// Sahh — Core nutrition engine · v0.3 (calibrated 04 May 2026) // Real, working calculator. Parses natural-language recipes, computes // calories / macros / Sahh Score, and exposes an interactive demo. // // Strategy (v0.3): // 1. Local FOOD_DB covers ~60 common SA / ME ingredients with per-100g // values from USDA + SFDA composition tables. // 2. Parser extracts (qty, unit, ingredient) tuples from each recipe line. // 3. Engine sums macros using Atwater (4/4/9 kcal per g of P/C/F). // 4. Sahh Score = weighted blend against MoH/SFDA/WHO EMRO anchors: // Sat fat 20% · Sodium 20% · Free sugar 20% · // Energy density 15% · Protein+fibre 25% // 5. Tier: 80–100 Balanced · 60–79 Mindful · 40–59 Moderate · 0–39 Indulgent. // 6. If a line cannot be resolved locally, fallback to Claude. // // All numbers are deterministic for the same input; Claude is only used // for unresolved tokens, behind a single async call. // ============================================================ // FOOD DATABASE (per 100g, edible portion) // ============================================================ const FOOD_DB = { // proteins "chicken breast": { kcal: 165, p: 31, c: 0, f: 3.6, proc: 0, fresh: 1.0, micros: 0.7, src: "USDA 05062" }, "chicken thigh": { kcal: 209, p: 26, c: 0, f: 11, proc: 0, fresh: 1.0, micros: 0.7, src: "USDA 05095" }, "salmon": { kcal: 208, p: 20, c: 0, f: 13, proc: 0, fresh: 1.0, micros: 0.95,src: "USDA 15076" }, "beef": { kcal: 250, p: 26, c: 0, f: 17, proc: 0, fresh: 1.0, micros: 0.8, src: "USDA 23568" }, "ground beef": { kcal: 254, p: 26, c: 0, f: 17, proc: 0.1, fresh: 0.95, micros: 0.75, src: "USDA 23566" }, "lamb": { kcal: 294, p: 25, c: 0, f: 21, proc: 0, fresh: 1.0, micros: 0.85, src: "USDA 17239" }, "shrimp": { kcal: 99, p: 24, c: 0.2, f: 0.3, proc: 0, fresh: 1.0, micros: 0.8, src: "USDA 15149" }, "egg": { kcal: 155, p: 13, c: 1.1, f: 11, proc: 0, fresh: 1.0, micros: 0.85, src: "USDA 01129" }, "tofu": { kcal: 76, p: 8, c: 1.9, f: 4.8, proc: 0.1, fresh: 0.9, micros: 0.7, src: "USDA 16427" }, "labneh": { kcal: 174, p: 9, c: 5, f: 13, proc: 0.05, fresh: 0.95, micros: 0.6, src: "SFDA-DAIRY-12" }, "feta": { kcal: 264, p: 14, c: 4.1, f: 21, proc: 0.1, fresh: 0.9, micros: 0.6, src: "USDA 01019" }, "halloumi": { kcal: 316, p: 22, c: 2, f: 25, proc: 0.1, fresh: 0.9, micros: 0.55, src: "SFDA-DAIRY-21" }, // grains / starches "rice": { kcal: 130, p: 2.7,c: 28, f: 0.3, proc: 0, fresh: 0.85, micros: 0.4, src: "USDA 20444" }, "basmati rice": { kcal: 121, p: 3, c: 25, f: 0.4, proc: 0, fresh: 0.85, micros: 0.45, src: "USDA 20452" }, "brown rice": { kcal: 123, p: 2.7,c: 26, f: 1, proc: 0, fresh: 0.95, micros: 0.7, src: "USDA 20040" }, "quinoa": { kcal: 120, p: 4.4,c: 21, f: 1.9, proc: 0, fresh: 0.95, micros: 0.85, src: "USDA 20137" }, "bulgur": { kcal: 83, p: 3.1,c: 19, f: 0.2, proc: 0, fresh: 0.95, micros: 0.7, src: "USDA 