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

/**
 * Copyright (C) 2026 Moko Consulting <hello@mokoconsulting.tech>
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 * DEFGROUP: mokocli.Validate
 * INGROUP: mokocli
 * REPO: https://git.mokoconsulting.tech/MokoConsulting/mokocli
 * PATH: /validate/check_repo_health.php
 * BRIEF: Repository health checker — validates against current Moko standards (wiki-first, no docs/)
 *
 * Categories:
 *   Required Files (40)  — README, LICENSE, CHANGELOG, CONTRIBUTING, SECURITY, CLAUDE.md, .gitignore, Makefile
 *   Manifest & Config (20) — .mokocli, workflows, README quality, CODE_OF_CONDUCT, .gitignore content, CLAUDE.md quality
 *   Documentation (15)   — wiki-first: docs/ must NOT exist, CHANGELOG [Unreleased]
 *   License Headers (15) — Copyright, SPDX, FILE INFORMATION in source files
 *   Disallowed (10)      — TODO.md, vendor/, node_modules/, .claude/, wiki/, .mcp.json, renovate.json, profile.ps1
 *   Workflows (15)       — repo-health, sync-roadmap-wiki, CI/deploy
 *   Security (20)        — SECURITY.md, scanning, no renovate.json, no secrets
 *   Rulesets (15)        — main protected, dev branch, rulesets
 *   Deployment (10)      — deploy workflow, build system
 *
 * Note: This file uses curl_init for HTTP requests to the Gitea API.
 * No shell commands or child processes are invoked.
 */

declare(strict_types=1);

require_once __DIR__ . '/../vendor/autoload.php';

use MokoCli\{AuditLogger, CliFramework, MetricsCollector, PluginFactory};

/**
 * Repository Health Checker
 *
 * Validates repository structure, standards compliance, and configuration
 * against mokocli definitions. Produces a health score and report.
 *
 * @since 04.00.00
 */
class RepoHealthChecker extends CliFramework
{
    private AuditLogger $logger;
    private MetricsCollector $metrics;
    private string $apiBaseUrl = 'https://git.mokoconsulting.tech/api/v1';

    private array $results = [
        'categories' => [], 'checks' => [],
        'score' => 0, 'max_score' => 0, 'percentage' => 0.0, 'level' => 'unknown',
    ];

    protected function configure(): void
    {
        $this->setDescription('Check repository health against Moko standards');
        $this->addArgument('--path', 'Repository path', '.');
        $this->addArgument('--threshold', 'Minimum health %', '70');
        $this->addArgument('--json', 'JSON output', false);
        $this->addArgument('--create-issue', 'Create Gitea issue', false);
        $this->addArgument('--repo', 'owner/repo', '');
    }

    protected function initialize(): void
    {
        parent::initialize();
        $this->logger = new AuditLogger('repo_health_checker');
        $this->metrics = new MetricsCollector();
        $config = \MokoCli\Config::load();
        $this->apiBaseUrl = rtrim($config->getString('gitea.url', 'https://git.mokoconsulting.tech'), '/') . '/api/v1';
    }

    protected function run(): int
    {
        $path = $this->getArgument('--path');
        $threshold = (float)$this->getArgument('--threshold');
        $repo = $this->getArgument('--repo');

        $this->section('Required Files');
        $this->checkRequiredFiles($path);
        $this->section('Manifest & Config');
        $this->checkManifest($path);
        $this->section('Documentation');
        $this->checkDocumentation($path);
        $this->section('License Headers');
        $this->checkLicenseHeaders($path);
        $this->section('Disallowed Items');
        $this->checkDisallowed($path);
        $this->section('Workflows');
        $this->checkWorkflows($path);
        $this->section('Security');
        $this->checkSecurity($path);
        $this->section('Rulesets');
        $this->checkRulesets($repo);
        $this->section('Deployment');
        $this->checkDeployment($path);

