// svrnty-bte: BTE Command Center panel — brand asset gen + rate + iterate.
// IIFE, idempotent, namespace window.SvrntyBTE. Class prefix .svrnty-bte-*.
// Per COMMAND-CENTER-PRD §3 + PLANB-RECIPE-TAXONOMY.md §5.
(function () {
  "use strict";
  if (window.__svrntyBteLoaded) return;
  window.__svrntyBteLoaded = true;

  // ── Taxonomy (mirror of sot/07-BRAND/PLANB-RECIPE-TAXONOMY.md) ─────────────
  const MODES = [
    { slug: "polished",  label: "Polished" },
    { slug: "ugc",       label: "UGC" },
    { slug: "photoreal", label: "Photorealistic" },
    { slug: "artistic",  label: "Artistic" },
  ];
  const MEDIA = [
    { slug: "image", label: "Image",                 enabled: true  },
    { slug: "video", label: "Video (soon)",          enabled: false },
  ];
  const FAMILIES = [
    { slug: "hero-shot",        label: "Hero Shot" },
    { slug: "lifestyle-shot",   label: "Lifestyle Shot" },
    { slug: "photoshoot",       label: "Photoshoot" },
    { slug: "recipe-sheet",     label: "Recipe Sheet" },
    { slug: "montage-catalog",  label: "Montage Catalog" },
  ];
  // Placeholder SKUs — to be replaced with Woo catalog when piped in.
  const PLACEHOLDER_SKUS = [
    { id: "42", name: "Poulet tao (placeholder)" },
    { id: "43", name: "Boeuf bourguignon (placeholder)" },
    { id: "44", name: "Saumon teriyaki (placeholder)" },
    { id: "45", name: "Tofu sauté (placeholder)" },
  ];
  const PROXY_BASE = "/api/bte/proxy?path=";
  const POLL_INTERVAL_MS = 2000;

  // ── State ────────────────────────────────────────────────────────────────
  const state = {
    brand: "planb",
    mode: "polished",
    media: "image",
    family: null,
    skuId: null,
    variants: 4,
    batch: false,
    runId: null,
    assets: [],          // [{id, thumbUrl, lifecycle, ratingCount, meanScore, recipeSlug, ...}]
    selected: null,      // asset id
    pollTimer: null,
    log: [],
  };

  // ── Public namespace ─────────────────────────────────────────────────────
  const SvrntyBTE = {
    open: () => _openOverlay(),
    close: () => _closeOverlay(),
    state,
  };
  window.SvrntyBTE = SvrntyBTE;

  // ── Init: listen for sidebar nav events from svrnty_nav.js ───────────────
  // The floating launcher is gone; sidebar button (injected by svrnty_nav.js)
  // calls switchPanel('bte') which sets main.svrnty-showing-bte. We mirror
  // that with overlay open/close + remove any stale launcher from prior load.
  function _init() {
    // Remove any prior floating launcher (older plugin versions injected one).
    document.querySelectorAll(".svrnty-bte-launcher").forEach((el) => el.remove());
    window.addEventListener("svrnty:panel-switch", (ev) => {
      const name = ev && ev.detail && ev.detail.name;
      if (name === "bte") _openOverlay();
      else _closeOverlay();
    });
    // If page boots already on bte (deep link via switchPanel), show now.
    const main = document.querySelector("main.main");
    if (main && main.classList.contains("svrnty-showing-bte")) _openOverlay();
  }

