<?php

declare(strict_types=1);

namespace App\Framework\Admin;

use App\Framework\Http\HttpRequest;
use App\Framework\Http\Status;
use App\Framework\Router\Result\JsonResult;

/**
 * Admin API Handler
 *
 * Handles auto-generated API endpoints for admin resources
 */
final readonly class AdminApiHandler
{
    public function handleList(
        HttpRequest $request,
        mixed $repository
    ): JsonResult {
        // Extract query parameters
        $page = (int) ($request->query->get('page') ?? 1);
        $perPage = (int) ($request->query->get('per_page') ?? 25);
        $sortBy = $request->query->get('sort_by');
        $sortDir = $request->query->get('sort_dir') ?? 'asc';
        $search = $request->query->get('search');

        // Build filters
        $filters = [];
        if ($search) {
            $filters['search'] = $search;
        }

        // Fetch data from repository
        $data = $repository->findAll($filters);

        // Apply sorting if requested
        if ($sortBy && method_exists($repository, 'sortBy')) {
            $data = $repository->sortBy($data, $sortBy, $sortDir);
        }

        // Apply pagination
        $total = count($data);
        $offset = ($page - 1) * $perPage;
        $paginatedData = array_slice($data, $offset, $perPage);

        // Convert to arrays
        $items = array_map(
            fn($item) => method_exists($item, 'toArray') ? $item->toArray() : (array) $item,
            $paginatedData
        );

        return new JsonResult([
            'success' => true,
            'data' => $items,
            'pagination' => [
                'page' => $page,
                'per_page' => $perPage,
                'total' => $total,
                'pages' => (int) ceil($total / $perPage),
            ],
        ]);
    }

    public function handleGet(
        string $id,
        mixed $repository
    ): JsonResult {
        $item = $repository->findById($id);

        if ($item === null) {
            return new JsonResult([
                'success' => false,
                'error' => 'Resource not found',
            ], Status::NOT_FOUND);
        }

        $data = method_exists($item, 'toArray') ? $item->toArray() : (array) $item;

        return new JsonResult([
            'success' => true,
            'data' => $data,
        ]);
    }

    public function handleCreate(
        HttpRequest $request,
        mixed $repository
    ): JsonResult {
        $data = $request->parsedBody->toArray();

        try {
            $item = $repository->create($data);

            $responseData = method_exists($item, 'toArray') ? $item->toArray() : (array) $item;

            return new JsonResult([
                'success' => true,
                'data' => $responseData,
                'message' => 'Resource created successfully',
            ], Status::CREATED);
        } catch (\Exception $e) {
            return new JsonResult([
                'success' => false,
                'error' => $e->getMessage(),
            ], Status::BAD_REQUEST);
        }
    }

    public function handleUpdate(
        string $id,
        HttpRequest $request,
        mixed $repository
    ): JsonResult {
        $data = $request->parsedBody->toArray();

        try {
            $item = $repository->update($id, $data);

            if ($item === null) {
                return new JsonResult([
                    'success' => false,
                    'error' => 'Resource not found',
                ], Status::NOT_FOUND);
            }

            $responseData = method_exists($item, 'toArray') ? $item->toArray() : (array) $item;

            return new JsonResult([
                'success' => true,
                'data' => $responseData,
                'message' => 'Resource updated successfully',
            ]);
        } catch (\Exception $e) {
            return new JsonResult([
                'success' => false,
                'error' => $e->getMessage(),
            ], Status::BAD_REQUEST);
        }
    }

    public function handleDelete(
        string $id,
        mixed $repository
    ): JsonResult {
        try {
            $deleted = $repository->delete($id);

            if (!$deleted) {
                return new JsonResult([
                    'success' => false,
                    'error' => 'Resource not found',
                ], Status::NOT_FOUND);
            }

            return new JsonResult([
                'success' => true,
                'message' => 'Resource deleted successfully',
            ]);
        } catch (\Exception $e) {
            return new JsonResult([
                'success' => false,
                'error' => $e->getMessage(),
            ], Status::BAD_REQUEST);
        }
    }
}