const pptxgen = require("pptxgenjs");

let pres = new pptxgen();
pres.layout = 'LAYOUT_WIDE'; // 13.3" x 7.5" — poster format
pres.title = 'Rasayana Therapy in Long-term Asthma Control';

// ── COLOUR PALETTE (Ayurvedic earthy-saffron theme) ──────────────────────────
const C = {
  saffron:   "E07B39",   // dominant warm accent
  deep:      "2D1A0E",   // near-black for text
  bg:        "FDF6EC",   // warm cream background
  panel:     "F5E6C8",   // lighter panel
  darkPanel: "5C3317",   // dark mahogany for headings
  green:     "3A6B35",   // herb green accent
  white:     "FFFFFF",
  gold:      "C8922A",   // gold for borders/highlights
  lightGold: "F0D080",
};

// ── SINGLE-SLIDE POSTER ──────────────────────────────────────────────────────
let slide = pres.addSlide();

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

// ── TOP HEADER BAND ──────────────────────────────────────────────────────────
slide.addShape(pres.ShapeType.rect, { x:0, y:0, w:13.3, h:1.05, fill:{color:C.darkPanel}, line:{color:C.gold, pt:2} });

// Institution tag (left)
slide.addText("Department of Kaumarabhritya | PG Scholar Presentation", {
  x:0.2, y:0.04, w:7, h:0.25, fontSize:9, color:C.lightGold, bold:false, italic:true, fontFace:"Calibri"
});

// Date (right)
slide.addText("May 2026", {
  x:11.5, y:0.04, w:1.6, h:0.25, fontSize:9, color:C.lightGold, italic:true, fontFace:"Calibri", align:"right"
});

// Main Title
slide.addText("RASAYANA THERAPY IN LONG-TERM ASTHMA CONTROL", {
  x:0.2, y:0.22, w:13, h:0.55,
  fontSize:22, bold:true, color:C.white, fontFace:"Calibri",
  align:"center", charSpacing:2
});

// Subtitle
slide.addText("Tamaka Shwasa — Classical Perspective & Modern Rationale", {
  x:0.2, y:0.75, w:13, h:0.26,
  fontSize:11, italic:true, color:C.lightGold, fontFace:"Calibri", align:"center"
});

// ── GOLD DIVIDER ─────────────────────────────────────────────────────────────
slide.addShape(pres.ShapeType.rect, { x:0, y:1.05, w:13.3, h:0.05, fill:{color:C.gold}, line:{color:C.gold} });

// ═══════════════════════════════════════════════════════════════════════════
// COLUMN LAYOUT  |  Col1: 0.15–4.2  |  Col2: 4.35–8.8  |  Col3: 8.95–13.1
// ═══════════════════════════════════════════════════════════════════════════
const colX = [0.15, 4.35, 8.95];
const colW = 4.05;
const rowY = 1.18;

// ── HELPER FUNCTIONS ─────────────────────────────────────────────────────────
function sectionBox(slide, x, y, w, h) {
  slide.addShape(pres.ShapeType.rect, {
    x, y, w, h,
    fill:{color:C.white}, line:{color:C.gold, pt:1.2},
    shadow:{type:"outer", color:"C8922A", opacity:0.18, blur:4, offset:2, angle:45}
  });
}

function sectionTitle(slide, text, x, y, w) {
  slide.addShape(pres.ShapeType.rect, { x, y, w, h:0.30, fill:{color:C.saffron}, line:{color:C.saffron} });
  slide.addText(text, {
    x:x+0.05, y:y, w:w-0.1, h:0.30,
    fontSize:9.5, bold:true, color:C.white, fontFace:"Calibri", valign:"middle", margin:0
  });
}

function bulletList(slide, items, x, y, w, h, refItems) {
  let textArr = items.map((item, i) => {
    let arr = [{ text: item, options:{bullet:{code:"2022"}, bold:false, fontSize:8.5, color:C.deep, fontFace:"Calibri", breakLine: i<items.length-1 || (refItems&&refItems.length>0)} }];
    return arr[0];
  });
  if(refItems && refItems.length>0){
    refItems.forEach((r,i)=>{
      textArr.push({text: r, options:{bullet:false, italic:true, fontSize:7.2, color:"8B5E3C", fontFace:"Calibri", breakLine: i<refItems.length-1}});
    });
  }
  slide.addText(textArr, { x:x+0.08, y, w:w-0.16, h, valign:"top", margin:2 });
}