  // ── Overlay lifecycle ────────────────────────────────────────────────────
  // Mount inside <main> so the left sidebar stays visible. CSS
  // (.svrnty-bte-overlay rules in bte.css) handles show/hide via
  // main.svrnty-showing-bte class set by svrnty_nav.js wrapper.
  function _openOverlay() {
    let overlay = document.getElementById("svrntyBteOverlay");
    const mountTarget = document.querySelector("main.main") || document.body;
    if (!overlay) {
      overlay = _buildOverlay();
      mountTarget.appendChild(overlay);
    } else if (overlay.parentElement !== mountTarget && mountTarget.tagName === "MAIN") {
      // Migrate from body to main (handles older sessions that mounted on body).
      mountTarget.appendChild(overlay);
    }
    overlay.hidden = false;
    _refreshGrid();
  }

  function _closeOverlay() {
    const overlay = document.getElementById("svrntyBteOverlay");
    if (overlay) overlay.hidden = true;
    if (state.pollTimer) {
      clearInterval(state.pollTimer);
      state.pollTimer = null;
    }
  }

  // ── Overlay DOM build ────────────────────────────────────────────────────
  function _buildOverlay() {
    const root = document.createElement("div");
    root.id = "svrntyBteOverlay";
    root.className = "svrnty-bte-overlay";

    root.appendChild(_buildToolbar());
    const body = document.createElement("div");
    body.className = "svrnty-bte-body";
    body.appendChild(_buildMain());
    body.appendChild(_buildRail());
    root.appendChild(body);
    return root;
  }

  function _buildToolbar() {
    const bar = document.createElement("div");
    bar.className = "svrnty-bte-toolbar";

    const title = document.createElement("span");
    title.className = "svrnty-bte-toolbar-title";
    title.textContent = "BTE Command Center";
    bar.appendChild(title);

    // Brand selector (single-option for now — Plan B)
    bar.appendChild(_labeled("Brand", _select("svrntyBteBrand",
      [{ value: "planb", label: "Plan B" }],
      state.brand, (v) => { state.brand = v; })));

    // Content mode pills
    bar.appendChild(_pillGroup("Mode", "svrnty-bte-pill-mode", MODES, state.mode, (v) => {
      state.mode = v; _updateToolbarPressed(); _updateGenerateEnabled();
    }));

    // Media toggle
    bar.appendChild(_pillGroup("Media", "svrnty-bte-pill-media",
      MEDIA.map((m) => ({ slug: m.slug, label: m.label, disabled: !m.enabled })),
      state.media, (v) => {
        state.media = v; _updateToolbarPressed(); _updateGenerateEnabled();
      }));

    // Recipe family pills
    bar.appendChild(_pillGroup("Recipe", "svrnty-bte-pill-family", FAMILIES, state.family, (v) => {
      state.family = v; _updateToolbarPressed(); _updateGenerateEnabled(); _refreshGrid();
    }));

    // SKU dropdown
    const skuOpts = [{ value: "", label: "— pick SKU —" }].concat(
      PLACEHOLDER_SKUS.map((s) => ({ value: s.id, label: s.name })));
    bar.appendChild(_labeled("SKU", _select("svrntyBteSku", skuOpts, state.skuId || "", (v) => {
      state.skuId = v || null; _updateGenerateEnabled();
    })));

    // Variants stepper
    const stepper = document.createElement("input");
    stepper.type = "number";
    stepper.min = "1"; stepper.max = "12"; stepper.value = String(state.variants);
    stepper.className = "svrnty-bte-stepper";
    stepper.addEventListener("change", () => {
      const n = parseInt(stepper.value, 10);
      state.variants = isNaN(n) ? 1 : Math.max(1, Math.min(12, n));
      stepper.value = String(state.variants);
    });
    bar.appendChild(_labeled("Variants", stepper));

    // Batch toggle
    bar.appendChild(_pillGroup("Run", "svrnty-bte-pill-batch",
      [{ slug: "single", label: "Single" }, { slug: "batch", label: "Batch" }],
      state.batch ? "batch" : "single",
      (v) => { state.batch = (v === "batch"); }));

    // Generate button
    const gen = document.createElement("button");
    gen.id = "svrntyBteGenerate";
    gen.className = "svrnty-bte-generate";
    gen.type = "button";
    gen.textContent = "Generate";
    gen.disabled = true;
    gen.addEventListener("click", _onGenerate);
    bar.appendChild(gen);