20013" }, "couscous": { kcal: 112, p: 3.8,c: 23, f: 0.2, proc: 0.1, fresh: 0.85, micros: 0.45, src: "USDA 20029" }, "pasta": { kcal: 158, p: 5.8,c: 31, f: 0.9, proc: 0.1, fresh: 0.85, micros: 0.4, src: "USDA 20100" }, "bread": { kcal: 265, p: 9, c: 49, f: 3.2, proc: 0.2, fresh: 0.85, micros: 0.4, src: "USDA 18064" }, "pita": { kcal: 275, p: 9, c: 56, f: 1, proc: 0.15, fresh: 0.85, micros: 0.4, src: "USDA 18414" }, "potato": { kcal: 77, p: 2, c: 17, f: 0.1, proc: 0, fresh: 0.95, micros: 0.6, src: "USDA 11362" }, // vegetables "tomato": { kcal: 18, p: 0.9,c: 3.9, f: 0.2, proc: 0, fresh: 1.0, micros: 0.85, src: "USDA 11529" }, "cucumber": { kcal: 16, p: 0.7,c: 3.6, f: 0.1, proc: 0, fresh: 1.0, micros: 0.7, src: "USDA 11206" }, "lettuce": { kcal: 15, p: 1.4,c: 2.9, f: 0.2, proc: 0, fresh: 1.0, micros: 0.85, src: "USDA 11253" }, "romaine lettuce": { kcal: 17, p: 1.2,c: 3.3, f: 0.3, proc: 0, fresh: 1.0, micros: 0.9, src: "USDA 11251" }, "kale": { kcal: 49, p: 4.3,c: 9, f: 0.9, proc: 0, fresh: 1.0, micros: 1.0, src: "USDA 11233" }, "spinach": { kcal: 23, p: 2.9,c: 3.6, f: 0.4, proc: 0, fresh: 1.0, micros: 1.0, src: "USDA 11457" }, "onion": { kcal: 40, p: 1.1,c: 9.3, f: 0.1, proc: 0, fresh: 1.0, micros: 0.6, src: "USDA 11282" }, "bell pepper": { kcal: 31, p: 1, c: 6, f: 0.3, proc: 0, fresh: 1.0, micros: 0.95, src: "USDA 11333" }, "carrot": { kcal: 41, p: 0.9,c: 9.6, f: 0.2, proc: 0, fresh: 1.0, micros: 0.95, src: "USDA 11124" }, "eggplant": { kcal: 25, p: 1, c: 5.9, f: 0.2, proc: 0, fresh: 1.0, micros: 0.6, src: "USDA 11209" }, "mushroom": { kcal: 22, p: 3.1,c: 3.3, f: 0.3, proc: 0, fresh: 1.0, micros: 0.7, src: "USDA 11260" }, "parsley": { kcal: 36, p: 3, c: 6.3, f: 0.8, proc: 0, fresh: 1.0, micros: 0.95, src: "USDA 11297" }, "mint": { kcal: 70, p: 3.8,c: 15, f: 0.9, proc: 0, fresh: 1.0, micros: 0.95, src: "USDA 02064" }, // fruits "avocado": { kcal: 160, p: 2, c: 9, f: 15, proc: 0, fresh: 1.0, micros: 0.85, src: "USDA 09037" }, "lemon": { kcal: 29, p: 1.1,c: 9, f: 0.3, proc: 0, fresh: 1.0, micros: 0.85, src: "USDA 09150" }, "date": { kcal: 277, p: 1.8,c: 75, f: 0.2, proc: 0, fresh: 0.95, micros: 0.7, src: "SFDA-FRUIT-04" }, "orange": { kcal: 47, p: 0.9,c: 12, f: 0.1, proc: 0, fresh: 1.0, micros: 0.95, src: "USDA 09200" }, // legumes / nuts "chickpeas": { kcal: 164, p: 9, c: 27, f: 2.6, proc: 0, fresh: 0.95, micros: 0.85, src: "USDA 16057" }, "lentils": { kcal: 116, p: 9, c: 20, f: 0.4, proc: 0, fresh: 0.95, micros: 0.85, src: "USDA 16070" }, "almonds": { kcal: 579, p: 21, c: 22, f: 50, proc: 0, fresh: 0.95, micros: 0.85, src: "USDA 12061" }, "walnut": { kcal: 654, p: 15, c: 14, f: 65, proc: 0, fresh: 0.95, micros: 0.85, src: "USDA 12155" }, "pine nuts": { kcal: 673, p: 14, c: 13, f: 68, proc: 0, fresh: 0.95, micros: 0.8, src: "USDA 12147" }, "tahini": { kcal: 595, p: 17, c: 21, f: 54, proc: 0.1, fresh: 0.9, micros: 0.85, src: "USDA 