<?php

namespace App\Controller\Tools;

use App\Model\Generate;
use PSX\Api\Attribute\Get;
use PSX\Api\Attribute\Incoming;
use PSX\Api\Attribute\Path;
use PSX\Api\Attribute\Post;
use PSX\Api\Model\Passthru;
use PSX\Framework\Controller\ControllerAbstract;
use PSX\Framework\Http\Writer\Template;
use PSX\Framework\Loader\ReverseRouter;

class OpenAPI extends ControllerAbstract
{
    public function __construct(private ReverseRouter $reverseRouter)
    {
    }

    #[Get]
    #[Path('/tools/openapi')]
    public function show(): mixed
    {
        $data = [
            'title' => 'OpenAPI migration | TypeSchema',
            'method' => explode('::', __METHOD__),
            'schema' => $this->getSchema()
        ];

        $templateFile = __DIR__ . '/../../../resources/template/tools/openapi.php';
        return new Template($data, $templateFile, $this->reverseRouter);
    }

    #[Post]
    #[Path('/tools/openapi')]
    public function migrate(Generate $generate): mixed
    {
        $schema = $generate->getSchema() ?? throw new \RuntimeException('Provided no schema');

        try {
            $output = (new \PSX\Api\Transformer\OpenAPI())->transform(json_decode($schema));
        } catch (\Throwable $e) {
            $output = $e->getMessage();
        }

        $data = [
            'title' => 'OpenAPI migration | TypeSchema',
            'method' => explode('::', __METHOD__),
            'schema' => $this->getSchema(),
            'output' => json_encode($output, JSON_PRETTY_PRINT),
        ];

        $templateFile = __DIR__ . '/../../../resources/template/tools/openapi.php';
        return new Template($data, $templateFile, $this->reverseRouter);
    }

    private function getSchema(): string
    {
        return <<<'JSON'
{
  "openapi": "3.0.0",
  "info": {
    "version": "1.0.0",
    "title": "Swagger Petstore",
    "license": {
      "name": "MIT"
    }
  },
  "servers": [
    {
      "url": "http://petstore.swagger.io/v1"
    }
  ],
  "paths": {
    "/pets": {
      "get": {
        "summary": "List all pets",
        "operationId": "listPets",
        "tags": [
          "pets"
        ],
        "parameters": [
          {
            "name": "limit",
            "in": "query",
            "description": "How many items to return at one time (max 100)",
            "required": false,
            "schema": {
              "type": "integer",
              "format": "int32"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "A paged array of pets",
            "headers": {
              "x-next": {
                "description": "A link to the next page of responses",
                "schema": {
                  "type": "string"
                }
              }
            },
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Pets"
                }
              }
            }
          },
          "default": {
            "description": "unexpected error",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Error"
                }
              }
            }
          }
        }
      },
      "post": {
        "summary": "Create a pet",
        "operationId": "createPets",
        "tags": [
          "pets"
        ],
        "responses": {
          "201": {
            "description": "Null response"
          },
          "default": {
            "description": "unexpected error",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Error"
                }
              }
            }
          }
        }
      }
    },
    "/pets/{petId}": {
      "get": {
        "summary": "Info for a specific pet",
        "operationId": "showPetById",
        "tags": [
          "pets"
        ],
        "parameters": [
          {
            "name": "petId",
            "in": "path",
            "required": true,
            "description": "The id of the pet to retrieve",
            "schema": {
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Expected response to a valid request",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Pet"
                }
              }
            }
          },
          "default": {
            "description": "unexpected error",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Error"
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "Pet": {
        "type": "object",
        "required": [
          "id",
          "name"
        ],
        "properties": {
          "id": {
            "type": "integer",
            "format": "int64"
          },
          "name": {
            "type": "string"
          },
          "tag": {
            "type": "string"
          }
        }
      },
      "Pets": {
        "type": "array",
        "items": {
          "$ref": "#/components/schemas/Pet"
        }
      },
      "Error": {
        "type": "object",
        "required": [
          "code",
          "message"
        ],
        "properties": {
          "code": {
            "type": "integer",
            "format": "int32"
          },
          "message": {
            "type": "string"
          }
        }
      }
    }
  }
}
JSON;
    }
}
