#!/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/updates_xml_build.php
 * BRIEF: Generate Joomla updates.xml from extension manifest metadata
 *
 * Usage:
 *   php updates_xml_build.php --path /repo --version 04.01.00 --stability stable
 *   php updates_xml_build.php --path /repo --version 04.01.00 --stability stable --sha SHA256
 *   php updates_xml_build.php --path /repo --version 04.01.00 --stability stable --github-output
 *
 * Options:
 *   --path         Repository root (default: .)
 *   --version      Version string (required)
 *   --stability    One of: stable, rc, beta, alpha, development (default: stable)
 *   --sha          SHA-256 hash of the ZIP package (optional)
 *   --gitea-url    Gitea instance URL (default: env GITEA_URL or https://git.mokoconsulting.tech)
 *   --org          Organization (default: env GITEA_ORG)
 *   --repo         Repository name (default: env GITEA_REPO)
 *   --output       Output file path (default: updates.xml in --path)
 *   --github-output  Export ext_element, ext_name, ext_type, ext_folder to $GITHUB_OUTPUT
 */

declare(strict_types=1);

// -- Argument parsing ---------------------------------------------------------
$path = '.';
$version = null;
$stability = 'stable';
$sha = null;
$giteaUrl = getenv('GITEA_URL') ?: 'https://git.mokoconsulting.tech';
$org = getenv('GITEA_ORG') ?: '';
$repo = getenv('GITEA_REPO') ?: '';
$outputFile = null;
$githubOutput = false;

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 ($arg === '--stability' && isset($argv[$i + 1])) {
        $stability = $argv[$i + 1];
    }
    if ($arg === '--sha' && isset($argv[$i + 1])) {
        $sha = $argv[$i + 1];
    }
    if ($arg === '--gitea-url' && isset($argv[$i + 1])) {
        $giteaUrl = $argv[$i + 1];
    }
    if ($arg === '--org' && isset($argv[$i + 1])) {
        $org = $argv[$i + 1];
    }
    if ($arg === '--repo' && isset($argv[$i + 1])) {
        $repo = $argv[$i + 1];
    }
    if ($arg === '--output' && isset($argv[$i + 1])) {
        $outputFile = $argv[$i + 1];
    }
    if ($arg === '--github-output') {
        $githubOutput = true;
    }
}

if ($version === null) {
    fwrite(STDERR, "Usage: updates_xml_build.php --path . --version XX.YY.ZZ [--stability stable] [--sha SHA]\n");
    exit(1);
}

$root = realpath($path) ?: $path;

// -- Read platform from .mokogitea/manifest.xml --------------------------------
$detectedPlatform = 'joomla'; // default for backward compat
$detectedName = $repo;
$detectedPackageType = '';
$mokoManifest = "{$root}/.mokogitea/manifest.xml";
if (file_exists($mokoManifest)) {
    $mokoXml = @simplexml_load_file($mokoManifest);
    if ($mokoXml !== false) {
        $rawPlatform = (string)($mokoXml->governance->platform ?? '');
        if ($rawPlatform !== '') {
            $detectedPlatform = match ($rawPlatform) {
                'waas-component' => 'joomla',
                'crm-module' => 'dolibarr',
                default => $rawPlatform,
            };
        }
        $detectedName = (string)($mokoXml->identity->name ?? $repo);
        $detectedPackageType = (string)($mokoXml->build->{"package-type"} ?? '');
    }
}

// -- Locate Joomla manifest ---------------------------------------------------
$manifest = null;

// Priority: pkg_*.xml in src/ > any extension XML in src/ > any in root
$candidates = glob("{$root}/src/pkg_*.xml") ?: [];
foreach ($candidates as $f) {
    if (strpos(file_get_contents($f), '<extension') !== false) {
        $manifest = $f;
        break;
    }
}

if ($manifest === null) {
    $searchDirs = ["{$root}/src", "{$root}"];
    foreach ($searchDirs as $dir) {
        if (!is_dir($dir)) {
            continue;
        }
        foreach (glob("{$dir}/*.xml") ?: [] as $f) {
            if (strpos(file_get_contents($f), '<extension') !== false) {
                $manifest = $f;
                break 2;
            }
        }
    }
}

if ($manifest === null && $detectedPlatform === 'joomla') {
    fwrite(STDERR, "No Joomla XML manifest found in {$root}\n");
    exit(1);
}