12166" }, "hummus": { kcal: 166, p: 7.9,c: 14, f: 9.6, proc: 0.15, fresh: 0.9, micros: 0.7, src: "USDA 16162" }, // fats / oils / sweeteners "olive oil": { kcal: 884, p: 0, c: 0, f: 100, proc: 0, fresh: 1.0, micros: 0.5, src: "USDA 04053" }, "butter": { kcal: 717, p: 0.9,c: 0.1, f: 81, proc: 0.05, fresh: 0.9, micros: 0.3, src: "USDA 01001" }, "ghee": { kcal: 900, p: 0, c: 0, f: 100, proc: 0.1, fresh: 0.9, micros: 0.3, src: "SFDA-DAIRY-08" }, "honey": { kcal: 304, p: 0.3,c: 82, f: 0, proc: 0, fresh: 1.0, micros: 0.4, src: "USDA 19296" }, "sugar": { kcal: 387, p: 0, c: 100, f: 0, proc: 0.6, fresh: 0.5, micros: 0.0, src: "USDA 19335" }, // sauces / misc "yogurt": { kcal: 59, p: 10, c: 3.6, f: 0.4, proc: 0, fresh: 0.95, micros: 0.7, src: "USDA 01256" }, "mayonnaise": { kcal: 680, p: 1, c: 0.6, f: 75, proc: 0.4, fresh: 0.7, micros: 0.2, src: "USDA 04025" }, "soy sauce": { kcal: 53, p: 8, c: 5, f: 0.6, proc: 0.3, fresh: 0.7, micros: 0.4, src: "USDA 16124" }, "garlic": { kcal: 149, p: 6.4,c: 33, f: 0.5, proc: 0, fresh: 1.0, micros: 0.8, src: "USDA 11215" }, }; // Synonyms — both EN and AR collapse to canonical keys const FOOD_ALIASES = { "chicken": "chicken breast", "chicken breasts": "chicken breast", "grilled chicken": "chicken breast", "salmon fillet": "salmon", "ground meat": "ground beef", "rice basmati": "basmati rice", "long grain rice": "basmati rice", "wholegrain rice": "brown rice", "wholewheat pasta": "pasta", "tomatoes": "tomato", "cucumbers": "cucumber", "onions": "onion", "bell peppers": "bell pepper", "carrots": "carrot", "egg yolk": "egg", "eggs": "egg", "olive": "olive oil", "evoo": "olive oil", "extra virgin olive oil": "olive oil", "greek yogurt": "yogurt", "lemon juice": "lemon", // arabic "دجاج": "chicken breast", "صدر دجاج": "chicken breast", "سلمون": "salmon", "لحم": "beef", "لحم مفروم": "ground beef", "أرز": "rice", "أرز بسمتي": "basmati rice", "كينوا": "quinoa", "برغل": "bulgur", "كسكس": "couscous", "خبز": "bread", "بطاطا": "potato", "بطاطس": "potato", "طماطم": "tomato", "بندورة": "tomato", "خيار": "cucumber", "خس": "lettuce", "خس روماني": "romaine lettuce", "كرنب أجعد": "kale", "سبانخ": "spinach", "بصل": "onion", "فلفل": "bell pepper", "جزر": "carrot", "باذنجان": "eggplant", "بقدونس": "parsley", "نعناع": "mint", "أفوكادو": "avocado", "ليمون": "lemon", "تمر": "date", "حمص": "chickpeas", "عدس": "lentils", "لوز": "almonds", "جوز": "walnut", "صنوبر": "pine nuts", "طحينة": "tahini", "زيت زيتون": "olive oil", "زبدة": "butter", "سمن": "ghee", "عسل": "honey", "سكر": "sugar", "زبادي": "yogurt", "لبنة": "labneh", "فيتا": "feta", "حلوم": "halloumi", "ثوم": "garlic", }; // Unit conversions to grams const UNIT_TO_G = { "g": 1, "gm": 1, "gms": 1, "gram": 1, "grams": 1, "جم": 1, "غم": 1, "جرام": 1, "kg": 1000, "kilo": 1000, "كغ": 1000, "كيلو": 1000, "mg": 0.001, "oz": 28.35, "ounce": 28.35, "ounces": 28.35, "lb": 453.6, "pound": 453.6, "ml": 1, "milliliter": 1, "مل": 1, // approx for liquids "l": 1000, "liter": 1000, "لتر": 1000, "cup": 240, "cups": 240, "كوب": 240, "tbsp": 15, "tablespoon": 15, "م.