const pptxgen = require("pptxgenjs");
const { execSync } = require("child_process");

// ── Fetch all images ──────────────────────────────────────────────────────────
const urls = [
  "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_39fd2c06d07d8a35e399e887d6b117e45796d7c548ae79cb50e227f8d1f107c6.jpg",  // 0: scleral tunnel VR diagram
  "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_e786ca87c47a91e47c81ca4905dfe83e85ef1ea39135e082775fec07d450f248.jpg",  // 1: frown incision crescent blade
  "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_217dfc19f8ad0dff37f579527bb2599ad43535590fa51c05efe7abbc4256e480.jpg",  // 2: nucleus delivery
  "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_ef37296fbd9b17f557d1fcb0cb3dfd3422da9c96bbf03b5af62361ebef8017ee.jpg",  // 3: fish-hook nucleus
  "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_d869b7a97961e9261fecaf818ef925efb95a6228836b24d3ba5615693fc5dcac.jpg",  // 4: bipolar diathermy conjunctiva
  "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_86899785e985375b9e09010dabc3717f7e737921b06d9bb77e54fb7f3f00a6db.jpg",  // 5: haemostasis general vs modified
  "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_b814788b80435b88497e1f8d3cfa94f633c8239e386da3dc4d4910b1a87e87cf.jpg",  // 6: exposed sclera pre-haemostasis
];

const raw = execSync(
  `node /home/daytona/skills/shared/scripts/fetch_images.js ${urls.map(u => `"${u}"`).join(" ")}`
).toString();
const imgs = JSON.parse(raw);

// ── Colour palette ────────────────────────────────────────────────────────────
// Deep navy dominant, teal accent, white text, amber highlight
const C = {
  navy:    "0D1B2A",
  navyMid: "1A2E42",
  teal:    "1E8A8A",
  tealLt:  "2ABFBF",
  amber:   "E8A030",
  white:   "FFFFFF",
  offWhite:"E8EDF2",
  muted:   "8FA8BF",
};

// ── Helper: slide header bar ──────────────────────────────────────────────────
function addHeader(slide, title, stepLabel) {
  // Full-width navy background
  slide.addShape("rect", { x: 0, y: 0, w: 10, h: 1.05, fill: { color: C.navy }, line: { color: C.navy } });
  // Teal left accent stripe
  slide.addShape("rect", { x: 0, y: 0, w: 0.08, h: 1.05, fill: { color: C.teal }, line: { color: C.teal } });
  if (stepLabel) {
    slide.addText(stepLabel, {
      x: 0.18, y: 0.08, w: 1.4, h: 0.38,
      fontSize: 9, bold: true, color: C.amber, fontFace: "Calibri", margin: 0,
    });
  }
  slide.addText(title, {
    x: 0.18, y: stepLabel ? 0.42 : 0.22, w: 9.6, h: 0.55,
    fontSize: stepLabel ? 20 : 24, bold: true, color: C.white, fontFace: "Calibri", margin: 0,
  });
}

// ── Helper: footer ────────────────────────────────────────────────────────────
function addFooter(slide, text) {
  slide.addShape("rect", { x: 0, y: 5.32, w: 10, h: 0.3, fill: { color: C.navyMid }, line: { color: C.navyMid } });
  slide.addText(text, {
    x: 0.2, y: 5.33, w: 9.6, h: 0.25,
    fontSize: 7.5, color: C.muted, fontFace: "Calibri", margin: 0,
  });
}

// ── Helper: info card (dark rounded rect) ─────────────────────────────────────
function addCard(slide, x, y, w, h, color) {
  slide.addShape("roundRect", {
    x, y, w, h,
    fill: { color: color || C.navyMid },
    line: { color: C.teal, pt: 1 },
    rectRadius: 0.08,
  });
}

// ── Helper: step number badge ─────────────────────────────────────────────────
function addBadge(slide, num, x, y) {
  slide.addShape("ellipse", { x, y, w: 0.42, h: 0.42, fill: { color: C.teal }, line: { color: C.teal } });
  slide.addText(String(num), {
    x, y, w: 0.42, h: 0.42,
    fontSize: 14, bold: true, color: C.white, fontFace: "Calibri",
    align: "center", valign: "middle", margin: 0,
  });
}

// ─────────────────────────────────────────────────────────────────────────────
let pres = new pptxgen();
pres.layout = "LAYOUT_16x9";
pres.title = "Manual Small-Incision Cataract Surgery (MSICS)";
pres.author = "Orris Medical";

// ══════════════════════════════════════════════════════════════════
// SLIDE 1 — Title slide
// ══════════════════════════════════════════════════════════════════
{
  const s = pres.addSlide();
  s.addShape("rect", { x: 0, y: 0, w: 10, h: 5.625, fill: { color: C.navy }, line: { color: C.navy } });
  s.addShape("rect", { x: 0, y: 0, w: 0.12, h: 5.625, fill: { color: C.teal }, line: { color: C.teal } });
  s.addShape("rect", { x: 0, y: 4.5, w: 10, h: 1.125, fill: { color: C.navyMid }, line: { color: C.navyMid } });

  s.addText("Manual Small-Incision", {
    x: 0.5, y: 1.0, w: 9, h: 0.9,
    fontSize: 38, bold: true, color: C.white, fontFace: "Calibri",
    align: "center", charSpacing: 1,
  });
  s.addText("Cataract Surgery", {
    x: 0.5, y: 1.85, w: 9, h: 0.9,
    fontSize: 38, bold: true, color: C.tealLt, fontFace: "Calibri",
    align: "center", charSpacing: 1,
  });
  s.addText("(MSICS)", {
    x: 0.5, y: 2.65, w: 9, h: 0.5,
    fontSize: 22, color: C.amber, fontFace: "Calibri", align: "center", bold: false,
  });
  s.addText("Step-by-Step Surgical Technique", {
    x: 0.5, y: 3.2, w: 9, h: 0.4,
    fontSize: 14, color: C.offWhite, fontFace: "Calibri", align: "center", italic: true,
  });
  s.addText("Source: Kanski's Clinical Ophthalmology, 10th ed.", {
    x: 0.5, y: 4.6, w: 9, h: 0.25,
    fontSize: 9, color: C.muted, fontFace: "Calibri", align: "center",
  });
}

