/* 小镇角落小店 — 可玩 Vue 3 前端 */
const { createApp, ref, computed, watch, onMounted, nextTick } = Vue;

const STATE_COLOR = {
  SPAWNING: "#b0a8a0",
  BROWSE: "#6fa8dc",
  LINGER: "#8fbf7f",
  CONSIDER: "#e0b050",
  QUEUE: "#d49050",
  PAY: "#c06060",
  TALK: "#9b7ed9",
  EXIT: "#888",
};
const CELL = 48;

createApp({
  setup() {
    const view = ref(null);
    const sessionId = ref(null);
    /** 仅用户点击操作时锁定；自动流逝绝不改 busy，避免按钮狂闪 */
    const busy = ref(false);
    const error = ref("");
    const speed = ref(180);
    const showNight = ref(false);
    const showHelp = ref(true);
    const nightDay = ref(null);
    const canvas = ref(null);
    const restockId = ref("");
    const stockPid = ref("");
    const stockSlot = ref("");
    const toasts = ref([]);
    const floaters = ref([]);
    const flavor = ref(
      localStorage.getItem("town-shop-flavor") === "latte" ? "latte" : "mocha"
    );
    let autoTimer = null;
    let autoInFlight = false;
    let toastSeq = 0;
    let floatSeq = 0;
    const imgCache = new Map();

    function setFlavor(name) {
      flavor.value = name === "latte" ? "latte" : "mocha";
      document.documentElement.setAttribute("data-flavor", flavor.value);
      localStorage.setItem("town-shop-flavor", flavor.value);
      const meta = document.querySelector('meta[name="theme-color"]');
      if (meta) meta.setAttribute("content", flavor.value === "latte" ? "#eff1f5" : "#1e1e2e");
      nextTick(draw);
    }

    function ctp(name, fallback) {
      const v = getComputedStyle(document.documentElement).getPropertyValue(name).trim();
      return v || fallback;
    }

    const reversedLog = computed(() => [...(view.value?.log || [])].reverse());
    const catalogOptions = computed(() => view.value?.catalog || []);
    const stockOptions = computed(() => {
      const inv = view.value?.inventory || [];
      return inv.length ? inv : catalogOptions.value;
    });
    const bgStyle = computed(() => {
      const bg = view.value?.art?.shop_bg;
      return bg ? { backgroundImage: `url(/${bg})` } : {};
    });

    function isHere(agentId) {
      return (view.value?.agents || []).some((a) => a.agent_id === agentId);
    }

    function img(src) {
      if (!src) return null;
      if (imgCache.has(src)) return imgCache.get(src);
      const im = new Image();
      im.onload = () => draw();
      im.src = "/" + String(src).replace(/^\//, "");
      imgCache.set(src, im);
      return im;
    }

    function pushToast(text, kind = "info") {
      const id = ++toastSeq;
      toasts.value = [...toasts.value, { id, text, kind }].slice(-5);
      setTimeout(() => {
        toasts.value = toasts.value.filter((t) => t.id !== id);
      }, 3200);
    }

    function pushFloater(text, kind = "sale") {
      const id = ++floatSeq;
      floaters.value = [...floaters.value, { id, text, kind }].slice(-4);
      setTimeout(() => {
        floaters.value = floaters.value.filter((f) => f.id !== id);
      }, 1600);
    }

    async function api(path, opts = {}) {
      const res = await fetch(path, {
        headers: { "Content-Type": "application/json", ...(opts.headers || {}) },
        ...opts,
      });
      if (!res.ok) {
        let detail = res.statusText;
        try {
          const j = await res.json();
          detail = j.detail || JSON.stringify(j);
        } catch (_) {}
        throw new Error(typeof detail === "string" ? detail : "请求失败");
      }
      return res.json();
    }

    function apply(payload, { fromAuto = false } = {}) {
      view.value = payload.view;
      sessionId.value = payload.session_id || sessionId.value;
      syncSelects();

