#!/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/license_manage.php
 * BRIEF: Manage license packages and keys via MokoGitea licensing API
 *
 * Usage:
 *   php bin/moko license:list --org MokoConsulting
 *   php bin/moko license:create-package --org MokoConsulting --name "Pro Annual" --duration 365 --max-sites 5
 *   php bin/moko license:issue --org MokoConsulting --package-id 1 --licensee "Client Inc" --email client@example.com
 *   php bin/moko license:revoke --org MokoConsulting --key-id 42
 *   php bin/moko license:renew --org MokoConsulting --key-id 42 --days 365
 *   php bin/moko license:validate --key MOKO-ABCD-1234-EF56-7890 --domain example.com
 *   php bin/moko license:usage --org MokoConsulting --key-id 42
 *   php bin/moko license:master-key --org MokoConsulting
 */

declare(strict_types=1);

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

use MokoEnterprise\CliFramework;

class LicenseManage extends CliFramework
{
    private string $apiBase = '';
    private string $token = '';
    private string $subcommand = '';

    protected function configure(): void
    {
        $this->setDescription('Manage license packages and keys via MokoGitea licensing API');
        $this->addArgument('--org', 'Organization name', '');
        $this->addArgument('--api-base', 'Gitea API base URL', '');
        $this->addArgument('--token', 'API token (or set GH_TOKEN env)', '');

        // Package args
        $this->addArgument('--name', 'Package name (for create-package)', '');
        $this->addArgument('--description', 'Package description', '');
        $this->addArgument('--duration', 'Duration in days (0 = lifetime)', '0');
        $this->addArgument('--max-sites', 'Max sites per key (0 = unlimited)', '0');
        $this->addArgument('--repo-scope', 'Repo scope: all or comma-separated repo IDs', 'all');
        $this->addArgument('--channels', 'Allowed channels: JSON array or comma-separated', '');

        // Key args
        $this->addArgument('--package-id', 'License package ID', '');
        $this->addArgument('--key-id', 'License key ID', '');
        $this->addArgument('--key', 'Raw license key string (for validate)', '');
        $this->addArgument('--licensee', 'Licensee name', '');
        $this->addArgument('--email', 'Licensee email', '');
        $this->addArgument('--domain', 'Domain restriction or validation domain', '');
        $this->addArgument('--domains', 'Comma-separated allowed domains', '');
        $this->addArgument('--payment-ref', 'Payment reference (idempotency key)', '');
        $this->addArgument('--days', 'Days to extend (for renew)', '365');
        $this->addArgument('--custom-key', 'Use a custom key string instead of auto-generated', '');

        // Output
        $this->addArgument('--json', 'Output as JSON', false);
    }

    protected function initialize(): void
    {
        // Resolve API base
        $this->apiBase = $this->getArgument('--api-base')
            ?: getenv('GITEA_URL')
            ?: 'https://git.mokoconsulting.tech';
        $this->apiBase = rtrim($this->apiBase, '/');

        // Resolve token
        $this->token = $this->getArgument('--token')
            ?: getenv('GH_TOKEN')
            ?: getenv('GITHUB_TOKEN')
            ?: '';

        if (empty($this->token)) {
            $ghToken = trim((string) @shell_exec('gh auth token 2>/dev/null'));
            if (!empty($ghToken)) {
                $this->token = $ghToken;
            }
        }

        // Determine subcommand from argv
        global $argv;
        foreach ($argv as $arg) {
            if (
                in_array($arg, [
                'list', 'create-package', 'update-package', 'delete-package',
                'issue', 'revoke', 'activate', 'renew', 'validate',
                'usage', 'master-key', 'keys', 'packages',
                ], true)
            ) {
                $this->subcommand = $arg;
                break;
            }
        }
    }

    protected function run(): int
    {
        if (empty($this->token)) {
            $this->log('No API token found. Set GH_TOKEN or pass --token.', 'ERROR');
            return 1;
        }

        return match ($this->subcommand) {
            'packages', 'list' => $this->listPackages(),
            'create-package'   => $this->createPackage(),
            'update-package'   => $this->updatePackage(),
            'delete-package'   => $this->deletePackage(),
            'keys'             => $this->listKeys(),
            'issue'            => $this->issueKey(),
            'revoke'           => $this->revokeKey(),
            'activate'         => $this->activateKey(),
            'renew'            => $this->renewKey(),
            'validate'         => $this->validateKey(),
            'usage'            => $this->viewUsage(),
            'master-key'       => $this->ensureMasterKey(),
            default            => $this->showSubcommandHelp(),
        };
    }

