const pptxgen = require("pptxgenjs");
const fs = require("fs");
const path = require("path");

function outerShadow() {
  return { type: "outer", color: "000000", opacity: 0.10, blur: 3, angle: 45, distance: 2 };
}

function addTopBar(slide, colors, title) {
  slide.addShape("rect", { x: 0, y: 0, w: 13.333, h: 7.5, fill: { color: colors.bg } });
  slide.addShape("rect", { x: 0, y: 0, w: 0.25, h: 7.5, fill: { color: colors.accent } });
  slide.addText(title || "", { x: 0.55, y: 0.35, w: 12.4, h: 0.5, fontFace: "Aptos Display", fontSize: 20, bold: true, color: colors.text });
  slide.addShape("line", { x: 0.55, y: 0.95, w: 12.4, h: 0, line: { color: "E5E7EB", width: 1 } });
}

function addNavButton(slide, x, y, w, h, text, toSlide, colors) {
  slide.addShape("roundRect", {
    x, y, w, h,
    fill: { color: "FFFFFF" },
    line: { color: "E5E7EB", width: 1 },
    radius: 0.18,
    shadow: outerShadow()
  });
  slide.addText(text, {
    x, y: y + 0.06, w, h,
    fontFace: "Aptos", fontSize: 14, bold: true,
    color: colors.text, align: "center", valign: "mid",
    hyperlink: { slide: toSlide, tooltip: "Aller à la section" }
  });
}

function addCard(slide, x, y, w, h, title, value, note, colors) {
  slide.addShape("roundRect", {
    x, y, w, h,
    fill: { color: "FFFFFF" },
    line: { color: "E5E7EB", width: 1 },
    radius: 0.22,
    shadow: outerShadow()
  });
  slide.addText(title, { x: x + 0.25, y: y + 0.18, w: w - 0.5, h: 0.3, fontFace: "Aptos", fontSize: 12, color: colors.muted });
  slide.addText(value, { x: x + 0.25, y: y + 0.5, w: w - 0.5, h: 0.55, fontFace: "Aptos Display", fontSize: 24, bold: true, color: colors.text });
  slide.addText(note || "", { x: x + 0.25, y: y + 1.1, w: w - 0.5, h: 0.3, fontFace: "Aptos", fontSize: 12, color: colors.accent });
}

function addSwotBox(slide, x, y, w, h, label, items, headerColor, colors) {
  slide.addShape("roundRect", {
    x, y, w, h,
    fill: { color: "FFFFFF" },
    line: { color: "E5E7EB", width: 1 },
    radius: 0.18,
    shadow: outerShadow()
  });
  slide.addShape("roundRect", { x, y, w, h: 0.55, fill: { color: headerColor }, line: { color: headerColor }, radius: 0.18 });
  slide.addText(label, { x: x + 0.25, y: y + 0.12, w: w - 0.5, h: 0.35, fontFace: "Aptos", fontSize: 14, bold: true, color: "FFFFFF" });

  const body = (items && items.length ? items : ["(à compléter)"])
    .slice(0, 8)
    .map(t => `• ${t}`)
    .join("\n");

  slide.addText(body, { x: x + 0.25, y: y + 0.75, w: w - 0.5, h: h - 0.9, fontFace: "Aptos", fontSize: 12, color: colors.text, valign: "top" });
}

async function buildPpt(data, outFile) {
  const pptx = new pptxgen();
  pptx.layout = "LAYOUT_WIDE";
  pptx.theme = { headFontFace: "Aptos Display", bodyFontFace: "Aptos", lang: "fr-FR" };

  const colors = data.brand || {
    accent: "2563EB", bg: "F8FAFC", text: "111827", muted: "6B7280",
    strength: "16A34A", weakness: "DC2626", opportunity: "2563EB", threat: "F59E0B"
  };

  // 1) Cover
  let s = pptx.addSlide();
  s.addShape("rect", { x: 0, y: 0, w: 13.333, h: 7.5, fill: { color: colors.bg } });
  s.addShape("rect", { x: 0, y: 0, w: 0.38, h: 7.5, fill: { color: colors.accent } });
  s.addText(data.meta?.title || "Analyse SWOT", { x: 0.9, y: 2.3, w: 12.0, h: 0.8, fontFace: "Aptos Display", fontSize: 38, bold: true, color: colors.text });
  s.addText(data.meta?.subtitle || "Deck éditable + génération automatique", { x: 0.9, y: 3.2, w: 12.0, h: 0.5, fontFace: "Aptos", fontSize: 16, color: colors.muted });
  s.addShape("roundRect", { x: 0.9, y: 4.1, w: 6.6, h: 1.2, fill: { color: "FFFFFF" }, line: { color: "E5E7EB", width: 1 }, radius: 0.22, shadow: outerShadow() });
  s.addText(`${data.meta?.company || "Nom de l’organisation"}\n${data.meta?.date || ""}`, { x: 1.15, y: 4.25, w: 6.1, h: 0.9, fontFace: "Aptos", fontSize: 14, color: colors.text });