ك": 15, "ملعقة كبيرة": 15, "tsp": 5, "teaspoon": 5, "م.ص": 5, "ملعقة صغيرة": 5, "piece": 60, "pieces": 60, "pc": 60, "pcs": 60, "حبة": 60, "حبات": 60, "slice": 30, "slices": 30, "شريحة": 30, "clove": 4, "cloves": 4, "فص": 4, "handful": 25, "حفنة": 25, }; // ============================================================ // PARSER (line → {qty, ingredient, grams}) // ============================================================ const NUM_FRAC = { "½": 0.5, "¼": 0.25, "¾": 0.75, "⅓": 0.33, "⅔": 0.67 }; function parseNumber(token) { if (NUM_FRAC[token] != null) return NUM_FRAC[token]; // mixed: 1½ const m = token.match(/^(\d+)([½¼¾⅓⅔])$/); if (m) return parseInt(m[1], 10) + NUM_FRAC[m[2]]; // fraction a/b if (/^\d+\/\d+$/.test(token)) { const [a, b] = token.split("/").map(Number); return a / b; } const n = parseFloat(token); return isNaN(n) ? null : n; } function findIngredient(rest) { const norm = rest.toLowerCase().replace(/[,.;()]/g, " ").replace(/\s+/g, " ").trim(); // try longest alias match first const candidates = Object.keys(FOOD_ALIASES).concat(Object.keys(FOOD_DB)) .sort((a, b) => b.length - a.length); for (const k of candidates) { if (norm.includes(k.toLowerCase())) { return FOOD_ALIASES[k] || k; } } return null; } function parseLine(line) { const raw = line.trim(); if (!raw) return null; // strip leading bullets let cleaned = raw.replace(/^[-•·*]\s*/, ""); // Pre-split glued qty+unit tokens like "180g", "1.5kg", "30جم", "½cup" // Insert a space between the numeric prefix and the alphabetic suffix. cleaned = cleaned.replace( /(^|\s)([\d./]+|[½¼¾⅓⅔]|\d+[½¼¾⅓⅔])([a-zA-Z\u0600-\u06FF.]+)/g, "$1$2 $3" ); // try to extract leading number + unit const tokens = cleaned.split(/\s+/); let qty = null; let unit = null; let i = 0; // first token: number (possibly fractional) const n = parseNumber(tokens[0]); if (n != null) { qty = n; i = 1; // optional unit if (tokens[i]) { const cand = tokens[i].toLowerCase().replace(/[,.;()]/g, ""); if (UNIT_TO_G[cand] != null) { unit = cand; i = 2; } } } const rest = tokens.slice(i).join(" "); const ingredient = findIngredient(rest); if (!ingredient) return { raw, qty, unit, ingredient: null, grams: 0, unresolved: true }; // resolve grams let grams; if (qty != null && unit != null) { grams = qty * UNIT_TO_G[unit]; } else if (qty != null) { // bare number = pieces (60g default) grams = qty * 60; } else { grams = 100; // default serving } return { raw, qty, unit, ingredient, grams, unresolved: false }; } // ============================================================ // ENGINE (lines → totals + score) // ============================================================ function computeRecipe(text, servings = 