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

/* Copyright (C) 2026 Moko Consulting <hello@mokoconsulting.tech>
 *
 * This file is part of a Moko Consulting project.
 *
 * 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/client_provision.php
 * VERSION: 01.00.00
 * BRIEF: Provision a new client environment end-to-end
 */

declare(strict_types=1);

final class ClientProvision
{
    private string $giteaUrl = 'https://git.mokoconsulting.tech';
    private string $giteaToken = '';
    private string $grafanaUrl = '';
    private string $grafanaToken = '';
    private string $configFile = '';
    private string $step = '';
    private bool $dryRun = false;
    /** @var array<string, mixed> */
    private array $config = [];
    private string $org = '';
    private string $repoName = '';

    public function run(): int
    {
        $this->parseArgs();

        if ($this->configFile === '') {
            $this->log('ERROR: --config is required.');
            $this->printUsage();
            return 1;
        }

        if (!file_exists($this->configFile)) {
            $this->log("ERROR: Not found: {$this->configFile}");
            return 1;
        }

        $json = file_get_contents($this->configFile);
        $this->config = json_decode($json, true);

        if (!is_array($this->config)) {
            $this->log('ERROR: Invalid JSON in config file.');
            return 1;
        }

        $this->giteaToken = $this->config['gitea_token']
            ?? getenv('GA_TOKEN') ?: '';
        $this->grafanaUrl = $this->config['grafana_url']
            ?? getenv('GRAFANA_URL') ?: '';
        $this->grafanaToken = $this->config['grafana_token']
            ?? getenv('GRAFANA_TOKEN') ?: '';
        $this->giteaUrl = $this->config['gitea_url']
            ?? $this->giteaUrl;

        if ($this->giteaToken === '') {
            $this->log('ERROR: gitea_token or GA_TOKEN required.');
            return 1;
        }

        $this->org = $this->config['org'] ?? '';
        $clientName = $this->config['name'] ?? '';

        if ($this->org === '' || $clientName === '') {
            $this->log('ERROR: "org" and "name" required in config.');
            return 1;
        }

        $this->repoName = 'client-waas-' . $clientName;

        $this->log("=== Client Provisioning: {$clientName} ===");
        $this->log("  Org:  {$this->org}");
        $this->log("  Repo: {$this->repoName}");

        if ($this->dryRun) {
            $this->log('  Mode: DRY RUN');
        }

        $this->log('');

        $steps = [
            'repo' => 'createRepo',
            'variables' => 'setVariables',
            'secrets' => 'setSecrets',
            'monitoring' => 'setupMonitoring',
            'summary' => 'printSummary',
        ];

        $exitCode = 0;

        foreach ($steps as $name => $method) {
            if ($this->step !== '' && $this->step !== $name) {
                continue;
            }

            $result = $this->$method();

            if ($result !== 0) {
                $exitCode = 1;
            }
        }

        return $exitCode;
    }

    private function createRepo(): int
    {
        $this->log('[1/5] Creating repository...');

        $check = $this->giteaApi(
            'GET',
            "/api/v1/repos/{$this->org}/{$this->repoName}"
        );

        if ($check['code'] === 200) {
            $this->log("  SKIP: repo already exists");
            return 0;
        }

        if ($this->dryRun) {
            $this->log(
                "  WOULD CREATE: {$this->org}/{$this->repoName}"
            );
            return 0;
        }

        $payload = json_encode([
            'owner' => $this->org,
            'name' => $this->repoName,
            'description' => ($this->config['name'] ?? '') . ' WaaS site',
            'private' => true,
            'git_content' => true,
            'topics' => true,
            'labels' => true,
        ]);

        $resp = $this->giteaApi(
            'POST',
            '/api/v1/repos/MokoConsulting/'
            . 'Template-Client-WaaS/generate',
            $payload
        );

        if ($resp['code'] < 200 || $resp['code'] >= 300) {
            $this->log("  ERROR: HTTP {$resp['code']}");
            return 1;
        }

        $this->log('  OK: Repo created');

        $this->giteaApi(
            'POST',
            "/api/v1/repos/{$this->org}/{$this->repoName}/branches",
            json_encode([
                'new_branch_name' => 'dev',
                'old_branch_name' => 'main',
            ])
        );

        $this->log('  OK: dev branch created');

        return 0;
    }

    private function setVariables(): int
    {
        $this->log('[2/5] Setting repo variables...');

        $vars = $this->config['variables'] ?? [];

        if (empty($vars)) {
            $this->log('  SKIP: No variables in config');
            return 0;
        }