    // ── Subcommand help ──────────────────────────────────────────────────

    private function showSubcommandHelp(): int
    {
        $this->section('License Management — Subcommands');
        echo <<<HELP

  Package Management:
    packages              List all license packages for an org
    create-package        Create a new license package
    update-package        Update a license package (--package-id required)
    delete-package        Delete a license package (--package-id required)

  Key Management:
    keys                  List all license keys for an org
    issue                 Issue a new license key (--package-id required)
    revoke                Deactivate a license key (--key-id required)
    activate              Re-activate a revoked key (--key-id required)
    renew                 Extend key expiration (--key-id, --days required)
    validate              Validate a raw key string (--key required)
    master-key            Ensure master key exists for org

  Analytics:
    usage                 View usage logs for a key (--key-id required)

  Examples:
    php bin/moko license packages --org MokoConsulting
    php bin/moko license create-package --org MokoConsulting --name "Pro Annual" --duration 365
    php bin/moko license issue --org MokoConsulting --package-id 1 --licensee "Client"
    php bin/moko license validate --key MOKO-ABCD-1234-EF56-7890 --domain example.com
    php bin/moko license renew --org MokoConsulting --key-id 42 --days 365

HELP;
        return 0;
    }

    // ── Package operations ───────────────────────────────────────────────

    private function listPackages(): int
    {
        $org = $this->requireOrg();
        if ($org === null) {
            return 1;
        }

        $result = $this->apiGet("/orgs/{$org}/license-packages");
        if ($result === null) {
            return 1;
        }

        if ($this->getArgument('--json')) {
            echo json_encode($result, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) . "\n";
            return 0;
        }

        $this->section("License Packages — {$org}");
        if (empty($result)) {
            $this->log('No packages found.', 'WARN');
            return 0;
        }

        foreach ($result as $pkg) {
            $duration = ($pkg['duration_days'] ?? 0) === 0 ? 'lifetime' : ($pkg['duration_days'] . ' days');
            $sites = ($pkg['max_sites'] ?? 0) === 0 ? 'unlimited' : (string)$pkg['max_sites'];
            $active = ($pkg['is_active'] ?? true) ? 'active' : 'inactive';
            $this->status(
                sprintf('#%d %s', $pkg['id'] ?? 0, $pkg['name'] ?? ''),
                true,
                sprintf('%s | %s sites | %s', $duration, $sites, $active)
            );
        }
        return 0;
    }

    private function createPackage(): int
    {
        $org = $this->requireOrg();
        if ($org === null) {
            return 1;
        }

        $name = $this->getArgument('--name');
        if (empty($name)) {
            $this->log('--name is required for create-package', 'ERROR');
            return 1;
        }

        $channels = $this->getArgument('--channels');
        if (!empty($channels) && $channels[0] !== '[') {
            $channels = json_encode(explode(',', $channels));
        }

        $data = [
            'name'             => $name,
            'description'      => $this->getArgument('--description') ?: '',
            'duration_days'    => (int) $this->getArgument('--duration'),
            'max_sites'        => (int) $this->getArgument('--max-sites'),
            'repo_scope'       => $this->getArgument('--repo-scope'),
            'allowed_channels' => $channels ?: '',
        ];

        if ($this->isDryRun()) {
            $this->log('Would create package: ' . json_encode($data, JSON_PRETTY_PRINT), 'DRY-RUN');
            return 0;
        }

        $result = $this->apiPost("/orgs/{$org}/license-packages", $data);
        if ($result === null) {
            return 1;
        }

        if ($this->getArgument('--json')) {
            echo json_encode($result, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) . "\n";
        } else {
            $this->log(sprintf('Created package #%d: %s', $result['id'] ?? 0, $name), 'OK');
        }
        return 0;
    }

    private function updatePackage(): int
    {
        $org = $this->requireOrg();
        $pkgId = $this->getArgument('--package-id');
        if ($org === null || empty($pkgId)) {
            $this->log('--org and --package-id are required', 'ERROR');
            return 1;
        }