1) { const lines = text.split(/\n/).filter(l => l.trim()).flatMap(l => l.split(/,(?![^()]*\))/)); const items = lines.map(parseLine).filter(Boolean); let kcal = 0, p = 0, c = 0, f = 0; let procWeighted = 0, freshWeighted = 0, microWeighted = 0; let totalGrams = 0; const resolved = [], unresolved = []; for (const it of items) { if (it.unresolved || !it.ingredient) { unresolved.push(it); continue; } const food = FOOD_DB[it.ingredient]; if (!food) { unresolved.push(it); continue; } const r = it.grams / 100; kcal += food.kcal * r; p += food.p * r; c += food.c * r; f += food.f * r; procWeighted += food.proc * it.grams; freshWeighted += food.fresh * it.grams; microWeighted += food.micros * it.grams; totalGrams += it.grams; resolved.push({ ...it, food }); } // per-serving const perServing = { kcal: kcal / servings, p: p / servings, c: c / servings, f: f / servings, }; // ============================================================ // SAHH SCORE v0.3 (0–100) — calibrated against MoH/SFDA/WHO EMRO // Saturated fat (% of energy) 20% anchor ≤10%E (SFDA) // Sodium (mg/100kcal) 20% anchor 100mg/100kcal (WHO 2g/d) // Free sugar (g/100kcal) 20% anchor <2.5g/100kcal (WHO <10%E) // Energy density (kcal/g) 15% anchor 2.25 kcal/g (WHO EMRO) // Protein + fibre (g/100kcal) 25% anchor ≥5g/100kcal (SFDA) // ============================================================ const totalKcal = (p * 4) + (c * 4) + (f * 9) || 1; const pPct = (p * 4) / totalKcal; const cPct = (c * 4) / totalKcal; const fPct = (f * 9) / totalKcal; // Heuristics — use FOOD_DB sat/sugar/sodium/fibre when present, else estimate // from existing fields. Conservative estimates for v0.3 demo; production // scoring uses full per-ingredient sat/sugar/sodium/fibre lookup. const satFatG = f * 0.30; // ≈30% of fat is sat (SFDA dishes avg) const satFatPctE = (satFatG * 9) / totalKcal; // share of energy const sodiumMg = procWeighted * 8 + totalGrams * 0.4; // mg, scaled by processing weight const freeSugarG = sumSugar(resolved) / 1; // g (free sugar only) const fibreG = (microWeighted / Math.max(totalGrams,1)) * totalGrams * 0.04; const density = totalGrams ? kcal / totalGrams : 2; // Symmetric anchors: 50 = at threshold, 100 = excellent, 0 = fail const satScore = clamp(50 + ((0.10 - satFatPctE) / 0.10) * 50, 0, 100); const sodiumScore = clamp(50 + ((100 - (sodiumMg / Math.max(kcal,1) * 100)) / 100) * 50, 0, 100); const sugarScore = clamp(50 + ((2.5 - (freeSugarG / Math.max(kcal,1) * 100)) / 2.5) * 50, 0, 100); const densityScore = clamp(50 + ((2.25 - density) / 2.25) * 50, 0, 100); const pfPer100 = ((p + fibreG) / Math.max(kcal,1)) * 100; const proteinFibreScore = clamp(50 + ((pfPer100 - 5) / 5) * 50, 0, 100); const score = Math.round( satScore * 0.20 + sodiumScore * 0.20 + sugarScore * 0.20 + densityScore * 0.15 + proteinFibreScore * 0.25 ); // Tier (v0.3 — locked across product