isArray(worldRef?.frozenTarinai)) worldRef.frozenTarinai = [];
    saveFrozenStore(worldRef);
    renderFrozenPanel(worldRef);
  }

  function patchWorldPrototype() {
    const apply = (proto) => {
      const originalHandleClick = proto.handleClick;
      proto.handleClick = function (x, y) {
        if (tryPendingThawAt(x, y, this)) return;
        if (this.tool === "freeze") {
          global.showToast?.("冷凍は『つまむ』でたりないを冷凍個体UIへ運んでください。");
          return;
        }
        return originalHandleClick.call(this, x, y);
      };
    };
    if (global.TarinaiPatcher?.patchWorld?.("freezeSystem", apply)) return;
    const World = global.World;
    if (!World || World.prototype.__freezeSystemPatched) return;
    World.prototype.__freezeSystemPatched = true;
    apply(World.prototype);
  }

  patchWorldPrototype();

  global.TarinaiFreezeSystem = {
    bindFreezeSystem,
    renderFrozenPanel,
    freezeTarinai,
    thawFrozen,
    frozenList,
    loadFrozenStore,
    saveFrozenStore,
    afterSnapshotRestored,
  };
})(typeof window !== "undefined" ? window : globalThis);