// ══════════════════════════════════════════════════════════════════
// SLIDE 2 — What is MSICS?
// ══════════════════════════════════════════════════════════════════
{
  const s = pres.addSlide();
  s.addShape("rect", { x: 0, y: 0, w: 10, h: 5.625, fill: { color: C.navy }, line: { color: C.navy } });
  addHeader(s, "What is MSICS?");

  const points = [
    ["Variant of ECCE", "Manual small-incision cataract surgery is a refined form of extracapsular cataract extraction (ECCE)."],
    ["Self-sealing tunnel", "Creates a 6–7 mm sclero-corneal tunnel — no sutures typically needed."],
    ["High-volume settings", "Designed for resource-limited environments; faster and cheaper than phacoemulsification."],
    ["Ideal for dense cataracts", "Particularly suited for mature, brunescent, and white cataracts."],
    ["Comparable outcomes", "Visual rehabilitation equivalent to phacoemulsification."],
  ];

  points.forEach(([title, body], i) => {
    const y = 1.2 + i * 0.82;
    addBadge(s, i + 1, 0.2, y + 0.06);
    addCard(s, 0.72, y, 9.1, 0.68);
    s.addText(title, { x: 0.85, y: y + 0.04, w: 2.2, h: 0.28, fontSize: 11, bold: true, color: C.amber, fontFace: "Calibri", margin: 0 });
    s.addText(body, { x: 0.85, y: y + 0.3, w: 8.7, h: 0.32, fontSize: 10, color: C.offWhite, fontFace: "Calibri", margin: 0 });
  });

  addFooter(s, "Kanski's Clinical Ophthalmology, 10th ed.");
}

// ══════════════════════════════════════════════════════════════════
// SLIDE 3 — Steps overview (flow)
// ══════════════════════════════════════════════════════════════════
{
  const s = pres.addSlide();
  s.addShape("rect", { x: 0, y: 0, w: 10, h: 5.625, fill: { color: C.navy }, line: { color: C.navy } });
  addHeader(s, "Surgical Steps — Overview");

  const steps = [
    "Patient Prep & Anaesthesia",
    "Conjunctival Flap",
    "Haemostasis",
    "Scleral Groove",
    "Tunnel Dissection",
    "Capsulotomy",
    "Hydrodissection",
    "Nucleus Expression",
    "Cortical Aspiration",
    "IOL Implantation",
    "Wound Closure",
  ];

  // Two columns
  const col1 = steps.slice(0, 6);
  const col2 = steps.slice(6);

  col1.forEach((step, i) => {
    const y = 1.18 + i * 0.68;
    addBadge(s, i + 1, 0.18, y);
    s.addText(step, { x: 0.68, y: y + 0.04, w: 4.3, h: 0.35, fontSize: 11.5, color: C.offWhite, fontFace: "Calibri", bold: i === 2, margin: 0 });
    if (i === 2) {
      s.addShape("rect", { x: 0.68, y: y + 0.39, w: 4.3, h: 0.02, fill: { color: C.teal }, line: { color: C.teal } });
    }
  });

  col2.forEach((step, i) => {
    const y = 1.18 + i * 0.68;
    addBadge(s, i + 7, 5.2, y);
    s.addText(step, { x: 5.7, y: y + 0.04, w: 4.1, h: 0.35, fontSize: 11.5, color: C.offWhite, fontFace: "Calibri", margin: 0 });
  });

  // Vertical divider
  s.addShape("rect", { x: 4.98, y: 1.15, w: 0.04, h: 4.1, fill: { color: C.teal }, line: { color: C.teal } });

  addFooter(s, "Step 3 (Haemostasis) is expanded in detail in subsequent slides.");
}

// ══════════════════════════════════════════════════════════════════
// SLIDE 4 — Steps 1 & 2: Prep + Conjunctival Flap
// ══════════════════════════════════════════════════════════════════
{
  const s = pres.addSlide();
  s.addShape("rect", { x: 0, y: 0, w: 10, h: 5.625, fill: { color: C.navy }, line: { color: C.navy } });
  addHeader(s, "Patient Preparation & Conjunctival Flap", "STEPS 1–2");

  // Step 1 card
  addCard(s, 0.2, 1.2, 4.55, 3.9);
  addBadge(s, 1, 0.28, 1.28);
  s.addText("Patient Preparation & Anaesthesia", { x: 0.78, y: 1.28, w: 3.8, h: 0.38, fontSize: 12, bold: true, color: C.amber, fontFace: "Calibri", margin: 0 });
  s.addText([
    { text: "• Topical, peribulbar, or sub-Tenon's anaesthesia", options: { breakLine: true } },
    { text: "• Lid speculum inserted; eye cleaned and draped", options: { breakLine: true } },
    { text: "• Pupil fully dilated with mydriatic drops", options: { breakLine: true } },
    { text: "• Informed consent; biometry completed pre-op", options: { breakLine: true } },
    { text: "• Penicillin allergy status; antibiotic drops started", options: {} },
  ], { x: 0.35, y: 1.75, w: 4.2, h: 2.6, fontSize: 10.5, color: C.offWhite, fontFace: "Calibri" });

  // Step 2 card
  addCard(s, 5.1, 1.2, 4.65, 3.9);
  addBadge(s, 2, 5.18, 1.28);
  s.addText("Conjunctival Flap", { x: 5.68, y: 1.28, w: 3.9, h: 0.38, fontSize: 12, bold: true, color: C.amber, fontFace: "Calibri", margin: 0 });
  s.addText([
    { text: "• Fornix-based conjunctival flap raised superiorly", options: { breakLine: true } },
    { text: "• Tenon's capsule dissected to expose bare sclera", options: { breakLine: true } },
    { text: "• Bridle suture (4-0 silk) placed through superior rectus for globe control", options: { breakLine: true } },
    { text: "• Exposes the limbal zone for scleral incision", options: { breakLine: true } },
    { text: "• Haemostasis achieved with wet-field cautery (Step 3)", options: {} },
  ], { x: 5.25, y: 1.75, w: 4.3, h: 2.6, fontSize: 10.5, color: C.offWhite, fontFace: "Calibri" });

  addFooter(s, "Kanski's Clinical Ophthalmology, 10th ed.");
}

// ══════════════════════════════════════════════════════════════════
// SLIDE 5 — Step 3: Haemostasis (with images)
// ══════════════════════════════════════════════════════════════════
{
  const s = pres.addSlide();
  s.addShape("rect", { x: 0, y: 0, w: 10, h: 5.625, fill: { color: C.navy }, line: { color: C.navy } });
  addHeader(s, "Haemostasis", "STEP 3");

  // Left: text
  addCard(s, 0.2, 1.15, 3.95, 4.15);
  s.addText([
    { text: "Wet-field bipolar cautery applied to episcleral vessels after conjunctival flap is raised.", options: { breakLine: true } },
    { text: " ", options: { breakLine: true } },
    { text: "Why it matters:", options: { bold: true, color: C.amber, breakLine: true } },
    { text: "• Bleeding into AC during nucleus expression → expulsive haemorrhage risk", options: { breakLine: true } },
    { text: "• Blood-stained field reduces visibility for subsequent steps", options: { breakLine: true } },
    { text: " ", options: { breakLine: true } },
    { text: "Methods:", options: { bold: true, color: C.amber, breakLine: true } },
    { text: "• Wet-field (bipolar) cautery — primary tool", options: { breakLine: true } },
    { text: "• Prophylactic thermal cautery to scleral bed", options: { breakLine: true } },
    { text: "• Adrenaline-soaked sponge (vasoconstriction)", options: { breakLine: true } },
    { text: "• Direct pressure with dry sponge", options: {} },
  ], { x: 0.32, y: 1.25, w: 3.65, h: 3.9, fontSize: 9.5, color: C.offWhite, fontFace: "Calibri" });