    // Close
    const close = document.createElement("button");
    close.className = "svrnty-bte-close";
    close.type = "button";
    close.textContent = "Close";
    close.addEventListener("click", _closeOverlay);
    bar.appendChild(close);

    return bar;
  }

  function _buildMain() {
    const main = document.createElement("div");
    main.className = "svrnty-bte-main";
    main.id = "svrntyBteMain";
    main.innerHTML =
      '<div id="svrntyBteBanner"></div>' +
      '<div class="svrnty-bte-empty" id="svrntyBteEmpty">' +
      'Pick a mode, recipe family, and SKU to begin. Recent renders for the selected cell will appear here.' +
      '</div>' +
      '<div class="svrnty-bte-grid" id="svrntyBteGrid"></div>' +
      '<div id="svrntyBteDetail"></div>';
    return main;
  }

  function _buildRail() {
    const rail = document.createElement("div");
    rail.className = "svrnty-bte-rail";
    rail.innerHTML =
      '<div class="svrnty-bte-rail-section">' +
        '<h4>CMO chat</h4>' +
        '<p>Tell CMO what to change about the next batch — warmer light, less white space, different framing — then re-run.</p>' +
        '<button class="svrnty-bte-cmo-link" id="svrntyBteCmoOpen" type="button">Open CMO chat →</button>' +
      '</div>' +
      '<div class="svrnty-bte-rail-section">' +
        '<h4>Run status</h4>' +
        '<div class="svrnty-bte-run-log" id="svrntyBteRunLog">No active run.</div>' +
      '</div>' +
      '<div class="svrnty-bte-rail-section">' +
        '<h4>Selected cell</h4>' +
        '<p id="svrntyBteCellLabel">—</p>' +
      '</div>';
    // CMO chat link: simplest honest path — switch the WebUI rail to the chat
    // panel so JP can talk to whichever profile is active. Real CMO-scoped
    // iframe deferred (PRD §6.5 option A — Phase E).
    setTimeout(() => {
      const cmoBtn = document.getElementById("svrntyBteCmoOpen");
      if (cmoBtn) cmoBtn.addEventListener("click", _openCmoChat);
    }, 0);
    return rail;
  }

  // ── DOM helpers ──────────────────────────────────────────────────────────
  function _labeled(label, child) {
    const wrap = document.createElement("div");
    wrap.className = "svrnty-bte-toolbar-group";
    const lab = document.createElement("span");
    lab.className = "svrnty-bte-toolbar-label";
    lab.textContent = label;
    wrap.appendChild(lab);
    wrap.appendChild(child);
    return wrap;
  }

  function _select(id, options, value, onChange) {
    const sel = document.createElement("select");
    sel.id = id;
    sel.className = "svrnty-bte-select";
    options.forEach((o) => {
      const opt = document.createElement("option");
      opt.value = o.value;
      opt.textContent = o.label;
      if (o.value === value) opt.selected = true;
      sel.appendChild(opt);
    });
    sel.addEventListener("change", () => onChange(sel.value));
    return sel;
  }

  function _pillGroup(label, className, items, currentValue, onPick) {
    const wrap = document.createElement("div");
    wrap.className = "svrnty-bte-toolbar-group";
    const lab = document.createElement("span");
    lab.className = "svrnty-bte-toolbar-label";
    lab.textContent = label;
    wrap.appendChild(lab);
    items.forEach((it) => {
      const btn = document.createElement("button");
      btn.type = "button";
      btn.className = "svrnty-bte-pill " + className;
      btn.dataset.value = it.slug;
      btn.textContent = it.label;
      btn.setAttribute("aria-pressed", it.slug === currentValue ? "true" : "false");
      if (it.disabled) btn.disabled = true;
      btn.addEventListener("click", () => {
        if (btn.disabled) return;
        onPick(it.slug);
      });
      wrap.appendChild(btn);
    });
    return wrap;
  }

