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// SPDX-License-Identifier: Apache-2.0
/**
* @module Aggregator/ArticleMeta
* @description Deterministic emitter for `article-meta.json` — a small
* structured sidecar written next to `article.md` in every analysis run
* directory. Consumers (HTML SEO/structured data, news indexes, RSS) read
* this file instead of re-parsing the article body.
*
* The file is a pure function of the run inputs:
* - `manifest.json` → article type, date, run id, gate result
* - `executive-brief.md`/`synthesis-summary.md` → top finding (lead)
* - `intelligence/synthesis-summary.md` → key takeaways (3–7 bullets)
* - `risk-scoring/risk-matrix.md` (if present) → top risks
* - `intelligence/parliamentary-calendar-projection.md` /
* `extended/forward-indicators.md` → key dates / what to watch
* - `intelligence/economic-context.md` → IMF / WorldBank macro hook
*
* Same artifact bytes in → same `article-meta.json` bytes out (verified by
* the determinism test).
*/
import fs from 'fs';
import path from 'path';
import {
extractExecutiveLead,
extractLeadParagraph,
trimToLeadSentence,
} from './lead-extractor.js';
import {
buildKeyTakeaways as _buildKeyTakeaways,
jaccardSimilarity,
extractStrongBullets,
harvestCandidates,
MAX_TAKEAWAYS,
MIN_TAKEAWAYS,
} from './key-takeaways.js';
/** Shape of `article-meta.json`. */
export interface ArticleMeta {
/** ISO date of the run (`YYYY-MM-DD`). */
readonly date: string;
/** Article type slug (e.g. `breaking`). */
readonly articleType: string;
/** Stable run identifier from the manifest. */
readonly runId: string;
/** Latest non-PENDING gate result. */
readonly gateResult: string;
/** Article slug used by the news pages (`<date>-<type>[-<suffix>]`). */
readonly slug: string;
/** Run-relative path of the canonical `article.md`. */
readonly articlePath: string;
/** One-sentence executive lead — the strongest finding, distilled. */
readonly topFinding: string;
/** 3–7 deterministic key takeaways harvested from synthesis-summary. */
readonly keyTakeaways: readonly string[];
/** Top political risks (artifact-driven, may be empty). */
readonly topRisks: readonly string[];
/** Key dated triggers / "what to watch" items. */
readonly keyDates: readonly string[];
/** Key actors / political groups identified by the artifacts. */
readonly keyActors: readonly string[];
/** Optional IMF / WorldBank macro hook surfaced as a sidebar callout. */
readonly macroContext: string;
/**
* Run-relative paths of every artifact whose content fed into this meta
* record — emitted so the HTML SEO layer can build `isBasedOn` arrays
* without re-walking the run directory.
*/
readonly sources: readonly string[];
}
/** Options for {@link buildArticleMeta}. */
export interface BuildArticleMetaOptions {
/** Absolute path to the analysis run directory. */
readonly runDir: string;
/** Absolute path to the repository root (used for repo-relative paths). */
readonly repoRoot: string;
/** ISO date of the run (`YYYY-MM-DD`). */
readonly date: string;
/** Article type slug. */
readonly articleType: string;
/** Stable run identifier from the manifest. */
readonly runId: string;
/** Latest non-PENDING gate result. */
readonly gateResult: string;
/** Article slug used by the news pages. */
readonly slug: string;
}
/** Hard cap on how many entries each list field carries. */
const MAX_LIST_ENTRIES = 8;
/** Regex matching a YYYY-MM-DD date, month-year, or Qn YYYY pattern. */
const DATE_TRIGGER_RE =
/\b(\d{4}-\d{2}-\d{2}|Q[1-4]\s+\d{4}|(?:Jan(?:uary)?|Feb(?:ruary)?|Mar(?:ch)?|Apr(?:il)?|May|Jun(?:e)?|Jul(?:y)?|Aug(?:ust)?|Sep(?:tember)?|Oct(?:ober)?|Nov(?:ember)?|Dec(?:ember)?)\s+\d{4})\b/i;
/** Headings in economic-context artifacts that contain macro prose. */
const MACRO_PREFERRED_HEADINGS = [
'judgement',
'judgment',
'imf weo',
'imf baseline',
'salient economic',
'macro',
'eurozone macro',
];
/**
* De-duplicate candidates using Jaccard similarity, capped at `maxItems`.
* Unlike `dedupeTakeaways` from key-takeaways.ts, this helper does
* not impose the `MAX_TAKEAWAYS` ceiling — callers provide their own cap.
