Content engine: posts that structurally cannot lie
PHASE 0 — contentEngine makes Truth Law structural, not careful. Copy is
token-substituted and an unbacked {token} REFUSES to render -- there is no
code path that produces a plausible default. The fact contract is asserted
before any string is built. Card and copy render from ONE fact object, so
a caption and a card cannot disagree. No live model writes factual claims:
the voice is in the template, the facts are pulled, and the voice-polish
port is deliberately unwired, because an LLM that can rewrite a sentence
can rewrite a number.
18 tests carry the proof. The one that matters most: ZERO IS PRESENT.
"0 cleared B+" is our most honest possible post, and treating 0 as missing
would be the Number(null)===0 breach wearing its opposite coat -- it would
silently delete exactly the post the brand is built on.
PHASE 1 — three templates, generating real posts from tonight's data:
hot hitters off the repaired full-season log, the honesty flex off the
real servedGrade distribution (2,140 graded / 70 cleared B+ / 42% not
separable / A unissuable), and streaks verified from settled outcomes only.
THE ENGINE CAUGHT A BUG IN ITSELF, and it is the sharpest lesson here. The
first run published "No hitter is meaningfully hot tonight -- we could
dress up a middling week as a streak. We don't." That was FALSE: the
box-score cache spans only the settled window, every player had under 20
games, and the pool was empty. A broken pull was publishing as considered
editorial judgement -- the fourth appearance of this class tonight and the
first where our OWN HONESTY COPY was the disguise.
Fixed structurally rather than by patching the number: an absent() variant
may now DECLINE to speak, and the template separates "no candidates at
all" (SKIP with a reason) from "candidates judged, none hot" (honest
absence). Both locked by test. Source corrected to mlbStatsAdapter.fullLog,
the same log the repaired champion reads.
PHASE 2 — cardRenderer emits SVG rather than canvas: it is text, so it
diffs in review and its numbers are greppable, which matters when the
whole claim is that the numbers are real. VYND white + R green, slashed-Y,
scanlines, mono. The card never formats its own facts -- every string
arrives pre-rendered and gate-checked.
PHASE 3 — scripts/generate-content.js writes copy + card per template to
.content-out/<date>/. Template N+1 is a registry entry: requires, pull,
copy, card, absent. Queued as stubs, not built: hot takes, daily reads,
"grades we DIDN'T give", cross-sport streak variants (the streak template
is already sport-agnostic -- settled outcomes and a noun).
FULLY ISOLATED: read-only on every source, zero writes to serving, model
or ledger tables. Serving fingerprint verified unchanged. The accrual clock
is untouched at 0 eligible dates.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01W1sivYNqY2TS5ftykmHBU9
This commit is contained in:
@@ -0,0 +1,83 @@
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'use strict';
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/**
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* cardRenderer — one card engine, per-template layouts.
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*
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* SVG rather than canvas: it is text, so it has no native dependency, it
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* diffs in review, and the numbers inside it are greppable — which matters when
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* the whole claim is that the numbers are real. A card whose contents cannot be
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* inspected without opening an image is a bad fit for a Truth-Law product.
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*
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* The card never formats its own facts. Every string arrives already rendered
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* and already gate-checked by contentEngine, so a caption and a card physically
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* cannot disagree.
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*/
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const BRAND = Object.freeze({
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bg: '#05070A',
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panel: '#0A0E14',
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line: '#1A222E',
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green: '#00D4A0', // the R
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white: '#FFFFFF', // VYND
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dim: '#6B7A8D',
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amber: '#FFB347',
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mono: "ui-monospace, 'JetBrains Mono', 'SFMono-Regular', Menlo, monospace",
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});
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const W = 1080;
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const H = 1350;
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const esc = (s) => String(s)
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.replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>')
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.replace(/"/g, '"');
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/** The slashed-Y wordmark: VYND white, R green. */
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function wordmark(x, y, size = 34) {
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return `
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<g font-family="${BRAND.mono}" font-size="${size}" font-weight="800" letter-spacing="${size * 0.09}">
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<text x="${x}" y="${y}" fill="${BRAND.white}">VYND</text>
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<text x="${x + size * 2.92}" y="${y}" fill="${BRAND.green}">R</text>
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<line x1="${x + size * 1.02}" y1="${y - size * 0.78}" x2="${x + size * 1.42}" y2="${y + size * 0.22}"
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stroke="${BRAND.green}" stroke-width="${Math.max(2, size * 0.07)}" opacity=".85"/>
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</g>`;
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}
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/**
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* Render a card model to SVG.
