const pptxgen = require("pptxgenjs");

const pres = new pptxgen();
pres.layout = "LAYOUT_16x9"; // 10" x 5.625"
pres.title = "Can Heart Patients Do Yoga? The Truth.";

// ─── PALETTE ───────────────────────────────────────────────────
// Deep navy dominates; crimson red as myth accent; gold as truth accent;
// soft off-white for body text; teal for golden-rule slides
const C = {
  navy:       "0D1F3C",
  navyMid:    "162B52",
  crimson:    "C0392B",
  crimsonLt:  "E74C3C",
  gold:       "E8A800",
  goldLt:     "F5C518",
  teal:       "0E7C7B",
  tealLt:     "16A8A7",
  white:      "FFFFFF",
  offWhite:   "F0EDE8",
  lightGray:  "D8D8D8",
  midGray:    "8A8A8A",
  darkText:   "1A1A1A",
};

// ─── HELPERS ───────────────────────────────────────────────────
function addBackground(slide, color) {
  slide.addShape(pres.shapes.RECTANGLE, {
    x: 0, y: 0, w: 10, h: 5.625,
    fill: { color },
    line: { color, width: 0 },
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}

function addTopBar(slide, color, h = 0.08) {
  slide.addShape(pres.shapes.RECTANGLE, {
    x: 0, y: 0, w: 10, h,
    fill: { color },
    line: { color, width: 0 },
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}

function addBottomBar(slide, color, h = 0.06) {
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    x: 0, y: 5.565, w: 10, h,
    fill: { color },
    line: { color, width: 0 },
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}

function addSlideNumber(slide, num, total, textColor = C.midGray) {
  slide.addText(`${num} / ${total}`, {
    x: 8.8, y: 5.25, w: 1, h: 0.3,
    fontSize: 9, color: textColor,
    align: "right", fontFace: "Calibri",
  });
}

function addBrandTag(slide, color = C.midGray) {
  slide.addText("CARDIAC YOGA · MYTH BUSTER", {
    x: 0.3, y: 5.25, w: 4, h: 0.3,
    fontSize: 8.5, color, charSpacing: 2,
    fontFace: "Calibri", bold: true,
  });
}

// ─── SLIDE 1: COVER ────────────────────────────────────────────
(function buildCover() {
  const s = pres.addSlide();
  addBackground(s, C.navy);

  // Decorative left accent bar
  s.addShape(pres.shapes.RECTANGLE, {
    x: 0, y: 0, w: 0.45, h: 5.625,
    fill: { color: C.crimson },
    line: { color: C.crimson, width: 0 },
  });

  // Large decorative circle — soft top right
  s.addShape(pres.shapes.OVAL, {
    x: 7.2, y: -1.2, w: 3.5, h: 3.5,
    fill: { color: C.navyMid },
    line: { color: C.navyMid, width: 0 },
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  // Another circle bottom-left area (subtle)
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    x: -0.8, y: 3.8, w: 2.8, h: 2.8,
    fill: { color: C.navyMid },
    line: { color: C.navyMid, width: 0 },
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  // Tag line above title
  s.addText("MYTH-BUSTING CAROUSEL", {
    x: 0.7, y: 1.1, w: 8.5, h: 0.4,
    fontSize: 11, color: C.crimsonLt,
    bold: true, charSpacing: 3,
    fontFace: "Calibri",
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  // Main title
  s.addText("Can Heart Patients\nDo Yoga?", {
    x: 0.7, y: 1.55, w: 7.8, h: 1.9,
    fontSize: 44, color: C.white,
    bold: true, fontFace: "Calibri",
    lineSpacingMultiple: 1.1,
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  // Sub-title
  s.addText("The Truth.", {
    x: 0.7, y: 3.45, w: 5, h: 0.65,
    fontSize: 36, color: C.goldLt,
    bold: true, fontFace: "Calibri",
    italic: true,
  });