// ══════════════════════════════════════════════════════════════════════════════
// COLUMN 1
// ══════════════════════════════════════════════════════════════════════════════

// ── BOX 1: Introduction ──────────────────────────────────────────────────────
let b1y = rowY;
let b1h = 1.35;
sectionBox(slide, colX[0], b1y, colW, b1h);
sectionTitle(slide, "🫁  INTRODUCTION — TAMAKA SHWASA", colX[0], b1y, colW);
bulletList(slide, [
  "Bronchial Asthma ≈ Tamaka Shwasa — one of 5 types of Shwasa Roga",
  "Kapha-Vataja Vikara; site of origin — Pitta Sthana (Charaka)",
  "Features: Ghurghurkam (wheezing), Pinasa (rhinorrhoea), Asinolabhate Soukhyam (orthopnea), Pratamaka & Santamaka variants",
  "Classified as Yapya (palliable); Sadhya in early/strong constitution",
], colX[0], b1y+0.32, colW, b1h-0.34,
["Ch.Chi.17; Su.Ut.51; A.H.Ni.4"]);

// ── BOX 2: Nidana (Etiology) ─────────────────────────────────────────────────
let b2y = b1y + b1h + 0.10;
let b2h = 1.20;
sectionBox(slide, colX[0], b2y, colW, b2h);
sectionTitle(slide, "⚗️  NIDANA (ETIOLOGY)", colX[0], b2y, colW);
bulletList(slide, [
  "Dhuma (smoke), Raja (dust), Sheeta sthana, Sheeta bhojana",
  "Ativyayama, Guru bhojana, Abhighata (trauma)",
  "Vata vitiation → Kapha Aavrana → Srotodushti of Pranavaha Srotas",
  "Children: Beeja dosha, Janmabala pradosha vikara",
], colX[0], b2y+0.32, colW, b2h-0.34,
["Ch.Chi.17/9-14; Su.Ut.51/3"]);

// ── BOX 3: Samprapti (Pathogenesis) ─────────────────────────────────────────
let b3y = b2y + b2h + 0.10;
let b3h = 1.38;
sectionBox(slide, colX[0], b3y, colW, b3h);
sectionTitle(slide, "🔬  SAMPRAPTI (PATHOGENESIS)", colX[0], b3y, colW);
bulletList(slide, [
  "Nidana → Vata-Kapha Prakopa → Srotodushti",
  "Vitiated Vata obstructed by Kapha in Pranavaha Srotas",
  "Prana Vayu & Apana Vayu Vimarga gati → Shwasa krichra",
  "Repeated exacerbations deplete Ojas → Dhatukshaya → chronicity",
  "Avega avastha offers window for Rasayana intervention",
], colX[0], b3y+0.32, colW, b3h-0.34,
["Ch.Chi.17/56-62; A.H.Ni.4/4-10"]);

// ── BOX 4: Modern Correlation (small) ────────────────────────────────────────
let b4y = b3y + b3h + 0.10;
let b4h = 1.15;
sectionBox(slide, colX[0], b4y, colW, b4h);
sectionTitle(slide, "🏥  MODERN CORRELATION", colX[0], b4y, colW);
bulletList(slide, [
  "Chronic inflammatory airway disease — IgE-mediated hypersensitivity",
  "Mast cell, eosinophil, Th2 cytokine driven",
  "Airway hyperresponsiveness & remodelling ≡ Srotodushti + Dhatukshaya",
  "GINA 2024: Long-term controller therapy essential",
], colX[0], b4y+0.32, colW, b4h-0.34, []);

