<?php

namespace App\Models\Business;

use App\Abstracts\Model;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\HasOne;

class CourierQuoteChange extends Model
{
    public const STATUS_DRAFT = 'draft';
    public const STATUS_PENDING_REVIEW = 'pending_review';
    public const STATUS_RETURNED = 'returned';
    public const STATUS_APPROVED = 'approved';

    public const RECALCULATION_NOT_REQUIRED = 'not_required';
    public const RECALCULATION_PENDING = 'pending';
    public const RECALCULATION_BLOCKED = 'blocked';

    protected $table = 'business_courier_quote_changes';

    protected $fillable = [
        'company_id', 'number', 'source_quote_id', 'source_sheet_name', 'carrier_name', 'quote_type',
        'change_type', 'status', 'effective_date', 'is_retrospective', 'recalculation_status',
        'recalculation_note', 'summary', 'created_by', 'submitted_by', 'submitted_at', 'approved_by',
        'approved_at', 'new_quote_version_id',
    ];

    protected $casts = [
        'company_id' => 'integer',
        'effective_date' => 'date',
        'is_retrospective' => 'boolean',
        'submitted_at' => 'datetime',
        'approved_at' => 'datetime',
    ];

    public function items(): HasMany
    {
        return $this->hasMany(CourierQuoteChangeItem::class, 'quote_change_id')->orderBy('position');
    }

    public function events(): HasMany
    {
        return $this->hasMany(CourierQuoteChangeEvent::class, 'quote_change_id')->orderBy('created_at');
    }

    public function version(): HasOne
    {
        return $this->hasOne(CourierQuoteVersion::class, 'source_change_id');
    }

    public function isEditable(): bool
    {
        return in_array($this->status, [self::STATUS_DRAFT, self::STATUS_RETURNED], true);
    }

    public function isRetrospective(): bool
    {
        return (bool) $this->is_retrospective;
    }

    public function recalculationStatusLabel(): string
    {
        return match ($this->recalculation_status) {
            self::RECALCULATION_NOT_REQUIRED => '无需追溯',
            self::RECALCULATION_PENDING => '待追溯核算',
            self::RECALCULATION_BLOCKED => '核算受阻',
            default => $this->recalculation_status,
        };
    }

    public function statusLabel(): string
    {
        return match ($this->status) {
            self::STATUS_DRAFT => '草稿',
            self::STATUS_PENDING_REVIEW => '待审核',
            self::STATUS_RETURNED => '已退回',
            self::STATUS_APPROVED => '已审核',
            default => $this->status,
        };
    }
}