const pptxgen = require("pptxgenjs");

const pres = new pptxgen();
pres.layout = "LAYOUT_WIDE"; // 13.3" x 7.5"
pres.title = "Emergency Drug Reference Chart";
pres.author = "Emergency Medicine Reference";

// ─── COLOR PALETTE ────────────────────────────────────────────────────────────
const C = {
  bg:        "0D1B2A",   // deep navy
  header:    "C62828",   // urgent red
  cat1:      "1565C0",   // royal blue  (catecholamines)
  cat2:      "2E7D32",   // green       (antiemetics / GI)
  cat3:      "6A1B9A",   // purple      (analgesics)
  cat4:      "E65100",   // deep orange (anticonvulsants / sedation)
  cat5:      "00838F",   // teal        (cardiac / vasoactive)
  cat6:      "558B2F",   // olive       (haemostatics)
  cat7:      "4527A0",   // indigo      (antihistamine)
  cat8:      "37474F",   // slate       (IV fluids)
  white:     "FFFFFF",
  lightGray: "E3E8F0",
  accent:    "FFD600",   // yellow accent
  text:      "FFFFFF",
};

// ─── DRUG DATA ────────────────────────────────────────────────────────────────
// Columns: Drug | Category | Mechanism | Indications | Contraindications | Dose | Max Dose | Dilution/How to Use | Shelf Life | Half-Life
const drugs = [
  {
    name: "Labetalol",
    category: "α/β-Blocker",
    catColor: C.cat5,
    mechanism: "Blocks α1 + β1/β2 → ↓ HR, ↓ SVR",
    indications: "Hypertensive emergency, pre-eclampsia, aortic dissection",
    contra: "Asthma, COPD, 2°/3° AV block, severe bradycardia, cardiogenic shock",
    dose: "IV: 20 mg slow bolus over 2 min; repeat 40–80 mg q10 min\nInfusion: 1–2 mg/min",
    maxDose: "300 mg total bolus | Infusion: 2 mg/min",
    dilution: "Infusion: 200 mg in 160 mL NS/D5W → 1 mg/mL. Give at 2 mL/min",
    shelfLife: "Vials: 2 yrs (room temp). After dilution: 24 h",
    halfLife: "3–8 hours",
  },
  {
    name: "Metoclopramide",
    category: "Prokinetic / Antiemetic",
    catColor: C.cat2,
    mechanism: "D2-antagonist (CTZ) + 5-HT4 agonist → ↑ gastric motility",
    indications: "Nausea/vomiting, gastroparesis, GERD, migraine adjunct",
    contra: "Parkinson's, phaeochromocytoma, GI obstruction/perforation, prolactinoma",
    dose: "IV/IM: 10 mg over ≥3 min | Oral: 10 mg TDS",
    maxDose: "30 mg/day IV; 5 days max continuous use",
    dilution: "May give undiluted (5 mg/mL) slow IV push; or dilute in 50 mL NS over 15 min",
    shelfLife: "3 yrs unopened. After dilution: 48 h at room temp",
    halfLife: "4–6 hours",
  },
  {
    name: "Tramadol",
    category: "Opioid / Analgesic",
    catColor: C.cat3,
    mechanism: "Weak μ-opioid agonist + inhibits NE/5-HT reuptake",
    indications: "Moderate–severe pain",
    contra: "Seizure disorder, SSRIs/MAOIs (serotonin syndrome), respiratory depression, renal failure (severe)",
    dose: "IV: 50–100 mg slow (>15 min) q4–6 h | Oral: 50–100 mg q4–6 h",
    maxDose: "400 mg/day (oral); 600 mg/day (IV)",
    dilution: "Dilute 100 mg in 100 mL NS or D5W; infuse over 15–30 min",
    shelfLife: "3–5 yrs. After dilution: 24 h",
    halfLife: "5–6 hours (active metabolite O-DTMP ~9 h)",
  },
  {
    name: "Avil (Pheniramine)",
    category: "Antihistamine (H1)",
    catColor: C.cat7,
    mechanism: "Competitive H1-receptor antagonist → blocks histamine-mediated responses",
    indications: "Allergic reactions, urticaria, anaphylaxis adjunct, pre-medication",
    contra: "Glaucoma, BPH, MAOI use, neonates, severe liver disease",
    dose: "IM/IV slow: 22.75 mg (1 ampoule) | Can repeat in 4–6 h",
    maxDose: "90 mg/day",
    dilution: "Give IV slowly over 2–3 min undiluted OR dilute in 10 mL NS",
    shelfLife: "3 yrs. After dilution: 24 h",
    halfLife: "16–19 hours",
  },
  {
    name: "Tranexamic Acid",
    category: "Antifibrinolytic",
    catColor: C.cat6,
    mechanism: "Competitive inhibitor of plasminogen activation → prevents fibrin clot dissolution",
    indications: "Trauma haemorrhage (within 3 h), PPH, surgical bleeding, haemoptysis",
    contra: "Active thromboembolic disease, subarachnoid haemorrhage, hypersensitivity",
