<?php

namespace App\Http\Controllers\Api;

use App\Enums\TaskStatus;
use App\Exceptions\RuntimeException;
use App\Http\Controllers\Api\Controller;
use App\Models\Keyword;
use App\Models\Ledger;
use App\Models\LedgerItem;
use App\Models\TaskLedger;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Validator;
use Throwable;

class LedgerController extends Controller
{
    public function store(Request $request)
    {
        /** @var \App\Models\Employee */
        $user = $request->user();

        if (! $user->isStoreMaster()) {
            throw new RuntimeException('非店长不可上报数据');
        }

        // 是否是彩票店数据上报
        $isLotteryLedger = $user->store->isLotteryStore();

        $validated = $request->validate(
            rules: [
                'date' => ['bail', 'required', 'date_format:Y-m-d'],
                'items' => $isLotteryLedger ? ['bail', 'required', 'array'] : ['bail', 'array'],
                'new_customers' => ['bail', 'required', 'int', 'min:0'],
                'sales' => ['bail', 'required', 'numeric', 'min:0'],
                'expenditure' => ['bail', 'required', 'numeric', 'min:0'],
                'handover_amount' => ['bail', 'required', 'numeric', 'min:0'],
                'photos' => ['bail', 'required', 'array'],
            ],
            attributes: [
                'date' => '日期',
                'items' => '彩种数据',
                'new_customers' => '新增客户',
                'sales' => '销售合计',
                'expenditure' => $isLotteryLedger ? '兑奖合计' : '支出合计',
                'handover_amount' => '交账金额',
                'photos' => '时段报表照片',
            ],
        );

        /** @var \Illuminate\Database\Eloquent\Collection */
        $lotteryTypes = Keyword::filter(['parent_key' => 'lottery_type'])
            ->oldest('sort')
            ->get();

        // 上报数据项的格式:
        // [
        //     ['id' => '上报数据类型1', 'sales' => '销售金额', 'expenditure' => '兑奖金额'],
        //     ['id' => '上报数据类型2', 'sales' => '销售金额', 'expenditure' => '兑奖金额'],
        // ]

        if ($isLotteryLedger) {
            $items = collect($validated['items'])->keyBy('id');

            /** @var \App\Models\Keyword */
            foreach ($lotteryTypes as $lotteryType) {
                $item = $items->get($lotteryType->key);

                if (is_null($item)) {
                    throw new RuntimeException("{$lotteryType->name}未填写上报数据");
                }

                Validator::validate(
                    data: $item,
                    rules: [
                        'sales' => ['bail', 'required', 'numeric', 'min:0'],
                        'expenditure' => ['bail', 'required', 'numeric', 'min:0'],
                    ],
                    attributes: [
                        'sales' => "[$lotteryType->name]销售金额",
                        'expenditure' => "[$lotteryType->name]兑奖金额",
                    ],
                );
            }
        }

        /** @var \App\Models\Ledger|null */
        $ledger = Ledger::where('store_id', $user->store_id)
            ->where('date', $validated['date'])
            ->first();

        if ($ledger && ! $ledger->allowReReport()) {
            throw new RuntimeException('上报数据已更新，不可重新上传');
        }

        $ratio = bcdiv($user->store->profit_ratio, 100, 2);

        // 计算预期佣金
        $validated['expected_commission'] = bcmul($validated['sales'], $ratio, 2);
        // 计算预期收益
        $validated['expected_income'] = bcsub($validated['expected_commission'], $validated['expenditure'], 2);

        try {
            DB::beginTransaction();

            if (is_null($ledger)) {
                $ledger = Ledger::create(
                    array_merge($validated, ['store_id' => $user->store_id])
                );
            } else {
                $ledger->update($validated);
                $ledger->items()->delete();
            }

            LedgerItem::insert(
                collect(
                    $isLotteryLedger ? $validated['items'] : [
                        [
                            'id' => 'ledger_item_type_other',
                            'sales' => $ledger->sales,
                            'expenditure' => $ledger->expenditure,
                        ],
                    ]
                )->map(fn ($item) => [
                    'date' => $ledger->date,
                    'store_id' => $ledger->store_id,
                    'ledger_id' => $ledger->id,
                    'ledger_item_type_id' => $item['id'],
                    'sales' => $item['sales'],
                    'expenditure' => $item['expenditure'],
                    'created_at' => $ledger->updated_at,
                    'updated_at' => $ledger->updated_at,
                ])->all()
            );

            // 自动完成总账录入任务
            $taskLedger = TaskLedger::where('store_id', $user->store_id)
                ->where('date', $ledger->date)
                ->first();
            if ($taskLedger) {
                $taskLedger->task()->update([
                    'task_status' => TaskStatus::Success,
                    'completed_at' => $ledger->created_at,
                ]);
            }

            DB::commit();
        } catch (Throwable $e) {
            DB::rollBack();

            throw tap($e, fn ($e) => report($e));
        }

        return $this->prepareLedger($ledger);
    }

    public function show(string $date, Request $request)
    {
        /** @var \App\Models\Employee */
        $user = $request->user();

        /** @var \App\Models\Ledger|null */
        $ledger = Ledger::with(['items'])
            ->where('store_id', $user->store_id)
            ->where('date', $date)
            ->first();

        return [
            'data' => $ledger ? $this->prepareLedger($ledger) : null,
        ];
    }

    protected function prepareLedger(Ledger $ledger)
    {
        return [
            'date' => $ledger->date,
            'items' => $ledger->items->map(fn ($item) => [
                'id' => $item->ledger_item_type_id,
                'sales' => $item->sales,
                'expenditure' => $item->expenditure,
            ]),
            'new_customers' => $ledger->new_customers,
            'sales' => $ledger->sales,
            'expenditure' => $ledger->expenditure,
            'handover_amount' => $ledger->handover_amount,
            'photos' => $ledger->photos,
        ];
    }
}