/**
 * Lint every eidos component CSS against its morfo contract.
 *
 * Usage: npx tsx scripts/eidos-lint-all.ts
 *
 * Prints a per-component summary so the drift between eidos and the
 * morfo declarations is visible at a glance.
 *
 * Also validates the `data-event*` VALUES against the morfo catalogue and
 * the sema canon — see `scripts/eidos-event-vocabulary.ts`.
 */

import { existsSync, readFileSync, readdirSync } from 'node:fs';
import { resolve } from 'node:path';

import { compileMorfo } from '../src/uix/morfo/compile';
import { lintEidosCss } from '../src/uix/eidos/lint';
import type { Morfo } from '../src/uix/morfo/types';
import {
	formatEventFindings,
	lintEventValues,
	loadEventVocabulary
} from './eidos-event-vocabulary';

// Shared with morfo-check so the two instruments cannot drift (P0 fase A,
// audit 2026-08-26) — the list lives in ./eidos-only-attrs.ts.
import { EIDOS_ONLY_ATTRS } from './eidos-only-attrs';

const RUNTIME_SIGNAL_ATTRS = new Set([
	'data-disabled',
	'data-invalid',
	'data-last-action',
	'data-orientation',
	'data-readonly',
	'data-side',
	'data-state'
]);

const EIDOS_ONLY_PART_SUFFIXES = [
	'footer',
	'handle',
	'header',
	'indicator',
	'label',
	'main',
	// waveform F3: the two copies of the wave path (base + progress-clipped) —
	// decorative svg primitives, rule-of-4 compliant.
	'played',
	'remaining',
	'row',
	'row-label',
	'status'
] as const;

async function main() {
	const eidosDir = resolve('src/uix/eidos/components');
	const cssFiles = readdirSync(eidosDir, { withFileTypes: true }).flatMap((entry) => {
		if (entry.isFile() && entry.name.endsWith('.css')) {
			const name = entry.name.replace(/\.css$/, '');
			return [{ name, path: resolve(eidosDir, entry.name) }];
		}
		if (entry.isDirectory()) {
			const path = resolve(eidosDir, entry.name, `${entry.name}.css`);
			return existsSync(path) ? [{ name: entry.name, path }] : [];
		}
		return [];
	});

	console.log('component             morfo  eidos  invalid  unused');
	console.log('─────────────────────────────────────────────────────');

	let totalInvalid = 0;
	let totalEidosOnly = 0;
	let totalUnused = 0;
	const driftHotspots: { name: string; eidosOnly: string[]; invalid: string[] }[] = [];

	for (const file of cssFiles) {
		const name = file.name;
		const morfoPath = resolve(`src/uix/morfo/components/${name}.ts`);
		try {
			readFileSync(morfoPath);
		} catch {
			console.log(`${name.padEnd(22)}(no morfo file — skipped)`);
			continue;
		}
		const mod = (await import(`../src/uix/morfo/components/${name}`)) as Record<string, unknown>;
		const exportName = `${name.replace(/-([a-z])/g, (_, c: string) => c.toUpperCase())}Morfo`;
		const morfo = mod[exportName] as Morfo | undefined;
		if (!morfo) {
			console.log(`${name.padEnd(22)}(${exportName} not exported — skipped)`);
			continue;
		}
		const compiled = compileMorfo(morfo);
		const partMarkers = new Set(Object.values(compiled.parts.attrs));
		const css = readFileSync(file.path, 'utf-8');
		const report = lintEidosCss(css, compiled);
		console.log(
			`${name.padEnd(22)}${String(report.counts.morfoBacked).padEnd(7)}${String(report.counts.eidosOnly).padEnd(7)}${String(report.counts.invalid).padEnd(9)}${report.unusedFromContract.length}`
		);
		totalInvalid += report.counts.invalid;
		totalEidosOnly += report.counts.eidosOnly;
		totalUnused += report.unusedFromContract.length;

		// Filter eidos-only that look like drift (data-* on a part where the morfo
		// never declared the attr — vs design tokens like data-color/-size/-variant).
		const drift = report.findings.filter(
			(f) =>
				f.status === 'eidos-only' &&
				(f.eidosOnlyAttrs ?? f.attrs).some(
					(a) =>
						a.attr.startsWith('data-') &&
						!partMarkers.has(a.attr) &&
						!isAllowedEidosOnlyAttr(a.attr)
				)
		);
		const invalid = report.findings.filter((f) => f.status === 'invalid');
		if (drift.length || invalid.length) {
			driftHotspots.push({
				name,
				eidosOnly: drift.map((f) => f.rule),
				invalid: invalid.map((f) => `${f.rule}  — ${f.reason}`)
			});
		}
	}

	console.log('─────────────────────────────────────────────────────');
	console.log(
		`totals${' '.repeat(16)}        ${totalEidosOnly}      ${totalInvalid}        ${totalUnused}`
	);

	if (driftHotspots.length) {
		console.log('\nDrift hotspots (eidos uses data-* attrs the morfo does not declare):');
		for (const h of driftHotspots) {
			if (!h.eidosOnly.length && !h.invalid.length) continue;
			console.log(`\n  ${h.name}`);
			for (const r of h.invalid) console.log(`    ✗ ${r}`);
			for (const r of h.eidosOnly) console.log(`    · ${r}`);
		}
	} else {
		console.log('\nNo drift hotspots beyond documented Eidos-only attrs/parts.');
	}

	// `data-event*` VALUE check. Its own pass over the same files: it needs no
	// compiled morfo, so it also covers the CSS skipped above for lack of one.
	const vocabulary = await loadEventVocabulary();
	let deadEvents = 0;
	const eventBlocks: string[] = [];
	for (const file of cssFiles) {
		const findings = lintEventValues(readFileSync(file.path, 'utf-8'), vocabulary, file.name);
		if (!findings.length) continue;
		deadEvents += findings.filter((f) => f.level === 'error').length;
		eventBlocks.push(`  ${file.name}\n${formatEventFindings(findings, '    ')}`);
	}

	if (eventBlocks.length) {
		console.log('\ndata-event* vocabulary (value must exist in a morfo / the canon):');
		for (const block of eventBlocks) console.log(`\n${block}`);
	} else {
		console.log('\nEvery data-event* value in a recipe exists in the morfo catalogue.');
	}

	if (totalInvalid > 0 || deadEvents > 0) process.exit(1);
}

function isAllowedEidosOnlyAttr(attr: string): boolean {
	if (EIDOS_ONLY_ATTRS.has(attr)) return true;
	if (RUNTIME_SIGNAL_ATTRS.has(attr)) return true;

	return EIDOS_ONLY_PART_SUFFIXES.some((suffix) => attr.endsWith(`-${suffix}`));
}

main().catch((err) => {
	console.error(err);
	process.exit(2);
});