const pptxgen = require("pptxgenjs");
const pres = new pptxgen();
pres.layout = "LAYOUT_WIDE"; // 13.3" x 7.5"

// ─── COLOUR PALETTE ───────────────────────────────────────────────
const BG       = "0D1B2A";   // deep navy (dominant)
const PANEL    = "12263A";   // slightly lighter navy panel
const ACCENT1  = "00C2CB";   // teal – tuberculoma
const ACCENT2  = "F4A832";   // amber – neurocysticercosis
const ACCENT3  = "E84855";   // coral-red – brain abscess
const WHITE    = "FFFFFF";
const GREY     = "8FA3B1";
const DIVIDER  = "1E3A52";

// ─── HELPER ───────────────────────────────────────────────────────
function colCard(slide, x, w, color) {
  slide.addShape(pres.ShapeType.rect, {
    x, y: 0.78, w, h: 6.45,
    fill: { color: PANEL },
    line: { color: color, width: 2.5 }
  });
}

function hdrBar(slide, x, w, color, emoji, title, subtitle) {
  slide.addShape(pres.ShapeType.rect, {
    x, y: 0.78, w, h: 0.88,
    fill: { color: color }, line: { color: color, width: 0 }
  });
  slide.addText([
    { text: emoji + "  " + title, options: { bold: true, fontSize: 14, color: WHITE, breakLine: true } },
    { text: subtitle, options: { fontSize: 9.5, color: WHITE, italic: true } }
  ], { x: x + 0.12, y: 0.82, w: w - 0.24, h: 0.80, valign: "middle", margin: 0 });
}

function rowLabel(slide, y, label) {
  slide.addShape(pres.ShapeType.rect, {
    x: 0.18, y, w: 2.6, h: 0.56,
    fill: { color: DIVIDER }, line: { color: DIVIDER, width: 0 },
    rounding: 0.08
  });
  slide.addText(label, {
    x: 0.22, y: y + 0.04, w: 2.52, h: 0.48,
    fontSize: 9, bold: true, color: ACCENT1, valign: "middle", margin: 0, charSpacing: 1
  });
}

function cell(slide, x, y, w, lines, color) {
  // Thin left accent bar
  slide.addShape(pres.ShapeType.rect, {
    x: x + 0.10, y: y + 0.04, w: 0.04, h: 0.46,
    fill: { color }, line: { color, width: 0 }
  });
  const richLines = lines.map((l, i) => ({
    text: l,
    options: { breakLine: i < lines.length - 1 ? true : false }
  }));
  slide.addText(richLines, {
    x: x + 0.22, y: y + 0.03, w: w - 0.32, h: 0.52,
    fontSize: 8.8, color: WHITE, valign: "middle", margin: 0
  });
}

// ════════════════════════════════════════════════════════════════
//  SLIDE 1 – MASTER COMPARISON TABLE
// ════════════════════════════════════════════════════════════════
const s1 = pres.addSlide();
s1.background = { color: BG };

// Title bar
s1.addShape(pres.ShapeType.rect, {
  x: 0, y: 0, w: 13.3, h: 0.78, fill: { color: "091420" }, line: { color: "091420", width: 0 }
});
s1.addText("NEURO-INFECTIOUS MASS LESIONS  |  Visual Comparison Chart", {
  x: 0.3, y: 0.04, w: 10, h: 0.68, fontSize: 15, bold: true, color: WHITE, valign: "middle", margin: 0
});
s1.addText("Tuberculoma  •  Neurocysticercosis  •  Brain Abscess", {
  x: 0.3, y: 0.42, w: 13, h: 0.34, fontSize: 9, color: GREY, valign: "middle", margin: 0
});

// Column widths: row labels 2.78 | col1 3.38 | col2 3.38 | col3 3.38 | margins
const COL = [2.96, 6.34, 9.72];
const CW  = 3.22;

// Column cards + headers
colCard(s1, COL[0], CW, ACCENT1);
colCard(s1, COL[1], CW, ACCENT2);
colCard(s1, COL[2], CW, ACCENT3);

hdrBar(s1, COL[0], CW, ACCENT1, "🟦", "TUBERCULOMA",          "M. tuberculosis granuloma");
hdrBar(s1, COL[1], CW, ACCENT2, "🟨", "NEUROCYSTICERCOSIS",   "Taenia solium larvae");
hdrBar(s1, COL[2], CW, ACCENT3, "🟥", "PYOGENIC BRAIN ABSCESS","Bacterial / polymicrobial");