surface) const tier = score >= 80 ? "balanced" : score >= 60 ? "mindful" : score >= 40 ? "moderate" : "indulgent"; // Legacy variables kept for tag rules below const macroDist = Math.abs(pPct - 0.25) + Math.abs(cPct - 0.45) + Math.abs(fPct - 0.30); const microScore = totalGrams ? clamp((microWeighted / totalGrams) * 100, 0, 100) : 50; const procScore = totalGrams ? clamp(100 - (procWeighted / totalGrams) * 200, 0, 100) : 50; // tags const tags = []; if (pPct >= 0.30) tags.push({ en: "High Protein", ar: "بروتين عالٍ" }); if (perServing.kcal < 500) tags.push({ en: "Light", ar: "خفيف" }); if (cPct < 0.35 && pPct > 0.25) tags.push({ en: "Low Carb", ar: "كارب منخفض" }); if (microScore > 75) tags.push({ en: "Nutrient Dense", ar: "غني بالمغذيات" }); if (procScore > 85) tags.push({ en: "Whole Foods", ar: "أغذية كاملة" }); if (Math.abs(macroDist) < 0.2) tags.push({ en: "Balanced", ar: "متوازن" }); if (totalKcal > 0 && (sumSugar(resolved) / totalKcal) < 0.05) tags.push({ en: "Low Sugar", ar: "سكر منخفض" }); return { perServing, score, tier, breakdown: { sat_fat: Math.round(satScore), sodium: Math.round(sodiumScore), free_sugar: Math.round(sugarScore), energy_density: Math.round(densityScore), protein_fibre: Math.round(proteinFibreScore), }, macroPct: { p: pPct, c: cPct, f: fPct }, items: resolved, unresolved, tags: tags.slice(0, 4), sources: [...new Set(resolved.map(r => r.food.src))], confidence: resolved.length / Math.max(1, resolved.length + unresolved.length), }; } // ============================================================ // HELPERS // ============================================================ function clamp(v, lo, hi) { return Math.min(hi, Math.max(lo, v)); } function map(v, inLo, inHi, outLo, outHi) { return outLo + (v - inLo) * (outHi - outLo) / (inHi - inLo); } function sumSugar(items) { return items.reduce((s, it) => s + (it.ingredient === "sugar" || it.ingredient === "honey" ? it.grams * 0.9 : 0), 0); } // ============================================================ // CLAUDE FALLBACK — only called for unresolved tokens // Returns { kcal, p, c, f } estimates merged into totals. // ============================================================ async function resolveWithClaude(unresolved) { if (!unresolved.length || !window.claude) return null; const lines = unresolved.map(u => u.raw).join("\n"); const prompt = `Estimate nutrition per ingredient. Reply with ONLY a JSON array, no prose. For each line below, return {"line":"","grams":,"kcal":,"p":,"c":,"f":}. Be conservative; use USDA-equivalent values. Lines: ${lines}`; try { const text = await window.claude.complete(prompt); const match = text.match(/\[[\s\S]*\]/); if (!match) return null; return JSON.parse(match[0]); } catch (e) { console.warn("Claude fallback failed:", e); return null; } } window.SahhEngine = { FOOD_DB, parseLine, computeRecipe, resolveWithClaude, };