koel/app/Services/InteractionService.php

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<?php
namespace App\Services;
use App\Events\SongLikeToggled;
use App\Events\SongsBatchLiked;
use App\Events\SongsBatchUnliked;
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use App\Models\Interaction;
use App\Models\Song;
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use App\Models\User;
use Illuminate\Support\Collection;
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class InteractionService
{
/**
* Increase the number of times a song is played by a user.
*
* @return Interaction The affected Interaction object
*/
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public function increasePlayCount(string $songId, User $user): Interaction
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{
return tap(Interaction::query()->firstOrCreate([
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'song_id' => $songId,
'user_id' => $user->id,
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]), static function (Interaction $interaction): void {
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if (!$interaction->exists) {
$interaction->liked = false;
}
$interaction->last_played_at = now();
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++$interaction->play_count;
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$interaction->save();
});
}
/**
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* Like or unlike a song as a user.
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*
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* @return Interaction the affected Interaction object
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*/
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public function toggleLike(string $songId, User $user): Interaction
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{
return tap(Interaction::query()->firstOrCreate([
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'song_id' => $songId,
'user_id' => $user->id,
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]), static function (Interaction $interaction): void {
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$interaction->liked = !$interaction->liked;
$interaction->save();
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event(new SongLikeToggled($interaction));
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});
}
/**
* Like several songs at once as a user.
*
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* @param array<string> $songIds
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*
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* @return array<Interaction>|Collection The array of Interaction objects
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*/
public function batchLike(array $songIds, User $user): Collection
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{
$interactions = collect($songIds)->map(static function ($songId) use ($user): Interaction {
return tap(Interaction::query()->firstOrCreate([
'song_id' => $songId,
'user_id' => $user->id,
]), static function (Interaction $interaction): void {
$interaction->play_count ??= 0;
$interaction->liked = true;
$interaction->save();
});
});
event(new SongsBatchLiked($interactions->map(static fn (Interaction $item) => $item->song), $user));
return $interactions;
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}
/**
* Unlike several songs at once.
*
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* @param array<string> $songIds
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*/
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public function batchUnlike(array $songIds, User $user): void
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{
Interaction::query()
->whereIn('song_id', $songIds)
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->where('user_id', $user->id)
->update(['liked' => false]);
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event(new SongsBatchUnliked(Song::query()->find($songIds), $user));
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}
}