  // 2) Menu
  s = pptx.addSlide();
  addTopBar(s, colors, "Menu (boutons cliquables)");
  s.addText("Automatisation visible : navigation + graphiques qui se mettent à jour via 'Modifier les données'.", { x: 0.55, y: 1.15, w: 12.3, h: 0.6, fontFace: "Aptos", fontSize: 12, color: colors.muted });
  addNavButton(s, 0.8, 2.1, 3.0, 0.8, "Matrice SWOT", 3, colors);
  addNavButton(s, 4.0, 2.1, 3.0, 0.8, "KPI & Graphiques", 4, colors);
  addNavButton(s, 7.2, 2.1, 3.0, 0.8, "Stratégies TOWS", 5, colors);
  addNavButton(s, 10.4, 2.1, 2.6, 0.8, "Roadmap", 6, colors);

  // 3) SWOT
  s = pptx.addSlide();
  addTopBar(s, colors, "Matrice SWOT (Top 8)");
  s.addText("Chaque bloc est une zone de texte éditable.", { x: 0.55, y: 1.15, w: 12.4, h: 0.4, fontFace: "Aptos", fontSize: 12, color: colors.muted });

  const bx = 0.7, by = 1.7, bw = 6.1, bh = 2.55, gap = 0.35;
  addSwotBox(s, bx, by, bw, bh, "FORCES", data.swot?.Forces, colors.strength, colors);
  addSwotBox(s, bx + bw + gap, by, bw, bh, "FAIBLESSES", data.swot?.Faiblesses, colors.weakness, colors);
  addSwotBox(s, bx, by + bh + gap, bw, bh, "OPPORTUNITÉS", data.swot?.Opportunités, colors.opportunity, colors);
  addSwotBox(s, bx + bw + gap, by + bh + gap, bw, bh, "MENACES", data.swot?.Menaces, colors.threat, colors);
  s.addText("⬅ Menu", { x: 11.6, y: 0.35, w: 1.7, h: 0.4, fontFace: "Aptos", fontSize: 12, color: colors.accent, hyperlink: { slide: 2 } });

  // 4) KPI + chart
  s = pptx.addSlide();
  addTopBar(s, colors, "KPI & Graphiques (auto)");
  s.addText("Clic droit sur le graphique → Modifier les données (mise à jour automatique).", { x: 0.55, y: 1.15, w: 12.4, h: 0.4, fontFace: "Aptos", fontSize: 12, color: colors.muted });

  const kx = 0.7, ky = 1.65, cw = 3.05, ch = 1.55, cg = 0.25;
  (data.kpi || []).slice(0, 4).forEach((k, i) => addCard(s, kx + i * (cw + cg), ky, cw, ch, k.label, k.value, k.note, colors));

  const labels = data.chart?.labels || ["Forces", "Faiblesses", "Opportunités", "Menaces"];
  const vals = data.chart?.values || [60, 40, 55, 50];

  s.addChart(pptx.ChartType.bar, [{ name: "Score", labels, values: vals }], {
    x: 0.7, y: 3.45, w: 12.6, h: 3.7,
    chartColors: [colors.accent],
    dataLabelPosition: "outEnd",
    showLegend: false,
    valAxisLabelFontSize: 10,
    catAxisLabelFontSize: 10
  });

  s.addText("⬅ Menu", { x: 11.6, y: 0.35, w: 1.7, h: 0.4, fontFace: "Aptos", fontSize: 12, color: colors.accent, hyperlink: { slide: 2 } });