  function _updateToolbarPressed() {
    const sync = (cls, val) => {
      document.querySelectorAll("." + cls).forEach((b) => {
        b.setAttribute("aria-pressed", b.dataset.value === val ? "true" : "false");
      });
    };
    sync("svrnty-bte-pill-mode", state.mode);
    sync("svrnty-bte-pill-media", state.media);
    sync("svrnty-bte-pill-family", state.family);
    sync("svrnty-bte-pill-batch", state.batch ? "batch" : "single");
    _renderCellLabel();
  }

  function _updateGenerateEnabled() {
    const gen = document.getElementById("svrntyBteGenerate");
    if (!gen) return;
    gen.disabled = !(state.mode && state.media && state.family && state.skuId);
  }

  function _renderCellLabel() {
    const el = document.getElementById("svrntyBteCellLabel");
    if (!el) return;
    if (!state.family) { el.textContent = "—"; return; }
    el.textContent = `${state.family}__${state.mode}__${state.media}`;
  }

  // ── Generate flow ────────────────────────────────────────────────────────
  function _onGenerate() {
    if (!state.family || !state.skuId) return;
    const sku = PLACEHOLDER_SKUS.find((s) => s.id === state.skuId);
    const recipeLabel = `${state.family}__${state.mode}__${state.media}`;
    const body = {
      brandId: state.brand,
      recipeSlug: state.family,
      recipeLabel: recipeLabel,
      items: [{ offeringId: parseInt(state.skuId, 10), offeringName: sku ? sku.name : state.skuId }],
      variantsPerScenario: state.variants,
      tags: { source: "svrnty-bte-panel" },
    };
    _log(`POST requestPhotoshoot (${recipeLabel}, sku=${state.skuId}, variants=${state.variants})`);
    _proxyPost("/api/command/requestPhotoshoot", body)
      .then((resp) => {
        if (resp.status === 404 || resp.status === 501) {
          _banner("BTE endpoint /api/command/requestPhotoshoot not yet implemented — see COMMAND-CENTER-PRD §5.8 (status: implementing).", "warn");
          _log(`← ${resp.status} (endpoint not yet built)`);
          return;
        }
        if (!resp.ok) {
          _banner(`BTE returned ${resp.status}: ${resp.bodyText.slice(0, 200)}`, "warn");
          _log(`← ${resp.status} ${resp.bodyText.slice(0, 80)}`);
          return;
        }
        const json = _safeJson(resp.bodyText) || {};
        state.runId = json.runId || json.run_id || null;
        _log(`← runId=${state.runId || "(none)"}, assetIds=${(json.assetIds || []).length}`);
        _banner(`Run ${state.runId || "started"} — polling grid every ${POLL_INTERVAL_MS / 1000}s.`, "info");
        _startPolling();
      })
      .catch((e) => {
        _banner(`Proxy error: ${e.message}`, "warn");
        _log(`× ${e.message}`);
      });
  }

  // ── Grid refresh + polling ───────────────────────────────────────────────
  function _refreshGrid() {
    if (!state.family) return;
    const filters = {
      brandId: state.brand,
      recipeSlug: state.family,
      lifecycle: ["approved", "generating", "evaluating"],
    };
    if (state.runId) filters.runId = state.runId;
    const body = {
      filters: filters,
      page: 1,
      pageSize: 24,
      sort: "-created_at",
    };
    _proxyPost("/api/query/assetGrid", body)
      .then((resp) => {
        if (resp.status === 404 || resp.status === 501) {
          state.assets = [];
          _renderGrid();
          _banner("BTE endpoint /api/query/assetGrid not yet implemented (PRD §5.4 status: implementing). Grid will populate once endpoint ships.", "warn");
          return;
        }
        if (!resp.ok) {
          _log(`assetGrid ← ${resp.status}`);
          return;
        }
        const json = _safeJson(resp.bodyText) || { items: [] };
        state.assets = json.items || [];
        _renderGrid();
        // Stop polling when no rendering asset remains.
        const stillInFlight = state.assets.some((a) => a.lifecycle === "generating" || a.lifecycle === "evaluating");
        if (!stillInFlight && state.pollTimer) {
          clearInterval(state.pollTimer);
          state.pollTimer = null;
          _log("polling stopped — all renders complete");
        }
      })
      .catch((e) => _log(`assetGrid × ${e.message}`));
  }

