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

/* Copyright (C) 2026 Moko Consulting <hello@mokoconsulting.tech>
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 * FILE INFORMATION
 * DEFGROUP: mokocli.CLI
 * INGROUP: mokocli
 * REPO: https://git.mokoconsulting.tech/MokoConsulting/mokocli
 * PATH: /cli/theme_vars_check.php
 * BRIEF: Validate a client MokoOnyx theme package — required CSS variables
 *        (derived dynamically from the MokoOnyx standard theme) are defined in
 *        the client's light/dark custom CSS, required files exist, the manifest
 *        is sane, and (optionally) the repo's Gitea metadata is set.
 *
 * Standalone (no CliFramework dependency) so it runs even when the shared
 * framework autoloader is unavailable.
 *
 * Usage:
 *   php theme_vars_check.php --path . --reference /tmp/mokoonyx [--github-output]
 *       [--api-base <url> --repo <owner/repo> --token <token>]
 */

declare(strict_types=1);

$opts = getopt('', ['path:', 'reference:', 'github-output', 'api-base:', 'repo:', 'token:']);
$path = isset($opts['path']) && is_string($opts['path']) && $opts['path'] !== '' ? $opts['path'] : '.';
$ref  = isset($opts['reference']) && is_string($opts['reference']) ? $opts['reference'] : '';
$gh   = array_key_exists('github-output', $opts);

$root = realpath($path);
if ($root === false) { $root = $path; }

$src = is_dir("$root/src") ? "$root/src" : (is_dir("$root/source") ? "$root/source" : null);
if ($src === null) {
    fwrite(STDERR, "ERROR: no src/ or source/ directory under $root\n");
    exit(1);
}

$errors  = 0;
$summary = [];
$fail = function (string $msg) use (&$errors, &$summary): void {
    echo "  [FAIL] $msg\n";
    $summary[] = "FAIL: $msg";
    $errors++;
};
$ok    = function (string $msg): void { echo "  [ok]   $msg\n"; };
$note  = function (string $msg): void { echo "  [note] $msg\n"; };

/** Extract the set of CSS custom-property names DEFINED in a CSS string. */
$definedVars = static function (string $css): array {
    // Matches "--name:" at a declaration position (not var(--name) uses).
    preg_match_all('/(?:^|[\s;{])(--[a-z0-9_-]+)\s*:/i', $css, $m);
    return array_values(array_unique(array_map('strtolower', $m[1] ?? [])));
};

/** Find the MokoOnyx standard theme file for a mode inside a reference checkout. */
$findStandard = static function (string $ref, string $mode): ?string {
    if ($ref === '') { return null; }
    foreach ([
        "$ref/source/media/css/theme/$mode.standard.css",
        "$ref/media/templates/site/mokoonyx/css/theme/$mode.standard.css",
        "$ref/$mode.standard.css",
    ] as $cand) {
        if (is_file($cand)) { return $cand; }
    }
    return null;
};

$cssDir   = "$src/media/templates/site/mokoonyx/css";
$themeDir = "$cssDir/theme";
$manifest = "$src/templateDetails.xml";
$customs  = ['light' => "$themeDir/light.custom.css", 'dark' => "$themeDir/dark.custom.css"];

echo "MokoOnyx theme validation: $src\n\n";

// 1) Required files -------------------------------------------------------
echo "=== Required files ===\n";
$requiredFiles = [
    'templateDetails.xml'    => $manifest,
    'theme/light.custom.css' => $customs['light'],
    'theme/dark.custom.css'  => $customs['dark'],
    'user.css'               => "$cssDir/user.css",
];
foreach ($requiredFiles as $label => $file) {
    is_file($file) ? $ok("$label present") : $fail("missing required file: $label");
}

// 2) CSS variables — required set derived from the MokoOnyx standard theme
echo "\n=== CSS variables vs MokoOnyx standard theme ===\n";
if ($ref === '') {
    $note('no --reference given; skipping variable parity check');
} else {
    foreach ($customs as $mode => $customFile) {
        $std = $findStandard($ref, $mode);
        if ($std === null) {
            $fail("$mode: standard theme not found under reference '$ref'");
            continue;
        }
        if (!is_file($customFile)) {
            continue; // already reported missing
        }
        $required = $definedVars((string) file_get_contents($std));
        $defined  = $definedVars((string) file_get_contents($customFile));
        $missing  = array_values(array_diff($required, $defined));
        if ($missing) {
            $shown = array_slice($missing, 0, 15);
            $more  = count($missing) - count($shown);
            $fail("$mode mode missing " . count($missing) . '/' . count($required)
                . ' standard variable(s): ' . implode(', ', $shown) . ($more > 0 ? " (+$more more)" : ''));
        } else {
            $ok("$mode mode defines all " . count($required) . ' standard variables');
        }
    }
}