// Row definitions  [y-position, label, [tb data], [ncc data], [ba data]]
const ROWS = [
  [1.72, "CAUSATIVE AGENT",
    ["M. tuberculosis"],
    ["Taenia solium (larval cyst)"],
    ["Streptococcus, Staph,", "Gram-negatives (polymicrobial)"]
  ],
  [2.34, "EPIDEMIOLOGY",
    ["TB-endemic regions;", "immunocompromised"],
    ["Rural developing world;", "pork-eating populations"],
    ["Any; post-surgery, dental,", "ear/sinus source, IV drug use"]
  ],
  [2.96, "LOCATION",
    ["Grey-white junction;", "any lobe; posterior fossa kids"],
    ["Grey-white junction,", "subarachnoid / ventricular"],
    ["Frontal / temporal lobes;", "often near cortex"]
  ],
  [3.58, "NUMBER",
    ["Single or multiple"],
    ["Often multiple (all stages)"],
    ["Usually solitary; can be multiple"]
  ],
  [4.20, "CT APPEARANCE",
    ["Iso/hypo-dense; rim or solid", "enhancement; target sign*"],
    ["Cyst ± scolex (dense dot);", "wall calcification late stage"],
    ["Hypodense centre; thick", "irregular ring enhancement"]
  ],
  [4.82, "MRI SIGNATURE",
    ["T2 LOW in caseating stage", "(diagnostic clue); DWI variable"],
    ["T2 bright cyst fluid;", "scolex = eccentric T1 bright dot"],
    ["T2 bright centre; DWI", "BRIGHT (restricted diffusion)"]
  ],
  [5.44, "KEY DIAGNOSTICS",
    ["TST/IGRA; chest X-ray;", "CSF AFB/PCR; biopsy"],
    ["Serology (ELISA/EITB);", "scolex on MRI; stool O&P"],
    ["Blood cultures; CSF culture;", "Gram stain of aspirate"]
  ],
  [6.05, "TREATMENT",
    ["HRZE × 2 mo → HR × 7-10 mo;", "steroids if cerebral oedema"],
    ["Albendazole + praziquantel;", "anti-epileptics; steroids"],
    ["Surgical drainage / aspiration;", "IV antibiotics 4-8 weeks"]
  ],
];

ROWS.forEach(([y, label, tb, ncc, ba]) => {
  rowLabel(s1, y, label);
  cell(s1, COL[0], y, CW, tb,  ACCENT1);
  cell(s1, COL[1], y, CW, ncc, ACCENT2);
  cell(s1, COL[2], y, CW, ba,  ACCENT3);
});

// Footer note
s1.addText("* Target sign (central calcification + rim enhancement) seen in tuberculoma and cysticercosis — not pathognomonic for either  |  DWI = diffusion-weighted imaging  |  HRZE = isoniazid-rifampin-pyrazinamide-ethambutol", {
  x: 0.18, y: 7.18, w: 12.94, h: 0.28, fontSize: 6.5, color: GREY, valign: "middle", margin: 0
});

// ════════════════════════════════════════════════════════════════
//  SLIDE 2 – DWI / MRI SIGNAL QUICK-REFERENCE CARD
// ════════════════════════════════════════════════════════════════
const s2 = pres.addSlide();
s2.background = { color: BG };

s2.addShape(pres.ShapeType.rect, {
  x: 0, y: 0, w: 13.3, h: 0.78, fill: { color: "091420" }, line: { color: "091420", width: 0 }
});
s2.addText("MRI SIGNAL PATTERN  |  At-a-Glance Differentiator", {
  x: 0.3, y: 0.12, w: 12, h: 0.55, fontSize: 15, bold: true, color: WHITE, valign: "middle", margin: 0
});

