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// SPDX-License-Identifier: Apache-2.0
/**
* @module Aggregator/AnalysisAggregator
* @description Read an analysis run directory, consult its `manifest.json`,
* and produce one canonical Markdown document that concatenates every
* artifact in the order declared by {@link ARTIFACT_SECTIONS}. The
* document is prefixed with a provenance block and suffixed with a
* tradecraft-references appendix plus an analysis-index appendix so a
* reader can trace every claim back to its source file on GitHub.
*/
import fs from 'fs';
import path from 'path';
import {
ARTIFACT_SECTIONS,
MANIFEST_SECTION_ID,
MANIFEST_SECTION_TITLE,
SUPPLEMENTARY_SECTION_ID,
SUPPLEMENTARY_SECTION_TITLE,
TRADECRAFT_SECTION_ID,
TRADECRAFT_SECTION_TITLE,
type ArtifactSection,
} from './artifact-order.js';
import { cleanArtifact, githubBlobUrl } from './clean-artifact.js';
/** Raw manifest shape as committed by the analysis pipeline. */
export interface AnalysisManifest {
readonly articleType: string;
readonly runId?: string;
readonly date?: string;
readonly analysisDir?: string;
readonly files?: ManifestFiles;
readonly history?: readonly ManifestHistoryEntry[];
}
/** `manifest.files` can be nested category → paths or flat path → description. */
export type ManifestFiles = Record<string, readonly string[] | Record<string, string>>;
/** One entry in `manifest.history[]`; only fields we read are typed. */
export interface ManifestHistoryEntry {
readonly stage?: string;
readonly completedAt?: string;
readonly startedAt?: string;
readonly finishedAt?: string;
readonly runId?: string;
readonly gateResult?: string;
readonly summary?: string;
readonly filesWritten?: readonly string[];
}
/** Result of {@link aggregateAnalysisRun}. */
export interface AggregatedRun {
/** Final Markdown document (provenance + sections + appendices). */
readonly markdown: string;
/** Repo-relative path of the run dir (e.g. `analysis/daily/2026-01-15/breaking-run1`). */
readonly runDirRelPath: string;
/** Article type slug from the manifest. */
readonly articleType: string;
/** ISO date string of the run (YYYY-MM-DD). */
readonly date: string;
/** List of every artifact included, in the order they appear. */
readonly includedArtifacts: readonly IncludedArtifact[];
/** Latest resolved gate result read from `manifest.history[]`. */
readonly gateResult: string;
/**
* Ordered list of top-level (H2) sections that were actually emitted into
* the aggregate — used by the HTML renderer to build the article
* table-of-contents sidebar. Includes canonical sections, the
* supplementary-intelligence bucket, the tradecraft-references appendix,
* and the analysis-index appendix, in document order.
*/
readonly sectionToc: readonly TocSection[];
}
/** One entry in the article-level table of contents (H2 level). */
export interface TocSection {
/** Fragment identifier — matches the `id="…"` on the rendered H2. */
readonly id: string;
/** Display title shown in the sidebar nav. */
readonly title: string;
}
/** Metadata for one artifact included in the aggregate. */
export interface IncludedArtifact {
/** Path relative to the run dir. */
readonly runRelPath: string;
/** Path relative to the repo root. */
readonly repoRelPath: string;
/** Id of the section this artifact belongs to. */
readonly sectionId: string;
}
/** Options for {@link aggregateAnalysisRun}. */
export interface AggregateOptions {
/** Absolute path to the analysis run directory. */
readonly runDir: string;
/** Absolute path to the repo root (used to build repo-relative paths). */
readonly repoRoot: string;
/**
* Optional: all methodology files and template files that should be
* listed in the tradecraft appendix. If omitted, the aggregator
* discovers them under `analysis/methodologies/*.md` +
* `analysis/templates/*.md`.
*/
readonly tradecraftFiles?: readonly string[];
}
/**
* Extract every string entry from a single `files` value (which may be an
* array of strings or a `path → description` object). Split out so
* {@link flattenManifestFiles} stays under the cognitive-complexity budget.
*
* @param value - One value from `Object.values(files)`
* @returns Strings contained within, or `[]` when the shape is unknown
*/
function extractFileEntries(value: unknown): string[] {
if (Array.isArray(value)) {
return value.filter((e): e is string => typeof e === 'string');
}
Eif (value && typeof value === 'object') {
return Object.keys(value as Record<string, unknown>);
}
return [];
}
/**
* Normalise `manifest.files` into a flat list of `runRelPath` strings.