  function _startPolling() {
    if (state.pollTimer) clearInterval(state.pollTimer);
    _refreshGrid();
    state.pollTimer = setInterval(_refreshGrid, POLL_INTERVAL_MS);
  }

  function _renderGrid() {
    const grid = document.getElementById("svrntyBteGrid");
    const empty = document.getElementById("svrntyBteEmpty");
    if (!grid || !empty) return;
    if (!state.assets.length) {
      grid.innerHTML = "";
      empty.style.display = "";
      return;
    }
    empty.style.display = "none";
    grid.innerHTML = state.assets.map((a) => {
      const thumb = a.thumbUrl
        ? `<img src="${PROXY_BASE}${encodeURIComponent(a.thumbUrl)}" alt="">`
        : '<span>no thumb</span>';
      const score = (a.meanScore != null) ? ` · ★${a.meanScore.toFixed(1)}` : "";
      const sel = (a.id === state.selected) ? " svrnty-bte-card-selected" : "";
      return (
        `<div class="svrnty-bte-card${sel}" data-id="${_esc(a.id)}">` +
          `<div class="svrnty-bte-card-thumb">${thumb}</div>` +
          `<div class="svrnty-bte-card-meta">` +
            `<span class="svrnty-bte-status svrnty-bte-status-${_esc(a.lifecycle || "generating")}">${_esc(a.lifecycle || "—")}</span>` +
            `<span>${a.ratingCount || 0}r${score}</span>` +
          `</div>` +
        `</div>`
      );
    }).join("");
    grid.querySelectorAll(".svrnty-bte-card").forEach((card) => {
      card.addEventListener("click", () => _selectAsset(card.dataset.id));
    });
  }

  function _selectAsset(id) {
    state.selected = id;
    const asset = state.assets.find((a) => a.id === id);
    _renderGrid();
    _renderDetail(asset);
  }

  function _renderDetail(asset) {
    const host = document.getElementById("svrntyBteDetail");
    if (!host) return;
    if (!asset) { host.innerHTML = ""; return; }
    const thumb = asset.thumbUrl
      ? `<img src="${PROXY_BASE}${encodeURIComponent(asset.thumbUrl)}" alt="">`
      : "no preview";
    host.innerHTML =
      '<div class="svrnty-bte-detail">' +
        `<div class="svrnty-bte-detail-preview">${thumb}</div>` +
        '<dl class="svrnty-bte-detail-meta">' +
          `<dt>asset id</dt><dd>${_esc(asset.id)}</dd>` +
          `<dt>recipe</dt><dd>${_esc(asset.recipeSlug || "—")} v${asset.recipeVersion || "?"}</dd>` +
          `<dt>lifecycle</dt><dd>${_esc(asset.lifecycle || "—")}</dd>` +
          `<dt>ratings</dt><dd>${asset.ratingCount || 0} · mean ${asset.meanScore != null ? asset.meanScore.toFixed(2) : "—"}</dd>` +
          '<dt>rate</dt><dd>' +
            '<div class="svrnty-bte-rate-row">' +
              `<button class="svrnty-bte-rate-btn svrnty-bte-rate-btn-up" data-v="1" data-id="${_esc(asset.id)}" type="button">+1</button>` +
              `<button class="svrnty-bte-rate-btn svrnty-bte-rate-btn-down" data-v="-1" data-id="${_esc(asset.id)}" type="button">−1</button>` +
              '<select class="svrnty-bte-select" id="svrntyBteScore">' +
                '<option value="">— score —</option>' +
                '<option value="1">1</option><option value="2">2</option><option value="3">3</option><option value="4">4</option><option value="5">5</option>' +
              '</select>' +
            '</div>' +
            `<textarea class="svrnty-bte-comment" id="svrntyBteComment" placeholder="Comment (optional) — e.g. 'too plastic', 'needs warmer light'"></textarea>` +
          '</dd>' +
        '</dl>' +
      '</div>';
    host.querySelectorAll(".svrnty-bte-rate-btn").forEach((btn) => {
      btn.addEventListener("click", () => _rateAsset(btn.dataset.id, parseInt(btn.dataset.v, 10)));
    });
  }