  // Centre: bipolar cautery image
  if (!imgs[4].error) {
    s.addImage({ data: imgs[4].base64, x: 4.28, y: 1.18, w: 2.55, h: 2.0 });
    s.addText("Bipolar diathermy forceps\ncoagulating conjunctival vessels", {
      x: 4.28, y: 3.22, w: 2.55, h: 0.45, fontSize: 7.5, color: C.muted, fontFace: "Calibri", align: "center",
    });
  }

  // Right: general vs modified haemostasis
  if (!imgs[5].error) {
    s.addImage({ data: imgs[5].base64, x: 6.98, y: 1.18, w: 2.82, h: 3.7 });
    s.addText("General vs. modified procedure:\nprophylactic cautery reduces intraoperative bleeding", {
      x: 6.98, y: 4.92, w: 2.82, h: 0.45, fontSize: 7.5, color: C.muted, fontFace: "Calibri", align: "center",
    });
  }

  addFooter(s, "Adequate haemostasis before the scleral groove is mandatory for a clear surgical field.");
}

// ══════════════════════════════════════════════════════════════════
// SLIDE 6 — Step 3b: Pre-haemostasis field (exposed sclera)
// ══════════════════════════════════════════════════════════════════
{
  const s = pres.addSlide();
  s.addShape("rect", { x: 0, y: 0, w: 10, h: 5.625, fill: { color: C.navy }, line: { color: C.navy } });
  addHeader(s, "Exposed Sclera — Before Haemostasis", "STEP 3 — CLINICAL VIEW");

  if (!imgs[6].error) {
    s.addImage({ data: imgs[6].base64, x: 0.3, y: 1.2, w: 5.5, h: 3.85 });
  }

  addCard(s, 6.0, 1.2, 3.75, 3.85);
  s.addText("What this image shows:", { x: 6.15, y: 1.3, w: 3.45, h: 0.35, fontSize: 11, bold: true, color: C.amber, fontFace: "Calibri", margin: 0 });
  s.addText([
    { text: "• Conjunctival flap reflected, bare sclera exposed", options: { breakLine: true } },
    { text: "• Perilimbal vascularity clearly visible", options: { breakLine: true } },
    { text: "• Focal bleeding points present — cautery not yet applied", options: { breakLine: true } },
    { text: "• Toothed forceps stabilising the globe", options: { breakLine: true } },
    { text: "• Mature white cataract visible through dilated pupil", options: { breakLine: true } },
    { text: " ", options: { breakLine: true } },
    { text: "Key point:", options: { bold: true, color: C.tealLt, breakLine: true } },
    { text: "Cautery must be applied NOW — before the scleral groove is made — to achieve a dry, clear field for tunnel dissection.", options: {} },
  ], { x: 6.15, y: 1.72, w: 3.45, h: 3.1, fontSize: 9.5, color: C.offWhite, fontFace: "Calibri" });

  addFooter(s, "Intraoperative photo — exposed bare sclera with perilimbal bleeding points before cautery.");
}

// ══════════════════════════════════════════════════════════════════
// SLIDE 7 — Steps 4–5: Scleral Groove + Tunnel
// ══════════════════════════════════════════════════════════════════
{
  const s = pres.addSlide();
  s.addShape("rect", { x: 0, y: 0, w: 10, h: 5.625, fill: { color: C.navy }, line: { color: C.navy } });
  addHeader(s, "Scleral Groove & Tunnel Dissection", "STEPS 4–5");

  // Image: frown incision
  if (!imgs[1].error) {
    s.addImage({ data: imgs[1].base64, x: 0.2, y: 1.18, w: 4.6, h: 3.5 });
    s.addText("Frown incision: crescent blade creating sclerocorneal tunnel;\nTrypan Blue highlights tunnel path", {
      x: 0.2, y: 4.72, w: 4.6, h: 0.45, fontSize: 7.5, color: C.muted, fontFace: "Calibri", align: "center",
    });
  }

  // Right: text
  addCard(s, 5.0, 1.18, 4.8, 2.0);
  addBadge(s, 4, 5.08, 1.26);
  s.addText("Scleral Groove", { x: 5.6, y: 1.26, w: 4.0, h: 0.35, fontSize: 11.5, bold: true, color: C.amber, fontFace: "Calibri", margin: 0 });
  s.addText([
    { text: "• Partial-thickness (~300 µm) frown or straight groove", options: { breakLine: true } },
    { text: "• 6–7 mm wide, 1–2 mm behind limbus", options: { breakLine: true } },
    { text: "• Made with a #15 blade or crescent knife", options: {} },
  ], { x: 5.15, y: 1.65, w: 4.5, h: 1.35, fontSize: 10, color: C.offWhite, fontFace: "Calibri" });

  addCard(s, 5.0, 3.3, 4.8, 2.0);
  addBadge(s, 5, 5.08, 3.38);
  s.addText("Tunnel Dissection", { x: 5.6, y: 3.38, w: 4.0, h: 0.35, fontSize: 11.5, bold: true, color: C.amber, fontFace: "Calibri", margin: 0 });
  s.addText([
    { text: "• Crescent blade dissects lamellar tunnel forward into clear cornea", options: { breakLine: true } },
    { text: "• Uniform depth essential — too shallow risks button-hole; too deep risks perforation", options: { breakLine: true } },
    { text: "• Keratome enters anterior chamber through internal lip", options: {} },
  ], { x: 5.15, y: 3.77, w: 4.5, h: 1.35, fontSize: 10, color: C.offWhite, fontFace: "Calibri" });

  addFooter(s, "The self-sealing architecture of the tunnel is the key innovation of MSICS over conventional ECCE.");
}

// ══════════════════════════════════════════════════════════════════
// SLIDE 8 — Steps 6 & 7: Capsulorhexis + Hydrodissection (VR image)
// ══════════════════════════════════════════════════════════════════
{
  const s = pres.addSlide();
  s.addShape("rect", { x: 0, y: 0, w: 10, h: 5.625, fill: { color: C.navy }, line: { color: C.navy } });
  addHeader(s, "Capsulotomy & Hydrodissection", "STEPS 6–7");