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* @param {object} card { kind, title, subtitle, lines[], footer }
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*/
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function toSvg(card = {}) {
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const lines = card.lines || [];
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let y = 300;
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const body = lines.map((l) => {
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const text = typeof l === 'string' ? l : l.text;
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const style = (typeof l === 'object' && l.style) || 'body';
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let out = '';
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if (style === 'rule') {
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out = `<line x1="72" y1="${y - 18}" x2="${W - 72}" y2="${y - 18}" stroke="${BRAND.line}" stroke-width="1"/>`;
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y += 26;
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return out;
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}
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const size = style === 'lead' ? 46 : style === 'stat' ? 40 : 30;
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const fill = style === 'stat' ? BRAND.green : style === 'dim' ? BRAND.dim : BRAND.white;
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const weight = style === 'body' ? 500 : 800;
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out = `<text x="72" y="${y}" font-family="${BRAND.mono}" font-size="${size}" font-weight="${weight}" fill="${fill}">${esc(text)}</text>`;
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y += size + (style === 'lead' ? 26 : 18);
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return out;
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}).join('\n');
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return `<svg xmlns="http://www.w3.org/2000/svg" width="${W}" height="${H}" viewBox="0 0 ${W} ${H}">
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<rect width="${W}" height="${H}" fill="${BRAND.bg}"/>
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<rect x="40" y="40" width="${W - 80}" height="${H - 80}" fill="${BRAND.panel}" stroke="${BRAND.line}"/>
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${Array.from({ length: 26 }, (_, i) => `<line x1="40" y1="${52 * i + 40}" x2="${W - 40}" y2="${52 * i + 40}" stroke="${BRAND.white}" stroke-width="1" opacity=".02"/>`).join('')}
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${wordmark(72, 128)}
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${card.title ? `<text x="72" y="212" font-family="${BRAND.mono}" font-size="54" font-weight="800" fill="${BRAND.white}" letter-spacing="1">${esc(card.title)}</text>` : ''}
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${card.subtitle ? `<text x="72" y="256" font-family="${BRAND.mono}" font-size="26" font-weight="600" fill="${BRAND.dim}" letter-spacing="2">${esc(card.subtitle)}</text>` : ''}
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<line x1="72" y1="272" x2="${W - 72}" y2="272" stroke="${BRAND.green}" stroke-width="2" opacity=".55"/>
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${body}
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<text x="72" y="${H - 96}" font-family="${BRAND.mono}" font-size="22" font-weight="600" fill="${BRAND.dim}">${esc(card.footer || 'Every number here is measured. Nothing is projected.')}</text>
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<text x="72" y="${H - 62}" font-family="${BRAND.mono}" font-size="20" font-weight="500" fill="${BRAND.line}">vyndr · built by Kevon Butler · Detroit</text>
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</svg>`;
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}
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module.exports = { toSvg, BRAND, W, H };
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@@ -0,0 +1,172 @@
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'use strict';
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/**
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* contentEngine — posts that structurally cannot lie.
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*
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* The top-of-funnel is a content flywheel, and the thing that makes it VYNDR's
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* rather than anyone's is that the numbers in it are real. That is easy to
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* promise and hard to keep, because the failure mode is not a person choosing to
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* fabricate — it is a template with a hardcoded adjective, or a field that came
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* back null and rendered as "0", or a caption drifting from the card beside it.
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*
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* So the honesty is enforced by construction rather than by care:
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*
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* 1. COPY IS TOKEN-SUBSTITUTED. Every factual claim in a template is a
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* `{token}` resolved against pulled facts. A token with no backing fact
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* REFUSES to render — it cannot fall back to a plausible default, because
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* there is no code path that produces one.
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* 2. THE FACT CONTRACT IS ASSERTED FIRST. A template declares the fields it
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* needs; the engine checks them before any string is built. A missing field
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* means SKIP or an honest-absence variant, never invention.
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* 3. CARD AND COPY SHARE ONE FACT OBJECT. They cannot diverge, because there
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* is only one set of numbers and both read it.
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*
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* NO LIVE MODEL WRITES FACTUAL CLAIMS. The voice lives in the template; the
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* facts are pulled. A voice-polish port is reserved for later and is not wired
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* here — an LLM that can rewrite a sentence can rewrite a number.
