70 lines
2.2 KiB
JavaScript
70 lines
2.2 KiB
JavaScript
// Browser-safe. THE ONLY implementation of the worksheet's time-ledger math.
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// Mirrors manual-roast-planner.html's worksheet box 6 (lines 1-9, totals A/C/D)
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// and box 7 (the four sanity checks) exactly. Imported by both server and browser.
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import { parseDuration, parseRangeMidpoint } from "./time.js?v=20260730-release2";
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import { YELLOW_RATIO, SANITY_BANDS } from "./reference-data.js?v=20260730-release2";
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/**
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* @param {import("./fields.js").Plan} plan
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* @returns ledger result — every time value in seconds, null when not computable.
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*/
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export function computeLedger(plan) {
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const f = plan.fields ?? {};
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const isBlend = f["2.1"] === "blend";
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const warnings = [];
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const l1 = parseRangeMidpoint(isBlend ? f["2.4"] : f["1.4"]);
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const l2 = parseDuration(f["1.6"]) ?? 0;
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const l3 = parseDuration(f["5.6"]) ?? 0;
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const l4 = parseDuration(f["6.4"]) ?? 0;
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const A = l1 === null ? null : l1 + l2 + l3 + l4;
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const yellow = A === null ? null : Math.round(A * YELLOW_RATIO);
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const maillard = A === null ? null : A - yellow;
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const l7 = parseRangeMidpoint(f["4.3"]);
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const l8 = parseDuration(isBlend ? f["2.5"] : f["3.2"]) ?? 0;
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const l9 = parseDuration(f["1.7"]) ?? 0;
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const C = l7 === null ? null : l7 + l8 + l9; // rows 5 and 6 (yellow/Maillard) are NEVER summed here
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const D = A === null || C === null ? null : A + C;
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if (l1 === null) warnings.push("No cultivar/blend anchor (field 1.4 or 2.4) — first crack cannot be computed.");
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if (l7 === null) warnings.push("No development base (field 4.3) — development cannot be computed.");
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const pct = (part) => (D && D > 0 && part !== null ? (part / D) * 100 : null);
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const checks = {
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drying: passCheck(pct(yellow), SANITY_BANDS.drying),
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maillard: passCheck(pct(maillard), SANITY_BANDS.maillard),
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dtr: passCheck(pct(C), SANITY_BANDS.dtr),
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ceiling: {
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valueS: C,
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maxS: SANITY_BANDS.ceilingS,
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pass: C === null ? null : C < SANITY_BANDS.ceilingS,
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},
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};
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return {
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isBlend,
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lines: { l1, l2, l3, l4, l7, l8, l9 },
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A,
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yellow,
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maillard,
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C,
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D,
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checks,
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warnings,
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};
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}
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function passCheck(pct, band) {
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return {
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pct,
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lo: band.lo,
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hi: band.hi,
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pass: pct === null ? null : pct >= band.lo && pct <= band.hi,
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};
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}
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