      // 自动流逝时只提示「进店/成交」，避免每帧 toast 刷屏
      const toastsIn = payload.view?.toasts || [];
      for (const t of toastsIn) {
        if (fromAuto && t.kind === "info" && !/进店|成交|收入|营收|夜幕/.test(t.text || "")) {
          continue;
        }
        pushToast(t.text, t.kind || "info");
      }
      for (const ev of payload.view?.events || []) {
        if (ev.type === "sale") pushFloater(ev.text, "sale");
        if (ev.type === "enter") pushFloater(ev.text, "enter");
      }

      const m = payload.view?.meta;
      if (m?.phase === "NIGHT" && payload.view.night && nightDay.value !== m.day_index) {
        nightDay.value = m.day_index;
        showNight.value = true;
      }
      // 自动 tick 由 ensureAuto 的串行 loop 自己排程，这里不要每次重建
      if (!fromAuto) {
        ensureAuto();
      } else if (m?.phase === "NIGHT" || m?.phase === "PREP") {
        stopAuto();
      }
      nextTick(draw);
    }

    function syncSelects() {
      const cat = catalogOptions.value;
      const stock = stockOptions.value;
      if (!restockId.value && cat[0]) restockId.value = cat[0].product_id;
      if (!stockPid.value && stock[0]) stockPid.value = stock[0].product_id;
      const slots = view.value?.displays || [];
      if (!stockSlot.value && slots[0]) stockSlot.value = slots[0].slot;
    }

    function stopAuto() {
      if (autoTimer) {
        clearTimeout(autoTimer);
        autoTimer = null;
      }
    }

    async function autoTickOnce() {
      if (!sessionId.value || autoInFlight || busy.value) return;
      if (!view.value?.ui?.can_tick || view.value.meta.paused) return;
      autoInFlight = true;
      try {
        const data = await api(`/api/session/${sessionId.value}/tick`, {
          method: "POST",
          body: JSON.stringify({
            steps: 1,
            delta: 0.25,
            skip_idle: true,
            max_skip: 60,
          }),
        });
        apply(data, { fromAuto: true });
      } catch (e) {
        // 自动流逝失败不闪按钮，只记一条
        console.warn(e);
      } finally {
        autoInFlight = false;
      }
    }

    function ensureAuto() {
      stopAuto();
      const ms = Number(speed.value);
      if (!ms) return;
      if (!view.value?.ui?.can_tick) return;
      if (view.value.meta.paused) return;

      const loop = async () => {
        autoTimer = null;
        if (!view.value?.ui?.can_tick || view.value.meta.paused || !Number(speed.value)) {
          return;
        }
        await autoTickOnce();
        // 仍在营业中再排下一次（串行，绝不重叠）
        if (view.value?.ui?.can_tick && !view.value.meta.paused && Number(speed.value)) {
          autoTimer = setTimeout(loop, Number(speed.value));
        }
      };
      autoTimer = setTimeout(loop, ms);
    }

    // 兼容模板里的 @change="setupAuto"
    function setupAuto() {
      ensureAuto();
    }

    async function newGame() {
      if (busy.value) return;
      busy.value = true;
      stopAuto();
      error.value = "";
      try {
        const seed = 7 + Math.floor(Math.random() * 90);
        const data = await api("/api/session", {
          method: "POST",
          body: JSON.stringify({ seed, pace: "Brisk" }),
        });
        nightDay.value = null;
        showNight.value = false;
        apply(data);
      } catch (e) {
        error.value = e.message || "开局失败";
        view.value = null;
      } finally {
        busy.value = false;
      }
    }

    /** 用户主动操作：可短暂 busy；不重建 auto 定时器（由 ensureAuto 按阶段处理） */
    async function act(path, body, { lock = true } = {}) {
      if (!sessionId.value) return;
      if (lock && busy.value) return;
      if (lock) busy.value = true;
      // 用户操作时暂停自动一轮，避免抢请求
      const wasAuto = !!Number(speed.value) && view.value?.ui?.can_tick;
      if (lock) stopAuto();
      try {
        const data = await api(`/api/session/${sessionId.value}${path}`, {
          method: "POST",
          body: body !== undefined ? JSON.stringify(body) : undefined,
        });
        apply(data);
      } catch (e) {
        pushToast(e.message, "err");
      } finally {
        if (lock) busy.value = false;
        if (wasAuto) ensureAuto();
      }
    }

    const openShop = async () => {
      await act("/open");
      if (speed.value === 0) speed.value = 180;
      ensureAuto();
    };
    const sleep = () => act("/sleep");
    const tickOnce = () =>
      act("/tick", { steps: 1, delta: 0.25, skip_idle: true, max_skip: 80 });
    const fastNight = () => act("/run_to_night");
    const setLight = (mode) => act("/set_light", { mode });
    const togglePause = async () => {
      await act("/pause", { paused: !view.value?.meta?.paused });
      ensureAuto();
    };
    const restock = () => act("/restock", { product_id: restockId.value, qty: 1 });
    const stock = () =>
      act("/stock_display", {
        product_id: stockPid.value,
        slot_id: stockSlot.value,
        qty: 1,
      });