    dose: "Trauma: 1 g IV over 10 min, then 1 g over 8 h\nPPH: 1 g IV over 10 min (repeat once if bleeding continues)",
    maxDose: "2 g per episode (trauma); 4 g/day",
    dilution: "1 g in 100 mL NS/D5W/RL; infuse at 1 mL/min. Avoid rapid IV push",
    shelfLife: "3–5 yrs. After dilution: 24 h",
    halfLife: "2–3 hours",
  },
  {
    name: "Tapentadol",
    category: "Opioid / Analgesic",
    catColor: C.cat3,
    mechanism: "μ-opioid agonist + NE reuptake inhibitor (dual MOA, no serotonergic effect)",
    indications: "Moderate–severe acute/chronic pain, diabetic neuropathic pain",
    contra: "MAOIs (within 14 days), respiratory depression, severe renal/hepatic impairment, paralytic ileus",
    dose: "Oral: 50–100 mg q4–6 h IR | IV: Not routinely available (oral use preferred)",
    maxDose: "600 mg/day (IR)",
    dilution: "No standard IV formulation. Oral tablets: swallow whole with water",
    shelfLife: "3 yrs (oral tablets)",
    halfLife: "4–6 hours",
  },
  {
    name: "Phenytoin",
    category: "Anticonvulsant",
    catColor: C.cat4,
    mechanism: "Blocks voltage-gated Na⁺ channels → stabilises neuronal membrane → reduces seizure spread",
    indications: "Status epilepticus (2nd line), seizure prophylaxis, trigeminal neuralgia",
    contra: "Sinus bradycardia, SA/AV block, Adams-Stokes syndrome, porphyria",
    dose: "Loading: 15–20 mg/kg IV at max 50 mg/min (with ECG monitoring)\nMaintenance: 5–7 mg/kg/day",
    maxDose: "1500 mg loading dose | Infusion max 50 mg/min",
    dilution: "ONLY in NS (precipitates in dextrose). Dilute to ≤5 mg/mL; use filter needle; give through large-bore IV",
    shelfLife: "5 yrs. After dilution: use within 1 h (precipitation risk)",
    halfLife: "22–36 hours (dose-dependent, non-linear kinetics)",
  },
  {
    name: "Lorazepam",
    category: "Benzodiazepine",
    catColor: C.cat4,
    mechanism: "GABA-A receptor positive allosteric modulator → ↑ Cl⁻ conductance → neuronal inhibition",
    indications: "Status epilepticus (1st line), acute anxiety, procedural sedation, alcohol withdrawal",
    contra: "Respiratory depression, acute angle-closure glaucoma, severe hepatic impairment, myasthenia gravis",
    dose: "SE: 0.1 mg/kg IV (usual 4 mg) over 2–5 min; may repeat after 5–10 min\nAnxiety/sedation: 1–2 mg IV/IM",
    maxDose: "8 mg per episode (SE); 10 mg/day",
    dilution: "Dilute 1:1 with NS/D5W/WFI for IV use; do NOT dilute IM form",
    shelfLife: "2 yrs refrigerated. After dilution: 24 h (refrigerated)",
    halfLife: "10–20 hours",
  },
  {
    name: "Ondansetron",
    category: "5-HT3 Antagonist",
    catColor: C.cat2,
    mechanism: "5-HT3 receptor antagonist (CTZ + vagal afferents) → suppresses emesis",
    indications: "PONV, chemotherapy-induced N&V, radiation-induced N&V, acute gastroenteritis",
    contra: "Congenital long QT, co-administration with apomorphine; caution with QT-prolonging drugs",
    dose: "IV: 4–8 mg slow over 15 min or 30 s\nOral: 4–8 mg TDS | IM: 4 mg",
    maxDose: "32 mg/day IV (16 mg single IV dose in adults); 24 mg/day oral",
    dilution: "Dilute 4–8 mg in 50 mL NS/D5W; infuse over 15 min. Can give 4 mg slow IV push over 30 s",
    shelfLife: "3 yrs. After dilution: 48 h at room temp / 7 days refrigerated",
    halfLife: "3–5 hours",
  },
  {
    name: "Noradrenaline\n(Norepinephrine)",
    category: "Vasopressor",
    catColor: C.cat1,
    mechanism: "α1 > α2 agonist (potent vasoconstriction) + mild β1 → ↑ MAP, ↑ SVR",
    indications: "Septic shock (1st line), distributive shock, cardiogenic shock (adjunct)",
    contra: "Hypovolaemic shock (without volume resuscitation); mesenteric/peripheral vascular thrombosis; halothane anaesthesia",
    dose: "0.01–3 mcg/kg/min IV infusion (titrate to MAP ≥65 mmHg)\nStart: 0.01–0.1 mcg/kg/min",
    maxDose: "3 mcg/kg/min (higher doses used in refractory shock under expert guidance)",
    dilution: "4 mg in 250 mL NS/D5W → 16 mcg/mL. CENTRAL LINE preferred. Avoid extravasation",
    shelfLife: "2 yrs. After dilution: 24 h protected from light",