*
* @param files - Manifest `files` section (nested or flat)
* @returns De-duplicated list of run-relative artifact paths
*/
export function flattenManifestFiles(files: ManifestFiles | undefined): string[] {
if (!files) return [];
const out: string[] = [];
for (const value of Object.values(files)) {
out.push(...extractFileEntries(value));
}
return out;
}
/**
* Pick the latest non-PENDING gateResult from `manifest.history[]`, falling
* back to `PENDING` if none is recorded. Mirrors the behaviour of
* {@link readLatestResolvedGateResult} in `src/utils/file-utils.ts` but
* operates on an in-memory manifest.
*
* @param manifest - Parsed manifest object
* @returns The latest non-PENDING gate result, or `"PENDING"` when none found
*/
export function latestGateResult(manifest: AnalysisManifest): string {
const history = manifest.history ?? [];
for (let i = history.length - 1; i >= 0; i--) {
const entry = history[i];
const gr = entry?.gateResult;
if (gr && gr !== 'PENDING') return gr;
}
return 'PENDING';
}
/**
* Expand an `artifacts` entry from {@link ArtifactSection} into a list of
* concrete artifact paths. Exact paths are kept as-is; directory prefixes
* ending in `/` expand to every remaining `.md` under that directory
* (lexical order), excluding files already claimed by higher-priority
* sections.
*
* @param section - Canonical section descriptor from {@link ARTIFACT_SECTIONS}
* @param available - Set of every known artifact path (run-relative)
* @param consumed - Mutable set of paths already claimed by earlier sections
* @returns Ordered list of artifact paths that belong to this section
*/
export function expandSectionArtifacts(
section: ArtifactSection,
available: Set<string>,
consumed: Set<string>
): string[] {
const out: string[] = [];
for (const entry of section.artifacts) {
if (entry.endsWith('/')) {
const prefix = entry;
const matching = [...available]
.filter((p) => p.startsWith(prefix) && !consumed.has(p))
.sort();
for (const p of matching) {
out.push(p);
consumed.add(p);
}
} else if (available.has(entry) && !consumed.has(entry)) {
out.push(entry);
consumed.add(entry);
}
}
return out;
}
/**
* Discover tradecraft files (methodologies + templates) under a repo root.
* Returned paths are repo-relative with POSIX separators and sorted
* lexically.
*
* @param repoRoot - Absolute path of the repo root
* @returns Sorted list of `analysis/methodologies/*.md` + `analysis/templates/*.md`
*/
export function discoverTradecraftFiles(repoRoot: string): string[] {
const result: string[] = [];
for (const sub of ['analysis/methodologies', 'analysis/templates']) {
const dir = path.join(repoRoot, sub);
if (!fs.existsSync(dir)) continue;
const entries = fs.readdirSync(dir, { withFileTypes: true });
for (const entry of entries) {
if (entry.isFile() && entry.name.endsWith('.md')) {
result.push(`${sub}/${entry.name}`);
}
}
}
return result.sort();
}
/**
* Walk the run directory and return every `.md` file as a run-relative
* POSIX path, excluding files under `data/` (raw MCP payloads, not meant
* to be rendered).
*
* @param runDir - Absolute path to the analysis run directory
* @returns Sorted list of run-relative `.md` paths
*/
function collectRunArtifacts(runDir: string): string[] {
const result: string[] = [];
Iif (!fs.existsSync(runDir)) return result;
const walk = (dir: string, prefix: string): void => {
const entries = fs.readdirSync(dir, { withFileTypes: true });
for (const entry of entries) {
const full = path.join(dir, entry.name);
const rel = prefix ? `${prefix}/${entry.name}` : entry.name;
if (entry.isDirectory()) {
Iif (entry.name === 'data' || entry.name === 'runs') continue;
walk(full, rel);
} else if (entry.isFile() && entry.name.endsWith('.md')) {
result.push(rel);
}
}
};
walk(runDir, '');
return result.sort();
}
/**
* Human-friendly title derived from a file stem (kebab/snake → Title Case).
*
* @param stem - File stem (e.g. `synthesis-summary.md`)
* @returns Humanised title (e.g. `Synthesis Summary`)
*/
function humanize(stem: string): string {
return stem
.replace(/[-_]+/g, ' ')
.replace(/\.md$/i, '')
.replace(/\b([a-z])/g, (_, c: string) => c.toUpperCase())
.trim();
}
/**
* Render the provenance block shown at the very top of the aggregated
* document. Shows run metadata, gate result, and a direct link to the
* manifest on GitHub so the reader can audit the full artifact set.