    async function quickPrep() {
      if (busy.value) return;
      busy.value = true;
      stopAuto();
      try {
        const picks = (catalogOptions.value || []).slice(0, 3);
        for (const p of picks) {
          try {
            const data = await api(`/api/session/${sessionId.value}/restock`, {
              method: "POST",
              body: JSON.stringify({ product_id: p.product_id, qty: 2 }),
            });
            apply(data);
          } catch (_) {}
        }
        const empty = (view.value?.displays || []).filter((d) => !d.qty);
        const inv = stockOptions.value;
        for (let i = 0; i < Math.min(empty.length, inv.length); i++) {
          try {
            const data = await api(`/api/session/${sessionId.value}/stock_display`, {
              method: "POST",
              body: JSON.stringify({
                product_id: inv[i].product_id,
                slot_id: empty[i].slot,
                qty: 1,
              }),
            });
            apply(data);
          } catch (_) {}
        }
        pushToast("备货完成，可以开始营业了", "info");
      } finally {
        busy.value = false;
      }
    }

    function roundRect(ctx, x, y, w, h, r) {
      ctx.beginPath();
      ctx.moveTo(x + r, y);
      ctx.arcTo(x + w, y, x + w, y + h, r);
      ctx.arcTo(x + w, y + h, x, y + h, r);
      ctx.arcTo(x, y + h, x, y, r);
      ctx.arcTo(x, y, x + w, y, r);
      ctx.closePath();
    }

    function drawBubble(ctx, x, y, text) {
      const t = String(text).slice(0, 18);
      const peach = ctp("--ctp-peach", "#fab387");
      const base = ctp("--ctp-mantle", "#181825");
      const ink = ctp("--ctp-text", "#cdd6f4");
      ctx.font = "12px 'JetBrains Mono','PingFang SC','Microsoft YaHei',sans-serif";
      const tw = ctx.measureText(t).width;
      const bw = tw + 16;
      const bh = 24;
      const bx = x - bw / 2;
      const by = y - bh - 10;
      ctx.fillStyle = base;
      ctx.strokeStyle = peach;
      roundRect(ctx, bx, by, bw, bh, 10);
      ctx.fill();
      ctx.stroke();
      ctx.fillStyle = ink;
      ctx.textAlign = "center";
      ctx.fillText(t, x, by + 16);
      ctx.textAlign = "left";
    }

    function draw() {
      const el = canvas.value;
      if (!el || !view.value) return;
      const ctx = el.getContext("2d");
      const w = el.width;
      const h = el.height;
      const base = ctp("--ctp-base", "#1e1e2e");
      const surface0 = ctp("--ctp-surface0", "#313244");
      const surface1 = ctp("--ctp-surface1", "#45475a");
      const text = ctp("--ctp-text", "#cdd6f4");
      const subtext = ctp("--ctp-subtext0", "#a6adc8");
      const peach = ctp("--ctp-peach", "#fab387");
      const sky = ctp("--ctp-sky", "#89dceb");
      const crust = ctp("--ctp-crust", "#11111b");

      ctx.clearRect(0, 0, w, h);
      ctx.fillStyle = base;
      ctx.fillRect(0, 0, w, h);

      const v = view.value;
      const gw = v.grid.w;
      const gh = v.grid.h;
      const tags = v.grid.cell_tags || {};
      const markersZh = v.grid.markers_zh || {};

      for (let y = 0; y < gh; y++) {
        for (let x = 0; x < gw; x++) {
          const px = x * CELL;
          const py = y * CELL;
          const t = tags[`${x},${y}`] || [];
          if (t.includes("wall") && t.includes("window")) ctx.fillStyle = sky + "66";
          else if (t.includes("wall")) ctx.fillStyle = surface1 + "cc";
          else if (t.includes("is_entrance")) ctx.fillStyle = peach + "55";
          else ctx.fillStyle = (x + y) % 2 === 0 ? surface0 + "aa" : surface1 + "66";
          ctx.fillRect(px, py, CELL, CELL);
        }
      }