    halfLife: "1–3 minutes (IV bolus)",
  },
  {
    name: "Adrenaline\n(Epinephrine)",
    category: "Catecholamine / Vasopressor",
    catColor: C.cat1,
    mechanism: "α1/α2 + β1/β2 agonist → ↑ HR, ↑ CO, bronchodilation, vasoconstriction",
    indications: "Anaphylaxis (1st line), cardiac arrest (ACLS), severe bronchospasm, croup",
    contra: "Narrow-angle glaucoma; relative: ischaemic heart disease, hypertension",
    dose: "Anaphylaxis: 0.5 mg (1:1000) IM thigh\nCardiac arrest: 1 mg (1:10,000) IV q3–5 min\nInfusion: 0.1–1 mcg/kg/min",
    maxDose: "Repeat IM q5–15 min as needed | Infusion up to 1 mcg/kg/min (higher in refractory shock)",
    dilution: "Infusion: 1 mg in 250 mL NS → 4 mcg/mL. Dilute 1:10,000 for IV bolus: 1 mg in 10 mL NS",
    shelfLife: "2 yrs (protect from light). After dilution: 24 h",
    halfLife: "1–3 minutes (IV)",
  },
  {
    name: "Dobutamine",
    category: "Inotrope",
    catColor: C.cat1,
    mechanism: "β1 > β2 agonist → ↑ CO, ↑ inotropy, mild ↓ SVR (vasodilatory)",
    indications: "Cardiogenic shock, acute decompensated HF, stress echocardiography",
    contra: "HOCM (outflow tract obstruction), tachyarrhythmias, uncorrected hypovolaemia",
    dose: "2.5–20 mcg/kg/min IV infusion; start at 2.5–5 mcg/kg/min",
    maxDose: "40 mcg/kg/min",
    dilution: "250 mg in 250 mL D5W or NS → 1 mg/mL. Use via infusion pump. Peripheral line acceptable",
    shelfLife: "2 yrs. After dilution: 24 h at room temp / 48 h refrigerated",
    halfLife: "2 minutes",
  },
  {
    name: "Dopamine",
    category: "Catecholamine / Inotrope",
    catColor: C.cat1,
    mechanism: "Dose-dependent: Low (1–5 mcg/kg/min) D1/D2 → renal; Mid (5–10) β1 → inotrope; High (>10) α1 → vasopressor",
    indications: "Cardiogenic shock, symptomatic bradycardia (when atropine fails), haemodynamic instability",
    contra: "Phaeochromocytoma, uncorrected tachyarrhythmias, VF; caution: MAOI use",
    dose: "2–20 mcg/kg/min IV (titrate to effect)\n• Renal: 2–5 mcg/kg/min\n• Cardiac: 5–10 mcg/kg/min\n• Vasopressor: 10–20 mcg/kg/min",
    maxDose: "50 mcg/kg/min (refractory shock)",
    dilution: "400 mg in 250 mL D5W/NS → 1.6 mg/mL. Infusion pump mandatory. Central line preferred >10 mcg/kg/min",
    shelfLife: "2 yrs. After dilution: 24 h",
    halfLife: "~2 minutes",
  },
  {
    name: "Atropine",
    category: "Anticholinergic",
    catColor: C.cat5,
    mechanism: "Competitive muscarinic receptor antagonist → blocks vagal tone → ↑ HR, ↓ secretions",
    indications: "Symptomatic bradycardia, organophosphate poisoning, pre-anaesthetic medication, AV block",
    contra: "Narrow-angle glaucoma, obstructive uropathy/GI obstruction, tachycardia",
    dose: "Bradycardia: 0.5–1 mg IV q3–5 min\nOrganophosphate poisoning: 2–4 mg IV q5–10 min (titrate to secretion drying)\nPre-op: 0.4–0.6 mg IM",
    maxDose: "3 mg total IV (bradycardia); No set max for organophosphate poisoning",
    dilution: "Can give undiluted IV push (0.5 mg/mL or 1 mg/mL). Dilute in 10 mL NS if preferred",
    shelfLife: "3–5 yrs. After dilution: 24 h",
    halfLife: "2–3 hours",
  },
  {
    name: "Nitroglycerin (GTN)",
    category: "Nitrate / Vasodilator",
    catColor: C.cat5,
    mechanism: "Metabolised to NO → activates guanylyl cyclase → ↑ cGMP → smooth muscle relaxation → venodilation > arteriodilation",
    indications: "Acute coronary syndrome (angina/NSTEMI/STEMI), acute HF with pulmonary oedema, hypertensive emergency",
    contra: "Hypotension (SBP <90 mmHg), RV infarction, severe aortic stenosis, PDE5 inhibitor use (sildenafil/tadalafil) within 24–48 h",
    dose: "SL: 0.3–0.6 mg q5 min (max 3 doses)\nIV infusion: 5–200 mcg/min (start 5–10 mcg/min, titrate)",
    maxDose: "200 mcg/min infusion; 3 SL doses before escalating",
    dilution: "25 mg in 250 mL D5W/NS → 100 mcg/mL. Use non-PVC tubing (adsorbs to PVC). Change bottle q24 h",
    shelfLife: "2–5 yrs (sealed). After dilution: 24 h (non-PVC, protect from light)",
    halfLife: "1–4 minutes (IV); SL onset 1–2 min, duration 30–60 min",
  },
];