        $data = array_filter([
            'name'             => $this->getArgument('--name') ?: null,
            'description'      => $this->getArgument('--description') ?: null,
            'duration_days'    => $this->getArgument('--duration') !== '0' ? (int)$this->getArgument('--duration') : null,
            'max_sites'        => $this->getArgument('--max-sites') !== '0' ? (int)$this->getArgument('--max-sites') : null,
        ], fn($v) => $v !== null);

        if (empty($data)) {
            $this->log('No fields to update. Pass --name, --description, --duration, or --max-sites.', 'WARN');
            return 1;
        }

        if ($this->isDryRun()) {
            $this->log("Would update package #{$pkgId}: " . json_encode($data), 'DRY-RUN');
            return 0;
        }

        $result = $this->apiPatch("/orgs/{$org}/license-packages/{$pkgId}", $data);
        if ($result === null) {
            return 1;
        }

        $this->log("Updated package #{$pkgId}", 'OK');
        return 0;
    }

    private function deletePackage(): int
    {
        $org = $this->requireOrg();
        $pkgId = $this->getArgument('--package-id');
        if ($org === null || empty($pkgId)) {
            $this->log('--org and --package-id are required', 'ERROR');
            return 1;
        }

        if ($this->isDryRun()) {
            $this->log("Would delete package #{$pkgId}", 'DRY-RUN');
            return 0;
        }

        $result = $this->apiDelete("/orgs/{$org}/license-packages/{$pkgId}");
        if ($result === null) {
            return 1;
        }

        $this->log("Deleted package #{$pkgId}", 'OK');
        return 0;
    }

    // ── Key operations ───────────────────────────────────────────────────

    private function listKeys(): int
    {
        $org = $this->requireOrg();
        if ($org === null) {
            return 1;
        }

        $pkgId = $this->getArgument('--package-id');
        $endpoint = $pkgId
            ? "/orgs/{$org}/license-packages/{$pkgId}/keys"
            : "/orgs/{$org}/license-keys";

        $result = $this->apiGet($endpoint);
        if ($result === null) {
            return 1;
        }

        if ($this->getArgument('--json')) {
            echo json_encode($result, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) . "\n";
            return 0;
        }

        $this->section("License Keys — {$org}" . ($pkgId ? " (Package #{$pkgId})" : ''));
        if (empty($result)) {
            $this->log('No keys found.', 'WARN');
            return 0;
        }

        foreach ($result as $key) {
            $prefix = $key['key_prefix'] ?? '???';
            $licensee = $key['licensee_name'] ?? 'N/A';
            $active = ($key['is_active'] ?? true) ? 'active' : 'revoked';
            $internal = ($key['is_internal'] ?? false) ? ' [MASTER]' : '';
            $domains = $key['domain_restriction'] ?? '';
            $expires = ($key['expires_unix'] ?? 0) > 0
                ? date('Y-m-d', (int) $key['expires_unix'])
                : 'never';

            $this->status(
                sprintf('#%d %s', $key['id'] ?? 0, $prefix),
                $key['is_active'] ?? true,
                sprintf('%s | %s | expires: %s | domains: %s%s', $licensee, $active, $expires, $domains ?: 'any', $internal)
            );
        }
        return 0;
    }

    private function issueKey(): int
    {
        $org = $this->requireOrg();
        $pkgId = $this->getArgument('--package-id');
        if ($org === null || empty($pkgId)) {
            $this->log('--org and --package-id are required', 'ERROR');
            return 1;
        }

        $data = [
            'package_id'         => (int) $pkgId,
            'licensee_name'      => $this->getArgument('--licensee') ?: '',
            'licensee_email'     => $this->getArgument('--email') ?: '',
            'domain_restriction' => $this->getArgument('--domains') ?: '',
            'max_sites'          => (int) $this->getArgument('--max-sites'),
            'payment_ref'        => $this->getArgument('--payment-ref') ?: '',
        ];

        $customKey = $this->getArgument('--custom-key');
        if (!empty($customKey)) {
            $data['custom_key'] = $customKey;
        }

        if ($this->isDryRun()) {
            $this->log('Would issue key: ' . json_encode($data, JSON_PRETTY_PRINT), 'DRY-RUN');
            return 0;
        }

