#!/usr/bin/env php
<?php

/* Copyright (C) 2026 Moko Consulting <hello@mokoconsulting.tech>
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 * FILE INFORMATION
 * DEFGROUP: moko-platform.CLI
 * INGROUP: moko-platform
 * REPO: https://git.mokoconsulting.tech/MokoConsulting/moko-platform
 * PATH: /cli/release_mirror.php
 * BRIEF: Mirror a Gitea release (with assets) to a GitHub repository
 */

declare(strict_types=1);

require_once __DIR__ . '/../lib/Enterprise/CliFramework.php';

use MokoEnterprise\CliFramework;

class ReleaseMirrorCli extends CliFramework
{
    protected function configure(): void
    {
        $this->setDescription('Mirror a Gitea release (with assets) to a GitHub repository');
        $this->addArgument('--version', 'Version string (required)', '');
        $this->addArgument('--tag', 'Release tag name (required)', '');
        $this->addArgument('--token', 'Gitea API token', '');
        $this->addArgument('--api-base', 'Gitea API base URL for the repo (required)', '');
        $this->addArgument('--gh-token', 'GitHub personal access token', '');
        $this->addArgument('--gh-repo', 'GitHub org/repo (required)', '');
        $this->addArgument('--branch', 'Target branch (default: main)', 'main');
    }

    protected function run(): int
    {
        $version = $this->getArgument('--version');
        $tag     = $this->getArgument('--tag');
        $token   = $this->getArgument('--token');
        $apiBase = $this->getArgument('--api-base');
        $ghToken = $this->getArgument('--gh-token');
        $ghRepo  = $this->getArgument('--gh-repo');
        $branch  = $this->getArgument('--branch');

        // Allow tokens from environment
        $token   = $token ?: (getenv('MOKOGITEA_TOKEN') ?: (getenv('GITEA_TOKEN') ?: ''));
        $ghToken = $ghToken ?: (getenv('GH_MIRROR_TOKEN') ?: '');

        if ($version === '' || $tag === '' || $token === '' || $apiBase === '' || $ghToken === '' || $ghRepo === '') {
            $this->log('ERROR', "Usage: release_mirror.php --version VER --tag TAG --token TOKEN " .
                "--api-base URL --gh-token GH_MIRROR_TOKEN --gh-repo org/repo [--branch main]");
            $this->log('ERROR', "  --token: Gitea token (or MOKOGITEA_TOKEN / GITEA_TOKEN env)");
            $this->log('ERROR', "  --gh-token: GitHub token (or GH_MIRROR_TOKEN env)");
            return 1;
        }

        // ── Step 1: Get Gitea release by tag ─────────────────────────────────────────

        echo "Fetching Gitea release: {$tag}\n";
        $giteaRelease = $this->giteaApi("{$apiBase}/releases/tags/{$tag}", $token);
        if (!$giteaRelease || empty($giteaRelease['id'])) {
            $this->log('ERROR', "No Gitea release found with tag: {$tag}");
            return 1;
        }

        $giteaId = $giteaRelease['id'];
        $releaseName = $giteaRelease['name'] ?? "{$version}";
        $releaseBody = $giteaRelease['body'] ?? '';
        $assets = $giteaRelease['assets'] ?? [];

        echo "  Name: {$releaseName}\n";
        echo "  Assets: " . count($assets) . " file(s)\n";

        // ── Step 2: Check / create GitHub release ────────────────────────────────────

        $ghApiBase = "https://api.github.com/repos/{$ghRepo}";
        $ghUploadBase = "https://uploads.github.com/repos/{$ghRepo}";

        echo "Checking GitHub release: {$tag}\n";
        $ghRelease = $this->githubApi("{$ghApiBase}/releases/tags/{$tag}", $ghToken);

        if ($ghRelease && !empty($ghRelease['id'])) {
            // Update existing release title
            $ghReleaseId = $ghRelease['id'];
            echo "  GitHub release exists (id: {$ghReleaseId}), updating title\n";
            $patchPayload = json_encode([
                'name' => $releaseName,
                'body' => $releaseBody,
            ]);
            $this->githubApi("{$ghApiBase}/releases/{$ghReleaseId}", $ghToken, 'PATCH', $patchPayload);
        } else {
            // Create new release
            echo "  Creating GitHub release\n";
            $createPayload = json_encode([
                'tag_name'         => $tag,
                'target_commitish' => $branch,
                'name'             => $releaseName,
                'body'             => $releaseBody,
                'draft'            => false,
                'prerelease'       => ($tag !== 'stable'),
            ]);
            $ghRelease = $this->githubApi("{$ghApiBase}/releases", $ghToken, 'POST', $createPayload);
            if (!$ghRelease || empty($ghRelease['id'])) {
                $this->log('ERROR', 'Failed to create GitHub release');
                return 1;
            }
            $ghReleaseId = $ghRelease['id'];
            echo "  Created GitHub release (id: {$ghReleaseId})\n";
        }