// ─── IV FLUIDS DATA ───────────────────────────────────────────────────────────
const fluids = [
  {
    name: "Normal Saline (0.9% NaCl)",
    comp: "Na⁺ 154, Cl⁻ 154 mEq/L | Osmolarity 308 mOsm/L",
    use: "Volume resuscitation, hyponatraemia, hypochloraemia, drug diluent",
    contra: "Hypernatraemia, hyperchloraemic acidosis, oedematous states",
    dose: "250–1000 mL bolus; maintenance 1–2 mL/kg/h",
    note: "Universal diluent for most IV drugs",
  },
  {
    name: "Ringer's Lactate (RL)",
    comp: "Na⁺ 130, K⁺ 4, Ca²⁺ 3, Cl⁻ 109, Lactate 28 mEq/L | 273 mOsm/L",
    use: "Trauma, burns, surgical losses, hypovolaemia — more physiological than NS",
    contra: "Hepatic failure (lactate metabolism), hyperKalaemia, head injury (mild hypotonicity)",
    dose: "1–2 L bolus in haemorrhagic shock; maintenance per fluid balance",
    note: "Preferred in trauma/surgery. Do NOT mix with blood products (Ca²⁺ causes clotting)",
  },
  {
    name: "Dextrose 5% (D5W)",
    comp: "Dextrose 50 g/L | Osmolarity 252 mOsm/L (hypotonic after metabolism)",
    use: "Drug diluent (GTN, dopamine, dobutamine), hypoglycaemia, hypernatraemia, fluid maintenance",
    contra: "Cerebral oedema, uncorrected hyponatraemia, hyperglycaemia",
    dose: "Maintenance: 1–2 mL/kg/h; hypoglycaemia: 50 mL D50% (25 g glucose)",
    note: "Free water distributes evenly; not for volume resuscitation",
  },
  {
    name: "Dextrose-Saline (DNS 5%/0.45%)",
    comp: "Dextrose 50 g/L + Na⁺ 77, Cl⁻ 77 mEq/L | 405 mOsm/L",
    use: "Maintenance fluids (paeds + adults), post-op fluid replacement",
    contra: "Hypernatraemia, hyperglycaemia, SIADH",
    dose: "Paeds: 100 mL/kg/day (first 10 kg) + 50 mL/kg/day (next 10 kg) + 20 mL/kg/day (remaining)",
    note: "Holliday-Segar formula for paediatric maintenance",
  },
  {
    name: "Colloid – Albumin 4.5%",
    comp: "Human albumin 45 g/L | Oncotic pressure ~20 mmHg",
    use: "Hypoalbuminaemia (<20 g/L), spontaneous bacterial peritonitis, hepatorenal syndrome, burns (after 24 h)",
    contra: "Cardiac failure, severe anaemia, hypervolaemia",
    dose: "100–200 mL infused over 4–6 h; SBP: 1.5 g/kg IV",
    note: "Expensive; no mortality benefit over crystalloids in most ICU patients",
  },
];