        $errors = 0;
        $api = "/api/v1/repos/{$this->org}/{$this->repoName}"
            . "/actions/variables";

        foreach ($vars as $name => $value) {
            if ($this->dryRun) {
                $display = strlen($value) > 40
                    ? substr($value, 0, 37) . '...' : $value;
                $this->log("  WOULD SET: {$name} = {$display}");
                continue;
            }

            $ok = $this->setOrCreateVariable($api, $name, $value);

            if ($ok) {
                $this->log("  OK: {$name}");
            } else {
                $this->log("  ERROR: {$name}");
                $errors++;
            }
        }

        return $errors > 0 ? 1 : 0;
    }

    private function setSecrets(): int
    {
        $this->log('[3/5] Setting repo secrets...');

        $secrets = $this->config['secrets'] ?? [];

        if (empty($secrets)) {
            $this->log('  SKIP: No secrets in config');
            return 0;
        }

        $errors = 0;
        $api = "/api/v1/repos/{$this->org}/{$this->repoName}"
            . "/actions/secrets";

        foreach ($secrets as $name => $value) {
            if (str_starts_with($value, '@')) {
                $keyPath = substr($value, 1);

                if (!file_exists($keyPath)) {
                    $this->log("  ERROR: {$name} file not found: {$keyPath}");
                    $errors++;
                    continue;
                }

                $value = file_get_contents($keyPath);
            }

            if ($this->dryRun) {
                $this->log("  WOULD SET: {$name} (len: " . strlen($value) . ")");
                continue;
            }

            $resp = $this->giteaApi(
                'PUT',
                "{$api}/{$name}",
                json_encode(['data' => $value])
            );

            if ($resp['code'] >= 200 && $resp['code'] < 300) {
                $this->log("  OK: {$name}");
            } else {
                $this->log("  ERROR: {$name} (HTTP {$resp['code']})");
                $errors++;
            }
        }

        return $errors > 0 ? 1 : 0;
    }

    private function setupMonitoring(): int
    {
        $this->log('[4/5] Setting up monitoring...');

        $mon = $this->config['monitoring'] ?? [];

        if (empty($mon)) {
            $this->log('  SKIP: No monitoring config');
            return 0;
        }

        $dashFile = $mon['grafana_dashboard'] ?? '';

        if (
            $dashFile !== '' && $this->grafanaUrl !== ''
            && $this->grafanaToken !== ''
        ) {
            $this->pushGrafanaDashboard(
                $dashFile,
                $mon['grafana_folder'] ?? 'Clients'
            );
        }

        $urls = $mon['urls'] ?? [];
        $domains = $mon['domains'] ?? [];
        $api = "/api/v1/repos/{$this->org}/{$this->repoName}"
            . "/actions/variables";

        if (!empty($urls)) {
            $urlStr = implode("\n", $urls);

            if ($this->dryRun) {
                $this->log("  WOULD SET: MONITORED_URLS");
            } else {
                $this->setOrCreateVariable($api, 'MONITORED_URLS', $urlStr);
                $this->log('  OK: MONITORED_URLS');
            }
        }

        if (!empty($domains)) {
            $domainStr = implode("\n", $domains);

            if ($this->dryRun) {
                $this->log("  WOULD SET: MONITORED_DOMAINS");
            } else {
                $this->setOrCreateVariable($api, 'MONITORED_DOMAINS', $domainStr);
                $this->log('  OK: MONITORED_DOMAINS');
            }
        }

        return 0;
    }

    private function pushGrafanaDashboard(string $file, string $folder): void
    {
        if (!file_exists($file)) {
            $this->log("  WARN: Dashboard not found: {$file}");
            return;
        }

        if ($this->dryRun) {
            $this->log("  WOULD PUSH: dashboard to \"{$folder}\"");
            return;
        }

        $dashboard = json_decode(file_get_contents($file), true);

        if (!is_array($dashboard)) {
            $this->log('  ERROR: Invalid dashboard JSON');
            return;
        }

        $folderId = $this->resolveGrafanaFolder($folder);
        $dashboard['id'] = null;