  // VR simulator image (tunnel creation)
  if (!imgs[0].error) {
    s.addImage({ data: imgs[0].base64, x: 0.2, y: 1.18, w: 4.6, h: 2.9 });
    s.addText("Keratome entry into anterior chamber (VR simulator view):\nA — tunnel dissection; B — AC entry with keratome", {
      x: 0.2, y: 4.12, w: 4.6, h: 0.45, fontSize: 7.5, color: C.muted, fontFace: "Calibri", align: "center",
    });
  }

  addCard(s, 5.0, 1.18, 4.8, 2.05);
  addBadge(s, 6, 5.08, 1.26);
  s.addText("Anterior Capsulotomy (CCC)", { x: 5.6, y: 1.26, w: 4.0, h: 0.35, fontSize: 11.5, bold: true, color: C.amber, fontFace: "Calibri", margin: 0 });
  s.addText([
    { text: "• Trypan blue 0.06% stains anterior capsule", options: { breakLine: true } },
    { text: "• OVD fills AC to maintain depth", options: { breakLine: true } },
    { text: "• Continuous curvilinear capsulorhexis (CCC) with needle or forceps", options: { breakLine: true } },
    { text: "• Critical step — tear must be controlled and circular", options: {} },
  ], { x: 5.15, y: 1.65, w: 4.5, h: 1.42, fontSize: 10, color: C.offWhite, fontFace: "Calibri" });

  addCard(s, 5.0, 3.35, 4.8, 1.95);
  addBadge(s, 7, 5.08, 3.43);
  s.addText("Hydrodissection", { x: 5.6, y: 3.43, w: 4.0, h: 0.35, fontSize: 11.5, bold: true, color: C.amber, fontFace: "Calibri", margin: 0 });
  s.addText([
    { text: "• BSS injected under anterior capsule", options: { breakLine: true } },
    { text: "• Frees nucleus from cortical attachments", options: { breakLine: true } },
    { text: "• Hydrodelineation separates nucleus from epinucleus", options: { breakLine: true } },
    { text: "• Allows free rotation and nucleus delivery", options: {} },
  ], { x: 5.15, y: 3.82, w: 4.5, h: 1.35, fontSize: 10, color: C.offWhite, fontFace: "Calibri" });

  addFooter(s, "Kanski's Clinical Ophthalmology, 10th ed.");
}

// ══════════════════════════════════════════════════════════════════
// SLIDE 9 — Step 8: Nucleus Expression (with photos)
// ══════════════════════════════════════════════════════════════════
{
  const s = pres.addSlide();
  s.addShape("rect", { x: 0, y: 0, w: 10, h: 5.625, fill: { color: C.navy }, line: { color: C.navy } });
  addHeader(s, "Nucleus Prolapse & Expression", "STEP 8");

  // Two images side by side
  if (!imgs[3].error) {
    s.addImage({ data: imgs[3].base64, x: 0.2, y: 1.18, w: 3.1, h: 2.8 });
    s.addText("Fish-hook technique:\nnucleus engaged and\ndelivered through tunnel", {
      x: 0.2, y: 4.02, w: 3.1, h: 0.55, fontSize: 7.5, color: C.muted, fontFace: "Calibri", align: "center",
    });
  }

  if (!imgs[2].error) {
    s.addImage({ data: imgs[2].base64, x: 3.5, y: 1.18, w: 3.1, h: 2.8 });
    s.addText("Dense brunescent nucleus\nbeing delivered through\nsclerocorneal tunnel", {
      x: 3.5, y: 4.02, w: 3.1, h: 0.55, fontSize: 7.5, color: C.muted, fontFace: "Calibri", align: "center",
    });
  }

  addCard(s, 6.75, 1.18, 3.05, 3.95);
  s.addText([
    { text: "Nucleus prolapsed into anterior chamber using Sinskey hook or lens dialer.", options: { breakLine: true } },
    { text: " ", options: { breakLine: true } },
    { text: "Techniques:", options: { bold: true, color: C.amber, breakLine: true } },
    { text: "• Wire vectis beneath nucleus", options: { breakLine: true } },
    { text: "• Irrigating vectis", options: { breakLine: true } },
    { text: "• Fish-hook needle", options: { breakLine: true } },
    { text: "• Sandwich/tumbling technique", options: { breakLine: true } },
    { text: " ", options: { breakLine: true } },
    { text: "OVD protects the corneal endothelium throughout.", options: { italic: true, color: C.tealLt } },
  ], { x: 6.88, y: 1.3, w: 2.72, h: 3.65, fontSize: 9.5, color: C.offWhite, fontFace: "Calibri" });

  addFooter(s, "OVD = ophthalmic viscosurgical device. Endothelial protection is critical during nucleus delivery.");
}

// ══════════════════════════════════════════════════════════════════
// SLIDE 10 — Steps 9–11: Cortex Aspiration, IOL, Closure
// ══════════════════════════════════════════════════════════════════
{
  const s = pres.addSlide();
  s.addShape("rect", { x: 0, y: 0, w: 10, h: 5.625, fill: { color: C.navy }, line: { color: C.navy } });
  addHeader(s, "Cortical Aspiration · IOL Implantation · Wound Closure", "STEPS 9–11");

  const cards = [
    {
      n: 9, title: "Cortical Aspiration",
      body: [
        "Simcoe (two-way irrigation-aspiration) cannula",
        "Cortex removed from capsular bag",
        "Thorough removal prevents posterior capsule opacification (PCO)",
        "AC depth maintained with irrigation throughout",
      ],
    },
    {
      n: 10, title: "IOL Implantation",
      body: [
        "Capsular bag refilled with OVD",
        "PMMA rigid IOL implanted (no folding needed for 6–7 mm tunnel)",
        "Foldable IOLs can also be used",
        "Haptics positioned in capsular bag",
      ],
    },
    {
      n: 11, title: "OVD Removal & Wound Closure",
      body: [
        "OVD thoroughly aspirated from AC",
        "AC reformed with balanced salt solution (BSS)",
        "Self-sealing tunnel — sutures usually not required",
        "10-0 nylon suture placed if wound not watertight",
        "Conjunctival flap repositioned with cautery or suture",
      ],
    },
  ];

  cards.forEach((c, i) => {
    const x = 0.18 + i * 3.28;
    addCard(s, x, 1.15, 3.1, 4.2);
    addBadge(s, c.n, x + 0.08, 1.23);
    s.addText(c.title, { x: x + 0.6, y: 1.23, w: 2.35, h: 0.38, fontSize: 11, bold: true, color: C.amber, fontFace: "Calibri", margin: 0 });
    s.addText(c.body.map(b => `• ${b}`).join("\n"), {
      x: x + 0.12, y: 1.7, w: 2.85, h: 3.42,
      fontSize: 9.5, color: C.offWhite, fontFace: "Calibri",
    });
  });

  addFooter(s, "Postoperatively: subconjunctival antibiotic/steroid injection, eye pad and shield applied.");
}