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*
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* READ-ONLY. This engine touches no serving or forecast table. It has zero
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* effect on the repaired-champion accrual clock.
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*/
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const { knownNumber } = require('../../utils/known');
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/** Resolve `a.b.c` against an object; undefined when any hop is missing. */
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function pathValue(obj, path) {
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return String(path).split('.').reduce((o, k) => (o == null ? undefined : o[k]), obj);
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}
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/**
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* A value that may stand as a fact.
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*
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* `null` and `undefined` are absent. Empty string is absent — it renders as a
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* hole in a sentence. Zero and false are PRESENT: "0 props cleared B+" is a real
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* and important claim, and treating 0 as missing is the `Number(null) === 0`
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* breach wearing its opposite coat.
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*/
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function isPresent(v) {
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if (v === null || v === undefined) return false;
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if (typeof v === 'string' && v.trim() === '') return false;
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if (Array.isArray(v) && v.length === 0) return false;
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if (typeof v === 'number' && !Number.isFinite(v)) return false;
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return true;
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}
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const TOKEN = /\{([a-zA-Z0-9_.]+)\}/g;
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/** Every `{token}` in a string. */
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function tokensIn(text) {
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const out = [];
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let m;
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const re = new RegExp(TOKEN);
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while ((m = re.exec(String(text))) !== null) out.push(m[1]);
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return out;
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}
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/**
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* Substitute tokens, refusing on any that is unbacked.
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* @throws when a token has no present fact — the whole point.
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*/
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function render(text, facts) {
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const missing = tokensIn(text).filter((t) => !isPresent(pathValue(facts, t)));
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if (missing.length) {
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throw new Error(`TRUTH LAW: unbacked token(s) ${missing.join(', ')} — refusing to render`);
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}
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return String(text).replace(TOKEN, (_, t) => String(pathValue(facts, t)));
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}
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/** Which contract fields are absent from a pulled fact set. */
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function contractGaps(template, facts) {
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return (template.requires || []).filter((f) => !isPresent(pathValue(facts, f)));
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}
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const registry = new Map();
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/**
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* Register a template.
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*
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* @param {object} t
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* id stable key
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* sport which sport it speaks for
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* requires fact-contract: dotted paths that MUST be present
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* pull async (deps) => facts — the ONLY place data enters
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* copy (facts) => string with {tokens}
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* card (facts) => card model (layout + token strings)
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* absent optional (gaps) => honest "nothing tonight" post
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*/
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function registerTemplate(t) {
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if (!t || !t.id) throw new Error('a template needs an id');
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for (const k of ['requires', 'pull', 'copy', 'card']) {
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if (!t[k]) throw new Error(`template ${t.id} is missing ${k}`);
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}
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registry.set(t.id, t);
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return t;
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}
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const listTemplates = () => [...registry.values()];
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const getTemplate = (id) => registry.get(id) || null;
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/**
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* Generate one post.
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*
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* @returns {object} { ok, id, copy, card, facts, skipped, reason }
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* Never throws on absent data — absence is an outcome, not an error.
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*/
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async function generate(id, deps = {}) {
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const t = registry.get(id);
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if (!t) return { ok: false, id, skipped: true, reason: 'no such template' };
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let facts;
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try {
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facts = await t.pull(deps);
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} catch (e) {
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return { ok: false, id, skipped: true, reason: `pull failed: ${e.message}` };
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}
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// ── THE CONTRACT, BEFORE ANY STRING IS BUILT ──
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const gaps = contractGaps(t, facts || {});
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if (gaps.length) {
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if (typeof t.absent === 'function') {
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const alt = t.absent(gaps, facts || {}) || {};
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// An absence variant may DECLINE to speak. A template that cannot tell
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// "nothing happened" from "nothing was fetched" must not publish the
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// first sentence when the second is true -- honest-absence copy is a
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// perfect hiding place for a broken pull.
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if (alt.skip) return { ok: false, id, skipped: true, reason: alt.skip, gaps };
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return { ok: true, id, honest_absence: true, copy: alt.copy, card: alt.card, facts: facts || {}, gaps };
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}
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return { ok: false, id, skipped: true, reason: `fact-contract gap: ${gaps.join(', ')}`, gaps };
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}
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try {
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const copyRaw = t.copy(facts);
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const copy = render(copyRaw, facts);
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const cardModel = t.card(facts);
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// The card's own strings pass the same gate -- a caption and a card cannot
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// disagree if both are rendered from one fact object under one rule.
