<?php

namespace App\Models;

use App\Models\Members\User;
use App\Models\Tenants\Tenant;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

/**
 * 회사 추가 신청 모델
 *
 * @property int $id
 * @property int $user_id 신청자 ID
 * @property string $business_number 사업자등록번호
 * @property string $company_name 회사명
 * @property string|null $ceo_name 대표자명
 * @property string|null $address 주소
 * @property string|null $phone 전화번호
 * @property string|null $email 이메일
 * @property string $status 상태 (pending, approved, rejected)
 * @property string|null $message 신청 메시지
 * @property string|null $reject_reason 반려 사유
 * @property array|null $barobill_response 바로빌 검증 응답
 * @property int|null $approved_by 승인/반려 처리자
 * @property int|null $created_tenant_id 생성된 테넌트 ID
 * @property \Carbon\Carbon|null $processed_at 처리일시
 * @property \Carbon\Carbon $created_at
 * @property \Carbon\Carbon $updated_at
 */
class CompanyRequest extends Model
{
    // =========================================================================
    // 상수 정의
    // =========================================================================

    /** 상태 */
    public const STATUS_PENDING = 'pending';

    public const STATUS_APPROVED = 'approved';

    public const STATUS_REJECTED = 'rejected';

    public const STATUSES = [
        self::STATUS_PENDING,
        self::STATUS_APPROVED,
        self::STATUS_REJECTED,
    ];

    /** 상태 라벨 */
    public const STATUS_LABELS = [
        self::STATUS_PENDING => '대기중',
        self::STATUS_APPROVED => '승인',
        self::STATUS_REJECTED => '반려',
    ];

    // =========================================================================
    // 모델 설정
    // =========================================================================

    protected $fillable = [
        'user_id',
        'business_number',
        'company_name',
        'ceo_name',
        'address',
        'phone',
        'email',
        'status',
        'message',
        'reject_reason',
        'barobill_response',
        'approved_by',
        'created_tenant_id',
        'processed_at',
    ];

    protected $casts = [
        'barobill_response' => 'array',
        'processed_at' => 'datetime',
    ];

    protected $attributes = [
        'status' => self::STATUS_PENDING,
    ];

    // =========================================================================
    // 관계
    // =========================================================================

    /**
     * 신청자
     */
    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class);
    }

    /**
     * 처리자 (승인/반려)
     */
    public function approver(): BelongsTo
    {
        return $this->belongsTo(User::class, 'approved_by');
    }

    /**
     * 생성된 테넌트
     */
    public function createdTenant(): BelongsTo
    {
        return $this->belongsTo(Tenant::class, 'created_tenant_id');
    }

    // =========================================================================
    // 스코프
    // =========================================================================

    /**
     * 대기중인 신청만
     */
    public function scopePending($query)
    {
        return $query->where('status', self::STATUS_PENDING);
    }

    /**
     * 승인된 신청만
     */
    public function scopeApproved($query)
    {
        return $query->where('status', self::STATUS_APPROVED);
    }

    /**
     * 반려된 신청만
     */
    public function scopeRejected($query)
    {
        return $query->where('status', self::STATUS_REJECTED);
    }

    /**
     * 상태 필터
     */
    public function scopeOfStatus($query, string $status)
    {
        return $query->where('status', $status);
    }

    // =========================================================================
    // 접근자
    // =========================================================================

    /**
     * 상태 라벨
     */
    public function getStatusLabelAttribute(): string
    {
        return self::STATUS_LABELS[$this->status] ?? $this->status;
    }

    /**
     * 대기중 여부
     */
    public function getIsPendingAttribute(): bool
    {
        return $this->status === self::STATUS_PENDING;
    }

    /**
     * 승인됨 여부
     */
    public function getIsApprovedAttribute(): bool
    {
        return $this->status === self::STATUS_APPROVED;
    }

    /**
     * 반려됨 여부
     */
    public function getIsRejectedAttribute(): bool
    {
        return $this->status === self::STATUS_REJECTED;
    }

    /**
     * 사업자등록번호 포맷 (하이픈 포함)
     */
    public function getFormattedBusinessNumberAttribute(): string
    {
        $num = preg_replace('/[^0-9]/', '', $this->business_number);
        if (strlen($num) === 10) {
            return substr($num, 0, 3).'-'.substr($num, 3, 2).'-'.substr($num, 5, 5);
        }

        return $this->business_number;
    }

    // =========================================================================
    // 헬퍼 메서드
    // =========================================================================

    /**
     * 승인 처리
     */
    public function approve(int $approverId, int $tenantId): bool
    {
        if (! $this->is_pending) {
            return false;
        }

        $this->status = self::STATUS_APPROVED;
        $this->approved_by = $approverId;
        $this->created_tenant_id = $tenantId;
        $this->processed_at = now();

        return $this->save();
    }

    /**
     * 반려 처리
     */
    public function reject(int $approverId, ?string $reason = null): bool
    {
        if (! $this->is_pending) {
            return false;
        }

        $this->status = self::STATUS_REJECTED;
        $this->approved_by = $approverId;
        $this->reject_reason = $reason;
        $this->processed_at = now();

        return $this->save();
    }
}