// Adapter — converts /api/state into the mockup's window.PALETTE_DATA shape.
// The v2 stages were written against a static seed; we keep the same shape
// but populate from live backend data so all the mockup screens just work.

const V2_TIER_MAP = {
  literal:'LITERAL', sensory:'SENSORY', emotion:'EMOTION',
  universal:'UNIVERSAL', metaphor:'METAPHOR',
};

const v2NormalizeKind = (kindOrName) => {
  const k = (kindOrName||'').toLowerCase();
  if (k.includes('mp4') || k.includes('mov') || k.includes('webm') || k === 'video') return 'video';
  if (k.includes('mp3') || k.includes('wav') || k.includes('m4a') || k === 'audio') return 'audio';
  if (k.includes('jpg') || k.includes('jpeg') || k.includes('png') || k.includes('webp') || k === 'image') return 'image';
  if (k.includes('pptx') || k === 'ppt') return 'ppt';
  if (k.includes('pdf')) return 'pdf';
  if (k === 'doc' || k.includes('docx')) return 'doc';
  if (k.startsWith('http')) return 'url';
  return 'doc';
};

// Build PALETTE_DATA for one project. Pulls files from project.folders, merges
// in analyses from /api/state. The "blocks" array is page/scene-level.
const v2BuildPaletteData = (state, projectId) => {
  const project = (state.projects||[]).find(p => p.id === projectId);
  if (!project) return null;
  const analyses = state.analyses || {};

  const files = [];
  for (const folder of project.folders || []) {
    for (const f of folder.files || []) {
      const ana = analyses[f.id];
      const kind = v2NormalizeKind(f.kind || f.name || '');
      files.push({
        id: f.id,
        kind,
        name: f.name,
        size: f.size,
        pages: f.blocks ?? f.pages,
        duration: f.duration,
        status: f.status === 'analyzed' ? 'analyzed'
              : f.status === 'analyzing' ? 'analyzing'
              : f.status === 'idle' ? 'not_analyzed'
              : f.status || 'pending',
        progress: f.progress || (f.status === 'analyzed' ? 1 : 0),
        folder: folder.name,
        updated: f.date || '',
        ref_origin: f.ref_origin,
        ref_url: f.ref_url,
        analysis: ana || null,
      });
    }
  }

  // Build blocks from analyses[file.id].blocks
  const blocks = [];
  for (const f of files) {
    const ana = analyses[f.id];
    if (!ana) continue;
    const blockList = ana.blocks || [];
    if (!blockList.length && ana.summary) {
      // Single-block fallback (legacy flat analyses)
      blocks.push({
        id: `${f.id}_b0`, file: f.id, index: 1, kind: 'page',
        title: ana.summary.split(/[——.·]/)[0].slice(0,60) || f.name,
        excerpt: ana.summary,
        summary: ana.summary,
        summaryEditedBy: 'ai',
        keywords: (ana.keywords || []).map((k,i) => v2KeywordToMockup(k, `${f.id}_b0_k${i}`)),
      });
      continue;
    }
    blockList.forEach((b, i) => {
      const blockId = b.id || `${f.id}_b${i}`;
      const blockKeywords = (b.keywords || []).map((k,j) => v2KeywordToMockup(k, `${blockId}_k${j}`, blockId, f.id));
      blocks.push({
        id: blockId,
        file: f.id,
        index: i + 1,
        kind: f.kind === 'video' ? 'scene' : 'page',
        timecode: b.timecode || (f.kind === 'video' && b.scenes && b.scenes[0]?.timecode),
        title: b.title || `${f.kind === 'video' ? 'Scene' : 'p.'}${i+1}`,
        excerpt: (b.summary || '').slice(0, 240),
        summary: b.summary || '',
        summaryEditedBy: 'ai',
        keywords: blockKeywords,
      });
    });
  }

  // pinned/watching keep their backend ids; if missing fall back to first 6 metaphor-tier keywords
  const board = (state.boards || {})[projectId] || {pinned: [], watching: []};
  const pinned = (board.pinned || []).map(p => p._id || p.id || `${p.w}|${p.ko}`);
  const watching = (board.watching || []).map(p => p._id || p.id || `${p.w}|${p.ko}`);

  return {
    project: { id: project.id, name: project.name, code: project.client || '', status: 'live', brief: project.brief || '' },
    files,
    blocks,
    pinned,
    watching,
    distilled: (state.distilled || {})[projectId] || [],
    references: (state.references || {})[projectId] || {saved: [], last_results: []},
  };
};

const V2_TIER_FROM_KW = (k) => {
  if (k.tier) return (V2_TIER_MAP[k.tier] || k.tier).toUpperCase();
  if (k.type) return String(k.type).toUpperCase();
  return 'LITERAL';
};

const v2KeywordToMockup = (k, id, blockId, fileId) => ({
  id,
  type: V2_TIER_FROM_KW(k),
  en: k.w || k.en || '',
  ko: k.ko || '',
  gloss: k.why || k.gloss || '',
  heat: k.heat,
  block_id: k.block_id || blockId,
  blockId: k.block_id || blockId,   // mockup-style camelCase used by mini-chat
  fileId: fileId,                    // critical: backend mutate needs this
  raw: k,  // keep original for backend calls
});

window.v2BuildPaletteData = v2BuildPaletteData;
window.v2NormalizeKind = v2NormalizeKind;