// Signal grid helper
function sigBox(slide, x, y, w, h, fillColor, labelColor, label, detail) {
  slide.addShape(pres.ShapeType.roundRect, {
    x, y, w, h, rectRadius: 0.12,
    fill: { color: fillColor }, line: { color: fillColor, width: 0 }
  });
  slide.addText([
    { text: label, options: { bold: true, fontSize: 11, color: labelColor, breakLine: true } },
    { text: detail, options: { fontSize: 8.5, color: labelColor } }
  ], { x: x + 0.12, y, w: w - 0.24, h, valign: "middle", margin: 0 });
}

const sequences = [
  { seq: "T1 WI",  tb: ["Iso/hypo-intense", "rim may enhance"],         tbc: "1E3A52", ncc: ["Hypo-intense (cyst)", "Bright scolex dot"],       nccc: "1E4A2A", ba: ["Hypo-intense centre", "Enhancing thick rim"],       bac: "3A1E24" },
  { seq: "T2 WI",  tb: ["LOW signal", "(caseation – key clue)"],         tbc: "103A4A", ncc: ["HIGH signal (cyst fluid)", "Hypo scolex"],         nccc: "1E4A2A", ba: ["HIGH signal centre", "Surrounding oedema"],          bac: "3A1E24" },
  { seq: "DWI",    tb: ["Variable", "(elevated or restricted)"],          tbc: "1E3A52", ncc: ["Variable;", "cyst usually bright"],               nccc: "1E4A2A", ba: ["BRIGHT (restricted)", "Pus = high viscosity"],          bac: "5A1E28" },
  { seq: "T1+Gad", tb: ["Rim OR solid", "enhancement"],                  tbc: "1E3A52", ncc: ["Ring or nodular;", "scolex may enhance"],         nccc: "1E4A2A", ba: ["THICK irregular ring", "enhancement"],                 bac: "3A1E24" },
  { seq: "MRS",    tb: ["↑ Lipid/lactate", "No Cho:NAA shift"],          tbc: "1E3A52", ncc: ["Succinate peak", "(anaerobic glycolysis)"],        nccc: "1E4A2A", ba: ["↑ Acetate, succinate", "↑ Amino acids"],              bac: "3A1E24" },
];

// Column headers
[["TUBERCULOMA", ACCENT1], ["NEUROCYSTICERCOSIS", ACCENT2], ["BRAIN ABSCESS", ACCENT3]].forEach(([label, col], i) => {
  const x = 3.5 + i * 3.2;
  s2.addShape(pres.ShapeType.rect, { x, y: 0.82, w: 3.1, h: 0.44, fill: { color: col }, line: { color: col, width: 0 } });
  s2.addText(label, { x, y: 0.82, w: 3.1, h: 0.44, fontSize: 9, bold: true, color: WHITE, align: "center", valign: "middle", margin: 0 });
});

sequences.forEach((row, ri) => {
  const rowY = 1.32 + ri * 1.12;
  // Sequence label
  s2.addShape(pres.ShapeType.rect, { x: 0.18, y: rowY, w: 3.22, h: 1.0, fill: { color: DIVIDER }, line: { color: DIVIDER, width: 0 }, rounding: 0.1 });
  s2.addText(row.seq, { x: 0.18, y: rowY, w: 3.22, h: 1.0, fontSize: 12, bold: true, color: WHITE, align: "center", valign: "middle", margin: 0 });

  // TB cell
  sigBox(s2, 3.50, rowY, 3.1, 1.0, row.tbc, ACCENT1, row.tb[0], row.tb[1]);
  // NCC cell
  sigBox(s2, 6.70, rowY, 3.1, 1.0, row.nccc, ACCENT2, row.ncc[0], row.ncc[1]);
  // BA cell
  sigBox(s2, 9.90, rowY, 3.1, 1.0, row.bac, ACCENT3, row.ba[0], row.ba[1]);
});

s2.addText("MRS = Magnetic Resonance Spectroscopy  |  Gad = Gadolinium contrast  |  DWI restricted diffusion (bright) = high cellularity / viscosity", {
  x: 0.18, y: 7.18, w: 12.94, h: 0.28, fontSize: 6.5, color: GREY, valign: "middle", margin: 0
});

// ════════════════════════════════════════════════════════════════
//  SLIDE 3 – CLINICAL DECISION ALGORITHM
// ════════════════════════════════════════════════════════════════
const s3 = pres.addSlide();
s3.background = { color: BG };

s3.addShape(pres.ShapeType.rect, {
  x: 0, y: 0, w: 13.3, h: 0.78, fill: { color: "091420" }, line: { color: "091420", width: 0 }
});
s3.addText("CLINICAL DECISION FRAMEWORK  |  Ring-Enhancing Lesion Workup", {
  x: 0.3, y: 0.12, w: 12, h: 0.55, fontSize: 15, bold: true, color: WHITE, valign: "middle", margin: 0
});