// -- Parse extension metadata -------------------------------------------------
$extName = '';
$extType = '';
$extElement = '';
$extClient = '';
$extFolder = '';
$targetPlatform = '';
$phpMinimum = '';

if ($manifest !== null) {
    // Joomla manifest found — parse extension metadata from it
    $xml = file_get_contents($manifest);

    if (preg_match('/<name>([^<]+)<\/name>/', $xml, $m)) {
        $extName = $m[1];
    }
    if (preg_match('/<extension[^>]*type="([^"]+)"/', $xml, $m)) {
        $extType = $m[1];
    }
    if (preg_match('/<element>([^<]+)<\/element>/', $xml, $m)) {
        $extElement = $m[1];
    }
    if (empty($extElement) && preg_match('/<packagename>([^<]+)<\/packagename>/', $xml, $m)) {
        $extElement = $m[1];
    }
    if (empty($extElement) && preg_match('/plugin="([^"]+)"/', $xml, $m)) {
        $extElement = $m[1];
    }
    if (empty($extElement) && preg_match('/module="([^"]+)"/', $xml, $m)) {
        $extElement = $m[1];
    }
    if (empty($extElement)) {
        $fname = strtolower(pathinfo($manifest, PATHINFO_FILENAME));
        if (in_array($fname, ['templatedetails', 'manifest'])) {
            $extElement = strtolower(str_replace([' ', '-'], '', $repo ?: basename($root)));
        } else {
            $extElement = $fname;
        }
    }
    $extElement = preg_replace('/^(pkg_|com_|mod_|plg_\w+_|tpl_|lib_)/', '', $extElement);

    if (preg_match('/<extension[^>]*client="([^"]+)"/', $xml, $m)) {
        $extClient = $m[1];
    }
    if (preg_match('/<extension[^>]*group="([^"]+)"/', $xml, $m)) {
        $extFolder = $m[1];
    }
    if (preg_match('/(<targetplatform[^\/]*\/>)/', $xml, $m)) {
        $targetPlatform = $m[1];
    }
    if (empty($targetPlatform)) {
        $targetPlatform = '<targetplatform name="joomla" version="(5|6)\..*" />';
    }
    if (preg_match('/<php_minimum>([^<]+)<\/php_minimum>/', $xml, $m)) {
        $phpMinimum = $m[1];
    }
} else {
    // Non-Joomla platform — derive metadata from .mokogitea/manifest.xml
    $extName = $detectedName ?: ($repo ?: basename($root));
    $extElement = strtolower(str_replace([' ', '-'], '', $extName));
    $extType = $detectedPackageType ?: 'generic';
    $targetPlatform = "<targetplatform name=\"{$detectedPlatform}\" version=\".*\" />";
}

// Resolve language key names (e.g. PLG_SYSTEM_MOKOJOOMTOS)
if (preg_match('/^[A-Z_]+$/', $extName)) {
    $iniFiles = [];
    $iterator = new RecursiveIteratorIterator(
        new RecursiveDirectoryIterator($root, RecursiveDirectoryIterator::SKIP_DOTS)
    );
    foreach ($iterator as $file) {
        if (preg_match('/\.sys\.ini$/i', $file->getFilename())) {
            $iniFiles[] = $file->getPathname();
        }
    }
    foreach ($iniFiles as $ini) {
        $content = file_get_contents($ini);
        if (preg_match('/^' . preg_quote($extName, '/') . '="([^"]+)"/m', $content, $m)) {
            $extName = $m[1];
            break;
        }
    }
}

// Fallbacks
if (empty($extName)) {
    $extName = $repo ?: basename($root);
}
if (empty($extType)) {
    $extType = 'component';
}

// -- Build type prefix --------------------------------------------------------
$typePrefix = '';
switch ($extType) {
    case 'plugin':
        $typePrefix = "plg_{$extFolder}_";
        break;
    case 'module':
        $typePrefix = 'mod_';
        break;
    case 'component':
        $typePrefix = 'com_';
        break;
    case 'template':
        $typePrefix = 'tpl_';
        break;
    case 'library':
        $typePrefix = 'lib_';
        break;
    case 'package':
        $typePrefix = 'pkg_';
        break;
}

