<?php

namespace App\Http\Controllers\Api;

use App\Admin\Services\WorkFlowService;
use App\Enums\TaskHygieneStatus;
use App\Exceptions\RuntimeException;
use App\Http\Resources\TaskResource;
use App\Models\Task;
use App\Models\TaskHygiene;
use App\Models\TaskLedger;
use Illuminate\Contracts\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Relations\MorphTo;
use Illuminate\Database\Eloquent\Relations\Relation;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Throwable;

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

        $orderBy = <<<'MySQL'
        CASE
            WHEN task_status = 1 THEN 100
            ELSE 0
        END
MySQL;

        /** @var \Illuminate\Database\Eloquent\Collection */
        $tasks = Task::with([
            'taskable' => function (MorphTo $morphTo) {
                $morphTo->morphWith([
                    TaskHygiene::class => ['workflow'],
                    TaskLedger::class,
                ]);
            },
        ])
            ->whereHasMorph(
                'taskable',
                [TaskHygiene::class, TaskLedger::class],
                function (Builder $query, string $type) use ($user) {
                    switch ($type) {
                        case TaskLedger::class:
                        case TaskHygiene::class:
                            if ($user->isStoreMaster()) {
                                $query->where('store_id', $user->store_id);
                            } else {
                                $query->whereRaw('1!=1');
                            }
                            break;
                    }
                }
            )
            ->orderBy(DB::raw($orderBy), 'DESC')
            ->orderBy('start_at', 'ASC')
            ->orderBy('end_at', 'ASC')
            ->simplePaginate($request->query('per_page', 20));

        return TaskResource::collection(
            $tasks->through(function ($task) {
                $task->taskable->setRelation('task', $task->withoutRelations());

                return $task;
            })
        );
    }

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

        $task = Task::with([
            'taskable' => function (MorphTo $morphTo) {
                $morphTo->morphWith([
                    TaskHygiene::class => ['workflow', 'store', 'storeMaster'],
                    TaskLedger::class => ['store', 'storeMaster'],
                ]);
            },
        ])->whereHasMorph(
            'taskable',
            [TaskHygiene::class, TaskLedger::class],
            function (Builder $query, string $type) use ($user) {
                switch ($type) {
                    case TaskLedger::class:
                    case TaskHygiene::class:
                        if ($user->isStoreMaster()) {
                            $query->where('store_id', $user->store_id);
                        } else {
                            $query->whereRaw('1!=1');
                        }
                        break;
                }
            }
        )->findOrFail($id);

        $task->taskable->setRelation('task', $task->withoutRelations());

        return TaskResource::make($task);
    }

    public function submit($id, Request $request)
    {
        $task = Task::findOrFail($id);

        try {
            DB::beginTransaction();

            $this->handleTaskSubmit($task, $request);

            DB::commit();
        } catch (Throwable $th) {
            DB::rollBack();
            throw tap($th, fn ($th) => report($th));
        }

        return response()->noContent();
    }

    protected function handleTaskSubmit(Task $task, Request $request): void
    {
        /** @var \App\Models\Employee */
        $user = $request->user();

        switch (Relation::getMorphedModel($task->taskable_type)) {
            case TaskHygiene::class:
                $request->validate(
                    rules: [
                        'task_hygiene.description' => ['bail', 'required', 'max:255'],
                        'task_hygiene.photos' => ['bail', 'required', 'array'],
                    ],
                    attributes: [
                        'task_hygiene.description' => '清洁范围',
                        'task_hygiene.photos' => '清洁结果',
                    ],
                );

                switch ($task->taskable->task_status) {
                    case TaskHygieneStatus::None:
                        throw new RuntimeException('任务未开始');
                        break;

                    case TaskHygieneStatus::Checking:
                        throw new RuntimeException('任务审核中');
                        break;

                    case TaskHygieneStatus::Success:
                        throw new RuntimeException('任务已完成');
                        break;
                }

                $task->taskable->update($request->input('task_hygiene'));

                (new WorkFlowService())->apply($task->taskable->workflow, $user);

                break;

            default:
                throw new RuntimeException('任务不可提交');
                break;
        }
    }
}