// ─── HELPERS ─────────────────────────────────────────────────────────────────
function wrapText(text, fontSize = 6.5) {
  return text || "";
}

// ─── SLIDE 1: TITLE / OVERVIEW ───────────────────────────────────────────────
function addTitleSlide(pres) {
  const slide = pres.addSlide();
  // Background
  slide.addShape(pres.shapes.RECTANGLE, { x: 0, y: 0, w: 13.3, h: 7.5, fill: { color: C.bg }, line: { color: C.bg } });
  // Red accent bar top
  slide.addShape(pres.shapes.RECTANGLE, { x: 0, y: 0, w: 13.3, h: 0.6, fill: { color: C.header }, line: { color: C.header } });
  // Red accent bar bottom
  slide.addShape(pres.shapes.RECTANGLE, { x: 0, y: 6.9, w: 13.3, h: 0.6, fill: { color: C.header }, line: { color: C.header } });

  // Cross symbol
  slide.addShape(pres.shapes.RECTANGLE, { x: 1.0, y: 2.5, w: 0.2, h: 1.0, fill: { color: C.accent }, line: { color: C.accent } });
  slide.addShape(pres.shapes.RECTANGLE, { x: 0.75, y: 2.75, w: 0.7, h: 0.5, fill: { color: C.accent }, line: { color: C.accent } });

  slide.addText("EMERGENCY DRUG", { x: 1.6, y: 1.9, w: 10, h: 0.9, fontSize: 44, bold: true, color: C.white, fontFace: "Arial" });
  slide.addText("REFERENCE CHART", { x: 1.6, y: 2.65, w: 10, h: 0.9, fontSize: 44, bold: true, color: C.accent, fontFace: "Arial" });
  slide.addText("Mechanism • Indications • Contraindications • Dosing • Dilution • Shelf Life • Half-Life", {
    x: 1.6, y: 3.55, w: 10, h: 0.5, fontSize: 14, color: "AABBCC", fontFace: "Arial", italic: true
  });

  // Drug list
  const drugNames = [
    "Labetalol  |  Metoclopramide  |  Tramadol  |  Avil (Pheniramine)  |  Tranexamic Acid  |  Tapentadol",
    "Phenytoin  |  Lorazepam  |  Ondansetron  |  Noradrenaline  |  Adrenaline  |  Dobutamine",
    "Dopamine  |  Atropine  |  Nitroglycerin (GTN)  |  IV Fluids"
  ];
  drugNames.forEach((line, i) => {
    slide.addText(line, { x: 1.0, y: 4.3 + i * 0.42, w: 11.3, h: 0.4, fontSize: 11, color: "CCDDEE", fontFace: "Arial", align: "center" });
  });

  slide.addText("Emergency Medicine  •  Critical Care  •  ICU / ED Reference  •  April 2026", {
    x: 0, y: 6.95, w: 13.3, h: 0.5, fontSize: 10, color: C.white, fontFace: "Arial", align: "center"
  });
  slide.addText("⚠  For clinical guidance only. Verify doses per local formulary & patient weight.", {
    x: 0, y: 0.07, w: 13.3, h: 0.45, fontSize: 10, color: C.white, fontFace: "Arial", align: "center", bold: true
  });
}

// ─── DRUG TABLE SLIDES (batches of 5) ───────────────────────────────────────
function addDrugTableSlides(pres, drugs) {
  // Each batch = up to 5 drugs per slide
  const batchSize = 5;
  const batches = [];
  for (let i = 0; i < drugs.length; i += batchSize) {
    batches.push(drugs.slice(i, i + batchSize));
  }

  batches.forEach((batch, bi) => {
    const slide = pres.addSlide();

    // BG
    slide.addShape(pres.shapes.RECTANGLE, { x: 0, y: 0, w: 13.3, h: 7.5, fill: { color: C.bg }, line: { color: C.bg } });

    // Header bar
    slide.addShape(pres.shapes.RECTANGLE, { x: 0, y: 0, w: 13.3, h: 0.45, fill: { color: C.header }, line: { color: C.header } });
    slide.addText(`EMERGENCY DRUG CHART  —  Part ${bi + 1}`, {
      x: 0.1, y: 0.04, w: 9, h: 0.38, fontSize: 13, bold: true, color: C.white, fontFace: "Arial"
    });
    slide.addText("⚠ Verify doses per local formulary", {
      x: 9.5, y: 0.04, w: 3.7, h: 0.38, fontSize: 9, color: C.accent, fontFace: "Arial", align: "right"
    });

