<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Support\Str;

class ProjectInvitation extends Model
{
    protected $fillable = [
        'project_id',
        'invited_by',
        'email',
        'role',
        'token',
        'expires_at',
        'accepted_at',
    ];

    protected $casts = [
        'expires_at' => 'datetime',
        'accepted_at' => 'datetime',
    ];

    protected static function booted(): void
    {
        static::creating(function (ProjectInvitation $invitation) {
            $invitation->token ??= Str::random(32);
            $invitation->expires_at ??= now()->addDays(7);
        });
    }

    public function project(): BelongsTo
    {
        return $this->belongsTo(Project::class);
    }

    public function inviter(): BelongsTo
    {
        return $this->belongsTo(User::class, 'invited_by');
    }

    public function isExpired(): bool
    {
        return $this->expires_at->isPast();
    }

    public function isPending(): bool
    {
        return !$this->accepted_at && !$this->isExpired();
    }

    public function accept(User $user): void
    {
        if ($this->isExpired()) {
            throw new \RuntimeException('Invitation has expired');
        }

        if ($this->accepted_at) {
            throw new \RuntimeException('Invitation has already been accepted');
        }

        $this->project->users()->attach($user->id, ['role' => $this->role]);
        $this->update(['accepted_at' => now()]);
    }
}