<?php

namespace App\Models;

use App\Enums\TaskPriority;
use App\Enums\TaskStatus;
use App\Enums\TaskVisibility;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\MorphTo;
use Illuminate\Database\Eloquent\SoftDeletes;

class Task extends Model
{
    use SoftDeletes;

    protected $fillable = [
        'subject', 'description', 'taskable_type', 'taskable_id', 'assigned_to', 'assigned_by',
        'created_by', 'priority', 'status', 'due_at', 'started_at', 'completed_at', 'reminder_at',
        'parent_task_id', 'estimated_minutes', 'visibility', 'version',
    ];

    protected function casts(): array
    {
        return [
            'priority' => TaskPriority::class,
            'status' => TaskStatus::class,
            'visibility' => TaskVisibility::class,
            'due_at' => 'datetime',
            'started_at' => 'datetime',
            'completed_at' => 'datetime',
            'reminder_at' => 'datetime',
            'version' => 'integer',
            'estimated_minutes' => 'integer',
        ];
    }

    public function taskable(): MorphTo
    {
        return $this->morphTo();
    }

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

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

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

    public function parent(): BelongsTo
    {
        return $this->belongsTo(self::class, 'parent_task_id');
    }

    public function subtasks(): HasMany
    {
        return $this->hasMany(self::class, 'parent_task_id');
    }

    public function scopeActive(Builder $query): Builder
    {
        return $query->whereIn('status', [TaskStatus::Open->value, TaskStatus::InProgress->value]);
    }

    public function getIsOverdueAttribute(): bool
    {
        return $this->status->isActive() && $this->due_at?->isPast() === true;
    }
}