// 3) Manifest sanity ------------------------------------------------------
echo "\n=== Manifest (templateDetails.xml) ===\n";
if (is_file($manifest)) {
    $xml = @simplexml_load_file($manifest);
    if ($xml === false) {
        $fail('templateDetails.xml is not well-formed XML');
    } else {
        $version = isset($xml->version) ? trim((string) $xml->version) : '';
        $version !== '' ? $ok("version $version") : $fail('<version> is missing or empty');

        $server = isset($xml->updateservers->server) ? trim((string) $xml->updateservers->server) : '';
        if ($server === '') {
            $fail('<updateservers><server> is missing');
        } elseif (strpos($server, '/raw/branch/') !== false) {
            $fail('update server uses a legacy raw/branch URL; use the dynamic MokoGitea feed');
        } else {
            $ok("update server: $server");
        }

        isset($xml->dlid) ? $ok('<dlid> license-key field present')
            : $fail('<dlid prefix="dlid=" suffix=""/> is missing');

        // Required manifest fields
        foreach (['name', 'element', 'author', 'creationDate'] as $field) {
            (isset($xml->$field) && trim((string) $xml->$field) !== '')
                ? $ok("<$field> present")
                : $fail("<$field> is missing or empty");
        }

        // scriptfile (if declared) must exist
        if (isset($xml->scriptfile)) {
            $sf = trim((string) $xml->scriptfile);
            is_file("$src/$sf") ? $ok("scriptfile '$sf' present")
                : $fail("<scriptfile> references '$sf' which is not in src/");
        }

        // Fileset integrity — every referenced file/folder must exist in src/
        if (isset($xml->fileset)) {
            $missingFs = [];
            foreach ($xml->fileset->files as $files) {
                $folder  = trim((string) ($files['folder'] ?? ''));
                $baseDir = $folder !== '' ? "$src/$folder" : $src;
                foreach ($files->filename as $fn) {
                    $rel = ($folder !== '' ? "$folder/" : '') . trim((string) $fn);
                    if (!is_file("$baseDir/" . trim((string) $fn))) { $missingFs[] = $rel; }
                }
                foreach ($files->folder as $fd) {
                    $rel = ($folder !== '' ? "$folder/" : '') . trim((string) $fd) . '/';
                    if (!is_dir("$baseDir/" . trim((string) $fd))) { $missingFs[] = $rel; }
                }
            }
            if ($missingFs) {
                $shown = array_slice($missingFs, 0, 10);
                $more  = count($missingFs) - count($shown);
                $fail('fileset references ' . count($missingFs) . ' missing path(s): '
                    . implode(', ', $shown) . ($more > 0 ? " (+$more more)" : ''));
            } else {
                $ok('all fileset paths exist in src/');
            }
        }
    }
}

// 4) Repository metadata via Gitea API (optional) -------------------------
$apiBase = isset($opts['api-base']) && is_string($opts['api-base']) ? rtrim($opts['api-base'], '/') : '';
$repoSlug = isset($opts['repo']) && is_string($opts['repo']) ? trim($opts['repo']) : '';
$token   = isset($opts['token']) && is_string($opts['token']) ? trim($opts['token']) : '';
if ($apiBase !== '' && $repoSlug !== '' && $token !== '') {
    echo "\n=== Repository metadata (Gitea API) ===\n";
    $url  = "$apiBase/repos/$repoSlug";
    $ctx  = stream_context_create(['http' => [
        'method'        => 'GET',
        'header'        => "Authorization: token $token\r\nAccept: application/json\r\n",
        'ignore_errors' => true,
        'timeout'       => 15,
    ]]);
    $resp = @file_get_contents($url, false, $ctx);
    $data = $resp !== false ? json_decode($resp, true) : null;
    if (!is_array($data) || !isset($data['name'])) {
        $fail("could not read repo metadata from Gitea API ($url)");
    } else {
        trim((string) ($data['description'] ?? '')) !== '' ? $ok('description set')
            : $fail('repo description is empty');
        trim((string) ($data['website'] ?? '')) !== '' ? $ok('website set: ' . $data['website'])
            : $fail('repo website is empty');
        $topics = $data['topics'] ?? [];
        (is_array($topics) && count($topics) > 0) ? $ok(count($topics) . ' topic(s) set')
            : $fail('repo has no topics');
        ((string) ($data['default_branch'] ?? '')) === 'main' ? $ok('default branch is main')
            : $fail("default branch is '" . ($data['default_branch'] ?? '') . "' (expected main)");
    }
} else {
    echo "\n=== Repository metadata (Gitea API) ===\n";
    $note('API args not provided; skipping repo metadata check');
}

// Output / exit -----------------------------------------------------------
echo "\n";
if ($gh && ($f = getenv('GITHUB_STEP_SUMMARY'))) {
    $md = "## MokoOnyx Theme Validation\n\n";
    $md .= $errors === 0
        ? "All checks passed.\n"
        : implode("\n", array_map(static fn ($l) => "- $l", $summary)) . "\n";
    @file_put_contents($f, $md, FILE_APPEND);
}

if ($errors > 0) {
    echo "FAILED: $errors issue(s) found.\n";
    exit(1);
}
echo "All MokoOnyx theme validation checks passed.\n";
exit(0);