// ══════════════════════════════════════════════════════════════════════════════
// COLUMN 2
// ══════════════════════════════════════════════════════════════════════════════

// ── BOX 5: Rasayana — Definition & Classification ────────────────────────────
let c2y = rowY;
let c2h = 1.48;
sectionBox(slide, colX[1], c2y, colW, c2h);
sectionTitle(slide, "📜  RASAYANA — DEFINITION & CLASSIFICATION", colX[1], c2y, colW);

// Shloka box
slide.addShape(pres.ShapeType.rect, {
  x:colX[1]+0.08, y:c2y+0.34, w:colW-0.16, h:0.40,
  fill:{color:C.panel}, line:{color:C.gold, pt:0.8}
});
slide.addText([
  {text:"\"Labhopayo Hi Shastanam Rasadinam Rasayanam\"", options:{italic:true, bold:true, fontSize:8.8, color:C.darkPanel, fontFace:"Calibri"}},
  {text:"\n— Ch.Chi.1/1/8  |  Nourishing Rasa dhatu onwards = Rasayana", options:{italic:true, fontSize:7.5, color:"8B5E3C", fontFace:"Calibri"}}
], { x:colX[1]+0.10, y:c2y+0.35, w:colW-0.20, h:0.38, valign:"middle" });

bulletList(slide, [
  "Kutipraveshika (indoor) vs Vatatapika (outdoor) Rasayana",
  "Dravya Rasayana (herbal/mineral) & Adravya Rasayana (lifestyle/conduct)",
  "Aim: Jara-vyadhi nashana, Ayu-varna-bala-medha promotion",
], colX[1], c2y+0.78, colW, c2h-0.80,
["Ch.Chi.1/1/7-8; Su.Chi.27; A.H.Ut.39"]);

// ── BOX 6: Rasayana Drugs for Shwasa ─────────────────────────────────────────
let c2b2y = c2y + c2h + 0.10;
let c2b2h = 1.58;
sectionBox(slide, colX[1], c2b2y, colW, c2b2h);
sectionTitle(slide, "🌿  KEY RASAYANA DRUGS IN TAMAKA SHWASA", colX[1], c2b2y, colW);

// Table-like drug cards
const drugs = [
  { name:"Pippali (Piper longum)", action:"Bronchodilator, Rasayana, Deepana", ref:"Ch.Chi.17; Cha.Ka.12" },
  { name:"Haridra (Curcuma longa)", action:"Anti-inflammatory, Anti-allergic, Immune modulator", ref:"Ch.Su.4; Sha.Sam." },
  { name:"Guduchi (Tinospora cordifolia)", action:"Tridoshaghna Rasayana, Anti-oxidant, Immunostimulant", ref:"Ch.Chi.1; A.H.Chi.40" },
  { name:"Ashwagandha (Withania somnifera)", action:"Adaptogen, Balya, Ojovardhaka", ref:"Ch.Chi.1/3; Su.Chi.27" },
  { name:"Amalaki (Emblica officinalis)", action:"Vayasthapana, anti-oxidant, Vata-Pitta hara", ref:"Ch.Chi.1/1; Dhanvantari Nighantu" },
];
let dy = c2b2y + 0.33;
drugs.forEach(d => {
  slide.addText([
    {text: d.name + " — ", options:{bold:true, fontSize:8, color:C.green, fontFace:"Calibri"}},
    {text: d.action, options:{fontSize:7.8, color:C.deep, fontFace:"Calibri"}},
    {text: "  [" + d.ref + "]", options:{italic:true, fontSize:7, color:"8B5E3C", fontFace:"Calibri"}},
  ], { x:colX[1]+0.10, y:dy, w:colW-0.20, h:0.23, valign:"top", margin:0 });
  dy += 0.23;
});