  function _rateAsset(id, verdict) {
    const scoreSel = document.getElementById("svrntyBteScore");
    const commentEl = document.getElementById("svrntyBteComment");
    const body = {
      assetId: id,
      verdict: verdict > 0 ? "accept" : "reject",
      score: scoreSel && scoreSel.value ? parseInt(scoreSel.value, 10) : null,
      comment: commentEl ? (commentEl.value || "").trim() : "",
      ratedBy: localStorage.getItem("svrnty-bte.rater") || "jp",
    };
    _log(`POST rateAsset ${id} ${body.verdict}`);
    _proxyPost("/api/command/rateAsset", body)
      .then((resp) => {
        if (resp.status === 404 || resp.status === 501) {
          _banner("BTE /api/command/rateAsset not yet implemented (PRD §7).", "warn");
          return;
        }
        if (!resp.ok) {
          _log(`rateAsset ← ${resp.status}`);
          return;
        }
        _log(`rateAsset ← ok`);
        _refreshGrid();
      })
      .catch((e) => _log(`rateAsset × ${e.message}`));
  }

  // ── CMO chat handoff ─────────────────────────────────────────────────────
  function _openCmoChat() {
    // Honest minimum: surface the WebUI chat panel (whichever profile is
    // active). Full CMO-scoped iframe / component reuse is COMMAND-CENTER-PRD
    // §6.5 Phase E — not v1 of this panel.
    _closeOverlay();
    if (typeof window.switchPanel === "function") {
      try { window.switchPanel("chat", { fromRailClick: true }); } catch (_) { /* ignore */ }
    }
  }

  // ── Proxy helpers ────────────────────────────────────────────────────────
  function _proxyPost(btePath, body) {
    return fetch(PROXY_BASE + encodeURIComponent(btePath), {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify(body),
    }).then(_responseEnvelope);
  }

  function _responseEnvelope(r) {
    return r.text().then((t) => ({ ok: r.ok, status: r.status, bodyText: t }));
  }

  function _safeJson(s) {
    try { return JSON.parse(s); } catch (_) { return null; }
  }

  // ── UI utils ─────────────────────────────────────────────────────────────
  function _banner(text, kind) {
    const host = document.getElementById("svrntyBteBanner");
    if (!host) return;
    host.innerHTML = `<div class="svrnty-bte-banner svrnty-bte-banner-${kind === "warn" ? "warn" : "info"}">${_esc(text)}</div>`;
  }
  function _log(line) {
    state.log.unshift(`${new Date().toLocaleTimeString()} ${line}`);
    state.log = state.log.slice(0, 50);
    const el = document.getElementById("svrntyBteRunLog");
    if (el) el.textContent = state.log.join("\n");
  }
  function _esc(s) {
    return String(s == null ? "" : s).replace(/[<>&"]/g, (c) =>
      ({ "<": "&lt;", ">": "&gt;", "&": "&amp;", '"': "&quot;" }[c]));
  }

  // ── Boot ─────────────────────────────────────────────────────────────────
  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", _init);
  } else {
    _init();
  }
})();