        $resp = $this->grafanaApi(
            'POST',
            '/api/dashboards/db',
            json_encode([
                'dashboard' => $dashboard,
                'folderId' => $folderId,
                'overwrite' => true,
            ])
        );

        if ($resp['code'] === 200) {
            $data = json_decode($resp['body'], true);
            $this->log("  OK: Dashboard (uid: " . ($data['uid'] ?? '?') . ")");
        } else {
            $this->log("  ERROR: Dashboard push (HTTP {$resp['code']})");
        }
    }

    private function resolveGrafanaFolder(string $title): int
    {
        $resp = $this->grafanaApi('GET', '/api/folders');

        if ($resp['code'] !== 200) {
            return 0;
        }

        $folders = json_decode($resp['body'], true);

        if (!is_array($folders)) {
            return 0;
        }

        foreach ($folders as $f) {
            if (strcasecmp($f['title'] ?? '', $title) === 0) {
                return (int) ($f['id'] ?? 0);
            }
        }

        return 0;
    }

    private function printSummary(): int
    {
        $vars = $this->config['variables'] ?? [];
        $secrets = $this->config['secrets'] ?? [];
        $clientName = $this->config['name'] ?? '';

        $this->log('');
        $this->log('[5/5] Provisioning summary');
        $this->log(str_repeat('=', 60));
        $this->log("  Repo:      {$this->giteaUrl}/{$this->org}/{$this->repoName}");
        $this->log('  Variables: ' . count($vars) . ' set');
        $this->log('  Secrets:   ' . count($secrets) . ' set');
        $this->log('');
        $this->log('Next steps:');
        $this->log('  1. Clone and customize the Joomla template');
        $this->log('  2. Push to dev to trigger dev deployment');
        $this->log('  3. Merge dev -> main for production release');
        $this->log(str_repeat('=', 60));

        return 0;
    }

    private function setOrCreateVariable(
        string $api,
        string $name,
        string $value
    ): bool {
        $resp = $this->giteaApi(
            'PUT',
            "{$api}/{$name}",
            json_encode(['value' => $value])
        );

        if ($resp['code'] === 404) {
            $resp = $this->giteaApi(
                'POST',
                $api,
                json_encode(['name' => $name, 'value' => $value])
            );
        }

        return $resp['code'] >= 200 && $resp['code'] < 300;
    }

    private function parseArgs(): void
    {
        $args = $_SERVER['argv'] ?? [];
        $count = count($args);

        for ($i = 1; $i < $count; $i++) {
            switch ($args[$i]) {
                case '--config':
                    $this->configFile = $args[++$i] ?? '';
                    break;
                case '--step':
                    $this->step = $args[++$i] ?? '';
                    break;
                case '--dry-run':
                    $this->dryRun = true;
                    break;
                case '--help':
                case '-h':
                    $this->printUsage();
                    exit(0);
                default:
                    $this->log("WARNING: Unknown arg: {$args[$i]}");
                    break;
            }
        }
    }

    private function printUsage(): void
    {
        $this->log('Usage: client_provision.php --config <file.json> [options]');
        $this->log('');
        $this->log('Provision a new client environment end-to-end.');
        $this->log('');
        $this->log('Options:');
        $this->log('  --config <file>  Client config JSON');
        $this->log('  --step <name>    Run one step: repo, variables, secrets, monitoring, summary');
        $this->log('  --dry-run        Preview without changes');
        $this->log('  --help, -h       Show this help');
        $this->log('');
        $this->log('Environment variables:');
        $this->log('  GA_TOKEN         Gitea API token');
        $this->log('  GRAFANA_URL      Grafana instance URL');
        $this->log('  GRAFANA_TOKEN    Grafana API token');
    }

    private function giteaApi(
        string $method,
        string $endpoint,
        ?string $body = null
    ): array {
        return $this->httpRequest(
            $this->giteaUrl . $endpoint,
            $method,
            "token {$this->giteaToken}",
            $body
        );
    }

    private function grafanaApi(
        string $method,
        string $endpoint,
        ?string $body = null
    ): array {
        return $this->httpRequest(
            $this->grafanaUrl . $endpoint,
            $method,
            "Bearer {$this->grafanaToken}",
            $body
        );
    }

    private function httpRequest(
        string $url,
        string $method,
        string $auth,
        ?string $body = null
    ): array {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $method);
        curl_setopt($ch, CURLOPT_HTTPHEADER, [
            'Content-Type: application/json',
            'Accept: application/json',
            "Authorization: {$auth}",
        ]);

        if ($body !== null) {
            curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
        }

        $responseBody = curl_exec($ch);
        $httpCode = (int) curl_getinfo($ch, CURLINFO_HTTP_CODE);

        if (curl_errno($ch)) {
            $error = curl_error($ch);
            curl_close($ch);
            return ['code' => 0, 'body' => "cURL error: {$error}"];
        }

        curl_close($ch);

        return ['code' => $httpCode, 'body' => $responseBody];
    }

    private function log(string $message): void
    {
        fwrite(STDERR, $message . PHP_EOL);
    }
}

$app = new ClientProvision();
exit($app->run());