<?php

namespace App\Services\Document;

use App\Enums\DocumentPriorityEnum;
use App\Enums\MediaCollectionEnum;
use App\Enums\PetGenderEnum;
use App\Enums\PetTypeEnum;
use App\Models\Document;
use App\Models\Pet;
use App\Models\User;
use App\Services\FileStorageService;
use App\Services\Shift\ShiftScheduleService;
use Illuminate\Support\Facades\DB;

class FastRequestService
{
    protected FileStorageService $fileStorageService;

    protected ShiftScheduleService $shiftScheduleService;

    public function __construct(FileStorageService $fileStorageService, ShiftScheduleService $shiftScheduleService)
    {
        $this->fileStorageService = $fileStorageService;
        $this->shiftScheduleService = $shiftScheduleService;
    }

    public function create(User $requester, array $data, array $historyFiles = [], array $scanFiles = []): Document
    {
        return DB::transaction(function () use ($requester, $data, $historyFiles, $scanFiles) {
            $pet = $this->resolvePet($requester, $data);

            $document = Document::create([
                'modality' => $data['modality'],
                'priority' => DocumentPriorityEnum::fromName($data['priority'])->value,
                'note' => $data['note'] ?? null,
                'submitted_at' => now(),
                'pet_id' => $pet->id,
                'requester_id' => $requester->id,
            ]);

            $this->attachFiles($document, $historyFiles, MediaCollectionEnum::History);
            $this->attachFiles($document, $scanFiles, MediaCollectionEnum::Primary);

            $doctorId = $data['doctor_id']
                ?? $this->shiftScheduleService->autoSelectDoctor(now())?->id;

            if (!empty($doctorId)) {
                $document->assignments()->create([
                    'user_id' => $doctorId,
                    'role' => 'رادیولوژیست',
                ]);
            }

            return $document;
        });
    }

    protected function resolvePet(User $requester, array $data): Pet
    {
        if (!empty($data['pet_id'])) {
            return Pet::findOrFail($data['pet_id']);
        }

        $pet = $data['pet'];

        return Pet::create([
            'name' => $pet['name'],
            'type' => PetTypeEnum::fromName($pet['type'])->value,
            'gender' => isset($pet['gender']) ? PetGenderEnum::fromName($pet['gender'])->value : PetGenderEnum::Unknown->value,
            'breed' => $pet['breed'] ?? null,
            'weight' => $pet['weight'] ?? null,
            'sterilized' => $pet['sterilized'] ?? null,
            'birthday' => isset($pet['age']) ? now()->subYears((int) $pet['age'])->startOfDay() : null,
            'owner_id' => $requester->id,
        ]);
    }

    protected function attachFiles(Document $document, array $files, MediaCollectionEnum $collection): void
    {
        foreach ($files as $file) {
            $medium = $this->fileStorageService->storeFile($file);
            $document->media()->attach($medium->id, ['collection' => $collection->value]);
        }
    }
}