<?php

namespace App\Policies;

use App\Models\Ledger;
use App\Models\Mutation;
use App\Models\User;

class MutationPolicy
{
    /**
     * Determine whether the user can view the mutation.
     */
    public function view(User $user, Mutation $mutation): bool
    {
        return $user->can('view', $mutation->ledger);
    }

    /**
     * Determine whether the user can create mutations.
     */
    public function create(User $user, Ledger $ledger): bool
    {
        $dynamic = $ledger->dynamic;

        return $dynamic->participants()->where('user_id', $user->id)->exists();
    }

    /**
     * Determine whether the user can update the mutation.
     */
    public function update(User $user, Mutation $mutation): bool
    {
        $dynamic = $mutation->ledger->dynamic;
        $isOwner = $dynamic->participants()->where('user_id', $user->id)->where('role', 'owner')->exists();

        return $isOwner && $mutation->status === 'pending';
    }

    /**
     * Determine whether the user can void the mutation.
     */
    public function void(User $user, Mutation $mutation): bool
    {
        $dynamic = $mutation->ledger->dynamic;
        $isOwner = $dynamic->participants()->where('user_id', $user->id)->where('role', 'owner')->exists();

        return $isOwner && $mutation->status !== 'voided';
    }
}