// ── BOX 7: Chyawanprasha ─────────────────────────────────────────────────────
let c2b3y = c2b2y + c2b2h + 0.10;
let c2b3h = 1.08;
sectionBox(slide, colX[1], c2b3y, colW, c2b3h);
sectionTitle(slide, "✨  CHYAWANPRASHA — THE CHIEF RASAYANA", colX[1], c2b3y, colW);
bulletList(slide, [
  "Classical formulation of Acharya Chyavana; first described in Ch.Chi.1/1",
  "Amalaki (48 herbs) base: Vayasthapana, Ojo-vardhaka, Shwasahara",
  "Pippali, Ghrita, Madhu: Kaphahara + Vatanulomana + Rasayana triad",
  "Reduces recurrence of respiratory infections; builds sustained immunity (Vyadhikshamatva)",
], colX[1], c2b3y+0.32, colW, c2b3h-0.34,
["Ch.Chi.1/1/62-74; Sha.Sam.Kha.4; Yo.Rat.Swa.Chi."]);

// ══════════════════════════════════════════════════════════════════════════════
// COLUMN 3
// ══════════════════════════════════════════════════════════════════════════════

// ── BOX 8: Treatment Protocol — Avegavastha ──────────────────────────────────
let c3y = rowY;
let c3h = 1.50;
sectionBox(slide, colX[2], c3y, colW, c3h);
sectionTitle(slide, "💊  CHIKITSA KRAMA (TREATMENT PROTOCOL)", colX[2], c3y, colW);
bulletList(slide, [
  "VEGAVASTHA: Shodhana — Vamana (Kapha nirharana), Virechana (Srotoshodhana)",
  "AVEGAVASTHA: Shamana — Vatakaphaghna, Ushna, Vatanulomana drugs",
  "RASAYANA follows post-Shodhana (Shuddha shareera = fertile ground)",
  "\"Ashuddhe Rasayanam Sevitam Na Phalati\" — like seed on barren soil",
  "Duration: Minimum 3–6 months continuous for long-term control",
], colX[2], c3y+0.32, colW, c3h-0.34,
["Ch.Chi.17/56-62; Su.Ut.51; A.H.Chi.4"]);

// ── BOX 9: Rasayana Formulations (Table) ─────────────────────────────────────
let c3b2y = c3y + c3h + 0.10;
let c3b2h = 1.60;
sectionBox(slide, colX[2], c3b2y, colW, c3b2h);
sectionTitle(slide, "📋  CLASSICAL RASAYANA FORMULATIONS FOR SHWASA", colX[2], c3b2y, colW);

const formulations = [
  { form:"Chyawanprasha Avaleha", use:"Preventive + Rasayana", ref:"Ch.Chi.1/1" },
  { form:"Agastyaharitaki Avaleha", use:"Kasa-Shwasa, Rasayana", ref:"Ch.Chi.17/134; Sha.Sam." },
  { form:"Vasa Avaleha", use:"Bronchodilator + Rasayana for Pranavaha", ref:"Ch.Chi.17; Sha.Sam.Kha.4" },
  { form:"Bharangyadi Avaleha", use:"Kaumarabhritya practice, anti-allergic", ref:"Sha.Sam.; IPGT&RA study" },
  { form:"Pippali Rasayana", use:"Anupana + Rasayana, Shwasahara", ref:"Ch.Chi.1/3/9; Yo.Rat." },
  { form:"Haridra Kshira Paka", use:"Anti-inflammatory; Vyadhikshamatva", ref:"Ch.Ka.12; A.H.Chi.1" },
];
let fy = c3b2y + 0.33;
formulations.forEach(f => {
  slide.addText([
    {text: "▸ " + f.form, options:{bold:true, fontSize:8, color:C.darkPanel, fontFace:"Calibri"}},
    {text: " — " + f.use, options:{fontSize:7.8, color:C.deep, fontFace:"Calibri"}},
    {text: "  [" + f.ref + "]", options:{italic:true, fontSize:7, color:"8B5E3C", fontFace:"Calibri"}},
  ], { x:colX[2]+0.10, y:fy, w:colW-0.20, h:0.22, valign:"top", margin:0 });
  fy += 0.22;
});