// ══════════════════════════════════════════════════════════════════
// SLIDE 11 — Comparison Table: ECCE vs MSICS vs Phaco
// ══════════════════════════════════════════════════════════════════
{
  const s = pres.addSlide();
  s.addShape("rect", { x: 0, y: 0, w: 10, h: 5.625, fill: { color: C.navy }, line: { color: C.navy } });
  addHeader(s, "MSICS vs. ECCE vs. Phacoemulsification");

  const rows = [
    ["Feature", "ECCE", "MSICS", "Phaco"],
    ["Incision size", "8–10 mm", "6–7 mm", "2–3 mm"],
    ["Self-sealing", "No", "Yes", "Yes"],
    ["Sutures", "Required", "Usually none", "None"],
    ["Nucleus handling", "Expression", "Manual via tunnel", "Ultrasonic"],
    ["Equipment cost", "Low", "Low", "High"],
    ["Astigmatism induced", "High", "Low–moderate", "Minimal"],
    ["Dense cataracts", "Suitable", "Ideal", "Challenging"],
    ["Visual outcomes", "Good", "Comparable to phaco", "Best"],
  ];

  const colWidths = [2.8, 2.2, 2.5, 2.2];
  const colX = [0.18, 3.08, 5.38, 7.98];
  const rowH = 0.44;
  const startY = 1.12;

  rows.forEach((row, ri) => {
    row.forEach((cell, ci) => {
      const y = startY + ri * rowH;
      const isHeader = ri === 0;
      const isMSICS = ci === 2;
      const fillColor = isHeader ? C.teal : isMSICS ? C.navyMid : C.navy;
      const borderColor = isHeader ? C.teal : C.teal;
      s.addShape("rect", {
        x: colX[ci], y, w: colWidths[ci] - 0.04, h: rowH - 0.02,
        fill: { color: fillColor },
        line: { color: borderColor, pt: 0.5 },
      });
      s.addText(cell, {
        x: colX[ci] + 0.08, y: y + 0.04, w: colWidths[ci] - 0.2, h: rowH - 0.1,
        fontSize: isHeader ? 10.5 : 9.5,
        bold: isHeader || (ci === 0),
        color: isHeader ? C.white : isMSICS ? C.amber : (ci === 0 ? C.muted : C.offWhite),
        fontFace: "Calibri",
        valign: "middle", margin: 0,
      });
    });
  });

  addFooter(s, "MSICS is the preferred technique in high-volume settings for dense cataracts. — Kanski's Clinical Ophthalmology, 10th ed.");
}

// ══════════════════════════════════════════════════════════════════
// SLIDE 12 — Key Points / Summary
// ══════════════════════════════════════════════════════════════════
{
  const s = pres.addSlide();
  s.addShape("rect", { x: 0, y: 0, w: 10, h: 5.625, fill: { color: C.navy }, line: { color: C.navy } });
  addHeader(s, "Key Takeaways");

  const pts = [
    ["Self-sealing incision", "The 6–7 mm sclero-corneal tunnel architecture makes sutures unnecessary in most cases."],
    ["Haemostasis is critical", "Wet-field bipolar cautery before the scleral groove prevents a blood-stained field and expulsive haemorrhage risk."],
    ["OVD throughout", "Ophthalmic viscosurgical devices protect the corneal endothelium at every step from capsulotomy to IOL loading."],
    ["Dense cataract workhorse", "MSICS handles brunescent and white cataracts where phacoemulsification poses higher risk."],
    ["High-volume, low-cost", "No ultrasound machine needed — affordable, fast, and scalable for eye camps in low-resource settings."],
    ["Outcomes comparable to phaco", "Visual rehabilitation with MSICS equals phacoemulsification with significantly lower equipment cost."],
  ];

  pts.forEach(([title, body], i) => {
    const y = 1.18 + i * 0.7;
    s.addShape("rect", { x: 0.18, y: y + 0.04, w: 0.04, h: 0.45, fill: { color: C.teal }, line: { color: C.teal } });
    s.addText(title + ":  ", { x: 0.32, y, w: 2.4, h: 0.55, fontSize: 10.5, bold: true, color: C.amber, fontFace: "Calibri", valign: "middle", margin: 0 });
    s.addText(body, { x: 2.72, y, w: 7.1, h: 0.55, fontSize: 10, color: C.offWhite, fontFace: "Calibri", valign: "middle", margin: 0 });
  });

  addFooter(s, "Source: Kanski's Clinical Ophthalmology, 10th ed. | Images: PMC Clinical VQA Dataset");
}

// ── Write file ────────────────────────────────────────────────────────────────
pres.writeFile({ fileName: "/home/daytona/workspace/msics-ppt/MSICS_Surgery.pptx" })
  .then(() => console.log("Done: MSICS_Surgery.pptx"))
  .catch(e => { console.error(e); process.exit(1); });

const pptxgen = require("pptxgenjs");
const { execSync } = require("child_process");

// ── Fetch images ─────────────────────────────────────────────────────────────
const urls = [
  "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_2a3c9bfc869a71e4c8274b3aa9926cb23e22d723d597d5feb1c7b0f749422781.jpg", // 0: keratome + side port instrument
  "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_2a8915c4d1aae26de535e4dcceac00ae82e7269e26e6c60cf49c3f0bb25af2d3.jpg", // 1: bent cannula through side port
  "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_340cfa24942acd21d70352337071719094c91f6f651a48bd57b5d14d2434d704.jpg", // 2: FLACS planning showing side ports
];
const raw = execSync(
  `node /home/daytona/skills/shared/scripts/fetch_images.js ${urls.map(u => `"${u}"`).join(" ")}`
).toString();
const imgs = JSON.parse(raw);

// ── Colour palette (same as main deck) ───────────────────────────────────────
const C = {
  navy:    "0D1B2A",
  navyMid: "1A2E42",
  teal:    "1E8A8A",
  tealLt:  "2ABFBF",
  amber:   "E8A030",
  white:   "FFFFFF",
  offWhite:"E8EDF2",
  muted:   "8FA8BF",
};

function addHeader(slide, title, stepLabel) {
  slide.addShape("rect", { x:0, y:0, w:10, h:1.05, fill:{color:C.navy}, line:{color:C.navy} });
  slide.addShape("rect", { x:0, y:0, w:0.08, h:1.05, fill:{color:C.teal}, line:{color:C.teal} });
  if (stepLabel) {
    slide.addText(stepLabel, { x:0.18, y:0.08, w:2, h:0.38, fontSize:9, bold:true, color:C.amber, fontFace:"Calibri", margin:0 });
  }
  slide.addText(title, {
    x:0.18, y: stepLabel ? 0.42 : 0.22, w:9.6, h:0.55,
    fontSize: stepLabel ? 20 : 24, bold:true, color:C.white, fontFace:"Calibri", margin:0,
  });
}

function addFooter(slide, text) {
  slide.addShape("rect", { x:0, y:5.32, w:10, h:0.3, fill:{color:C.navyMid}, line:{color:C.navyMid} });
  slide.addText(text, { x:0.2, y:5.33, w:9.6, h:0.25, fontSize:7.5, color:C.muted, fontFace:"Calibri", margin:0 });
}

function addCard(slide, x, y, w, h, color) {
  slide.addShape("roundRect", {
    x, y, w, h,
    fill:{ color: color || C.navyMid },
    line:{ color:C.teal, pt:1 },
    rectRadius:0.08,
  });
}

function addBadge(slide, label, x, y, color) {
  slide.addShape("ellipse", { x, y, w:0.42, h:0.42, fill:{color: color||C.teal}, line:{color: color||C.teal} });
  slide.addText(String(label), {
    x, y, w:0.42, h:0.42, fontSize:12, bold:true, color:C.white,
    fontFace:"Calibri", align:"center", valign:"middle", margin:0,
  });
}

