<?php

namespace App\Http\Controllers\Api;

use App\Admin\Filters\LedgerFilter;
use App\Models\Ledger;
use App\Services\StatisticService;
use Illuminate\Http\Request;
use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\DB;

class StatisticsController extends Controller
{
    /**
     * 首页统计
     */
    public function dashboard(Request $request, StatisticService $statisticService): array
    {
        $query = Ledger::filter(
            $this->defaultFilterInput($request), LedgerFilter::class
        );

        // 昨天
        $yesterday = Carbon::yesterday();

        //--------------------------------------------------------------------------
        // 本月总账录入
        //--------------------------------------------------------------------------
        $currentMonthLedger = (clone $query)
            ->select([DB::raw('SUM(sales) as sales'), DB::raw('SUM(expenditure) as expenditure')])
            ->whereBetween('date', [$yesterday->copy()->startOfMonth()->format('Y-m-d'), $yesterday->format('Y-m-d')])
            ->first();

        //--------------------------------------------------------------------------
        // 昨日总账录入
        //--------------------------------------------------------------------------
        $yesterdayLedger = (clone $query)->where('date', $yesterday->format('Y-m-d'))->first();

        return [
            // 本月总账录入
            'current_month_ledger' => [
                // 截止日期
                'deadline' => $yesterday->format('Y-m-d'),
                'sales' => trim_zeros($currentMonthLedger->sales ?? 0),
                'expenditure' => trim_zeros($currentMonthLedger->expenditure ?? 0),
            ],
            // 昨日累计金额
            'yesterday_ledger' => [
                'date' => $yesterday->format('Y-m-d'),
                'sales' => trim_zeros($yesterdayLedger->sales ?? 0),
                'expenditure' => trim_zeros($yesterdayLedger->expenditure ?? 0),
            ],
            // 近30天趋势数据
            'trend_data_of_30days' => $statisticService->ledgerTrends(
                $yesterday->copy()->subDays(29), $yesterday->copy()
            ),
        ];
    }

    /**
     * 门店统计
     */
    public function stores(Request $request, StatisticService $statisticService)
    {
        $request->validate(
            rules: [
                'start_at' => ['bail', 'required', 'date_format:Y-m-d'],
                'end_at' => ['bail', 'required', 'date_format:Y-m-d'],
            ],
            attributes: [
                'start_at' => '开始日期',
                'end_at' => '结束日期',
            ],
        );

        $input = array_merge(
            $this->defaultFilterInput($request),
            $request->only(['start_at', 'end_at']),
        );

        $sorts = [['sales', 'desc'], ['id', 'asc']];

        return $statisticService->stores($input, $sorts);
    }

    /**
     * 销售统计
     */
    public function sales(Request $request, StatisticService $statisticService): array
    {
        $request->validate(
            rules: [
                'start_at' => ['bail', 'required', 'date_format:Y-m-d'],
                'end_at' => ['bail', 'required', 'date_format:Y-m-d'],
            ],
            attributes: [
                'start_at' => '开始日期',
                'end_at' => '结束日期',
            ],
        );

        return $statisticService->sales(
            Carbon::parse($request->input('start_at')),
            Carbon::parse($request->input('end_at')),
            $this->defaultFilterInput($request),
        );
    }

    /**
     * 处理区域和门店过滤条件
     */
    protected function defaultFilterInput(Request $request): array
    {
        $input = [];

        if ($request->filled('store_id')) {
            $input['store_id'] = $request->input('store_id');
        } else {
            $region = [];

            if ($request->filled('province_code')) {
                $region['provinceCode'] = $request->input('province_code');
            }

            if ($request->filled('city_code')) {
                $region['cityCode'] = $request->input('city_code');
            }

            $input['region'] = $region;
        }

        return $input;
    }
}