    // Column headers
    const cols = [
      { label: "DRUG / CLASS",        x: 0.05, w: 1.30 },
      { label: "MECHANISM",           x: 1.40, w: 1.65 },
      { label: "INDICATIONS",         x: 3.10, w: 1.70 },
      { label: "CONTRA-\nINDICATIONS",x: 4.85, w: 1.60 },
      { label: "DOSE",                x: 6.50, w: 1.90 },
      { label: "MAX DOSE",            x: 8.45, w: 1.10 },
      { label: "DILUTION / HOW TO USE",x:9.60, w: 2.00 },
      { label: "SHELF LIFE",          x: 11.65, w: 0.82 },
      { label: "½ LIFE",              x: 12.50, w: 0.75 },
    ];

    const hdrY = 0.5;
    cols.forEach(col => {
      slide.addShape(pres.shapes.RECTANGLE, {
        x: col.x, y: hdrY, w: col.w, h: 0.42,
        fill: { color: "1A2D45" }, line: { color: "2A4A70", pt: 0.5 }
      });
      slide.addText(col.label, {
        x: col.x + 0.02, y: hdrY + 0.01, w: col.w - 0.04, h: 0.40,
        fontSize: 6.8, bold: true, color: C.accent, fontFace: "Arial", align: "center", valign: "middle"
      });
    });

    // Row height
    const rowH = (7.5 - hdrY - 0.42 - 0.08) / batchSize;
    const rowStartY = hdrY + 0.42 + 0.03;

    batch.forEach((drug, ri) => {
      const ry = rowStartY + ri * rowH;
      const rowBg = ri % 2 === 0 ? "0F2233" : "0D1B2A";

      // Row bg
      slide.addShape(pres.shapes.RECTANGLE, {
        x: 0.05, y: ry, w: 13.2, h: rowH - 0.03,
        fill: { color: rowBg }, line: { color: "1E3550", pt: 0.3 }
      });

      // Category accent left bar
      slide.addShape(pres.shapes.RECTANGLE, {
        x: 0.05, y: ry, w: 0.08, h: rowH - 0.03,
        fill: { color: drug.catColor }, line: { color: drug.catColor }
      });

      const fs = 6.2;
      const cellPad = 0.04;
      const textProps = { fontSize: fs, color: C.white, fontFace: "Arial", valign: "top", wrap: true };

      // Drug name cell
      slide.addText([
        { text: drug.name + "\n", options: { bold: true, fontSize: 7.2, color: C.accent, breakLine: true } },
        { text: drug.category, options: { fontSize: 5.8, color: "88AACC", italic: true } }
      ], { x: cols[0].x + 0.12, y: ry + cellPad, w: cols[0].w - 0.15, h: rowH - 0.08, ...textProps });

      // Mechanism
      slide.addText(drug.mechanism, {
        x: cols[1].x + cellPad, y: ry + cellPad, w: cols[1].w - 0.08, h: rowH - 0.08, ...textProps
      });
      // Indications
      slide.addText(drug.indications, {
        x: cols[2].x + cellPad, y: ry + cellPad, w: cols[2].w - 0.08, h: rowH - 0.08, ...textProps, color: "AAFFAA"
      });
      // Contraindications
      slide.addText(drug.contra, {
        x: cols[3].x + cellPad, y: ry + cellPad, w: cols[3].w - 0.08, h: rowH - 0.08, ...textProps, color: "FFAAAA"
      });
      // Dose
      slide.addText(drug.dose, {
        x: cols[4].x + cellPad, y: ry + cellPad, w: cols[4].w - 0.08, h: rowH - 0.08, ...textProps, color: "FFFFCC"
      });
      // Max dose
      slide.addText(drug.maxDose, {
        x: cols[5].x + cellPad, y: ry + cellPad, w: cols[5].w - 0.08, h: rowH - 0.08, ...textProps, color: "FFCCAA"
      });
      // Dilution
      slide.addText(drug.dilution, {
        x: cols[6].x + cellPad, y: ry + cellPad, w: cols[6].w - 0.08, h: rowH - 0.08, ...textProps, color: "CCEEFF"
      });
      // Shelf life
      slide.addText(drug.shelfLife, {
        x: cols[7].x + cellPad, y: ry + cellPad, w: cols[7].w - 0.08, h: rowH - 0.08, ...textProps, color: "DDDDFF"
      });
      // Half life
      slide.addText(drug.halfLife, {
        x: cols[8].x + cellPad, y: ry + cellPad, w: cols[8].w - 0.08, h: rowH - 0.08, ...textProps, color: "FFDDFF"
      });

      // Vertical dividers
      cols.slice(1).forEach(col => {
        slide.addShape(pres.shapes.LINE, {
          x: col.x, y: ry, w: 0, h: rowH - 0.03,
          line: { color: "1E3550", pt: 0.3 }
        });
      });
    });
  });
}