        $this->calculateScore();

        if ($this->getArgument('--json')) {
            echo json_encode($this->results, JSON_PRETTY_PRINT) . PHP_EOL;
        } else {
            $this->displayResults();
        }

        if ($this->getArgument('--create-issue') && $repo) {
            $this->createHealthIssue($repo);
        }

        return $this->results['percentage'] >= $threshold ? 0 : 1;
    }

    // ── Required Files (40 pts) ──────────────────────────────────────

    private function checkRequiredFiles(string $p): void
    {
        $cat = 'required_files';
        $this->initCategory($cat, 'Required Files', 40);

        foreach (
            [
            'README.md' => 8, 'LICENSE' => 8, 'CHANGELOG.md' => 5,
            'CONTRIBUTING.md' => 4, 'SECURITY.md' => 4,
            'CLAUDE.md' => 5, '.gitignore' => 3,
            'Makefile' => 3,
            ] as $file => $pts
        ) {
            $this->addCheck($cat, "{$file} exists", file_exists("{$p}/{$file}"), $pts);
        }

        // Negative checks — files that should NOT be committed
        foreach (['.mcp.json', 'TODO.md', 'renovate.json'] as $bad) {
            if (file_exists("{$p}/{$bad}")) {
                $this->addCheck($cat, "{$bad} should not be committed", false, 0);
            }
        }
        if (is_dir("{$p}/.claude")) {
            $this->addCheck($cat, '.claude/ should not be committed', false, 0);
        }
        if (is_dir("{$p}/wiki")) {
            $this->addCheck($cat, 'wiki/ should not be committed', false, 0);
        }
    }

    // ── Manifest & Config (15 pts) ───────────────────────────────────

    private function checkManifest(string $p): void
    {
        $cat = 'manifest';
        $this->initCategory($cat, 'Manifest & Config', 15);

        $this->addCheck(
            $cat,
            '.mokogitea/.mokocli manifest',
            file_exists("{$p}/.gitea/.mokocli"),
            5
        );
        $this->addCheck(
            $cat,
            'Workflows directory',
            is_dir("{$p}/.gitea/workflows") || is_dir("{$p}/.github/workflows"),
            5
        );
        $this->addCheck(
            $cat,
            'README >500 chars',
            file_exists("{$p}/README.md") && strlen(file_get_contents("{$p}/README.md")) > 500,
            3
        );
        $this->addCheck(
            $cat,
            'CODE_OF_CONDUCT.md',
            file_exists("{$p}/CODE_OF_CONDUCT.md"),
            2
        );

        // .gitignore must contain key exclusions
        $gitignoreOk = false;
        if (file_exists("{$p}/.gitignore")) {
            $gi = file_get_contents("{$p}/.gitignore");
            $gitignoreOk = str_contains($gi, '.claude/') && str_contains($gi, 'TODO.md')
                && str_contains($gi, '*.min.css') && str_contains($gi, '*.min.js')
                && str_contains($gi, 'wiki/');
        }
        $this->addCheck(
            $cat,
            '.gitignore has .claude/, TODO.md, *.min.css/js, wiki/',
            $gitignoreOk,
            3
        );

        // CLAUDE.md should have project overview
        $claudeOk = false;
        if (file_exists("{$p}/CLAUDE.md")) {
            $claude = file_get_contents("{$p}/CLAUDE.md");
            $claudeOk = strlen($claude) > 200 && str_contains($claude, 'mokocli');
        }
        $this->addCheck(
            $cat,
            'CLAUDE.md has project context + mokocli ref',
            $claudeOk,
            2
        );
    }

    // ── Documentation: Wiki-First (15 pts) ───────────────────────────

    private function checkDocumentation(string $p): void
    {
        $cat = 'documentation';
        $this->initCategory($cat, 'Documentation (Wiki-First)', 15);

        $this->addCheck(
            $cat,
            'No docs/ directory (wiki-first)',
            !is_dir("{$p}/docs"),
            10
        );

        // CHANGELOG must have [Unreleased] section for release workflow
        $hasUnreleased = false;
        if (file_exists("{$p}/CHANGELOG.md")) {
            $cl = file_get_contents("{$p}/CHANGELOG.md");
            $hasUnreleased = (bool)preg_match('/##\s*\[?Unreleased/i', $cl);
        }
        $this->addCheck(
            $cat,
            'CHANGELOG has [Unreleased] section',
            $hasUnreleased,
            5
        );
    }

    // ── License Headers (15 pts) ────────────────────────────────────

    private function checkLicenseHeaders(string $p): void
    {
        $cat = 'license_headers';
        $this->initCategory($cat, 'License Headers', 15);