// -- Export to GITHUB_OUTPUT if requested -------------------------------------
if ($githubOutput) {
    $ghOutput = getenv('GITHUB_OUTPUT');
    $lines = [
        "ext_element={$extElement}",
        "ext_name={$extName}",
        "ext_type={$extType}",
        "ext_folder={$extFolder}",
        "type_prefix={$typePrefix}",
    ];
    if ($ghOutput) {
        file_put_contents($ghOutput, implode("\n", $lines) . "\n", FILE_APPEND);
        fwrite(STDERR, "Exported " . count($lines) . " fields to GITHUB_OUTPUT\n");
    } else {
        foreach ($lines as $line) {
            echo "{$line}\n";
        }
    }
}

// -- Stability suffix map -----------------------------------------------------
$stabilitySuffixMap = [
    'stable'      => '',
    'rc'          => '-rc',
    'beta'        => '-beta',
    'alpha'       => '-alpha',
    'development' => '-dev',
];

// Joomla <tags><tag> values — maps to Joomla's stabilityTagToInteger()
$stabilityTagMap = [
    'stable'      => 'stable',
    'rc'          => 'rc',
    'beta'        => 'beta',
    'alpha'       => 'alpha',
    'development' => 'dev',
];

// Gitea release tag names (used in download/info URLs)
$releaseTagMap = [
    'stable'      => 'stable',
    'rc'          => 'release-candidate',
    'beta'        => 'beta',
    'alpha'       => 'alpha',
    'development' => 'development',
];

// -- Build update entries -----------------------------------------------------
// For the primary entry: apply suffix if not stable
$primarySuffix = $stabilitySuffixMap[$stability] ?? '';
$primaryVersion = $version . $primarySuffix;

// Build client tag — Joomla requires <client>site</client> to match updates
// to installed extensions. Without it, extension_id=0 in #__updates.
$clientTag = '';
if (!empty($extClient)) {
    $clientTag = "    <client>{$extClient}</client>";
} else {
    $clientTag = '    <client>site</client>';
}

// Build folder tag
$folderTag = '';
if (!empty($extFolder) && $extType === 'plugin') {
    $folderTag = "    <folder>{$extFolder}</folder>";
}

// PHP minimum tag
$phpTag = '';
if (!empty($phpMinimum)) {
    $phpTag = "    <php_minimum>{$phpMinimum}</php_minimum>";
}

// SHA tag
$shaTag = '';
if (!empty($sha)) {
    $shaTag = "    <sha256>{$sha}</sha256>";
}

/**
 * Build a single <update> entry for a given stability tag
 */
function buildEntry(
    string $tagName,
    string $entryVersion,
    string $entryDownloadUrl,
    string $extName,
    string $extElement,
    string $extType,
    string $clientTag,
    string $folderTag,
    string $infoUrl,
    string $targetPlatform,
    string $phpTag,
    string $shaTag
): string {
    $lines = [];
    $lines[] = '  <update>';
    $lines[] = "    <name>{$extName}</name>";
    $lines[] = "    <description>{$extName} update</description>";
    // Element in updates.xml must match what Joomla stores in #__extensions
    // For packages: pkg_elementname. For plugins: elementname (folder handles grouping).
    $dbElement = ($extType === 'package') ? "pkg_{$extElement}" : $extElement;
    $lines[] = "    <element>{$dbElement}</element>";
    $lines[] = "    <type>{$extType}</type>";
    $lines[] = "    <version>{$entryVersion}</version>";
    if (!empty($clientTag)) {
        $lines[] = $clientTag;
    }
    if (!empty($folderTag)) {
        $lines[] = $folderTag;
    }
    $lines[] = "    <tags><tag>{$tagName}</tag></tags>";
    $lines[] = "    <infourl title=\"{$extName}\">{$infoUrl}</infourl>";
    $lines[] = '    <downloads>';
    $lines[] = "      <downloadurl type=\"full\" format=\"zip\">{$entryDownloadUrl}</downloadurl>";
    $lines[] = '    </downloads>';
    if (!empty($shaTag)) {
        $lines[] = $shaTag;
    }
    $lines[] = "    {$targetPlatform}";
    if (!empty($phpTag)) {
        $lines[] = $phpTag;
    }
    $lines[] = '    <maintainer>Moko Consulting</maintainer>';
    $lines[] = '    <maintainerurl>https://mokoconsulting.tech</maintainerurl>';
    $lines[] = '  </update>';
    return implode("\n", $lines);
}

