#!/usr/bin/env php
<?php
/* Copyright (C) 2026 Moko Consulting <hello@mokoconsulting.tech>
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 * FILE INFORMATION
 * DEFGROUP: MokoStandards.CLI
 * INGROUP: MokoStandards
 * REPO: https://git.mokoconsulting.tech/MokoConsulting/moko-platform
 * PATH: /cli/release_notes.php
 * BRIEF: Extract release notes from CHANGELOG.md for a given version
 */

declare(strict_types=1);

$path = '.';
$version = null;
foreach ($argv as $i => $arg) {
    if ($arg === '--path' && isset($argv[$i + 1])) $path = $argv[$i + 1];
    if ($arg === '--version' && isset($argv[$i + 1])) $version = $argv[$i + 1];
}

if ($version === null) {
    // Read from README.md
    $readme = realpath($path) . '/README.md';
    if (file_exists($readme)) {
        $content = file_get_contents($readme);
        if (preg_match('/^\s*VERSION:\s*(\d{2}\.\d{2}\.\d{2})/m', $content, $m)) {
            $version = $m[1];
        }
    }
}

if ($version === null) {
    fwrite(STDERR, "Usage: release_notes.php --path . --version XX.YY.ZZ\n");
    exit(1);
}

$changelog = realpath($path) . '/CHANGELOG.md';
if (!file_exists($changelog)) {
    echo "Release {$version}\n";
    exit(0);
}

$lines = file($changelog, FILE_IGNORE_NEW_LINES);
$notes = [];
$capturing = false;

foreach ($lines as $line) {
    if (preg_match('/^##\s.*' . preg_quote($version, '/') . '/', $line)) {
        $capturing = true;
        continue;
    }
    if ($capturing && preg_match('/^## /', $line)) {
        break; // Next version heading — stop
    }
    if ($capturing) {
        $notes[] = $line;
    }
}

$result = trim(implode("\n", $notes));
echo $result ?: "Release {$version}";
echo "\n";
exit(0);