        // Collect source files by scanning directories
        $extensions = ['php', 'ts', 'css', 'yml', 'yaml'];
        $files = [];
        $dirs = [$p];
        while ($dirs) {
            $dir = array_pop($dirs);
            $base = basename($dir);
            if (in_array($base, ['vendor', 'node_modules', 'dist', '.git'], true)) {
                continue;
            }
            $items = @scandir($dir);
            if (!$items) {
                continue;
            }
            foreach ($items as $item) {
                if ($item === '.' || $item === '..') {
                    continue;
                }
                $full = "{$dir}/{$item}";
                if (is_dir($full)) {
                    $dirs[] = $full;
                    continue;
                }
                $ext = pathinfo($item, PATHINFO_EXTENSION);
                if (in_array($ext, $extensions, true)) {
                    $files[] = $full;
                }
            }
        }

        $total = count($files);
        $withCopyright = 0;
        $withSpdx = 0;
        $withFileInfo = 0;

        foreach ($files as $fullPath) {
            $header = '';
            $handle = @fopen($fullPath, 'r');
            if (!$handle) {
                continue;
            }
            for ($j = 0; $j < 20 && !feof($handle); $j++) {
                $header .= (string) fgets($handle);
            }
            fclose($handle);

            if (str_contains($header, 'Copyright')) {
                $withCopyright++;
            }
            if (str_contains($header, 'SPDX-License-Identifier:')) {
                $withSpdx++;
            }
            if (
                str_contains($header, 'FILE INFORMATION') ||
                str_contains($header, 'DEFGROUP:') ||
                str_contains($header, 'BRIEF:')
            ) {
                $withFileInfo++;
            }
        }

        if ($total === 0) {
            $this->addCheck($cat, 'No source files found', true, 15);
            return;
        }

        $copyrightPct = $withCopyright / $total * 100;
        $spdxPct = $withSpdx / $total * 100;
        $fileInfoPct = $withFileInfo / $total * 100;

        $this->addCheck(
            $cat,
            sprintf('Copyright headers (%.0f%% of %d files)', $copyrightPct, $total),
            $copyrightPct >= 80,
            5
        );
        $this->addCheck(
            $cat,
            sprintf('SPDX-License-Identifier (%.0f%%)', $spdxPct),
            $spdxPct >= 80,
            5
        );
        $this->addCheck(
            $cat,
            sprintf('FILE INFORMATION block (%.0f%%)', $fileInfoPct),
            $fileInfoPct >= 70,
            5
        );
    }

    // ── Disallowed Items (10 pts) ────────────────────────────────────

    private function checkDisallowed(string $p): void
    {
        $cat = 'disallowed';
        $this->initCategory($cat, 'Disallowed Items', 10);

        $this->addCheck(
            $cat,
            'No TODO.md (use issues)',
            !file_exists("{$p}/TODO.md"),
            2
        );
        $this->addCheck(
            $cat,
            'No vendor/ committed',
            !is_dir("{$p}/vendor") || file_exists("{$p}/vendor/.gitkeep"),
            2
        );
        $this->addCheck(
            $cat,
            'No node_modules/',
            !is_dir("{$p}/node_modules"),
            2
        );
        $this->addCheck(
            $cat,
            'No .claude/ committed',
            !is_dir("{$p}/.claude"),
            1
        );
        $this->addCheck(
            $cat,
            'No .mcp.json committed',
            !file_exists("{$p}/.mcp.json"),
            1
        );
        $this->addCheck(
            $cat,
            'No renovate.json',
            !file_exists("{$p}/renovate.json"),
            1
        );
        $this->addCheck(
            $cat,
            'No profile.ps1',
            !file_exists("{$p}/profile.ps1"),
            1
        );
    }

    // ── Workflows (15 pts) ───────────────────────────────────────────

    private function checkWorkflows(string $p): void
    {
        $cat = 'workflows';
        $this->initCategory($cat, 'Workflows', 15);

        $wf = is_dir("{$p}/.gitea/workflows") ? "{$p}/.gitea/workflows" : "{$p}/.github/workflows";
        $exists = is_dir($wf);