// ── Load existing PPTX ────────────────────────────────────────────────────────
// pptxgenjs cannot edit existing files — we rebuild from scratch using the same
// script logic, then append the new slide at the correct position (after slide 4,
// before the current slide 5 on haemostasis).
// Strategy: read build.js, re-run it to produce a fresh base deck, then inject
// the new slide via a second pass. Since pptxgenjs only supports append, we
// instead re-run build.js with the new slide injected inline.

// ── Standalone: just produce a single slide PPTX to merge ────────────────────
let pres = new pptxgen();
pres.layout = "LAYOUT_16x9";
pres.title  = "Side Port Entry — MSICS";

// ════════════════════════════════════════════════════════════════════
// SLIDE A — Side Port Entry: What & Where
// ════════════════════════════════════════════════════════════════════
{
  const s = pres.addSlide();
  s.addShape("rect", { x:0, y:0, w:10, h:5.625, fill:{color:C.navy}, line:{color:C.navy} });
  addHeader(s, "Side Port Entry — Overview", "STEP 2b  |  MSICS & PHACOEMULSIFICATION");

  // Left column: definition + position
  addCard(s, 0.18, 1.12, 4.7, 4.18);
  s.addText("What is a side port?", {
    x:0.32, y:1.2, w:4.3, h:0.38,
    fontSize:12, bold:true, color:C.amber, fontFace:"Calibri", margin:0,
  });
  s.addText([
    { text: "A small accessory corneal stab incision (1.0–1.2 mm) made separately from the main wound. Also called a paracentesis.", options: { breakLine:true } },
    { text: " ", options: { breakLine:true } },
    { text: "Location:", options: { bold:true, color:C.tealLt, breakLine:true } },
    { text: "• ~60° to the LEFT of the main incision (right-handed surgeons)", options: { breakLine:true } },
    { text: "• Placed in clear cornea at the limbus", options: { breakLine:true } },
    { text: "• Some surgeons use TWO side ports ~180° apart", options: { breakLine:true } },
    { text: " ", options: { breakLine:true } },
    { text: "Instrument:", options: { bold:true, color:C.tealLt, breakLine:true } },
    { text: "• 15° MVR (micro-vitreoretinal) blade, or dedicated side-port keratome", options: { breakLine:true } },
    { text: " ", options: { breakLine:true } },
    { text: "Self-sealing — valve tunnel architecture closes without suture once instrument is removed.", options: { italic:true, color:C.muted } },
  ], { x:0.32, y:1.65, w:4.42, h:3.5, fontSize:10, color:C.offWhite, fontFace:"Calibri" });

  // Right column: uses
  addCard(s, 5.08, 1.12, 4.72, 4.18);
  s.addText("Uses of the side port", {
    x:5.22, y:1.2, w:4.3, h:0.38,
    fontSize:12, bold:true, color:C.amber, fontFace:"Calibri", margin:0,
  });
  const uses = [
    ["Second instrument", "Chopper / manipulator / Sinskey hook for nucleus management"],
    ["OVD injection",     "Viscoelastic cannula fills AC before capsulorhexis and IOL loading"],
    ["Bimanual I&A",      "Irrigation cannula enters here; aspiration through main port"],
    ["AC maintainer",     "In MSICS: keeps IOP stable during nucleus delivery"],
    ["Iris manipulation", "Stretch or reposition pupil if needed"],
    ["Pressure relief",   "Rapid AC decompression if IOP spikes intraoperatively"],
  ];
  uses.forEach(([title, body], i) => {
    const y = 1.65 + i * 0.57;
    addBadge(s, i+1, 5.15, y + 0.05, C.teal);
    s.addText(title, { x:5.65, y: y+0.04, w:1.8, h:0.24, fontSize:9.5, bold:true, color:C.tealLt, fontFace:"Calibri", margin:0 });
    s.addText(body,  { x:5.65, y: y+0.27, w:3.95, h:0.26, fontSize:9,   color:C.offWhite,         fontFace:"Calibri", margin:0 });
  });

  addFooter(s, "Kanski's Clinical Ophthalmology, 10th ed.");
}

// ════════════════════════════════════════════════════════════════════
// SLIDE B — Side Port Entry: Step-by-Step Technique
// ════════════════════════════════════════════════════════════════════
{
  const s = pres.addSlide();
  s.addShape("rect", { x:0, y:0, w:10, h:5.625, fill:{color:C.navy}, line:{color:C.navy} });
  addHeader(s, "Side Port Entry — Technique", "STEP-BY-STEP");

  // Steps (left + centre column)
  const steps = [
    ["1", "Globe stabilisation",    "Fix eye with fixation forceps or toothed forceps on conjunctiva. Bridle suture already in place."],
    ["2", "Blade selection",        "15° MVR blade (1.0–1.2 mm width). Some surgeons use a 20-gauge or dedicated side-port keratome."],
    ["3", "Entry angle",            "Hold blade tangentially (~20° to corneal surface) to create a bevelled, stepped entry — key to self-sealing."],
    ["4", "Tunnel construction",    "Advance blade through anterior corneal stroma parallel to iris plane for 1.0–1.5 mm, then tilt and enter AC."],
    ["5", "Enter anterior chamber", "Blade tip passes through Descemet's membrane into AC. Gentle aqueous egress confirms correct placement."],
    ["6", "Withdraw blade",         "Remove smoothly — the stepped tunnel collapses and self-seals under IOP. No suture needed."],
    ["7", "Confirm patency",        "Insert OVD cannula or second instrument — ensure free passage without iris prolapse or wound leak."],
  ];

  steps.forEach(([num, title, body], i) => {
    const y = 1.15 + i * 0.615;
    addBadge(s, num, 0.18, y + 0.05);
    s.addText(title, { x:0.7,  y: y+0.04, w:2.35, h:0.28, fontSize:10.5, bold:true, color:C.amber,    fontFace:"Calibri", margin:0 });
    s.addText(body,  { x:3.12, y: y+0.04, w:6.7,  h:0.5,  fontSize:9.5,             color:C.offWhite, fontFace:"Calibri", margin:0 });
    // divider line
    if (i < steps.length - 1) {
      s.addShape("rect", { x:0.18, y: y+0.59, w:9.65, h:0.01, fill:{color:C.teal}, line:{color:C.teal} });
    }
  });

  addFooter(s, "The self-sealing stepped tunnel is the critical design principle — correct angulation prevents iris prolapse and leaks.");
}