// ── BOX 10: Mechanism — Rasayana → Asthma Control ────────────────────────────
let c3b3y = c3b2y + c3b2h + 0.10;
let c3b3h = 1.10;
sectionBox(slide, colX[2], c3b3y, colW, c3b3h);
sectionTitle(slide, "🔗  MECHANISM — HOW RASAYANA CONTROLS ASTHMA", colX[2], c3b3y, colW);

// Flow arrows
const mechs = [
  "Deepana-Pachana → Ama Nashana → Srotas Shuddhi",
  "Ojas Vardhana → Vyadhikshamatva ↑ (immunomodulation)",
  "Balya + Rasayana → Lung tissue nourishment & elasticity",
  "Adaptogenic → reduces Stress-induced Vata-Kapha aggravation",
];
bulletList(slide, mechs, colX[2], c3b3y+0.32, colW, c3b3h-0.34, []);

// ══════════════════════════════════════════════════════════════════════════════
// BOTTOM BANNER — Conclusion + References
// ══════════════════════════════════════════════════════════════════════════════
let botY = 6.50;
slide.addShape(pres.ShapeType.rect, { x:0, y:botY, w:13.3, h:0.85, fill:{color:C.darkPanel}, line:{color:C.gold, pt:1.5} });

// Conclusion (left 2/3)
slide.addText([
  {text:"CONCLUSION: ", options:{bold:true, fontSize:9.5, color:C.lightGold, fontFace:"Calibri"}},
  {text:"Rasayana therapy, rooted in Charaka Samhita (Chi.1) and corroborated by Sushruta & Vagbhata, provides a scientifically rational, long-term disease-modifying approach to Tamaka Shwasa (Bronchial Asthma). By nourishing Pranavaha Srotas, enhancing Vyadhikshamatva (immunomodulation), and restoring Dhatu equilibrium, Rasayana formulations such as Chyawanprasha, Agastyaharitaki, and Pippali Rasayana significantly reduce attack frequency, improve quality of life, and offer a safe alternative to long-term steroid dependency — especially relevant in the Kaumarabhritya context.", 
    options:{fontSize:8.5, color:C.white, fontFace:"Calibri"}}
], { x:0.15, y:botY+0.06, w:9.5, h:0.75, valign:"middle", margin:2 });

// Abbreviations/key ref (right)
slide.addText([
  {text:"Key Classical Abbreviations:\n", options:{bold:true, fontSize:7.5, color:C.lightGold, fontFace:"Calibri"}},
  {text:"Ch.Chi. = Charaka Chikitsa Sthana  |  Su.Ut. = Sushruta Uttara Tantra\nA.H. = Ashtanga Hridaya  |  Sha.Sam. = Sharangadhara Samhita\nYo.Rat. = Yogaratnakar  |  Ch.Ka. = Charaka Kalpa Sthana", 
    options:{fontSize:7, color:C.white, fontFace:"Calibri"}}
], { x:9.75, y:botY+0.05, w:3.4, h:0.78, valign:"middle", margin:2 });

// ── GOLD BORDER AROUND ENTIRE SLIDE ─────────────────────────────────────────
slide.addShape(pres.ShapeType.rect, { x:0.05, y:0.05, w:13.20, h:7.40, fill:{type:"none"}, line:{color:C.gold, pt:2} });

// ── DECORATIVE VERTICAL DIVIDERS ────────────────────────────────────────────
[4.28, 8.88].forEach(xp => {
  slide.addShape(pres.ShapeType.line, {
    x:xp, y:rowY, w:0, h:5.22,
    line:{color:C.gold, pt:0.8, dashType:"dash"}
  });
});

// ── SAVE ─────────────────────────────────────────────────────────────────────
pres.writeFile({ fileName: "/home/daytona/workspace/rasayana-poster/Rasayana_Asthma_Poster.pptx" })
  .then(() => console.log("✅ Poster saved successfully."))
  .catch(err => console.error("❌ Error:", err));