*
* @param params - Provenance metadata for the aggregated run
* @param params.articleType - Article type slug (e.g. `breaking`)
* @param params.date - ISO date of the run (`YYYY-MM-DD`)
* @param params.runId - Stable identifier for the run
* @param params.gateResult - Latest non-PENDING gate result
* @param params.runDirRelPath - Repo-relative path of the run directory
* @param params.manifestRelPath - Repo-relative path of `manifest.json`
* @returns Markdown blockquote ready to be concatenated into the aggregate
*/
export function renderProvenanceBlock(params: {
articleType: string;
date: string;
runId: string;
gateResult: string;
runDirRelPath: string;
manifestRelPath: string;
}): string {
const manifestUrl = githubBlobUrl(params.manifestRelPath);
const treeUrl = `https://github.com/Hack23/euparliamentmonitor/tree/main/${params.runDirRelPath}`;
return [
'<!-- Aggregated analysis — do not edit; regenerate via `npm run generate-article`. -->',
'',
'> **Provenance**',
'>',
`> - **Article type:** \`${params.articleType}\``,
`> - **Run date:** ${params.date}`,
`> - **Run id:** \`${params.runId}\``,
`> - **Gate result:** \`${params.gateResult}\``,
`> - **Analysis tree:** [${params.runDirRelPath}](${treeUrl})`,
`> - **Manifest:** [manifest.json](${manifestUrl})`,
'',
].join('\n');
}
/**
* Render the tradecraft-references appendix — one bullet per
* methodology/template file with a GitHub blob link.
*
* @param files - Repo-relative paths under `analysis/methodologies/` and
* `analysis/templates/`
* @returns Markdown block with two subsections (methodologies, templates)
*/
export function renderTradecraftAppendix(files: readonly string[]): string {
const methods = files.filter((f) => f.startsWith('analysis/methodologies/'));
const templates = files.filter((f) => f.startsWith('analysis/templates/'));
const block: string[] = [
`<h2 id="${TRADECRAFT_SECTION_ID}">${TRADECRAFT_SECTION_TITLE}</h2>`,
'',
'This article is produced under the [Hack23 AB](https://hack23.com) intelligence tradecraft library. Every methodology and artifact template applied to this run is linked below.',
'',
];
if (methods.length > 0) {
block.push('### Methodologies');
block.push('');
for (const rel of methods) {
const stem = rel.split('/').pop()?.replace(/\.md$/i, '') ?? rel;
block.push(`- [${humanize(stem)}](${githubBlobUrl(rel)})`);
}
block.push('');
}
if (templates.length > 0) {
block.push('### Artifact templates');
block.push('');
for (const rel of templates) {
const stem = rel.split('/').pop()?.replace(/\.md$/i, '') ?? rel;
block.push(`- [${humanize(stem)}](${githubBlobUrl(rel)})`);
}
block.push('');
}
return block.join('\n');
}
/**
* Render the analysis-index appendix — a compact table of every included
* artifact and its section, plus a direct link to the manifest.
*
* @param included - Artifacts that contributed to the aggregated document
* @param manifestRelPath - Repo-relative path of `manifest.json`
* @returns Markdown block with the index table
*/
export function renderAnalysisIndex(
included: readonly IncludedArtifact[],
manifestRelPath: string
): string {
const rows = included.map((a) => {
const stem = a.runRelPath.split('/').pop()?.replace(/\.md$/i, '') ?? a.runRelPath;
return `| ${a.sectionId} | [${stem}](${githubBlobUrl(a.repoRelPath)}) | \`${a.runRelPath}\` |`;
});
return [
`<h2 id="${MANIFEST_SECTION_ID}">${MANIFEST_SECTION_TITLE}</h2>`,
'',
`Every artifact below was read by the aggregator and contributed to this article. The raw [manifest.json](${githubBlobUrl(manifestRelPath)}) carries the full machine-readable list, including gate-result history.`,
'',
'| Section | Artifact | Path |',
'|---|---|---|',
...rows,
'',
].join('\n');
}
/**
* Read a single artifact, clean it, and return the Markdown lines that
* should be appended to the aggregated document along with the provenance
* metadata. Split out so {@link aggregateAnalysisRun} stays under the
* cognitive-complexity budget.