// ════════════════════════════════════════════════════════════════════
// SLIDE C — Side Port Entry: Clinical Photos
// ════════════════════════════════════════════════════════════════════
{
  const s = pres.addSlide();
  s.addShape("rect", { x:0, y:0, w:10, h:5.625, fill:{color:C.navy}, line:{color:C.navy} });
  addHeader(s, "Side Port Entry — Intraoperative Views");

  // Image 0: keratome + side port instrument (main incision with side port already in)
  if (!imgs[0].error) {
    s.addImage({ data:imgs[0].base64, x:0.18, y:1.15, w:3.0, h:2.45 });
    s.addText("Main keratome incision being made;\nirrigation instrument already\nplaced through side port (right)", {
      x:0.18, y:3.63, w:3.0, h:0.6, fontSize:8, color:C.muted, fontFace:"Calibri", align:"center",
    });
  }

  // Image 1: bent cannula through side port
  if (!imgs[1].error) {
    s.addImage({ data:imgs[1].base64, x:3.48, y:1.15, w:3.0, h:2.45 });
    s.addText("27-gauge bent cannula inserted\nthrough side port for cortical\nhydro-dispersion", {
      x:3.48, y:3.63, w:3.0, h:0.6, fontSize:8, color:C.muted, fontFace:"Calibri", align:"center",
    });
  }

  // Image 2: FLACS planning (side port positions marked)
  if (!imgs[2].error) {
    s.addImage({ data:imgs[2].base64, x:6.68, y:1.15, w:3.12, h:2.45 });
    s.addText("FLACS planning view: main port\n(~210°) and two side ports\n(~95° and ~275°) marked", {
      x:6.68, y:3.63, w:3.12, h:0.6, fontSize:8, color:C.muted, fontFace:"Calibri", align:"center",
    });
  }

  // Key points strip
  addCard(s, 0.18, 4.3, 9.65, 0.9, C.navyMid);
  s.addText([
    { text: "Key points:  ", options:{ bold:true, color:C.amber } },
    { text: "Self-sealing (no suture)  •  ", options:{ color:C.offWhite } },
    { text: "1.0–1.2 mm width  •  ", options:{ color:C.offWhite } },
    { text: "~60° from main incision  •  ", options:{ color:C.offWhite } },
    { text: "15° MVR blade at low angle  •  ", options:{ color:C.offWhite } },
    { text: "Bevelled stepped tunnel prevents iris prolapse", options:{ color:C.offWhite } },
  ], { x:0.32, y:4.42, w:9.35, h:0.65, fontSize:10, fontFace:"Calibri", valign:"middle", margin:0 });

  addFooter(s, "Kanski's Clinical Ophthalmology, 10th ed. | Images: PMC Clinical VQA Dataset");
}

pres.writeFile({ fileName:"/home/daytona/workspace/msics-ppt/SidePort_Slides.pptx" })
  .then(() => console.log("Done: SidePort_Slides.pptx"))
  .catch(e => { console.error(e); process.exit(1); });

"""
Merge SidePort_Slides.pptx into MSICS_Surgery.pptx after slide index 3 (slide 4).
Output: MSICS_Surgery_Full.pptx
"""
import copy
from pptx import Presentation
from pptx.util import Pt
from lxml import etree

def merge_pptx(base_path, insert_path, after_index, output_path):
    base = Presentation(base_path)
    insert = Presentation(insert_path)

    # We'll rebuild slide order by copying XML elements
    # pptx slide list is base.slides._sldIdLst
    base_sldIdLst = base.slides._sldIdLst

    inserted_ids = []
    for slide in insert.slides:
        # Clone slide XML
        slide_xml = copy.deepcopy(slide._element)

        # Add a new blank slide to base, then replace its XML
        new_slide = base.slides.add_slide(base.slide_layouts[6])  # blank layout
        # Copy XML content
        new_slide._element.getparent().replace(new_slide._element, slide_xml)
        # We need to re-register the slide relationship
        # Actually add_slide appends — track the new slide id
        inserted_ids.append(base.slides._sldIdLst[-1])

    # Now reorder: move inserted slides from end to position after_index+1
    # Current order: [0..11 original] [12,13,14 inserted]
    # Target:        [0..3] [inserted 3] [4..11 original]

    all_ids = list(base_sldIdLst)
    n_orig = len(all_ids) - len(inserted_ids)
    orig_ids = all_ids[:n_orig]
    new_ids  = all_ids[n_orig:]

    reordered = orig_ids[:after_index+1] + new_ids + orig_ids[after_index+1:]

    # Clear and repopulate sldIdLst
    for el in list(base_sldIdLst):
        base_sldIdLst.remove(el)
    for el in reordered:
        base_sldIdLst.append(el)

    base.save(output_path)
    print(f"Saved: {output_path}  ({len(reordered)} slides)")

merge_pptx(
    "/home/daytona/workspace/msics-ppt/MSICS_Surgery.pptx",
    "/home/daytona/workspace/msics-ppt/SidePort_Slides.pptx",
    after_index=3,   # insert after slide 4 (0-indexed: 3)
    output_path="/home/daytona/workspace/msics-ppt/MSICS_Surgery_Full.pptx"
)

"""
Low-level PPTX merge: insert slides from SidePort_Slides.pptx into MSICS_Surgery.pptx
after slide 4 (index 3), by directly manipulating the zip contents.
"""
import zipfile, shutil, os, re, copy
from lxml import etree

BASE   = "/home/daytona/workspace/msics-ppt/MSICS_Surgery.pptx"
INSERT = "/home/daytona/workspace/msics-ppt/SidePort_Slides.pptx"
OUTPUT = "/home/daytona/workspace/msics-ppt/MSICS_Surgery_Full.pptx"
AFTER  = 4   # insert after slide number 4 (1-indexed)