  // Swipe prompt
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    x: 0.7, y: 4.3, w: 7, h: 0.35,
    fontSize: 12, color: C.lightGray,
    fontFace: "Calibri",
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  addBottomBar(s, C.crimson);
  addSlideNumber(s, 1, 10, C.midGray);
})();

// ─── MYTH SLIDE BUILDER ────────────────────────────────────────
// Layout: dark navy bg | left panel = MYTH (crimson) | right panel = TRUTH (navy light)
function buildMythSlide(num, mythNum, mythText, truthText, clinicalNote, icon = "✗") {
  const s = pres.addSlide();
  addBackground(s, C.navy);

  // Left myth panel (40% width)
  s.addShape(pres.shapes.RECTANGLE, {
    x: 0, y: 0, w: 3.9, h: 5.625,
    fill: { color: C.crimson },
    line: { color: C.crimson, width: 0 },
  });

  // MYTH panel header
  s.addText(`MYTH #${mythNum}`, {
    x: 0.2, y: 0.25, w: 3.5, h: 0.4,
    fontSize: 11, color: C.offWhite,
    bold: true, charSpacing: 3,
    fontFace: "Calibri",
  });

  // Myth icon
  s.addText(icon, {
    x: 0.2, y: 0.7, w: 0.7, h: 0.7,
    fontSize: 30, color: C.white,
    bold: true, fontFace: "Segoe UI Emoji",
  });

  // Myth text
  s.addText(`"${mythText}"`, {
    x: 0.2, y: 1.35, w: 3.5, h: 2.5,
    fontSize: 18, color: C.white,
    bold: true, fontFace: "Calibri",
    italic: true,
    lineSpacingMultiple: 1.2,
    valign: "top",
    wrap: true,
  });

  // Myth label at bottom of left panel
  s.addText("COMMON BELIEF", {
    x: 0.2, y: 5.1, w: 3.5, h: 0.35,
    fontSize: 8, color: "FFFFFF",
    charSpacing: 2, fontFace: "Calibri",
  });

  // ── Right TRUTH panel ──
  // "CLINICAL TRUTH" label
  s.addText("CLINICAL TRUTH", {
    x: 4.15, y: 0.25, w: 5.6, h: 0.35,
    fontSize: 10.5, color: C.gold,
    bold: true, charSpacing: 3,
    fontFace: "Calibri",
  });

  // Divider line under label
  s.addShape(pres.shapes.RECTANGLE, {
    x: 4.15, y: 0.62, w: 5.5, h: 0.03,
    fill: { color: C.gold },
    line: { color: C.gold, width: 0 },
  });

  // Truth text (main)
  s.addText(truthText, {
    x: 4.15, y: 0.75, w: 5.55, h: 2.8,
    fontSize: 15.5, color: C.white,
    fontFace: "Calibri",
    lineSpacingMultiple: 1.3,
    valign: "top",
    wrap: true,
  });

  // Clinical note box
  s.addShape(pres.shapes.ROUNDED_RECTANGLE, {
    x: 4.15, y: 3.65, w: 5.55, h: 1.55,
    fill: { color: C.navyMid },
    line: { color: C.tealLt, width: 1.2 },
    rectRadius: 0.08,
  });

  s.addText("📋  Clinical Note", {
    x: 4.3, y: 3.72, w: 5.2, h: 0.32,
    fontSize: 9.5, color: C.tealLt,
    bold: true, fontFace: "Calibri",
  });

  s.addText(clinicalNote, {
    x: 4.3, y: 4.06, w: 5.2, h: 1.05,
    fontSize: 10.5, color: C.offWhite,
    fontFace: "Calibri",
    lineSpacingMultiple: 1.25,
    valign: "top",
    wrap: true,
  });