        $this->addCheck($cat, 'Workflows directory', $exists, 5);
        $this->addCheck(
            $cat,
            'repo-health.yml',
            $exists && file_exists("{$wf}/repo-health.yml"),
            3
        );
        $this->addCheck(
            $cat,
            'sync-roadmap-wiki.yml',
            $exists && file_exists("{$wf}/sync-roadmap-wiki.yml"),
            3
        );
        $this->addCheck(
            $cat,
            'CI/deploy workflow',
            $exists && (!empty(glob("{$wf}/ci*.yml")) || !empty(glob("{$wf}/deploy*.yml")) || !empty(glob("{$wf}/build*.yml"))),
            4
        );
    }

    // ── Security (20 pts) ────────────────────────────────────────────

    private function checkSecurity(string $p): void
    {
        $cat = 'security';
        $this->initCategory($cat, 'Security', 20);

        $this->addCheck($cat, 'SECURITY.md', file_exists("{$p}/SECURITY.md"), 5);

        $wf = is_dir("{$p}/.gitea/workflows") ? "{$p}/.gitea/workflows" : "{$p}/.github/workflows";
        $hasScan = is_dir($wf) && (!empty(glob("{$wf}/*gitleaks*.yml")) || !empty(glob("{$wf}/*trivy*.yml"))
            || !empty(glob("{$wf}/*security*.yml")));
        $this->addCheck($cat, 'Security scanning workflow', $hasScan, 5);

        $this->addCheck(
            $cat,
            'No renovate.json (removed from ecosystem)',
            !file_exists("{$p}/renovate.json"),
            5
        );

        $secrets = false;
        foreach (['.env', '.env.local', 'credentials.json'] as $s) {
            if (file_exists("{$p}/{$s}")) {
                $secrets = true;
                break;
            }
        }
        $this->addCheck($cat, 'No secret files committed', !$secrets, 5);
    }

    // ── Rulesets (15 pts) ────────────────────────────────────────────

    private function checkRulesets(string $repo): void
    {
        $cat = 'rulesets';
        $this->initCategory($cat, 'Branch Rulesets', 15);

        if (!$repo) {
            $this->addCheck($cat, 'Main branch protected', false, 5);
            $this->addCheck($cat, 'Dev branch exists', false, 5);
            $this->addCheck($cat, 'Branch rulesets configured', false, 5);
            return;
        }

        $token = getenv('GH_TOKEN') ?: getenv('GITEA_TOKEN') ?: '';
        if (!$token) {
            $this->addCheck($cat, 'Main branch protected', false, 5);
            $this->addCheck($cat, 'Dev branch exists', false, 5);
            $this->addCheck($cat, 'Branch rulesets configured', false, 5);
            return;
        }

        // Gitea uses /branch_protections endpoint (not /branches/main/protection)
        $protections = $this->apiFetch("repos/{$repo}/branch_protections", $token);
        $mainProtected = false;
        foreach ($protections as $bp) {
            if (($bp['branch_name'] ?? '') === 'main') {
                $mainProtected = true;
                break;
            }
        }
        $this->addCheck($cat, 'Main branch protected', $mainProtected, 5);

        $this->addCheck(
            $cat,
            'Dev branch exists',
            $this->apiCheck("repos/{$repo}/branches/dev", $token),
            5
        );

        $this->addCheck($cat, 'Branch protections configured', count($protections) > 0, 5);
    }

    // ── Deployment (10 pts) ──────────────────────────────────────────

    private function checkDeployment(string $p): void
    {
        $cat = 'deployment';
        $this->initCategory($cat, 'Deployment', 10);

        $wf = is_dir("{$p}/.gitea/workflows") ? "{$p}/.gitea/workflows" : "{$p}/.github/workflows";
        $this->addCheck(
            $cat,
            'Deploy workflow',
            is_dir($wf) && !empty(glob("{$wf}/deploy*.yml")),
            5
        );
        $this->addCheck(
            $cat,
            'Build system',
            file_exists("{$p}/Makefile") || file_exists("{$p}/package.json") || file_exists("{$p}/composer.json"),
            5
        );
    }