        $result = $this->apiPost("/orgs/{$org}/license-keys", $data);
        if ($result === null) {
            return 1;
        }

        if ($this->getArgument('--json')) {
            echo json_encode($result, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) . "\n";
        } else {
            $rawKey = $result['raw_key'] ?? '';
            $this->section('License Key Issued');
            if (!empty($rawKey)) {
                echo "\n";
                $this->log("Raw Key: {$rawKey}", 'OK');
                $this->log('This key will NOT be shown again. Save it now.', 'WARN');
                echo "\n";
            }
            $this->log(sprintf('Key ID: #%d | Prefix: %s', $result['id'] ?? 0, $result['key_prefix'] ?? ''), 'INFO');
        }
        return 0;
    }

    private function revokeKey(): int
    {
        return $this->toggleKey(false);
    }

    private function activateKey(): int
    {
        return $this->toggleKey(true);
    }

    private function toggleKey(bool $activate): int
    {
        $org = $this->requireOrg();
        $keyId = $this->getArgument('--key-id');
        if ($org === null || empty($keyId)) {
            $this->log('--org and --key-id are required', 'ERROR');
            return 1;
        }

        $action = $activate ? 'activate' : 'revoke';

        if ($this->isDryRun()) {
            $this->log("Would {$action} key #{$keyId}", 'DRY-RUN');
            return 0;
        }

        $result = $this->apiPatch("/orgs/{$org}/license-keys/{$keyId}", [
            'is_active' => $activate,
        ]);
        if ($result === null) {
            return 1;
        }

        $label = $activate ? 'Activated' : 'Revoked';
        $this->log("{$label} key #{$keyId}", 'OK');
        return 0;
    }

    private function renewKey(): int
    {
        $org = $this->requireOrg();
        $keyId = $this->getArgument('--key-id');
        $days = (int) $this->getArgument('--days');
        if ($org === null || empty($keyId)) {
            $this->log('--org and --key-id are required', 'ERROR');
            return 1;
        }

        if ($this->isDryRun()) {
            $this->log("Would renew key #{$keyId} by {$days} days", 'DRY-RUN');
            return 0;
        }

        $result = $this->apiPost("/orgs/{$org}/license-keys/{$keyId}/renew", [
            'days' => $days,
        ]);
        if ($result === null) {
            return 1;
        }

        $newExpiry = isset($result['expires_unix']) && $result['expires_unix'] > 0
            ? date('Y-m-d', (int) $result['expires_unix'])
            : 'never';
        $this->log("Renewed key #{$keyId} — new expiry: {$newExpiry}", 'OK');
        return 0;
    }

    private function validateKey(): int
    {
        $rawKey = $this->getArgument('--key');
        if (empty($rawKey)) {
            $this->log('--key is required for validate', 'ERROR');
            return 1;
        }

        $data = ['key' => $rawKey];
        $domain = $this->getArgument('--domain');
        if (!empty($domain)) {
            $data['domain'] = $domain;
        }

        $result = $this->apiPost('/license-keys/validate', $data);
        if ($result === null) {
            return 1;
        }

        if ($this->getArgument('--json')) {
            echo json_encode($result, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) . "\n";
            return 0;
        }

        $valid = $result['valid'] ?? false;
        if ($valid) {
            $this->status('License Valid', true, sprintf(
                'Package: %s | Expires: %s | Sites: %s',
                $result['package_name'] ?? 'N/A',
                isset($result['expires_unix']) && $result['expires_unix'] > 0
                    ? date('Y-m-d', (int) $result['expires_unix']) : 'never',
                $result['max_sites'] ?? 'unlimited'
            ));
            return 0;
        } else {
            $this->status('License Invalid', false, $result['error'] ?? 'Unknown reason');
            return 1;
        }
    }

    private function viewUsage(): int
    {
        $org = $this->requireOrg();
        $keyId = $this->getArgument('--key-id');
        if ($org === null || empty($keyId)) {
            $this->log('--org and --key-id are required', 'ERROR');
            return 1;
        }

        $result = $this->apiGet("/orgs/{$org}/license-keys/{$keyId}/usage");
        if ($result === null) {
            return 1;
        }

        if ($this->getArgument('--json')) {
            echo json_encode($result, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) . "\n";
            return 0;
        }