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const card = {
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...cardModel,
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lines: (cardModel.lines || []).map((l) => (typeof l === 'string'
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? render(l, facts)
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: { ...l, text: render(l.text, facts) })),
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title: cardModel.title ? render(cardModel.title, facts) : null,
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subtitle: cardModel.subtitle ? render(cardModel.subtitle, facts) : null,
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};
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return { ok: true, id, copy, card, facts };
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} catch (e) {
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// A refusal is a skip, never a degraded post.
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return { ok: false, id, skipped: true, reason: e.message };
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}
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}
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/** Generate every registered template; skips are reported, never hidden. */
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async function generateAll(deps = {}) {
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const out = [];
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for (const t of listTemplates()) out.push(await generate(t.id, deps));
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return out;
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}
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module.exports = {
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registerTemplate, listTemplates, getTemplate, generate, generateAll,
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render, tokensIn, contractGaps, isPresent, pathValue,
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};
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@@ -0,0 +1,73 @@
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'use strict';
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/**
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* TEMPLATE 2 — THE HONESTY FLEX.
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*
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* The differentiator, and the one that would be worthless if it were padded.
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* It publishes the REAL grade distribution: how many props were graded, how few
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* cleared the ceiling, and the fact that A is unissuable because no band of this
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* model has ever earned one.
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*
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* Every competitor's card is all A's. Ours says most of tonight is a base-rate
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* read — and that claim is only impressive if it is exactly true, so the numbers
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* come from servedGrade's own bands rather than from a marketing sentence.
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*/
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const { knownNumber } = require('../../../utils/known');
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module.exports = {
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id: 'honesty_flex',
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sport: 'mlb',
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label: 'The Honesty Flex',
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requires: ['graded', 'ceiling_letter', 'ceiling_realized', 'base_rate', 'date'],
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async pull(deps) {
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const g = await deps.gradeDistribution(); // injected, read-only
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const sg = deps.servedGrade || require('../../model/servedGrade');
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const total = knownNumber(g && g.total);
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const top = (g && g.by_letter && (g.by_letter['B+'] || 0)) || 0;
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const flat = (g && g.not_separable) || 0;
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const ceiling = sg.BANDS[0];
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return {
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date: deps.date,
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graded: total,
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top_count: top,
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top_pct: total ? Math.round((top / total) * 100) : null,
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flat_count: flat,
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flat_pct: total ? Math.round((flat / total) * 100) : null,
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ceiling_letter: ceiling.letter,
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ceiling_realized: Math.round(ceiling.realized * 100),
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base_rate: Math.round(sg.BASE_RATE * 100),
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unissuable: sg.UNISSUABLE.join(', '),
|
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};
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},
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copy: () => `WE GRADED {graded} PROPS TONIGHT. {top_count} CLEARED {ceiling_letter}.
|
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That's {top_pct}%. The other {flat_pct}% we can't separate from the baseline, and we say so on the card instead of calling them leans.
|
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Our ceiling is {ceiling_letter} — those reads land about {ceiling_realized}% against a {base_rate}% baseline. We do not issue {unissuable}. No band of this model has ever hit at a rate that would justify one.
|
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|
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Everybody else's card is all A's. Ask them what their A actually hits.`,
|
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card: () => ({
|
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kind: 'flex',
|
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title: 'TONIGHT, HONESTLY',
|
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subtitle: '{date}',
|
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lines: [
|
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{ text: '{graded} graded', style: 'lead' },
|
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{ text: '{top_count} cleared {ceiling_letter} — {top_pct}%', style: 'stat' },
|
||||
{ text: '{flat_pct}% we cannot separate from baseline', style: 'dim' },
|
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{ text: '', style: 'rule' },
|
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{ text: 'Ceiling: {ceiling_letter} · lands {ceiling_realized}%', style: 'body' },
|
||||
{ text: 'Baseline: {base_rate}%', style: 'body' },
|
||||
{ text: 'We do not issue {unissuable}.', style: 'body' },
|
||||
],
|
||||
footer: 'Grades are earned from realized outcomes, not issued on confidence.',
|
||||
}),
|
||||
|
||||
absent: () => ({
|
||||
copy: 'No slate graded tonight. Nothing to show, so nothing shown.',
|
||||
card: { kind: 'absence', title: 'NO SLATE TONIGHT', subtitle: 'NOTHING TO PAD', lines: [{ text: 'No props graded. An empty board is an honest board.', style: 'body' }], footer: 'We post the count even when the count is zero.' },
|
||||
}),
|
||||
};
|
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@@ -0,0 +1,94 @@
|
||||
'use strict';
|
||||
|
||||
/**
|
||||
* TEMPLATE 1 — HOT HITTERS.