        // ── Step 3: Download assets from Gitea ───────────────────────────────────────

        $tmpDir = sys_get_temp_dir() . '/moko-mirror-' . getmypid();
        @mkdir($tmpDir, 0755, true);

        $uploadUrl = "{$ghUploadBase}/releases/{$ghReleaseId}/assets";

        foreach ($assets as $asset) {
            $name = $asset['name'] ?? '';
            $downloadUrl = $asset['browser_download_url'] ?? '';
            if ($name === '' || $downloadUrl === '') {
                continue;
            }

            $localPath = "{$tmpDir}/{$name}";
            echo "  Downloading: {$name}\n";

            if (!$this->giteaDownload($downloadUrl, $token, $localPath)) {
                $this->log('ERROR', "  Failed to download: {$name}");
                continue;
            }

            // ── Step 4: Upload asset to GitHub ───────────────────────────────────────
            echo "  Uploading: {$name}\n";
            $code = $this->githubUploadAsset($uploadUrl, $ghToken, $localPath, $name);
            $status = ($code >= 200 && $code < 300) ? 'OK' : "FAILED ({$code})";
            echo "    {$status}\n";
        }

        // ── Cleanup ──────────────────────────────────────────────────────────────────

        array_map('unlink', glob("{$tmpDir}/*") ?: []);
        @rmdir($tmpDir);

        // ── Summary ──────────────────────────────────────────────────────────────────

        echo "\nMirror complete: {$tag} -> github.com/{$ghRepo}\n";
        echo "  Version: {$version}\n";
        echo "  Assets: " . count($assets) . " file(s)\n";
        return 0;
    }

    private function giteaApi(string $url, string $token, string $method = 'GET', ?string $body = null): ?array
    {
        $ch = curl_init($url);
        curl_setopt_array($ch, [
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_HTTPHEADER => [
                "Authorization: token {$token}",
                'Content-Type: application/json',
            ],
            CURLOPT_TIMEOUT => 30,
            CURLOPT_CUSTOMREQUEST => $method,
        ]);
        if ($body !== null) {
            curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
        }
        $response = curl_exec($ch);
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);

        if ($httpCode < 200 || $httpCode >= 300 || empty($response)) {
            return null;
        }
        return json_decode($response, true) ?: null;
    }

    private function giteaDownload(string $url, string $token, string $dest): bool
    {
        $ch = curl_init($url);
        $fp = fopen($dest, 'wb');
        curl_setopt_array($ch, [
            CURLOPT_HTTPHEADER => ["Authorization: token {$token}"],
            CURLOPT_FILE => $fp,
            CURLOPT_FOLLOWLOCATION => true,
            CURLOPT_TIMEOUT => 120,
        ]);
        curl_exec($ch);
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        fclose($fp);
        return $httpCode >= 200 && $httpCode < 300;
    }

    private function githubApi(string $url, string $token, string $method = 'GET', ?string $body = null): ?array
    {
        $ch = curl_init($url);
        curl_setopt_array($ch, [
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_HTTPHEADER => [
                "Authorization: token {$token}",
                'Accept: application/vnd.github+json',
                'User-Agent: moko-platform',
                'Content-Type: application/json',
            ],
            CURLOPT_TIMEOUT => 30,
            CURLOPT_CUSTOMREQUEST => $method,
        ]);
        if ($body !== null) {
            curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
        }
        $response = curl_exec($ch);
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);

        if ($httpCode < 200 || $httpCode >= 300 || empty($response)) {
            return null;
        }
        return json_decode($response, true) ?: null;
    }

    private function githubUploadAsset(string $uploadUrl, string $token, string $filePath, string $name): int
    {
        $url = $uploadUrl . '?name=' . urlencode($name);
        $ch = curl_init($url);
        curl_setopt_array($ch, [
            CURLOPT_POST => true,
            CURLOPT_HTTPHEADER => [
                "Authorization: token {$token}",
                'Accept: application/vnd.github+json',
                'User-Agent: moko-platform',
                'Content-Type: application/octet-stream',
            ],
            CURLOPT_POSTFIELDS => file_get_contents($filePath),
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_TIMEOUT => 120,
        ]);
        curl_exec($ch);
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        return $httpCode;
    }
}

$app = new ReleaseMirrorCli();
exit($app->execute());