NSMAP = {
    'p':   'http://schemas.openxmlformats.org/presentationml/2006/main',
    'r':   'http://schemas.openxmlformats.org/officeDocument/2006/relationships',
    'a':   'http://schemas.openxmlformats.org/drawingml/2006/main',
}
REL_SLIDE = 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/slide'

def read_zip(path):
    zf = zipfile.ZipFile(path, 'r')
    contents = {name: zf.read(name) for name in zf.namelist()}
    zf.close()
    return contents

def write_zip(path, contents):
    with zipfile.ZipFile(path, 'w', zipfile.ZIP_DEFLATED) as zf:
        for name, data in contents.items():
            zf.writestr(name, data)

def get_slide_rels(contents, slide_num):
    """Return list of (rId, target, type) for a slide."""
    rel_path = f"ppt/slides/_rels/slide{slide_num}.xml.rels"
    if rel_path not in contents:
        return []
    root = etree.fromstring(contents[rel_path])
    rels = []
    for r in root:
        rels.append((r.get('Id'), r.get('Target'), r.get('Type')))
    return rels

def get_presentation_slide_order(contents):
    """Return list of slide filenames in presentation order."""
    prs_rels = etree.fromstring(contents['ppt/_rels/presentation.xml.rels'])
    prs_xml  = etree.fromstring(contents['ppt/presentation.xml'])
    # Build rId -> target map
    rid_to_target = {}
    for r in prs_rels:
        if r.get('Type', '').endswith('/slide'):
            rid_to_target[r.get('Id')] = r.get('Target')
    # Get ordered list from sldIdLst
    sldIdLst = prs_xml.find('.//{%s}sldIdLst' % NSMAP['p'])
    order = []
    for sldId in sldIdLst:
        rid = sldId.get('{%s}id' % NSMAP['r'])
        if rid in rid_to_target:
            target = rid_to_target[rid]
            # target is like '../slides/slide1.xml' or 'slides/slide1.xml'
            fname = target.replace('../', 'ppt/')
            order.append(fname)
    return order

# ── Read both zips ────────────────────────────────────────────────────────────
base_contents   = read_zip(BASE)
insert_contents = read_zip(INSERT)

# ── Find next free slide number in base ──────────────────────────────────────
existing_slides = [k for k in base_contents if re.match(r'ppt/slides/slide\d+\.xml$', k)]
max_slide_num   = max(int(re.search(r'slide(\d+)', s).group(1)) for s in existing_slides)

# ── Find slides in insert file ────────────────────────────────────────────────
insert_slides = sorted(
    [k for k in insert_contents if re.match(r'ppt/slides/slide\d+\.xml$', k)],
    key=lambda x: int(re.search(r'slide(\d+)', x).group(1))
)
print(f"Base slides: {len(existing_slides)}, Insert slides: {len(insert_slides)}")

# ── Copy insert slide files + their rels + media into base contents ───────────
num_map = {}   # old insert slide num -> new slide num in base
for i, slide_path in enumerate(insert_slides):
    old_num = int(re.search(r'slide(\d+)', slide_path).group(1))
    new_num = max_slide_num + 1 + i
    num_map[old_num] = new_num

    # Copy slide XML
    new_slide_path = f'ppt/slides/slide{new_num}.xml'
    base_contents[new_slide_path] = insert_contents[slide_path]

    # Copy slide rels XML (renaming media references)
    old_rel_path = f'ppt/slides/_rels/slide{old_num}.xml.rels'
    new_rel_path = f'ppt/slides/_rels/slide{new_num}.xml.rels'
    if old_rel_path in insert_contents:
        base_contents[new_rel_path] = insert_contents[old_rel_path]

    print(f"  slide{old_num} -> slide{new_num}")

# ── Copy media from insert into base ─────────────────────────────────────────
for name, data in insert_contents.items():
    if name.startswith('ppt/media/'):
        if name not in base_contents:
            base_contents[name] = data

# ── Update presentation.xml and its rels to include new slides ───────────────
prs_rels_root = etree.fromstring(base_contents['ppt/_rels/presentation.xml.rels'])
prs_xml_root  = etree.fromstring(base_contents['ppt/presentation.xml'])

# Find max rId in presentation rels
existing_rids = [int(r.get('Id','r0').replace('rId','')) for r in prs_rels_root if r.get('Id','').startswith('rId')]
max_rid = max(existing_rids) if existing_rids else 0

# Find max sldId in sldIdLst
sldIdLst = prs_xml_root.find('.//{%s}sldIdLst' % NSMAP['p'])
existing_sldids = [int(s.get('id', 256)) for s in sldIdLst]
max_sldid = max(existing_sldids) if existing_sldids else 255

# Get current ordered slide rIds from sldIdLst (to know which rId = which position)
prs_rels_map = {}  # target -> rId
for r in prs_rels_root:
    if r.get('Type','').endswith('/slide'):
        t = r.get('Target','').replace('../slides/', 'ppt/slides/')
        prs_rels_map[t] = r.get('Id')

# Build new rIds and sldId elements for the inserted slides
new_slide_elements = []  # (new_num, new_rId, new_sldId_val)
for i, (old_num, new_num) in enumerate(num_map.items()):
    new_rid   = f'rId{max_rid + 1 + i}'
    new_sldid = max_sldid + 1 + i
    new_slide_elements.append((new_num, new_rid, new_sldid))

    # Add to rels
    rel_el = etree.SubElement(prs_rels_root, 'Relationship')
    rel_el.set('Id',     new_rid)
    rel_el.set('Type',   REL_SLIDE)
    rel_el.set('Target', f'../slides/slide{new_num}.xml')

# Current sldId list as ordered list of elements
current_sldid_els = list(sldIdLst)

# Build reordered list: insert new slides after position AFTER (1-indexed -> index AFTER)
insert_idx = AFTER  # insert after slide AFTER (0-indexed: AFTER)
# Find the rId for each existing slide by position
def find_rid_for_position(pos_0indexed):
    """pos_0indexed: 0-based index in current_sldid_els"""
    el = current_sldid_els[pos_0indexed]
    return el.get('{%s}id' % NSMAP['r'])

reordered_els = current_sldid_els[:insert_idx]

# New sldId elements to insert
ns_p = NSMAP['p']
ns_r = NSMAP['r']
for new_num, new_rid, new_sldid_val in new_slide_elements:
    el = etree.Element('{%s}sldId' % ns_p)
    el.set('id',  str(new_sldid_val))
    el.set('{%s}id' % ns_r, new_rid)
    reordered_els.append(el)

reordered_els += current_sldid_els[insert_idx:]

# Replace sldIdLst contents
for child in list(sldIdLst):
    sldIdLst.remove(child)
for el in reordered_els:
    sldIdLst.append(el)

# Save updated XMLs
base_contents['ppt/_rels/presentation.xml.rels'] = etree.tostring(prs_rels_root, xml_declaration=True, encoding='UTF-8', standalone=True)
base_contents['ppt/presentation.xml']            = etree.tostring(prs_xml_root,  xml_declaration=True, encoding='UTF-8', standalone=True)

# ── Write output ──────────────────────────────────────────────────────────────
write_zip(OUTPUT, base_contents)
print(f"\nDone! Total slides: {len(reordered_els)}")
print(f"Output: {OUTPUT}")