// ─── IV FLUIDS SLIDE ─────────────────────────────────────────────────────────
function addIVFluidsSlide(pres, fluids) {
  const slide = pres.addSlide();
  slide.addShape(pres.shapes.RECTANGLE, { x: 0, y: 0, w: 13.3, h: 7.5, fill: { color: C.bg }, line: { color: C.bg } });
  slide.addShape(pres.shapes.RECTANGLE, { x: 0, y: 0, w: 13.3, h: 0.45, fill: { color: C.cat8 }, line: { color: C.cat8 } });
  slide.addText("IV FLUIDS QUICK REFERENCE", {
    x: 0.2, y: 0.04, w: 9, h: 0.38, fontSize: 14, bold: true, color: C.white, fontFace: "Arial"
  });
  slide.addText("⚠ Crystalloids first-line for resuscitation", {
    x: 9.5, y: 0.04, w: 3.7, h: 0.38, fontSize: 9, color: C.accent, align: "right", fontFace: "Arial"
  });

  const fcols = [
    { label: "FLUID",            x: 0.05, w: 2.10 },
    { label: "COMPOSITION",      x: 2.20, w: 2.20 },
    { label: "INDICATIONS",      x: 4.45, w: 2.40 },
    { label: "CONTRAINDICATIONS",x: 6.90, w: 2.10 },
    { label: "DOSE / RATE",      x: 9.05, w: 2.00 },
    { label: "NOTES",            x: 11.10, w: 2.15 },
  ];

  const hdrY = 0.5;
  fcols.forEach(col => {
    slide.addShape(pres.shapes.RECTANGLE, {
      x: col.x, y: hdrY, w: col.w, h: 0.38,
      fill: { color: "1A2D45" }, line: { color: "2A4A70", pt: 0.5 }
    });
    slide.addText(col.label, {
      x: col.x + 0.02, y: hdrY + 0.01, w: col.w - 0.04, h: 0.36,
      fontSize: 7.2, bold: true, color: C.accent, fontFace: "Arial", align: "center", valign: "middle"
    });
  });

  const rowH = (7.5 - hdrY - 0.38 - 0.1) / fluids.length;
  const rowStartY = hdrY + 0.38 + 0.04;
  const fluidColors = [C.cat5, C.cat2, C.cat3, C.cat4, C.cat6];

  fluids.forEach((fl, ri) => {
    const ry = rowStartY + ri * rowH;
    const rowBg = ri % 2 === 0 ? "0F2233" : "0D1B2A";

    slide.addShape(pres.shapes.RECTANGLE, {
      x: 0.05, y: ry, w: 13.2, h: rowH - 0.03,
      fill: { color: rowBg }, line: { color: "1E3550", pt: 0.3 }
    });
    slide.addShape(pres.shapes.RECTANGLE, {
      x: 0.05, y: ry, w: 0.08, h: rowH - 0.03,
      fill: { color: fluidColors[ri] || C.cat5 }, line: { color: fluidColors[ri] || C.cat5 }
    });

    const fs = 6.8;
    const cp = 0.04;
    const tp = { fontSize: fs, color: C.white, fontFace: "Arial", valign: "top", wrap: true };

    slide.addText(fl.name, { x: fcols[0].x + 0.14, y: ry + cp, w: fcols[0].w - 0.18, h: rowH - 0.08, ...tp, bold: true, color: C.accent });
    slide.addText(fl.comp, { x: fcols[1].x + cp, y: ry + cp, w: fcols[1].w - 0.08, h: rowH - 0.08, ...tp });
    slide.addText(fl.use, { x: fcols[2].x + cp, y: ry + cp, w: fcols[2].w - 0.08, h: rowH - 0.08, ...tp, color: "AAFFAA" });
    slide.addText(fl.contra, { x: fcols[3].x + cp, y: ry + cp, w: fcols[3].w - 0.08, h: rowH - 0.08, ...tp, color: "FFAAAA" });
    slide.addText(fl.dose, { x: fcols[4].x + cp, y: ry + cp, w: fcols[4].w - 0.08, h: rowH - 0.08, ...tp, color: "FFFFCC" });
    slide.addText(fl.note, { x: fcols[5].x + cp, y: ry + cp, w: fcols[5].w - 0.08, h: rowH - 0.08, ...tp, color: "CCEEFF" });
  });
}