// -- Determine which channels to write ----------------------------------------
// Stable cascades to all channels; pre-releases cascade down to lower channels.
// Each channel entry represents "latest release available at this stability or higher".
// When stable releases, ALL channels point to stable (it's the newest for everyone).
// When RC releases, rc/beta/alpha/dev point to RC; stable is preserved.
// When dev releases, only dev is updated; everything else is preserved.
$allChannels = ['development', 'alpha', 'beta', 'rc', 'stable'];
$stabilityIndex = array_search($stability === 'development' ? 'development' : $stability, $allChannels);
if ($stabilityIndex === false) {
    $stabilityIndex = 4; // default to stable
}

// Write entries for the current channel AND all lower channels (cascade down)
// All cascaded entries point to the CURRENT release (the highest stability being built)
$entries = [];
$giteaTag = $releaseTagMap[$stability] ?? $stability;
$channelVersion = $version . ($stabilitySuffixMap[$stability] ?? '');
$channelDownloadUrl = "{$giteaUrl}/{$org}/{$repo}/releases/download/{$giteaTag}/{$typePrefix}{$extElement}-{$channelVersion}.zip";
$channelInfoUrl = "{$giteaUrl}/{$org}/{$repo}/releases/tag/{$giteaTag}";

for ($i = 0; $i <= $stabilityIndex; $i++) {
    $channelName = $allChannels[$i];
    $joomlaTag = $stabilityTagMap[$channelName] ?? $channelName;
    // Only attach SHA to the primary channel entry
    $entrySha = ($i === $stabilityIndex) ? $shaTag : '';

    $entries[] = buildEntry(
        $joomlaTag,
        $channelVersion,
        $channelDownloadUrl,
        $extName,
        $extElement,
        $extType,
        $clientTag,
        $folderTag,
        $channelInfoUrl,
        $targetPlatform,
        $phpTag,
        $entrySha
    );
}

// -- Preserve existing entries for channels not being updated -----------------
$dest = $outputFile ?? "{$root}/updates.xml";
$preservedEntries = [];

if (file_exists($dest)) {
    $existingXml = @simplexml_load_file($dest);
    if ($existingXml) {
        // Joomla tags we're writing — don't preserve these
        $writtenChannels = [];
        for ($i = 0; $i <= $stabilityIndex; $i++) {
            $writtenChannels[] = $stabilityTagMap[$allChannels[$i]] ?? $allChannels[$i];
        }
        // Also match legacy/alternate tag names (e.g. 'development' = 'dev')
        $writtenChannels[] = 'development'; // alias for 'dev'

        foreach ($existingXml->update as $existingUpdate) {
            $existingTag = '';
            if (isset($existingUpdate->tags->tag)) {
                $existingTag = (string) $existingUpdate->tags->tag;
            }
            // Keep entries for channels we're NOT overwriting
            if (!empty($existingTag) && !in_array($existingTag, $writtenChannels, true)) {
                $preservedEntries[] = '  ' . trim($existingUpdate->asXML());
            }
        }
    }
}

// -- Write updates.xml --------------------------------------------------------
$year = date('Y');
$output = <<<XML
<?xml version='1.0' encoding='UTF-8'?>
<!-- Copyright (C) {$year} Moko Consulting <hello@mokoconsulting.tech>
 SPDX-License-Identifier: GPL-3.0-or-later
 VERSION: {$primaryVersion}
 -->

<updates>
XML;
$allEntries = array_merge($preservedEntries, $entries);
$output .= "\n" . implode("\n", $allEntries) . "\n</updates>\n";

$dest = $outputFile ?? "{$root}/updates.xml";
file_put_contents($dest, $output);

$channelCount = count($entries);
echo "updates.xml: {$primaryVersion} ({$channelCount} channel(s), stability={$stability})\n";
echo "Output: {$dest}\n";
exit(0);