*
* @param candidates - Ordered list of bullet body strings
* @param maxItems - Maximum number of de-duplicated items to return
* @returns De-duplicated list capped at `maxItems`
*/
function dedupeItems(candidates: readonly string[], maxItems: number): string[] {
const THRESHOLD = 0.7;
const out: string[] = [];
for (const candidate of candidates) {
Iif (out.length >= maxItems) break;
const isDuplicate = out.some((existing) => jaccardSimilarity(existing, candidate) >= THRESHOLD);
Eif (!isDuplicate) out.push(candidate);
}
return out;
}
/**
* Extract a macro-context lead from an economic-context artifact, targeting
* IMF / Judgement headings. Falls back to the first prose paragraph after
* skipping metadata-style preamble lines.
*
* @param markdown - Raw artifact Markdown
* @returns Trimmed lead sentence, or `''`
*/
function extractMacroLeadParagraph(markdown: string): string {
// Try to find a macro-specific preferred section first.
const lines = markdown.split(/\r?\n/);
let heading = '';
let buffer: string[] = [];
let inFence = false;
const tryExtract = (buf: string[]): string => {
for (const rawLine of buf) {
const trimmed = (rawLine ?? '').trim();
Iif (trimmed === '' || /^[-*+]\s+/.test(trimmed) || /^\d+\.\s+/.test(trimmed)) continue;
Iif (/^(>|<|!?\[)/.test(trimmed)) continue;
Iif (/^\*\*\s*[A-Za-z][^*]+:\*\*/.test(trimmed)) continue;
Iif (/^\|/.test(trimmed)) continue; // skip table rows
Iif (/^-{2,}$/.test(trimmed)) continue; // skip horizontal rules
return trimmed;
}
return '';
};
for (const rawLine of lines) {
const line = rawLine ?? '';
Iif (/^```/.test(line)) {
inFence = !inFence;
continue;
}
Iif (inFence) continue;
const headingMatch = /^(#{1,6})\s+(.*)$/.exec(line);
if (headingMatch) {
const prev = tryExtract(buffer);
Iif (
prev &&
MACRO_PREFERRED_HEADINGS.some((h) =>
heading
.toLowerCase()
.replace(/[^\p{L}\p{N}\s]+/gu, ' ')
.trim()
.includes(h)
)
) {
return prev;
}
heading = (headingMatch[2] ?? '').trim();
buffer = [];
continue;
}
buffer.push(line);
}
// Flush last section.
const lastPrev = tryExtract(buffer);
Eif (
lastPrev &&
MACRO_PREFERRED_HEADINGS.some((h) =>
heading
.toLowerCase()
.replace(/[^\p{L}\p{N}\s]+/gu, ' ')
.trim()
.includes(h)
)
) {
return lastPrev;
}
// Final fallback: use the generic extractor result (lazy, avoids double parse in the common path).
return extractLeadParagraph(markdown);
}
/**
* Mine top political risks from `risk-scoring/risk-matrix.md` (or its
* historic variants under the same directory). Falls back to the first
* bullets in `risk-scoring/quantitative-swot.md` when the matrix is
* absent. Returns at most {@link MAX_LIST_ENTRIES} bullets.
*
* @param runDir - Absolute path to the analysis run directory
* @returns Ordered list of risk bullet bodies
*/
export function extractTopRisks(runDir: string): string[] {
const sources = [
'risk-scoring/risk-matrix.md',
'risk-scoring/political-risk.md',
'risk-scoring/quantitative-swot.md',
];
for (const rel of sources) {
const abs = path.join(runDir, rel);
if (!fs.existsSync(abs)) continue;
const markdown = fs.readFileSync(abs, 'utf8');
const bullets = extractStrongBullets(markdown).slice(0, MAX_LIST_ENTRIES);
Eif (bullets.length > 0) return bullets;
}
return [];
}
/**
* Mine forward-looking dated items from
* `intelligence/parliamentary-calendar-projection.md` and
* `extended/forward-indicators.md`. Returns at most
* {@link MAX_LIST_ENTRIES} bullets, de-duplicated across the two sources.
*
* @param runDir - Absolute path to the analysis run directory
* @returns Ordered list of dated trigger bullet bodies
*/
export function extractKeyDates(runDir: string): string[] {
const sources = [
'intelligence/parliamentary-calendar-projection.md',
'extended/forward-indicators.md',
'intelligence/legislative-pipeline-forecast.md',
'intelligence/scenario-forecast.md',
];
const candidates = harvestCandidates(runDir, sources);
// Filter for bullets that contain an explicit date trigger, then dedupe.
const dated = candidates.filter((t) => DATE_TRIGGER_RE.test(t.body)).map((t) => t.body);
return dedupeItems(dated, MAX_LIST_ENTRIES);
}
/**
* Mine key actors / political groups from
* `classification/actor-mapping.md` and `intelligence/stakeholder-map.md`.
* Falls through to coalition-dynamics when the canonical actor map is
* missing. Returns at most {@link MAX_LIST_ENTRIES} bullets.