// ─── QUICK REFERENCE / CHEAT SHEET SLIDE ─────────────────────────────────────
function addCheatSheetSlide(pres) {
  const slide = pres.addSlide();
  slide.addShape(pres.shapes.RECTANGLE, { x: 0, y: 0, w: 13.3, h: 7.5, fill: { color: C.bg }, line: { color: C.bg } });
  slide.addShape(pres.shapes.RECTANGLE, { x: 0, y: 0, w: 13.3, h: 0.45, fill: { color: "880000" }, line: { color: "880000" } });
  slide.addText("EMERGENCY QUICK-PICK GUIDE", {
    x: 0.2, y: 0.04, w: 13, h: 0.38, fontSize: 14, bold: true, color: C.white, fontFace: "Arial", align: "center"
  });

  const cards = [
    { title: "ANAPHYLAXIS", color: C.header, drugs: "1st: Adrenaline 0.5 mg IM (1:1000)\n2nd: Avil 22.75 mg IV slow\n3rd: Ondansetron (N/V)\nMonitor: BP, O₂, ECG" },
    { title: "STATUS EPILEPTICUS", color: C.cat4, drugs: "1st: Lorazepam 0.1 mg/kg IV (max 4 mg)\n2nd: Phenytoin 20 mg/kg IV (max 50 mg/min)\nAirway / O₂ / BGL" },
    { title: "HYPERTENSIVE EMERGENCY", color: C.cat5, drugs: "IV Labetalol 20 mg bolus, then 40–80 mg\nOR GTN infusion 5–200 mcg/min\nTarget: ↓ MAP by 25% in 1st hour" },
    { title: "SEPTIC SHOCK", color: C.cat1, drugs: "Fluid: 30 mL/kg NS/RL bolus\n1st vasopressor: Noradrenaline 0.1–3 mcg/kg/min\n2nd: Vasopressin (if refractory)" },
    { title: "CARDIOGENIC SHOCK", color: C.cat5, drugs: "Dobutamine 5–20 mcg/kg/min (↑ CO)\n+ Noradrenaline if MAP <65\nAvoid: excessive fluids" },
    { title: "NAUSEA / VOMITING", color: C.cat2, drugs: "Ondansetron 4–8 mg IV over 15 min\nMetoclopramide 10 mg IV slow (if motility needed)\nCheck: QTc before ondansetron" },
    { title: "PAIN (MODERATE-SEVERE)", color: C.cat3, drugs: "Tramadol 100 mg IV over 15 min\nTapentadol 50–100 mg oral\nAvoid tramadol with SSRIs" },
    { title: "BLEEDING / HAEMORRHAGE", color: C.cat6, drugs: "Tranexamic acid 1 g IV over 10 min\nGive within 3 h of injury (trauma)\nPPH: repeat 1 g if bleeding continues" },
    { title: "BRADYCARDIA (SYMPTOMATIC)", color: "007700", drugs: "Atropine 0.5–1 mg IV push\nRepeat q3–5 min, max 3 mg\nRefractory: Dopamine infusion 5–10 mcg/kg/min" },
  ];

  const cols = 3;
  const rows = Math.ceil(cards.length / cols);
  const cw = 4.2;
  const ch = (7.5 - 0.45 - 0.15) / rows - 0.06;
  const startX = 0.15;
  const startY = 0.55;

  cards.forEach((card, i) => {
    const col = i % cols;
    const row = Math.floor(i / cols);
    const cx = startX + col * (cw + 0.1);
    const cy = startY + row * (ch + 0.06);

    slide.addShape(pres.shapes.ROUNDED_RECTANGLE, {
      x: cx, y: cy, w: cw, h: ch,
      fill: { color: "0F2233" }, line: { color: card.color, pt: 1 }, rectRadius: 0.08
    });
    slide.addShape(pres.shapes.ROUNDED_RECTANGLE, {
      x: cx, y: cy, w: cw, h: 0.28,
      fill: { color: card.color }, line: { color: card.color }, rectRadius: 0.08
    });
    slide.addText(card.title, {
      x: cx + 0.08, y: cy + 0.02, w: cw - 0.16, h: 0.25,
      fontSize: 8.5, bold: true, color: C.white, fontFace: "Arial", align: "center"
    });
    slide.addText(card.drugs, {
      x: cx + 0.1, y: cy + 0.30, w: cw - 0.2, h: ch - 0.35,
      fontSize: 7.2, color: C.white, fontFace: "Arial", valign: "top", wrap: true
    });
  });
}

// ─── BUILD PRESENTATION ───────────────────────────────────────────────────────
addTitleSlide(pres);
addDrugTableSlides(pres, drugs);
addIVFluidsSlide(pres, fluids);
addCheatSheetSlide(pres);

const outPath = "/home/daytona/workspace/emergency-drug-poster/Emergency_Drug_Reference_Chart.pptx";
pres.writeFile({ fileName: outPath }).then(() => {
  console.log("SUCCESS: " + outPath);
}).catch(err => {
  console.error("ERROR:", err);
});