    // ── Helpers ──────────────────────────────────────────────────────

    private function initCategory(string $key, string $name, int $maxPts): void
    {
        $this->results['categories'][$key] = [
            'name' => $name, 'max_points' => $maxPts,
            'earned_points' => 0, 'checks_passed' => 0, 'checks_failed' => 0,
        ];
    }

    private function addCheck(string $cat, string $name, bool $passed, int $pts): void
    {
        $this->results['checks'][] = ['category' => $cat, 'name' => $name, 'passed' => $passed, 'points' => $pts];
        if ($passed) {
            $this->results['categories'][$cat]['earned_points'] += $pts;
            $this->results['categories'][$cat]['checks_passed']++;
        } else {
            $this->results['categories'][$cat]['checks_failed']++;
        }
    }

    private function calculateScore(): void
    {
        $earned = $max = 0;
        foreach ($this->results['categories'] as $c) {
            $earned += $c['earned_points'];
            $max += $c['max_points'];
        }
        $this->results['score'] = $earned;
        $this->results['max_score'] = $max;
        $this->results['percentage'] = $max > 0 ? ($earned / $max * 100) : 0;
        $pct = $this->results['percentage'];
        $this->results['level'] = match (true) {
            $pct >= 90 => 'excellent', $pct >= 80 => 'good',
            $pct >= 70 => 'fair', $pct >= 60 => 'poor', default => 'critical',
        };
    }

    private function displayResults(): void
    {
        $this->section('Results');
        foreach ($this->results['checks'] as $c) {
            $this->status($c['passed'], $c['name'], $c['passed'] ? '' : "{$c['points']} pts");
        }
        $p = count(array_filter($this->results['checks'], fn($c) => $c['passed']));
        $f = count(array_filter($this->results['checks'], fn($c) => !$c['passed']));
        $this->printSummary($p, $f, $this->elapsed());
        $this->log(sprintf(
            "Score: %d/%d (%.1f%%) — %s",
            $this->results['score'],
            $this->results['max_score'],
            $this->results['percentage'],
            strtoupper($this->results['level'])
        ));
    }

    private function apiCheck(string $path, string $token): bool
    {
        $ch = curl_init("{$this->apiBaseUrl}/{$path}");
        curl_setopt_array($ch, [
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_HTTPHEADER => ["Authorization: token {$token}", 'User-Agent: mokocli'],
        ]);
        curl_exec($ch);
        $s = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        return $s === 200;
    }

    private function apiFetch(string $path, string $token): array
    {
        $ch = curl_init("{$this->apiBaseUrl}/{$path}");
        curl_setopt_array($ch, [
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_HTTPHEADER => ["Authorization: token {$token}", 'User-Agent: mokocli'],
        ]);
        $body = (string)curl_exec($ch);
        $s = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        return $s === 200 ? (json_decode($body, true) ?? []) : [];
    }

    private function createHealthIssue(string $repo): void
    {
        $pct = round($this->results['percentage'], 1);
        $title = "Repository Health: {$this->results['level']} ({$pct}%)";
        $body = "## Health Check\n\nScore: {$this->results['score']}/{$this->results['max_score']} ({$pct}%)\n\n";
        $body .= "| Category | Score |\n|---|---|\n";
        foreach ($this->results['categories'] as $c) {
            $body .= "| {$c['name']} | {$c['earned_points']}/{$c['max_points']} |\n";
        }
        $failed = array_filter($this->results['checks'], fn($c) => !$c['passed']);
        if ($failed) {
            $body .= "\n### Failed\n";
            foreach ($failed as $c) {
                $body .= "- {$c['name']} ({$c['points']}pts)\n";
            }
        }
        $token = getenv('GH_TOKEN') ?: getenv('GITEA_TOKEN') ?: '';
        if (!$token) {
            return;
        }
        $ch = curl_init("{$this->apiBaseUrl}/repos/{$repo}/issues");
        curl_setopt_array($ch, [CURLOPT_RETURNTRANSFER => true, CURLOPT_POST => true,
            CURLOPT_POSTFIELDS => json_encode(['title' => $title, 'body' => $body]),
            CURLOPT_HTTPHEADER => ["Authorization: token {$token}", 'Content-Type: application/json', 'User-Agent: mokocli']]);
        curl_exec($ch);
        curl_close($ch);
    }
}

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