<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Builder;

class Task extends Model {
    use HasFactory;

    protected $fillable = [
        'user_id', 'project_id', 'title', 'description', 'priority',
        'estimate_min', 'deadline', 'recurrence',
        'done', 'done_at', 'snooze_until',
    ];

    protected $casts = [
        'done'         => 'boolean',
        'done_at'      => 'datetime',
        'snooze_until' => 'datetime',
        'deadline'     => 'datetime',
    ];

    public function user(): BelongsTo    { return $this->belongsTo(User::class); }
    public function project(): BelongsTo { return $this->belongsTo(Project::class); }
    public function tags(): BelongsToMany { return $this->belongsToMany(Tag::class); }

    /** Tareas activas (no hechas y no snoozed) */
    public function scopeActive(Builder $q): Builder {
        return $q->where('done', false)
            ->where(function ($q2) {
                $q2->whereNull('snooze_until')
                   ->orWhere('snooze_until', '<=', now());
            });
    }

    public function scopeForUser(Builder $q, int $userId): Builder {
        return $q->where('user_id', $userId);
    }

    public function getNextDueInAttribute(): int {
        if (! $this->deadline) return 0;
        if ($this->deadline->isPast()) return 0;
        return max(0, now()->diffInSeconds($this->deadline, false));
    }
}