  addSlideNumber(s, num, 10, C.midGray);
  addBrandTag(s, C.midGray);
}

// ─── 5 MYTH SLIDES ─────────────────────────────────────────────
buildMythSlide(
  2, 1,
  "Yoga is too strenuous for heart patients",
  "Most yoga styles are moderate-intensity aerobic activity, similar to brisk walking. Supervised yoga is now included in cardiac rehabilitation programs. Multiple RCTs and meta-analyses confirm improvements in VO₂ max, blood pressure, and HRV in coronary artery disease patients.",
  "AHA-endorsed CR guidelines permit moderate-intensity mind-body exercise. A 2021 meta-analysis of RCTs (Bruce et al.) found yoga significantly improved systolic BP, BMI, and anxiety in CAD patients. Start with chair yoga or gentle Hatha. Avoid only if EF < 30% or unstable angina.",
  "❌"
);

buildMythSlide(
  3, 2,
  "Inversions are fine for everyone",
  "Inversions (headstand, shoulderstand, legs-up-the-wall) increase venous return and raise intrathoracic pressure acutely. This can spike systolic BP, increase cardiac preload, and trigger arrhythmias in susceptible individuals — especially in uncontrolled hypertension or raised ICP.",
  "Headstand raises mean arterial pressure significantly within seconds. Patients with uncontrolled HTN (BP > 160/100), glaucoma, heart failure, or aortic aneurysm must avoid full inversions. Even mild inversions (downward dog) should be introduced with caution and BP monitoring.",
  "⚠️"
);

buildMythSlide(
  4, 3,
  "Hot yoga is okay if you're fit",
  "Bikram/hot yoga (38–42 °C) causes significant cardiovascular strain even in fit individuals. Heat-induced vasodilation drops systemic vascular resistance, forcing the heart to compensate with increased output. In coronary disease, this raises ischemic risk and arrhythmia risk acutely.",
  "Core temperature rises 1–2 °C in a 90-min hot session. Dehydration reduces plasma volume, increasing blood viscosity — a thrombotic risk in post-MI or stent patients. Hot yoga is contraindicated in: HF, uncontrolled HTN, post-MI < 6 months, arrhythmia on therapy, and ICD patients.",
  "🌡️"
);

buildMythSlide(
  5, 4,
  "Breath retention (kumbhaka) improves heart health",
  "Prolonged breath retention triggers a Valsalva-like response — rising intrathoracic pressure cuts venous return, drops cardiac output, and on release causes a sudden surge in preload. This produces a bradycardia-tachycardia sequence that can precipitate syncope or dangerous arrhythmias.",
  "The Valsalva maneuver is used diagnostically to provoke arrhythmias (Fuster & Hurst's The Heart). 'Square-wave response' in heart failure signifies impaired cardiac reserve. Breath retention is contraindicated in: HF, uncontrolled HTN, post-cardiac surgery, and all arrhythmia patients.",
  "🫁"
);

buildMythSlide(
  6, 5,
  "Any yoga pose is safe",
  "Safety depends entirely on the individual's cardiac diagnosis, current EF, BP control, arrhythmia status, and fitness level. There is no universal 'safe' pose. Risk-stratification before starting yoga is as important as it is before any exercise prescription.",
  "ACC/AHA stratify cardiac exercise risk (low, intermediate, high). High-risk patients (recent ACS, EF < 35%, uncontrolled arrhythmias) require medically supervised settings. Yoga instructors must be trained in cardiac precautions; a medical clearance form is best practice before enrollment.",
  "🩺"
);

// ─── 3 GOLDEN RULES SLIDE ──────────────────────────────────────
(function buildGoldenRules() {
  const s = pres.addSlide();
  addBackground(s, C.teal);

  // Top decorative strip
  s.addShape(pres.shapes.RECTANGLE, {
    x: 0, y: 0, w: 10, h: 0.08,
    fill: { color: C.goldLt },
    line: { color: C.goldLt, width: 0 },
  });

  // Section label
  s.addText("THE 3 GOLDEN RULES OF CARDIAC YOGA", {
    x: 0.5, y: 0.18, w: 9, h: 0.4,
    fontSize: 11, color: C.goldLt,
    bold: true, charSpacing: 2,
    fontFace: "Calibri", align: "center",
  });

