<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Casts\Attribute;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Modules\SystemTool\Models\SysFileModel;
use Modules\SystemUser\Models\SysUserModel;

/**
 * 支付记录模型（小程序选择门店账单合并付款，提交汇款凭证；后台审核通过后关联账单批量置已支付）
 */
class PaymentModel extends Model
{
    use HasFactory;

    /** 支付方式：微信 */
    public const int METHOD_WECHAT = 1;
    /** 支付方式：支付宝 */
    public const int METHOD_ALIPAY = 2;
    /** 支付方式：对公汇款（银行卡） */
    public const int METHOD_BANK = 3;

    /** 支付方式中文名 */
    public const array METHOD_NAMES = [
        self::METHOD_WECHAT => '微信支付',
        self::METHOD_ALIPAY => '支付宝',
        self::METHOD_BANK => '对公汇款',
    ];

    /** 状态：待审核 */
    public const int STATUS_PENDING = 0;
    /** 状态：已通过 */
    public const int STATUS_APPROVED = 1;
    /** 状态：已拒绝 */
    public const int STATUS_REJECTED = 2;

    /** 状态中文名 */
    public const array STATUS_NAMES = [
        self::STATUS_PENDING => '待审核',
        self::STATUS_APPROVED => '已通过',
        self::STATUS_REJECTED => '已拒绝',
    ];

    protected $table = 'payment';
    protected $primaryKey = 'id';

    protected $fillable = [
        'payment_no',
        'store_id',
        'amount',
        'pay_method',
        'voucher_ids',
        'status',
        'remark',
        'audited_at',
        'auditor_id',
        'audit_remark',
    ];

    protected $casts = [
        'store_id' => 'integer',
        'amount' => 'decimal:2',
        'pay_method' => 'integer',
        'status' => 'integer',
        'audited_at' => 'datetime:Y-m-d H:i:s',
        'auditor_id' => 'integer',
        'created_at' => 'datetime:Y-m-d H:i:s',
    ];

    /**
     * 汇款凭证图片ID（逗号分隔字符串 ↔ 数组）
     */
    public function voucherIds(): Attribute
    {
        return Attribute::make(
            get: fn ($value) => $value === '' || $value === null ? [] : explode(',', (string) $value),
            set: fn ($value) => is_array($value) ? implode(',', $value) : $value,
        );
    }

    /**
     * 汇款凭证图片URL列表（保持提交顺序）
     *
     * @return string[]
     */
    public function voucherUrls(): array
    {
        $ids = array_map('intval', $this->voucher_ids);
        if ($ids === []) {
            return [];
        }
        $urls = [];
        foreach (SysFileModel::query()->whereIn('id', $ids)->get() as $file) {
            $urls[$file->id] = $file->preview_url;
        }
        $result = [];
        foreach ($ids as $id) {
            if (isset($urls[$id])) {
                $result[] = $urls[$id];
            }
        }
        return $result;
    }

    /**
     * 所属门店（含软删除门店，保证历史记录可见）
     */
    public function store(): BelongsTo
    {
        return $this->belongsTo(StoreModel::class, 'store_id', 'id')->withTrashed();
    }

    /**
     * 本支付记录合并付款的账单
     */
    public function bills(): HasMany
    {
        return $this->hasMany(BillModel::class, 'payment_id', 'id');
    }

    /**
     * 审核人（后台系统用户）
     */
    public function auditor(): BelongsTo
    {
        return $this->belongsTo(SysUserModel::class, 'auditor_id', 'id');
    }
}