<?php

use Reservair\Logger\Logger;


class RsvFormDefinitionController {
    use RsvPagedResponseTrait;
    private string $namespace      = 'reservations/v1';
    private string $resource_name  = 'form-definition';

    private static function schema(): array {
        return [
            'type'       => 'object',
            'properties' => [
                'form_id'    => ['type' => 'integer', 'readonly' => true],
                'name'       => ['type' => 'string',  'required' => true, 'minLength' => 1],
                'definition' => [
                    'type'       => 'object',
                    'required'   => false,
                    'properties' => [
                        'email_key' => ['type' => 'string', 'required' => false],
                        'elements'  => ['type' => 'array',  'default'  => []],
                    ],
                ],
            ],
        ];
    }

    public function register_routes(): void {
        register_rest_route($this->namespace, '/' . $this->resource_name, [
            [
                'methods'             => 'GET',
                'callback'            => [$this, 'index'],
                'permission_callback' => [RsvRestPolicy::class, 'admin'],
            ],
            [
                'methods'             => 'POST',
                'callback'            => [$this, 'create'],
                'permission_callback' => [RsvRestPolicy::class, 'admin'],
                'args'                => self::input_args(self::schema()),
            ],
        ]);

        register_rest_route($this->namespace, '/' . $this->resource_name . '/(?P<id>\d+)', [
            [
                'methods'             => 'GET',
                'callback'            => [$this, 'show'],
                'permission_callback' => [RsvRestPolicy::class, 'admin'],
            ],
            [
                'methods'             => 'PUT',
                'callback'            => [$this, 'update'],
                'permission_callback' => [RsvRestPolicy::class, 'admin'],
                'args'                => self::input_args(self::schema()),
            ],
            [
                'methods'             => 'DELETE',
                'callback'            => [$this, 'destroy'],
                'permission_callback' => [RsvRestPolicy::class, 'admin'],
            ],
        ]);
    }

    function index(WP_REST_Request $request): WP_REST_Response {
        [$skip, $limit] = self::paging($request);
        $repo = new RsvFormDefinitionRepository();
        return $this->paged_response($repo->get_all($limit, $skip), $repo->count_all());
    }

    function show(WP_REST_Request $request): WP_REST_Response {
        $row = (new RsvFormDefinitionRepository())->get((int) $request->get_param('id'));

        if ($row === null) {
            return new WP_REST_Response(['error' => 'Not found'], 404);
        }

        return new WP_REST_Response($row, 200);
    }

    function create(WP_REST_Request $request): WP_REST_Response {
        try {
            $id = (new RsvFormDefinitionRepository())->add(
                $request->get_param('name'),
                $request->get_param('definition') ?? []
            );
        } catch(Throwable $e) {
            Logger::error($e);
            return new WP_REST_Response(['error' => 'An error occurred.'], 500);
        }

        return new WP_REST_Response(['id' => $id], 201);
    }

    function destroy(WP_REST_Request $request): WP_REST_Response {
        $id   = (int) $request->get_param('id');
        $repo = new RsvFormDefinitionRepository();

        if ($repo->get($id) === null) {
            return new WP_REST_Response(['error' => 'Not found'], 404);
        }

        $repo->delete($id);

        return new WP_REST_Response(null, 204);
    }

    function update(WP_REST_Request $request): WP_REST_Response {
        $id   = (int) $request->get_param('id');
        $repo = new RsvFormDefinitionRepository();

        if ($repo->get($id) === null) {
            return new WP_REST_Response(['error' => 'Not found'], 404);
        }

        $repo->update($id, $request->get_param('name'), $request->get_param('definition'));

        return new WP_REST_Response(null, 204);
    }
}