<?php

namespace App\Models\Production;

use App\Models\Members\User;
use App\Traits\Auditable;
use App\Traits\BelongsToTenant;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

/**
 * 작업지시 이슈 모델
 *
 * 작업지시 진행 중 발생한 이슈를 기록하고 추적
 */
class WorkOrderIssue extends Model
{
    use Auditable, BelongsToTenant;

    protected $table = 'work_order_issues';

    protected $fillable = [
        'tenant_id',
        'work_order_id',
        'title',
        'description',
        'priority',
        'status',
        'reported_by',
        'resolved_by',
        'resolved_at',
    ];

    protected $casts = [
        'resolved_at' => 'datetime',
    ];

    // ──────────────────────────────────────────────────────────────
    // 상수
    // ──────────────────────────────────────────────────────────────

    /**
     * 우선순위
     */
    public const PRIORITY_HIGH = 'high';

    public const PRIORITY_MEDIUM = 'medium';

    public const PRIORITY_LOW = 'low';

    public const PRIORITIES = [
        self::PRIORITY_HIGH,
        self::PRIORITY_MEDIUM,
        self::PRIORITY_LOW,
    ];

    /**
     * 상태
     */
    public const STATUS_OPEN = 'open';

    public const STATUS_IN_PROGRESS = 'in_progress';

    public const STATUS_RESOLVED = 'resolved';

    public const STATUSES = [
        self::STATUS_OPEN,
        self::STATUS_IN_PROGRESS,
        self::STATUS_RESOLVED,
    ];

    // ──────────────────────────────────────────────────────────────
    // 관계
    // ──────────────────────────────────────────────────────────────

    /**
     * 작업지시
     */
    public function workOrder(): BelongsTo
    {
        return $this->belongsTo(WorkOrder::class);
    }

    /**
     * 보고자
     */
    public function reporter(): BelongsTo
    {
        return $this->belongsTo(User::class, 'reported_by');
    }

    /**
     * 해결자
     */
    public function resolver(): BelongsTo
    {
        return $this->belongsTo(User::class, 'resolved_by');
    }

    // ──────────────────────────────────────────────────────────────
    // 스코프
    // ──────────────────────────────────────────────────────────────

    /**
     * 열린 이슈
     */
    public function scopeOpen($query)
    {
        return $query->where('status', self::STATUS_OPEN);
    }

    /**
     * 미해결 이슈 (open + in_progress)
     */
    public function scopeUnresolved($query)
    {
        return $query->whereIn('status', [self::STATUS_OPEN, self::STATUS_IN_PROGRESS]);
    }

    /**
     * 해결된 이슈
     */
    public function scopeResolved($query)
    {
        return $query->where('status', self::STATUS_RESOLVED);
    }

    /**
     * 우선순위별
     */
    public function scopePriority($query, string $priority)
    {
        return $query->where('priority', $priority);
    }

    /**
     * 높은 우선순위
     */
    public function scopeHighPriority($query)
    {
        return $query->where('priority', self::PRIORITY_HIGH);
    }

    // ──────────────────────────────────────────────────────────────
    // 헬퍼 메서드
    // ──────────────────────────────────────────────────────────────

    /**
     * 해결되었는지 확인
     */
    public function isResolved(): bool
    {
        return $this->status === self::STATUS_RESOLVED;
    }

    /**
     * 이슈 해결 처리
     */
    public function resolve(int $userId): void
    {
        $this->status = self::STATUS_RESOLVED;
        $this->resolved_by = $userId;
        $this->resolved_at = now();
        $this->save();
    }
}