      for (const f of v.furniture || []) {
        const px = f.x * CELL;
        const py = f.y * CELL;
        const im = img(f.sprite);
        if (im && im.complete && im.naturalWidth) {
          ctx.save();
          roundRect(ctx, px + 2, py + 2, CELL - 4, CELL - 4, 8);
          ctx.clip();
          ctx.drawImage(im, px + 2, py + 2, CELL - 4, CELL - 4);
          ctx.restore();
        } else {
          ctx.fillStyle = "rgba(120,90,70,0.5)";
          roundRect(ctx, px + 6, py + 6, CELL - 12, CELL - 12, 6);
          ctx.fill();
        }
        ctx.fillStyle = text;
        ctx.font = "11px 'JetBrains Mono','PingFang SC','Microsoft YaHei',sans-serif";
        ctx.fillText(String(f.name || "").slice(0, 6), px + 4, py + CELL - 5);
      }

      const slotPos = {};
      for (const f of v.furniture || []) {
        for (const s of f.slots || []) slotPos[s] = [f.x, f.y];
      }
      let di = 0;
      for (const d of v.displays || []) {
        if (!d.product_id || !d.qty) continue;
        const [sx, sy] = slotPos[d.slot] || [1 + (di % 4), 3];
        di++;
        const px = sx * CELL + 28;
        const py = sy * CELL + 4;
        const im = img(d.sprite);
        ctx.fillStyle = "rgba(255,255,255,0.95)";
        ctx.beginPath();
        ctx.arc(px, py + 14, 13, 0, Math.PI * 2);
        ctx.fill();
        if (im && im.complete && im.naturalWidth) {
          ctx.save();
          ctx.beginPath();
          ctx.arc(px, py + 14, 12, 0, Math.PI * 2);
          ctx.clip();
          ctx.drawImage(im, px - 12, py + 2, 24, 24);
          ctx.restore();
        }
        ctx.fillStyle = text;
        ctx.font = "bold 11px 'JetBrains Mono',sans-serif";
        ctx.fillText("×" + d.qty, px + 12, py + 18);
      }

      for (const [name, xy] of Object.entries(v.grid.markers || {})) {
        ctx.fillStyle = subtext;
        ctx.font = "10px 'JetBrains Mono','PingFang SC','Microsoft YaHei',sans-serif";
        ctx.fillText(markersZh[name] || name, xy[0] * CELL + 3, xy[1] * CELL + 12);
      }

      // 客人放大绘制
      for (const a of v.agents || []) {
        const [ax, ay] = a.xy || [5, 9];
        const px = ax * CELL + CELL / 2;
        const py = ay * CELL + CELL / 2;
        const col = STATE_COLOR[a.state] || "#888";
        // 光晕
        ctx.beginPath();
        ctx.arc(px, py, 22, 0, Math.PI * 2);
        ctx.fillStyle = col + "55";
        ctx.fill();
        ctx.beginPath();
        ctx.arc(px, py, 18, 0, Math.PI * 2);
        ctx.fillStyle = col;
        ctx.fill();
        ctx.lineWidth = 3;
        ctx.strokeStyle = "#fff";
        ctx.stroke();
        const portrait = img(a.portrait);
        if (portrait && portrait.complete && portrait.naturalWidth) {
          ctx.save();
          ctx.beginPath();
          ctx.arc(px, py, 15, 0, Math.PI * 2);
          ctx.clip();
          ctx.drawImage(portrait, px - 15, py - 15, 30, 30);
          ctx.restore();
        }
        ctx.fillStyle = text;
        ctx.font = "bold 12px 'JetBrains Mono','PingFang SC','Microsoft YaHei',sans-serif";
        ctx.textAlign = "center";
        ctx.fillText(a.name || "", px, py + 32);
        ctx.font = "11px 'JetBrains Mono','PingFang SC','Microsoft YaHei',sans-serif";
        ctx.fillStyle = col;
        ctx.fillText(a.state_zh || "", px, py + 46);
        ctx.textAlign = "left";
        if (a.bark) drawBubble(ctx, px, py - 22, a.bark);
      }
    }

    watch(view, () => nextTick(draw), { deep: true });

    onMounted(async () => {
      setFlavor(flavor.value);
      await newGame();
      setInterval(() => {
        if (view.value) draw();
      }, 500);
    });

    return {
      view,
      busy,
      error,
      speed,
      showNight,
      showHelp,
      canvas,
      restockId,
      stockPid,
      stockSlot,
      reversedLog,
      catalogOptions,
      stockOptions,
      bgStyle,
      toasts,
      floaters,
      flavor,
      setFlavor,
      isHere,
      newGame,
      openShop,
      sleep,
      tickOnce,
      fastNight,
      setLight,
      togglePause,
      restock,
      stock,
      quickPrep,
      setupAuto,
    };
  },
}).mount("#app");