  // Divider
  s.addShape(pres.shapes.RECTANGLE, {
    x: 2.5, y: 0.6, w: 5, h: 0.035,
    fill: { color: C.goldLt },
    line: { color: C.goldLt, width: 0 },
  });

  const rules = [
    {
      n: "01",
      title: "No Valsalva Maneuver",
      body: "Never strain or hold breath during poses. Keep breathing fluid and continuous. Any pose requiring breath-holding or bearing-down creates dangerous intrathoracic pressure spikes.",
      icon: "🚫",
      y: 0.78,
    },
    {
      n: "02",
      title: "No Inversions in Uncontrolled Hypertension",
      body: "If BP > 160/100 mmHg, all inversions are contraindicated. Even partial inversions elevate MAP and ICP. Supine legs-elevated poses require physician clearance.",
      icon: "🚫",
      y: 2.1,
    },
    {
      n: "03",
      title: "No Breath Retention (Kumbhaka)",
      body: "Avoid all forms of prolonged breath retention. Pranayama for cardiac patients should consist of slow, smooth breathing (e.g., 4-count inhale / 4-count exhale) without any retention phase.",
      icon: "🚫",
      y: 3.42,
    },
  ];

  rules.forEach((r) => {
    // Rule card background
    s.addShape(pres.shapes.ROUNDED_RECTANGLE, {
      x: 0.4, y: r.y, w: 9.2, h: 1.15,
      fill: { color: C.tealLt, transparency: 30 },
      line: { color: C.white, width: 0.8 },
      rectRadius: 0.07,
      shadow: { type: "outer", color: "000000", blur: 5, offset: 2, angle: 135, opacity: 0.15 },
    });

    // Rule number
    s.addText(r.n, {
      x: 0.5, y: r.y + 0.08, w: 0.55, h: 0.5,
      fontSize: 20, color: C.goldLt,
      bold: true, fontFace: "Calibri",
    });

    // Icon
    s.addText(r.icon, {
      x: 1.0, y: r.y + 0.12, w: 0.45, h: 0.45,
      fontSize: 18, fontFace: "Segoe UI Emoji",
    });

    // Rule title
    s.addText(r.title, {
      x: 1.5, y: r.y + 0.1, w: 7.9, h: 0.38,
      fontSize: 14, color: C.white,
      bold: true, fontFace: "Calibri",
    });

    // Rule body
    s.addText(r.body, {
      x: 1.5, y: r.y + 0.5, w: 7.9, h: 0.62,
      fontSize: 10.5, color: C.offWhite,
      fontFace: "Calibri",
      lineSpacingMultiple: 1.2,
      wrap: true,
    });
  });

  addSlideNumber(s, 7, 10, C.white);
  addBrandTag(s, C.white);
  addBottomBar(s, C.goldLt);
})();

// ─── SLIDE 8: WHAT CARDIAC YOGA LOOKS LIKE ─────────────────────
(function buildSafePractice() {
  const s = pres.addSlide();
  addBackground(s, C.navy);

  // Accent bar right side
  s.addShape(pres.shapes.RECTANGLE, {
    x: 9.6, y: 0, w: 0.4, h: 5.625,
    fill: { color: C.teal },
    line: { color: C.teal, width: 0 },
  });

  s.addText("WHAT SAFE CARDIAC YOGA LOOKS LIKE", {
    x: 0.5, y: 0.2, w: 8.8, h: 0.4,
    fontSize: 11, color: C.tealLt,
    bold: true, charSpacing: 2.5,
    fontFace: "Calibri",
  });

  s.addShape(pres.shapes.RECTANGLE, {
    x: 0.5, y: 0.62, w: 6, h: 0.035,
    fill: { color: C.tealLt },
    line: { color: C.tealLt, width: 0 },
  });

  const items = [
    { icon: "✅", label: "Gentle Hatha, Restorative, Chair Yoga", detail: "Low-intensity, no inversions, no breath retention" },
    { icon: "✅", label: "Diaphragmatic breathing & slow pranayama", detail: "Activates vagal tone; lowers resting HR and BP" },
    { icon: "✅", label: "Seated or supine poses within comfort", detail: "Rate of perceived exertion: 11–13 / 20 (Borg scale)" },
    { icon: "✅", label: "Warm room only (< 28 °C)", detail: "Avoid Bikram, hot yoga, or heated studios" },
    { icon: "✅", label: "Medically cleared & instructor-supervised", detail: "Cardio-specific yoga instructors; physician sign-off" },
  ];