        $this->section("Usage — Key #{$keyId}");
        $entries = $result['entries'] ?? $result;
        if (empty($entries)) {
            $this->log('No usage recorded.', 'WARN');
            return 0;
        }

        foreach ($entries as $u) {
            $date = isset($u['created_unix']) ? date('Y-m-d H:i', (int) $u['created_unix']) : 'N/A';
            $domain = $u['domain'] ?? '';
            $ip = $u['ip_address'] ?? '';
            $from = $u['version_from'] ?? '';
            $this->log(sprintf('%s | %s | %s | from %s', $date, $domain ?: 'no domain', $ip, $from ?: 'unknown'), 'INFO');
        }
        return 0;
    }

    private function ensureMasterKey(): int
    {
        $org = $this->requireOrg();
        if ($org === null) {
            return 1;
        }

        if ($this->isDryRun()) {
            $this->log("Would ensure master key for {$org}", 'DRY-RUN');
            return 0;
        }

        $result = $this->apiPost("/orgs/{$org}/license-keys/master", []);
        if ($result === null) {
            return 1;
        }

        if ($this->getArgument('--json')) {
            echo json_encode($result, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) . "\n";
            return 0;
        }

        $rawKey = $result['raw_key'] ?? '';
        if (!empty($rawKey)) {
            $this->section('Master Key Created');
            echo "\n";
            $this->log("Raw Key: {$rawKey}", 'OK');
            $this->log('This key will NOT be shown again. Save it now.', 'WARN');
            echo "\n";
        } else {
            $this->log('Master key already exists.', 'INFO');
        }
        return 0;
    }

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

    private function requireOrg(): ?string
    {
        $org = $this->getArgument('--org');
        if (empty($org)) {
            // Try to detect from git remote
            $remote = trim((string) @shell_exec('git remote get-url origin 2>/dev/null'));
            if (preg_match('#[/:]([^/]+)/[^/]+?(?:\.git)?$#', $remote, $m)) {
                $org = $m[1];
            }
        }
        if (empty($org)) {
            $this->log('--org is required (or must be detectable from git remote)', 'ERROR');
            return null;
        }
        return $org;
    }

    private function apiGet(string $path): ?array
    {
        return $this->apiRequest('GET', $path);
    }

    private function apiPost(string $path, array $data): ?array
    {
        return $this->apiRequest('POST', $path, $data);
    }

    private function apiPatch(string $path, array $data): ?array
    {
        return $this->apiRequest('PATCH', $path, $data);
    }

    private function apiDelete(string $path): ?array
    {
        return $this->apiRequest('DELETE', $path);
    }

    private function apiRequest(string $method, string $path, ?array $data = null): ?array
    {
        $url = $this->apiBase . '/api/v1' . $path;

        $ch = curl_init();
        curl_setopt_array($ch, [
            CURLOPT_URL            => $url,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_CUSTOMREQUEST  => $method,
            CURLOPT_HTTPHEADER     => [
                'Authorization: token ' . $this->token,
                'Content-Type: application/json',
                'Accept: application/json',
            ],
            CURLOPT_TIMEOUT        => 30,
        ]);

        if ($data !== null && in_array($method, ['POST', 'PUT', 'PATCH'], true)) {
            curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
        }

        if ($this->getArgument('--verbose')) {
            $this->log("{$method} {$url}", 'DEBUG');
        }

        $response = curl_exec($ch);
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        $error = curl_error($ch);
        curl_close($ch);

        if (!empty($error)) {
            $this->log("API error: {$error}", 'ERROR');
            return null;
        }

        if ($httpCode === 404) {
            $this->log("API endpoint not found: {$path}", 'ERROR');
            $this->log('The licensing API may not be deployed yet. Check MokoGitea version.', 'WARN');
            return null;
        }

        if ($httpCode === 204) {
            return []; // success, no content
        }

        if ($httpCode >= 400) {
            $body = json_decode((string) $response, true);
            $msg = $body['message'] ?? $response;
            $this->log("API error ({$httpCode}): {$msg}", 'ERROR');
            return null;
        }

        $decoded = json_decode((string) $response, true);
        if ($decoded === null && !empty($response)) {
            $this->log('Failed to parse API response', 'ERROR');
            return null;
        }

        return $decoded ?? [];
    }
}

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