*
* @param runDir - Absolute path to the analysis run directory
* @param runRel - Run-relative POSIX path of the artifact
* @param runDirRelPath - Repo-relative POSIX path of the run directory
* @param seenMermaid - Shared mermaid-body hash set for dedup
* @param sectionId - Identifier of the owning section (for the index)
* @param suppressHeader - When `true`, omit the `### {humanize(stem)}` heading
* (used when the section has a single artifact whose name already
* matches the section title, to avoid a redundant H3 immediately
* under the section H2)
* @returns `{ lines, included }` ready to be appended; `null` when the file
* doesn't exist on disk
*/
function renderArtifactFragment(
runDir: string,
runRel: string,
runDirRelPath: string,
seenMermaid: Set<string>,
sectionId: string,
suppressHeader: boolean
): { lines: string[]; included: IncludedArtifact } | null {
const abs = path.join(runDir, runRel);
Iif (!fs.existsSync(abs)) return null;
const raw = fs.readFileSync(abs, 'utf8');
const repoRel = `${runDirRelPath}/${runRel}`;
const cleaned = cleanArtifact(raw, {
artifactRelPath: repoRel,
seenMermaidHashes: seenMermaid,
});
const stem = runRel.split('/').pop()?.replace(/\.md$/i, '') ?? runRel;
const headerLines = suppressHeader ? [] : ['', `### ${humanize(stem)}`];
const lines = [
...headerLines,
'',
`<p class="artifact-source"><a href="${githubBlobUrl(repoRel)}" rel="noopener">View source: <code>${runRel}</code></a></p>`,
'',
cleaned.markdown,
];
const included: IncludedArtifact = {
runRelPath: runRel,
repoRelPath: repoRel,
sectionId,
};
return { lines, included };
}
/**
* Decide whether the `### {humanize(stem)}` sub-heading can be suppressed
* for a single-artifact section. The rule: when a section contains exactly
* one artifact AND the humanised stem matches the section title
* (case-insensitive), the sub-heading would restate the section H2 and is
* dropped. This fixes the visible `<h2>Synthesis Summary</h2><h3>Synthesis
* Summary</h3>` duplication seen in first-pass aggregates.
*
* @param paths - Run-relative artifact paths that belong to the section
* @param sectionTitle - Display title of the owning section
* @returns `true` when the single-artifact header should be suppressed
*/
function shouldSuppressFragmentHeader(paths: readonly string[], sectionTitle: string): boolean {
Iif (paths.length !== 1) return false;
const onlyPath = paths[0];
Iif (!onlyPath) return false;
const stem = onlyPath.split('/').pop()?.replace(/\.md$/i, '') ?? onlyPath;
return humanize(stem).toLowerCase() === sectionTitle.toLowerCase();
}
/**
* Append one canonical section to `sectionMarkdown`, reading every
* fragment through {@link renderArtifactFragment}. Extracted so
* {@link aggregateAnalysisRun} stays under the cognitive-complexity budget.
*
* @param runDir - Absolute run directory
* @param runDirRelPath - Repo-relative run directory
* @param sectionId - Section identifier
* @param sectionTitle - Section title
* @param paths - Run-relative paths to include
* @param seenMermaid - Shared mermaid dedup set
* @param sectionMarkdown - Mutable output buffer
* @param included - Mutable list of included-artifact metadata
* @param emittedSections - Mutable list of `(id, title)` pairs for the
* article-level TOC; a section is recorded only when at least one
* of its artifacts was actually rendered
*/
/**
* Prefix applied to every article-level section id to avoid collisions
* with artifact-generated heading anchors. A section like `stakeholder-map`
* becomes `#section-stakeholder-map`, leaving the bare `#stakeholder-map`
* slug free for an artifact that happens to contain a `### Stakeholder
* Map` heading (which `markdown-it-anchor` will slug verbatim).
*/
const SECTION_ID_PREFIX = 'section-';
/**
* Namespace a canonical section id so it cannot collide with an artifact
* heading slug produced downstream by markdown-it-anchor.
*
* @param sectionId - Raw section identifier from `ARTIFACT_SECTIONS`
* @returns Namespaced id like `section-stakeholder-map`
*/
function namespacedSectionId(sectionId: string): string {
return `${SECTION_ID_PREFIX}${sectionId}`;
}
function appendSection(
runDir: string,
runDirRelPath: string,
sectionId: string,
sectionTitle: string,
paths: readonly string[],
seenMermaid: Set<string>,
sectionMarkdown: string[],
included: IncludedArtifact[],
emittedSections: TocSection[]
): void {
if (paths.length === 0) return;
const emittedId = namespacedSectionId(sectionId);
sectionMarkdown.push(`<h2 id="${emittedId}">${sectionTitle}</h2>`);
const suppress = shouldSuppressFragmentHeader(paths, sectionTitle);
let anyFragmentRendered = false;
for (const runRel of paths) {
const fragment = renderArtifactFragment(
runDir,
runRel,
runDirRelPath,
seenMermaid,
emittedId,
suppress
);
Iif (!fragment) continue;
anyFragmentRendered = true;
sectionMarkdown.push(...fragment.lines);
included.push(fragment.included);
}
Eif (anyFragmentRendered) {
emittedSections.push({ id: emittedId, title: sectionTitle });
}
sectionMarkdown.push('');
}
/**
* Read, clean, and concatenate every artifact declared by the run's manifest
* (with discovery fallback when manifest.files is missing), returning a
* single aggregated Markdown document.