  items.forEach((item, i) => {
    const y = 0.82 + i * 0.87;

    s.addShape(pres.shapes.ROUNDED_RECTANGLE, {
      x: 0.4, y, w: 9.0, h: 0.74,
      fill: { color: C.navyMid },
      line: { color: C.teal, width: 0.7 },
      rectRadius: 0.06,
    });

    s.addText(item.icon, {
      x: 0.5, y: y + 0.12, w: 0.5, h: 0.4,
      fontSize: 18, fontFace: "Segoe UI Emoji",
    });

    s.addText(item.label, {
      x: 1.05, y: y + 0.08, w: 8.1, h: 0.32,
      fontSize: 13.5, color: C.white,
      bold: true, fontFace: "Calibri",
    });

    s.addText(item.detail, {
      x: 1.05, y: y + 0.4, w: 8.1, h: 0.28,
      fontSize: 10.5, color: C.lightGray,
      fontFace: "Calibri",
    });
  });

  addSlideNumber(s, 8, 10, C.midGray);
  addBrandTag(s, C.midGray);
})();

// ─── SLIDE 9: EVIDENCE SNAPSHOT ────────────────────────────────
(function buildEvidence() {
  const s = pres.addSlide();
  addBackground(s, C.navy);

  // Gold header strip
  s.addShape(pres.shapes.RECTANGLE, {
    x: 0, y: 0, w: 10, h: 1.1,
    fill: { color: C.gold },
    line: { color: C.gold, width: 0 },
  });

  s.addText("THE EVIDENCE", {
    x: 0.5, y: 0.15, w: 9, h: 0.45,
    fontSize: 22, color: C.navy,
    bold: true, fontFace: "Calibri",
    charSpacing: 2,
  });

  s.addText("What peer-reviewed research says about yoga in heart disease", {
    x: 0.5, y: 0.6, w: 9, h: 0.38,
    fontSize: 11.5, color: C.navyMid,
    fontFace: "Calibri",
    italic: true,
  });

  const findings = [
    {
      stat: "↓ 6.2 mmHg",
      label: "Systolic BP reduction",
      detail: "vs. control in CAD patients doing yoga-based CR\n(Bruce et al. 2021 meta-analysis, PMID 34880621)",
    },
    {
      stat: "↑ VO₂ max",
      label: "Cardiorespiratory fitness",
      detail: "Significantly improved with 12-week yoga programs\nin moderate-risk post-MI patients",
    },
    {
      stat: "↓ Anxiety",
      label: "Psychological benefit",
      detail: "Yoga reduces cortisol, improves HRV, and lowers\nanxiety scores in cardiac patients (HADS scale)",
    },
    {
      stat: "Safe",
      label: "No serious adverse events",
      detail: "No cardiac events reported in supervised yoga trials\nfor stable CAD (low-to-moderate risk tier)",
    },
  ];

  findings.forEach((f, i) => {
    const x = 0.3 + (i % 2) * 4.85;
    const y = 1.3 + Math.floor(i / 2) * 2.0;

    s.addShape(pres.shapes.ROUNDED_RECTANGLE, {
      x, y, w: 4.55, h: 1.7,
      fill: { color: C.navyMid },
      line: { color: C.gold, width: 1.0 },
      rectRadius: 0.1,
    });

    s.addText(f.stat, {
      x: x + 0.2, y: y + 0.12, w: 4.2, h: 0.5,
      fontSize: 26, color: C.goldLt,
      bold: true, fontFace: "Calibri",
    });

    s.addText(f.label, {
      x: x + 0.2, y: y + 0.6, w: 4.2, h: 0.32,
      fontSize: 12, color: C.white,
      bold: true, fontFace: "Calibri",
    });

    s.addText(f.detail, {
      x: x + 0.2, y: y + 0.92, w: 4.2, h: 0.7,
      fontSize: 9.5, color: C.lightGray,
      fontFace: "Calibri",
      lineSpacingMultiple: 1.2,
      wrap: true,
    });
  });

  addSlideNumber(s, 9, 10, C.midGray);
  addBrandTag(s, C.midGray);
})();

