65 lines
1.5 KiB
PHP
65 lines
1.5 KiB
PHP
<?php
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declare(strict_types=1);
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namespace App\Services;
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use App\Models\Group;
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use App\Models\GroupFollow;
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use App\Models\User;
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use Illuminate\Support\Facades\DB;
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class GroupFollowService
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{
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public function follow(Group $group, User $user): bool
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{
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if ($group->hasActiveMember($user)) {
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return false;
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}
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return DB::transaction(function () use ($group, $user): bool {
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$created = GroupFollow::query()->firstOrCreate([
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'group_id' => $group->id,
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'user_id' => $user->id,
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]);
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$this->syncFollowerCount($group);
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return $created->wasRecentlyCreated;
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});
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}
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public function unfollow(Group $group, User $user): bool
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{
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$deleted = GroupFollow::query()
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->where('group_id', $group->id)
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->where('user_id', $user->id)
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->delete() > 0;
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if ($deleted) {
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$this->syncFollowerCount($group);
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}
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return $deleted;
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}
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public function isFollowing(Group $group, ?User $user): bool
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{
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if (! $user) {
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return false;
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}
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return GroupFollow::query()
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->where('group_id', $group->id)
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->where('user_id', $user->id)
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->exists();
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}
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public function syncFollowerCount(Group $group): void
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{
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$group->forceFill([
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'followers_count' => GroupFollow::query()->where('group_id', $group->id)->count(),
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'last_activity_at' => now(),
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])->save();
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}
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} |