|
||||
*
|
||||
* Reads the REPAIRED full-season log, not a ten-game slice. "Hot" here means a
|
||||
* recent rate measured against that hitter's own season rate — which is only a
|
||||
* meaningful comparison now that the season rate is a season.
|
||||
*/
|
||||
|
||||
const { knownNumber } = require('../../../utils/known');
|
||||
|
||||
/** A hitter must have this much history before we call him anything. */
|
||||
const MIN_SEASON_GAMES = 20;
|
||||
const RECENT = 10;
|
||||
|
||||
module.exports = {
|
||||
id: 'hot_hitters',
|
||||
sport: 'mlb',
|
||||
label: 'Hot Hitters',
|
||||
requires: ['count', 'hitters', 'window', 'date'],
|
||||
|
||||
async pull(deps) {
|
||||
const rows = await deps.hitterForm(); // injected, read-only
|
||||
// ── EMPTY POOL IS NOT AN HONEST ABSENCE ────────────────────────────────
|
||||
// The first run of this template emitted "no hitter is meaningfully hot"
|
||||
// while the real cause was a source holding fewer than 20 games for EVERY
|
||||
// player. That reads as a considered editorial judgement and is actually a
|
||||
// broken pull -- the exact failure class that has bitten this codebase four
|
||||
// times tonight, here wearing the costume of our own honesty copy.
|
||||
//
|
||||
// So the two are separated: no candidates at all is a SKIP with a reason;
|
||||
// candidates present but none hot is the honest absence.
|
||||
const candidates = (rows || []).length;
|
||||
const usable = (rows || []).filter((r) =>
|
||||
knownNumber(r.season_games) !== null && r.season_games >= MIN_SEASON_GAMES
|
||||
&& knownNumber(r.recent_rate) !== null && knownNumber(r.season_rate) !== null);
|
||||
const hot = usable
|
||||
.map((r) => ({ ...r, lift: r.recent_rate - r.season_rate }))
|
||||
.filter((r) => r.lift > 0)
|
||||
.sort((a, b) => b.lift - a.lift)
|
||||
.slice(0, 5);
|
||||
return {
|
||||
date: deps.date,
|
||||
window: RECENT,
|
||||
candidates,
|
||||
qualified: usable.length,
|
||||
count: hot.length || null, // zero hot hitters is an ABSENT list, not "0 hot hitters"
|
||||
hitters: hot.length ? hot : null,
|
||||
list: hot.map((h, i) =>
|
||||
`${i + 1}. ${h.name} — ${Math.round(h.recent_rate * 100)}% last ${RECENT}, ${Math.round(h.season_rate * 100)}% season`).join('\n'),
|
||||
top_name: hot[0] ? hot[0].name : null,
|
||||
top_recent: hot[0] ? Math.round(hot[0].recent_rate * 100) : null,
|
||||
top_season: hot[0] ? Math.round(hot[0].season_rate * 100) : null,
|
||||
};
|
||||
},
|
||||
|
||||
copy: () => `WHO'S ACTUALLY HOT — {date}
|
||||
|
||||
{top_name} is hitting {top_recent}% over his last {window}. His season number is {top_season}%.
|
||||
That gap is the whole point. Everybody else is guessing at it.
|
||||
|
||||
{list}
|
||||
|
||||
Measured off full season logs, not a ten-game window that flatters whoever ran hot last week.`,
|
||||
|
||||
card: () => ({
|
||||
kind: 'list',
|
||||
title: "WHO'S ACTUALLY HOT",
|
||||
subtitle: 'LAST {window} vs SEASON · {date}',
|
||||
lines: [
|
||||
{ text: '{top_name}', style: 'lead' },
|
||||
{ text: '{top_recent}% last {window} · {top_season}% season', style: 'stat' },
|
||||
{ text: '', style: 'rule' },
|
||||
{ text: '{list}', style: 'body' },
|
||||
],
|
||||
footer: 'Rates measured from full season game logs.',
|
||||
}),
|
||||
|
||||
absent: (gaps, facts) => {
|
||||
// Only speak if there was actually a pool to judge.
