<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use Illuminate\Support\Facades\File;
use Symfony\Component\Yaml\Yaml;

class GenerateSwagger extends Command
{
    protected $signature = 'swagger:generate';
    protected $description = 'Generate OpenAPI specification for the API';

    public function handle(): int
    {
        $this->info('Generating OpenAPI specification...');

        $outputDir = public_path('docs');
        if (!File::exists($outputDir)) {
            File::makeDirectory($outputDir, 0755, true);
        }

        $spec = $this->generateSpec();
        $yaml = Yaml::dump($spec, 4, 2);

        File::put($outputDir . '/openapi.yaml', $yaml);
        $this->info('OpenAPI specification saved to public/docs/openapi.yaml');

        return Command::SUCCESS;
    }

    protected function generateSpec(): array
    {
        $appUrl = config('app.url', 'http://localhost');

        return [
            'openapi' => '3.0.0',
            'info' => [
                'title' => config('app.name', 'Laravel API'),
                'description' => 'API Documentation',
                'version' => '1.0.0',
            ],
            'servers' => [
                ['url' => $appUrl, 'description' => 'Local server'],
            ],
            'paths' => $this->generatePaths(),
            'components' => [
                'securitySchemes' => [
                    'bearerAuth' => [
                        'type' => 'http',
                        'scheme' => 'bearer',
                        'bearerFormat' => 'JWT',
                    ],
                ],
                'schemas' => $this->generateSchemas(),
            ],
        ];
    }

    protected function generatePaths(): array
    {
        return [
            '/api/register' => [
                'post' => [
                    'tags' => ['Auth'],
                    'summary' => 'Register a new user',
                    'requestBody' => [
                        'required' => true,
                        'content' => [
                            'application/json' => [
                                'schema' => [
                                    'type' => 'object',
                                    'required' => ['name', 'email', 'password', 'password_confirmation'],
                                    'properties' => [
                                        'name' => ['type' => 'string', 'example' => 'John Doe'],
                                        'email' => ['type' => 'string', 'format' => 'email', 'example' => 'john@example.com'],
                                        'password' => ['type' => 'string', 'format' => 'password', 'example' => 'password123'],
                                        'password_confirmation' => ['type' => 'string', 'format' => 'password', 'example' => 'password123'],
                                    ],
                                ],
                            ],
                        ],
                    ],
                    'responses' => [
                        '201' => ['description' => 'User registered successfully'],
                        '422' => ['description' => 'Validation error'],
                    ],
                ],
            ],
            '/api/login' => [
                'post' => [
                    'tags' => ['Auth'],
                    'summary' => 'Login user',
                    'requestBody' => [
                        'required' => true,
                        'content' => [
                            'application/json' => [
                                'schema' => [
                                    'type' => 'object',
                                    'required' => ['email', 'password'],
                                    'properties' => [
                                        'email' => ['type' => 'string', 'format' => 'email', 'example' => 'john@example.com'],
                                        'password' => ['type' => 'string', 'format' => 'password', 'example' => 'password123'],
                                    ],
                                ],
                            ],
                        ],
                    ],
                    'responses' => [
                        '200' => ['description' => 'Login successful'],
                        '401' => ['description' => 'Invalid credentials'],
                    ],
                ],
            ],
            '/api/logout' => [
                'post' => [
                    'tags' => ['Auth'],
                    'summary' => 'Logout user',
                    'security' => [['bearerAuth' => []]],
                    'responses' => [
                        '200' => ['description' => 'Logged out successfully'],
                    ],
                ],
            ],
            '/api/user' => [
                'get' => [
                    'tags' => ['Auth'],
                    'summary' => 'Get authenticated user',
                    'security' => [['bearerAuth' => []]],
                    'responses' => [
                        '200' => ['description' => 'User data'],
                    ],
                ],
            ],
            '/api/posts' => [
                'get' => [
                    'tags' => ['Posts'],
                    'summary' => 'Get all posts',
                    'security' => [['bearerAuth' => []]],
                    'responses' => [
                        '200' => ['description' => 'List of posts'],
                    ],
                ],
                'post' => [
                    'tags' => ['Posts'],
                    'summary' => 'Create a new post',
                    'security' => [['bearerAuth' => []]],
                    'requestBody' => [
                        'required' => true,
                        'content' => [
                            'application/json' => [
                                'schema' => [
                                    'type' => 'object',
                                    'required' => ['title', 'content'],
                                    'properties' => [
                                        'title' => ['type' => 'string', 'example' => 'My Post Title'],
                                        'content' => ['type' => 'string', 'example' => 'Post content here...'],
                                    ],
                                ],
                            ],
                        ],
                    ],
                    'responses' => [
                        '201' => ['description' => 'Post created successfully'],
                        '422' => ['description' => 'Validation error'],
                    ],
                ],
            ],
            '/api/posts/{id}' => [
                'get' => [
                    'tags' => ['Posts'],
                    'summary' => 'Get a post',
                    'security' => [['bearerAuth' => []]],
                    'parameters' => [
                        ['name' => 'id', 'in' => 'path', 'required' => true, 'schema' => ['type' => 'integer']],
                    ],
                    'responses' => [
                        '200' => ['description' => 'Post data'],
                        '404' => ['description' => 'Post not found'],
                    ],
                ],
                'put' => [
                    'tags' => ['Posts'],
                    'summary' => 'Update a post',
                    'security' => [['bearerAuth' => []]],
                    'parameters' => [
                        ['name' => 'id', 'in' => 'path', 'required' => true, 'schema' => ['type' => 'integer']],
                    ],
                    'requestBody' => [
                        'required' => true,
                        'content' => [
                            'application/json' => [
                                'schema' => [
                                    'type' => 'object',
                                    'properties' => [
                                        'title' => ['type' => 'string', 'example' => 'Updated Title'],
                                        'content' => ['type' => 'string', 'example' => 'Updated content...'],
                                    ],
                                ],
                            ],
                        ],
                    ],
                    'responses' => [
                        '200' => ['description' => 'Post updated successfully'],
                        '404' => ['description' => 'Post not found'],
                        '422' => ['description' => 'Validation error'],
                    ],
                ],
                'delete' => [
                    'tags' => ['Posts'],
                    'summary' => 'Delete a post',
                    'security' => [['bearerAuth' => []]],
                    'parameters' => [
                        ['name' => 'id', 'in' => 'path', 'required' => true, 'schema' => ['type' => 'integer']],
                    ],
                    'responses' => [
                        '200' => ['description' => 'Post deleted successfully'],
                        '404' => ['description' => 'Post not found'],
                    ],
                ],
            ],
        ];
    }

    protected function generateSchemas(): array
    {
        return [
            'User' => [
                'type' => 'object',
                'properties' => [
                    'id' => ['type' => 'integer'],
                    'name' => ['type' => 'string'],
                    'email' => ['type' => 'string', 'format' => 'email'],
                    'role' => ['type' => 'string'],
                    'created_at' => ['type' => 'string', 'format' => 'date-time'],
                ],
            ],
            'Post' => [
                'type' => 'object',
                'properties' => [
                    'id' => ['type' => 'integer'],
                    'title' => ['type' => 'string'],
                    'content' => ['type' => 'string'],
                    'user_id' => ['type' => 'integer'],
                    'user' => ['$ref' => '#/components/schemas/User'],
                    'created_at' => ['type' => 'string', 'format' => 'date-time'],
                    'updated_at' => ['type' => 'string', 'format' => 'date-time'],
                ],
            ],
        ];
    }
}