*
* The function is deterministic: given the same inputs it produces the
* same output byte-for-byte.
*
* @param options - Aggregation options (run dir, repo root, tradecraft files)
* @returns {@link AggregatedRun} describing the rendered document
*/
export function aggregateAnalysisRun(options: AggregateOptions): AggregatedRun {
const { runDir, repoRoot } = options;
if (!fs.existsSync(runDir)) {
throw new Error(`Run directory does not exist: ${runDir}`);
}
const manifestPath = path.join(runDir, 'manifest.json');
let manifest: AnalysisManifest = { articleType: 'unknown' };
Eif (fs.existsSync(manifestPath)) {
manifest = JSON.parse(fs.readFileSync(manifestPath, 'utf8')) as AnalysisManifest;
}
const manifestFiles = flattenManifestFiles(manifest.files);
const discovered = collectRunArtifacts(runDir);
// Merge manifest-declared files with discovered files; manifest gives order
// priority, discovery ensures nothing is missed.
const availableSet = new Set<string>([...manifestFiles, ...discovered]);
const available = [...availableSet].sort();
const consumed = new Set<string>();
const includedArtifacts: IncludedArtifact[] = [];
const emittedSections: TocSection[] = [];
const sectionMarkdown: string[] = [];
const seenMermaid = new Set<string>();
const runDirRelPath = path.relative(repoRoot, runDir).split(path.sep).join('/');
for (const section of ARTIFACT_SECTIONS) {
const paths = expandSectionArtifacts(section, new Set(available), consumed);
appendSection(
runDir,
runDirRelPath,
section.id,
section.title,
paths,
seenMermaid,
sectionMarkdown,
includedArtifacts,
emittedSections
);
}
// Supplementary bucket: anything that didn't match a declared section
const leftovers = available.filter((p) => !consumed.has(p));
Iif (leftovers.length > 0) {
appendSection(
runDir,
runDirRelPath,
SUPPLEMENTARY_SECTION_ID,
SUPPLEMENTARY_SECTION_TITLE,
leftovers,
seenMermaid,
sectionMarkdown,
includedArtifacts,
emittedSections
);
for (const p of leftovers) consumed.add(p);
}
const tradecraftFiles = options.tradecraftFiles ?? discoverTradecraftFiles(repoRoot);
const articleType = manifest.articleType ?? 'unknown';
const date = manifest.date ?? guessDateFromRunDir(runDirRelPath);
const runId = manifest.runId ?? path.basename(runDir);
const gateResult = latestGateResult(manifest);
const manifestRelPath = `${runDirRelPath}/manifest.json`;
const documentTitle = `${humanize(articleType)} — ${date}`;
const provenance = renderProvenanceBlock({
articleType,
date,
runId,
gateResult,
runDirRelPath,
manifestRelPath,
});
const tradecraft = renderTradecraftAppendix(tradecraftFiles);
const analysisIndex = renderAnalysisIndex(includedArtifacts, manifestRelPath);
// Both appendices emit their own <h2 id="…"> blocks — record them so the
// article TOC mirrors the rendered document in document order.
emittedSections.push({ id: TRADECRAFT_SECTION_ID, title: TRADECRAFT_SECTION_TITLE });
emittedSections.push({ id: MANIFEST_SECTION_ID, title: MANIFEST_SECTION_TITLE });
const markdown = [
`# ${documentTitle}`,
'',
provenance,
'',
...sectionMarkdown,
'',
tradecraft,
'',
analysisIndex,
'',
]
.join('\n')
.replace(/\n{3,}/g, '\n\n');
return {
markdown,
runDirRelPath,
articleType,
date,
includedArtifacts,
gateResult,
sectionToc: emittedSections,
};
}
/**
* Extract a `YYYY-MM-DD` date from a path like
* `analysis/daily/2026-01-15/run`. Falls back to the epoch date when no
* ISO date is embedded in the path.
*
* @param runDirRelPath - Repo-relative path of the run directory
* @returns ISO date string in `YYYY-MM-DD` form
*/
function guessDateFromRunDir(runDirRelPath: string): string {
const match = /(\d{4}-\d{2}-\d{2})/.exec(runDirRelPath);
return match ? (match[1] ?? '1970-01-01') : '1970-01-01';
}
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