<?php

namespace App\Http\Controllers;

use App\Http\Resources\NavPageResource;
use App\Models\PageNumber;
use Illuminate\Http\Request;
use Illuminate\Http\Response;

class NavPageController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return Response
     */
    public function index()
    {
        //
    }

    /**
     * Store a newly created resource in storage.
     * 页码导航
     * 支持缅文版，PTS,等当前页，前一页，后一页，页面信息的获取
     *
     * @return Response
     */
    public function store(Request $request)
    {
        //
    }

    /**
     * Display the specified resource.
     *
     * @return Response
     */
    public function show(string $pageNumber)
    {
        // M-99_100_101-1-37
        $id = explode('-', $pageNumber);
        if (count($id) !== 4) {
            return $this->error('参数错误。参数应为4 实际得到'.count($id), 400, 400);
        }
        $books = explode('_', $id[1]);
        $pageCurr = PageNumber::whereIn('pcd_book_id', $books)
            ->where('type', $id[0])
            ->where('volume', $id[2])
            ->where('page', $id[3])
            ->first();
        $pagePrev = PageNumber::whereIn('pcd_book_id', $books)
            ->where('type', $id[0])
            ->where('volume', $id[2])
            ->where('page', (int) $id[3] - 1)
            ->first();
        $pageNext = PageNumber::whereIn('pcd_book_id', $books)
            ->where('type', $id[0])
            ->where('volume', $id[2])
            ->where('page', (int) $id[3] + 1)
            ->first();
        if ($pageCurr) {
            return $this->ok([
                'curr' => $pageCurr ? new NavPageResource($pageCurr) : null,
                'prev' => $pagePrev ? new NavPageResource($pagePrev) : null,
                'next' => $pageNext ? new NavPageResource($pageNext) : null,
            ]);
        } else {
            return $this->error('page not found');
        }

    }

    /**
     * Update the specified resource in storage.
     *
     * @return Response
     */
    public function update(Request $request, PageNumber $pageNumber)
    {
        //
    }

    /**
     * Remove the specified resource from storage.
     *
     * @return Response
     */
    public function destroy(PageNumber $pageNumber)
    {
        //
    }
}