|
||||
if (!facts || !facts.qualified) {
|
||||
return {
|
||||
copy: null,
|
||||
card: null,
|
||||
skip: `no qualified hitters in the pool (candidates=${(facts && facts.candidates) || 0}, qualified=${(facts && facts.qualified) || 0}) — source problem, not a quiet night`,
|
||||
};
|
||||
}
|
||||
return {
|
||||
copy: "No hitter is meaningfully hot tonight.\n\nWe could dress up a middling week as a streak. We don't.",
|
||||
card: { kind: 'absence', title: 'NOTHING HOT TONIGHT', subtitle: 'AND WE WILL SAY SO', lines: [{ text: 'No hitter cleared his own season rate by enough to name.', style: 'body' }], footer: 'An empty list is a real answer.' },
|
||||
};
|
||||
},
|
||||
};
|
||||
@@ -0,0 +1,65 @@
|
||||
'use strict';
|
||||
|
||||
/**
|
||||
* TEMPLATE 3 — STREAK LIST.
|
||||
*
|
||||
* A streak is only a streak if every game in it settled. This reads the ledger's
|
||||
* SETTLED outcomes, so a run cannot be extended by a game that is still pending
|
||||
* or was voided for a DNP — the two ways a streak list quietly inflates.
|
||||
*
|
||||
* The structure is sport-agnostic: it takes settled outcome rows and a noun.
|
||||
* MLB hit streaks today; the same shape carries TD streaks or made-three streaks
|
||||
* the moment those sports have settled outcomes.
|
||||
*/
|
||||
|
||||
const MIN_STREAK = 3;
|
||||
|
||||
module.exports = {
|
||||
id: 'streak_list',
|
||||
sport: 'mlb',
|
||||
label: 'Active Streaks',
|
||||
requires: ['streaks', 'count', 'noun', 'date'],
|
||||
|
||||
async pull(deps) {
|
||||
const rows = await deps.settledStreaks(); // injected, read-only
|
||||
const live = (rows || [])
|
||||
.filter((r) => Number(r.streak) >= MIN_STREAK && r.verified_from_settled === true)
|
||||
.sort((a, b) => b.streak - a.streak)
|
||||
.slice(0, 6);
|
||||
return {
|
||||
date: deps.date,
|
||||
noun: deps.noun || 'game hit streak',
|
||||
count: live.length || null,
|
||||
streaks: live.length ? live : null,
|
||||
list: live.map((s) => `${s.name} — ${s.streak} straight`).join('\n'),
|
||||
top_name: live[0] ? live[0].name : null,
|
||||
top_streak: live[0] ? live[0].streak : null,
|
||||
};
|
||||
},
|
||||
|
||||
copy: () => `ACTIVE STREAKS — {date}
|
||||
|
||||
{top_name} has a {top_streak}-{noun}. Live, verified off settled results only.
|
||||
|
||||
{list}
|
||||
|
||||
Every game in these ran to a final. We don't count a pending night to make a number look better.`,
|
||||
|
||||
card: () => ({
|
||||
kind: 'list',
|
||||
title: 'ACTIVE STREAKS',
|
||||
subtitle: 'VERIFIED FROM SETTLED RESULTS · {date}',
|
||||
lines: [
|
||||
{ text: '{top_name}', style: 'lead' },
|
||||
{ text: '{top_streak} straight', style: 'stat' },
|
||||
{ text: '', style: 'rule' },
|
||||
{ text: '{list}', style: 'body' },
|
||||
],
|
||||
footer: 'Settled games only. Pending and voided nights do not count.',
|
||||
}),
|
||||
|
||||
absent: () => ({
|
||||
copy: 'No live streaks worth naming tonight.\n\nWe could lower the bar to three-of-four. We keep the bar.',
|
||||
card: { kind: 'absence', title: 'NO LIVE STREAKS', subtitle: 'THE BAR STAYS WHERE IT IS', lines: [{ text: 'Nothing running long enough to name.', style: 'body' }], footer: 'We do not lower a threshold to fill a card.' },
|
||||
}),
|
||||
};
|
||||
Reference in New Issue
Block a user