*
* @param runDir - Absolute path to the analysis run directory
* @returns Ordered list of actor bullet bodies
*/
export function extractKeyActors(runDir: string): string[] {
const sources = [
'classification/actor-mapping.md',
'intelligence/stakeholder-map.md',
'intelligence/coalition-dynamics.md',
];
for (const rel of sources) {
const abs = path.join(runDir, rel);
if (!fs.existsSync(abs)) continue;
const markdown = fs.readFileSync(abs, 'utf8');
const bullets = extractStrongBullets(markdown).slice(0, MAX_LIST_ENTRIES);
Eif (bullets.length > 0) return bullets;
}
return [];
}
/**
* Resolve a one-line IMF / WorldBank macro context callout from
* `intelligence/economic-context.md`. Returns the trimmed lead sentence
* of the artifact, or `''` when the artifact is missing.
*
* @param runDir - Absolute path to the analysis run directory
* @returns IMF-backed macro hook, or `''`
*/
export function extractMacroContext(runDir: string): string {
const abs = path.join(runDir, 'intelligence/economic-context.md');
if (!fs.existsSync(abs)) return '';
const markdown = fs.readFileSync(abs, 'utf8');
const paragraph = extractMacroLeadParagraph(markdown);
return trimToLeadSentence(paragraph);
}
/**
* Resolve the deterministic 3–7 key-takeaway bullets used in both the
* Markdown article body and `article-meta.json`.
*
* @param runDir - Absolute path to the analysis run directory
* @returns Ordered list of takeaway bodies (3–7 entries)
*/
export function extractKeyTakeaways(runDir: string): string[] {
const sources: readonly string[] = [
'intelligence/synthesis-summary.md',
'intelligence/intelligence-assessment.md',
'extended/executive-brief.md',
'executive-brief.md',
];
const candidates = harvestCandidates(runDir, sources);
const bodies = candidates.map((t) => t.body);
const selected = dedupeItems(bodies, MAX_TAKEAWAYS);
if (selected.length < MIN_TAKEAWAYS) return [];
return selected;
}
/**
* Build the deterministic `ArticleMeta` record for one run. Pure function
* of the on-disk artifacts plus the resolved manifest fields.
*
* @param options - Run-level metadata + absolute run directory
* @returns Frozen, JSON-serialisable {@link ArticleMeta}
*/
export function buildArticleMeta(options: BuildArticleMetaOptions): ArticleMeta {
const { runDir, repoRoot, date, articleType, runId, gateResult, slug } = options;
const topFinding = extractExecutiveLead(runDir);
const keyTakeaways = extractKeyTakeaways(runDir);
const topRisks = extractTopRisks(runDir);
const keyDates = extractKeyDates(runDir);
const keyActors = extractKeyActors(runDir);
const macroContext = extractMacroContext(runDir);
const sources = computeSources(runDir);
const runDirRelPath = path.relative(repoRoot, runDir).split(path.sep).join('/');
return {
date,
articleType,
runId,
gateResult,
slug,
articlePath: `${runDirRelPath}/article.md`,
topFinding,
keyTakeaways,
topRisks,
keyDates,
keyActors,
macroContext,
sources,
};
}
/**
* Compute the run-relative paths of every artifact that fed into the meta
* record, in deterministic alphabetical order. Used as `isBasedOn` data
* by the HTML SEO layer.
*
* @param runDir - Absolute path to the analysis run directory
* @returns Sorted list of run-relative paths that exist on disk
*/
function computeSources(runDir: string): string[] {
const candidates = [
'executive-brief.md',
'extended/executive-brief.md',
'intelligence/synthesis-summary.md',
'intelligence/intelligence-assessment.md',
'intelligence/economic-context.md',
'intelligence/parliamentary-calendar-projection.md',
'intelligence/legislative-pipeline-forecast.md',
'intelligence/scenario-forecast.md',
'extended/forward-indicators.md',
'risk-scoring/risk-matrix.md',
'risk-scoring/political-risk.md',
'risk-scoring/quantitative-swot.md',
'classification/actor-mapping.md',
'intelligence/stakeholder-map.md',
'intelligence/coalition-dynamics.md',
];
return candidates.filter((rel) => fs.existsSync(path.join(runDir, rel))).sort();
}
/**
* Serialise an {@link ArticleMeta} as a stable JSON string with a trailing
* newline. Keys are emitted in declaration order (insertion-order, matching
* the interface layout). Determinism guarantee: same input → same bytes.
*
* @param meta - Article meta record
* @returns JSON string ready to be written next to `article.md`
*/
export function serializeArticleMeta(meta: ArticleMeta): string {
// JSON.stringify emits keys in insertion order — the {@link ArticleMeta}
// shape declares its keys in canonical reading order, so the output is
// already deterministic. We add a trailing newline for POSIX hygiene.
return `${JSON.stringify(meta, null, 2)}\n`;
}
/**
* Convenience wrapper that re-exports {@link _buildKeyTakeaways} so the
* aggregator can import the rendered Markdown block from a single module.
*/
export { _buildKeyTakeaways as buildKeyTakeawaysMarkdown };
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