import { execFileSync } from 'node:child_process';

import { readFileSync } from 'node:fs';

import { resolve } from 'node:path';

const featureSubject = /^feat(?:\([^\r\n)]+\))?!?:\s*(.+)$/;

function git(root, args) {

return execFileSync('git', args, {

cwd: root,

encoding: 'utf8',

stdio: ['ignore', 'pipe', 'ignore'],

}).trim();

}

function readAcknowledgements(root) {

const result = {};

for (const [locale, file] of Object.entries({

en: 'README.md',

'zh-CN': 'doc/README.zh-CN.md',

ja: 'doc/README.ja.md',

})) {

try {

const sentence = readFileSync(resolve(root, file), 'utf8').trim().split(/\r?\n/).at(-1);

const parts = [];

let offset = 0;

for (const match of sentence.matchAll(/\[([^\]]+)\]\((https?:\/\/[^\s)]+)\)/g)) {

if (match.index > offset) parts.push({ text: sentence.slice(offset, match.index) });

parts.push({ text: match[1], href: match[2] });

offset = match.index + match[0].length;

}

if (offset) {

if (offset < sentence.length) parts.push({ text: sentence.slice(offset) });

result[locale] = parts;

}

} catch {}

}

return result;

}

export function readBuildInfo(root) {

const packageJson = JSON.parse(readFileSync(resolve(root, 'package.json'), 'utf8'));

let revision = '';

let recentFeatures = [];

try {

revision = git(root, ['rev-parse', 'HEAD']);

} catch {}

try {

recentFeatures = git(root, [

'log',

'--extended-regexp',

'--grep=^feat(\\([^)]*\\))?!?:',

'--max-count=10',

'--format=%H%x00%cI%x00%s',

])

.split('\n')

.filter(Boolean)

.flatMap((line) => {

const [hash, date, subject] = line.split('\0');

const match = subject?.match(featureSubject);

return match ? [{ hash, date, subject: match[1].trim() }] : [];

})

.slice(0, 10);

} catch {}

return {

version: packageJson.version || '',

revision,

builtAt: new Date().toISOString(),

recentFeatures,

acknowledgements: readAcknowledgements(root),

};

}