// Decision boxes helper
function dBox(slide, x, y, w, h, fillColor, lineColor, text, textColor, fontSize) {
  slide.addShape(pres.ShapeType.roundRect, {
    x, y, w, h, rectRadius: 0.14,
    fill: { color: fillColor }, line: { color: lineColor, width: 1.5 }
  });
  slide.addText(text, {
    x: x + 0.08, y, w: w - 0.16, h, fontSize: fontSize || 9, color: textColor || WHITE,
    align: "center", valign: "middle", margin: 0, bold: false
  });
}

function arrow(slide, x1, y1, x2, y2, color) {
  slide.addShape(pres.ShapeType.line, {
    x: x1, y: y1, w: x2 - x1, h: y2 - y1,
    line: { color: color || GREY, width: 1.5, endArrowType: "arrow" }
  });
}

// Start node
dBox(s3, 4.9, 0.90, 3.5, 0.62, "1A2E42", ACCENT1, "Ring/nodular enhancing brain\nlesion on CT/MRI", WHITE, 9.5);

// 3 branches
const branches = [
  { x: 0.6,  color: ACCENT1, title: "DWI BRIGHT\n+ Fever + Leukocytosis", dx: 1.0,  dw: 2.5, dh: 0.72,
    items: ["Blood cultures (3 sets)", "CT chest/abdomen", "Ear / dental exam", "MRS: ↑ acetate/succinate", "→ BRAIN ABSCESS"] },
  { x: 4.9,  color: ACCENT2, title: "SCOLEX visible\n+ Pork exposure + Seizures", dx: 4.9, dw: 3.5, dh: 0.72,
    items: ["Serology: EITB/ELISA", "Stool O&P", "MRS: succinate peak", "All-stage cysts on MRI", "→ NEUROCYSTICERCOSIS"] },
  { x: 9.2,  color: ACCENT1, title: "T2 LOW signal\n+ TB history + Caseation", dx: 9.2, dw: 3.5, dh: 0.72,
    items: ["TST / IGRA", "Chest X-ray / CT", "CSF AFB PCR", "Sputum culture", "→ TUBERCULOMA"] },
];

// branch connectors
arrow(s3, 6.65, 1.52, 1.85, 2.08, GREY);
arrow(s3, 6.65, 1.52, 6.65, 2.08, GREY);
arrow(s3, 6.65, 1.52, 10.95, 2.08, GREY);

branches.forEach((b, i) => {
  dBox(s3, b.dx, 2.08, b.dw, b.dh, "1E3A52", b.color, b.title, WHITE, 9);
  b.items.forEach((item, ii) => {
    const yy = 2.92 + ii * 0.60;
    const isFinal = item.startsWith("→");
    s3.addShape(pres.ShapeType.rect, {
      x: b.dx + 0.04, y: yy, w: b.dw - 0.08, h: 0.54,
      fill: { color: isFinal ? b.color : "162B3E" },
      line: { color: isFinal ? b.color : DIVIDER, width: isFinal ? 0 : 0.5 }
    });
    s3.addText(item, {
      x: b.dx + 0.12, y: yy, w: b.dw - 0.2, h: 0.54,
      fontSize: isFinal ? 9.5 : 8.5, bold: isFinal, color: WHITE,
      align: "left", valign: "middle", margin: 0
    });
  });
});

// HIV patient note
s3.addShape(pres.ShapeType.roundRect, {
  x: 0.18, y: 6.45, w: 12.94, h: 0.72, rectRadius: 0.1,
  fill: { color: "1A1A2E" }, line: { color: "7B5EA7", width: 1.5 }
});
s3.addText("⚠  HIV PATIENT (CD4 < 100):  Empirically treat Toxoplasma first (pyrimethamine + sulfadiazine × 2 wks) → repeat MRI.  If no response → biopsy.  Also consider PCNSL (EBV PCR in CSF), CMV encephalitis, PML (JC virus PCR).", {
  x: 0.30, y: 6.50, w: 12.70, h: 0.62, fontSize: 8.5, color: "C9B8E8", valign: "middle", margin: 0
});

// ════════════════════════════════════════════════════════════════
//  Save
// ════════════════════════════════════════════════════════════════
pres.writeFile({ fileName: "/home/daytona/workspace/neuro-comparison/Tuberculoma_vs_NCC_vs_BrainAbscess.pptx" })
  .then(() => console.log("DONE"))
  .catch(e => console.error(e));