// ─── SLIDE 10: CLOSING ─────────────────────────────────────────
(function buildClosing() {
  const s = pres.addSlide();
  addBackground(s, C.navy);

  // Full-width teal band in center
  s.addShape(pres.shapes.RECTANGLE, {
    x: 0, y: 1.9, w: 10, h: 1.85,
    fill: { color: C.teal },
    line: { color: C.teal, width: 0 },
  });

  // Decorative corner circles
  s.addShape(pres.shapes.OVAL, {
    x: -0.7, y: -0.7, w: 2.5, h: 2.5,
    fill: { color: C.crimson, transparency: 70 },
    line: { color: C.crimson, width: 0 },
  });
  s.addShape(pres.shapes.OVAL, {
    x: 8.5, y: 3.8, w: 2.2, h: 2.2,
    fill: { color: C.gold, transparency: 75 },
    line: { color: C.gold, width: 0 },
  });

  // Top label
  s.addText("REMEMBER", {
    x: 0, y: 0.6, w: 10, h: 0.45,
    fontSize: 12, color: C.goldLt,
    bold: true, charSpacing: 4,
    fontFace: "Calibri", align: "center",
  });

  // Divider
  s.addShape(pres.shapes.RECTANGLE, {
    x: 4.0, y: 1.1, w: 2.0, h: 0.04,
    fill: { color: C.goldLt },
    line: { color: C.goldLt, width: 0 },
  });

  s.addText("Safe yoga is still\ntransformative yoga.", {
    x: 0, y: 1.1, w: 10, h: 1.5,
    fontSize: 36, color: C.white,
    bold: true, fontFace: "Calibri",
    align: "center",
    italic: false,
    lineSpacingMultiple: 1.15,
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  // Teal band content
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    x: 0.5, y: 2.1, w: 9, h: 0.55,
    fontSize: 18, color: C.white,
    fontFace: "Calibri", align: "center",
    bold: false, italic: true,
  });

  s.addText("The mat is a healing space when the science guides the practice.", {
    x: 0.5, y: 2.65, w: 9, h: 0.45,
    fontSize: 12, color: C.offWhite,
    fontFace: "Calibri", align: "center",
  });

  // Bottom: three rules reminder pills
  const pills = ["No Valsalva", "No Inversions (uncontrolled HTN)", "No Breath Retention"];
  const pillW = 2.8;
  const pillGap = 0.3;
  const totalW = pills.length * pillW + (pills.length - 1) * pillGap;
  const startX = (10 - totalW) / 2;

  pills.forEach((p, i) => {
    const px = startX + i * (pillW + pillGap);
    s.addShape(pres.shapes.ROUNDED_RECTANGLE, {
      x: px, y: 4.25, w: pillW, h: 0.48,
      fill: { color: C.crimson },
      line: { color: C.crimsonLt, width: 0.7 },
      rectRadius: 0.24,
    });
    s.addText(p, {
      x: px, y: 4.25, w: pillW, h: 0.48,
      fontSize: 9.5, color: C.white,
      bold: true, fontFace: "Calibri",
      align: "center", valign: "middle",
      margin: 0,
    });
  });

  addSlideNumber(s, 10, 10, C.midGray);
  addBrandTag(s, C.midGray);
  addBottomBar(s, C.tealLt);
})();

// ─── WRITE FILE ────────────────────────────────────────────────
pres.writeFile({ fileName: "/home/daytona/workspace/cardiac-yoga-carousel/Cardiac_Yoga_Myth_Buster.pptx" })
  .then(() => console.log("✅  File written successfully."))
  .catch((e) => { console.error("❌  Error:", e); process.exit(1); });