  // 5) TOWS
  s = pptx.addSlide();
  addTopBar(s, colors, "Stratégies TOWS");
  s.addText("Zones éditables. Dupliquez une ligne pour créer plusieurs stratégies.", { x: 0.55, y: 1.15, w: 12.4, h: 0.4, fontFace: "Aptos", fontSize: 12, color: colors.muted });

  const rows = [
    ["SO", "Forces × Opportunités", data.tows?.SO, colors.strength],
    ["ST", "Forces × Menaces", data.tows?.ST, colors.threat],
    ["WO", "Faiblesses × Opportunités", data.tows?.WO, colors.opportunity],
    ["WT", "Faiblesses × Menaces", data.tows?.WT, colors.weakness],
  ];

  const tx = 0.7, tw = 12.6, th = 1.35, tgap = 0.25;
  rows.forEach((r, idx) => {
    const y = 1.75 + idx * (th + tgap);
    s.addShape("roundRect", { x: tx, y, w: tw, h: th, fill: { color: "FFFFFF" }, line: { color: "E5E7EB", width: 1 }, radius: 0.18 });
    s.addShape("roundRect", { x: tx, y, w: 0.9, h: th, fill: { color: r[3] }, line: { color: r[3] }, radius: 0.18 });
    s.addText(r[0], { x: tx, y: y + 0.35, w: 0.9, h: 0.6, fontFace: "Aptos Display", fontSize: 18, bold: true, color: "FFFFFF", align: "center" });
    s.addText(r[1], { x: tx + 1.1, y: y + 0.15, w: tw - 1.2, h: 0.35, fontFace: "Aptos", fontSize: 12, bold: true, color: colors.text });
    s.addText(r[2] || "(à compléter)", { x: tx + 1.1, y: y + 0.55, w: tw - 1.2, h: 0.75, fontFace: "Aptos", fontSize: 12, color: colors.text, valign: "top" });
  });

  s.addText("⬅ Menu", { x: 11.6, y: 0.35, w: 1.7, h: 0.4, fontFace: "Aptos", fontSize: 12, color: colors.accent, hyperlink: { slide: 2 } });

  // 6) Roadmap
  s = pptx.addSlide();
  addTopBar(s, colors, "Roadmap");
  s.addText("Colonnes éditables (dupliquez selon vos horizons).", { x: 0.55, y: 1.15, w: 12.4, h: 0.4, fontFace: "Aptos", fontSize: 12, color: colors.muted });

  const phases = (data.roadmap || []).slice(0, 3);
  const rx = 0.7, ry = 1.7, rw = 12.6, colGap = 0.35;
  const colW = (rw - colGap * (phases.length - 1)) / phases.length;

  phases.forEach((p, i) => {
    const x = rx + i * (colW + colGap);
    s.addShape("roundRect", { x, y: ry, w: colW, h: 5.45, fill: { color: "FFFFFF" }, line: { color: "E5E7EB", width: 1 }, radius: 0.18, shadow: outerShadow() });
    s.addShape("roundRect", { x, y: ry, w: colW, h: 0.6, fill: { color: colors.accent }, line: { color: colors.accent }, radius: 0.18 });
    s.addText(p.phase, { x: x + 0.2, y: ry + 0.15, w: colW - 0.4, h: 0.35, fontFace: "Aptos", fontSize: 14, bold: true, color: "FFFFFF" });
    const body = (p.items || []).map(t => `• ${t}`).join("\n");
    s.addText(body || "(à compléter)", { x: x + 0.25, y: ry + 0.85, w: colW - 0.5, h: 4.45, fontFace: "Aptos", fontSize: 12, color: colors.text, valign: "top" });
  });

  s.addText("⬅ Menu", { x: 11.6, y: 0.35, w: 1.7, h: 0.4, fontFace: "Aptos", fontSize: 12, color: colors.accent, hyperlink: { slide: 2 } });

  // Footer
  pptx._slides.forEach((sl, idx) => {
    sl.addText(`${idx + 1} / ${pptx._slides.length}`, { x: 12.2, y: 7.1, w: 1.0, h: 0.3, fontFace: "Aptos", fontSize: 10, color: colors.muted, align: "right" });
  });

  await pptx.writeFile({ fileName: outFile });
}

async function main() {
  const argv = process.argv.slice(2);
  const jsonFile = argv[0] || path.join(__dirname, "swot_case.json");
  const outFile = argv[1] || path.join(__dirname, "Deck_SWOT.pptx");

  if (!fs.existsSync(jsonFile)) {
    console.error("JSON introuvable :", jsonFile);
    process.exit(1);
  }
  const data = JSON.parse(fs.readFileSync(jsonFile, "utf-8"));
  await buildPpt(data, outFile);
  console.log("OK ->", outFile);
}

main().catch(e => { console.error(e); process.exit(1); });