<?php

namespace App\Models\Pay;

use App\Models\BaseModel;
use App\Models\BaseModelTrait;
use App\Models\YiiModels\User;
use Exception;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\MorphTo;

/**
 * App\Models\Pay\Bill
 *
 * @property int $id
 * @property string|null $mchid 商户ID
 * @property string|null $appid 应用ID
 * @property string|null $billable_type 多态模型名称
 * @property int|null $billable_id 多态模型ID
 * @property int|null $user_id 用户ID
 * @property string|null $openid Openid(微信支付涉及)
 * @property string|null $title 订单名称
 * @property int|null $pay_way 支付方式
 * @property string $pay_amount 支付发起金额
 * @property string $pay_no 商户订单号
 * @property string|null $pay_service_no 支付商订单号
 * @property string|null $pay_at 支付成功时间
 * @property int $bill_status 账单状态
 * @property int $pay_status 支付状态
 * @property string|null $extra 额外数据
 * @property string|null $remark 备注
 * @property \Illuminate\Support\Carbon|null $created_at
 * @property \Illuminate\Support\Carbon|null $updated_at
 * @property-read \Illuminate\Database\Eloquent\Model|\Eloquent $billable
 * @property-read string $bill_status_string 账单状态名称
 * @property-read float $can_refund_amount 可退款的金额
 * @property-read string $created_at_format 创建时间的格式化
 * @property-read string $pay_status_string 支付状态名称
 * @property-read string $pay_way_alias 支付方式别名
 * @property-read string $pay_way_string 支付方式名称
 * @property-read float $refunded_amount 已退款的金额
 * @property-read float $refunding_amount 退款中的金额
 * @property-read string $status_string 状态名称
 * @property-read string $updated_at_format 更新时间的格式化
 * @property-read \Illuminate\Database\Eloquent\Collection|\App\Models\Pay\RefundBill[] $refunds 退款单
 * @property-read int|null $refunds_count
 * @property-read \App\Models\YiiModels\User|null $user 用户
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Models\Pay\Bill newModelQuery()
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Models\Pay\Bill newQuery()
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Models\Pay\Bill query()
 * @mixin \Eloquent
 */
class Bill extends BaseModel
{
    use BaseModelTrait;

    protected $attributes = [
        'bill_status' => self::BILL_STATUS_UNSUCCESSFUL,
        'pay_status' => self::PAY_STATUS_UN_PAY,
    ];

    // 支付方式
    const PAY_WAY_ALIAS = [
        self::PAY_WAY_WECHAT => 'wechat',
        self::PAY_WAY_ALIPAY => 'alipay',
        self::PAY_WAY_UNIPAY => 'unipay',
    ];
    const PAY_WAY = [
        self::PAY_WAY_WECHAT => '微信',
        self::PAY_WAY_ALIPAY => '支付宝',
        self::PAY_WAY_UNIPAY => '银联',
    ];
    const PAY_WAY_WECHAT = 1;
    const PAY_WAY_ALIPAY = 2;
    const PAY_WAY_UNIPAY = 3;

    // 账单状态
    const BILL_STATUS_LABEL = [
        self::BILL_STATUS_UNSUCCESSFUL => 'warning',
        self::BILL_STATUS_SUCCESSFUL => 'success',
    ];
    const BILL_STATUS = [
        self::BILL_STATUS_UNSUCCESSFUL => '未支付成功过',
        self::BILL_STATUS_SUCCESSFUL => '支付成功过',
    ];
    const BILL_STATUS_UNSUCCESSFUL = 0;
    const BILL_STATUS_SUCCESSFUL = 1;

    // 支付状态
    const PAY_STATUS_LABEL = [
        self::PAY_STATUS_UN_PAY => 'info',
        self::PAY_STATUS_SUCCESS => 'success',
        self::PAY_STATUS_FAIL => 'primary',
        self::PAY_STATUS_CANCEL => 'default',
        self::PAY_STATUS_REFUND_PART => 'warning',
        self::PAY_STATUS_REFUND_FULL => 'danger',
    ];
    const PAY_STATUS = [
        self::PAY_STATUS_UN_PAY => '未支付',
        self::PAY_STATUS_SUCCESS => '付款成功',
        self::PAY_STATUS_FAIL => '付款失败',
        self::PAY_STATUS_CANCEL => '付款取消',
        self::PAY_STATUS_REFUND_PART => '部分退款',
        self::PAY_STATUS_REFUND_FULL => '全额退款',
    ];
    const PAY_STATUS_UN_PAY = 1;
    const PAY_STATUS_SUCCESS = 2;
    const PAY_STATUS_FAIL = 4;
    const PAY_STATUS_CANCEL = 5;
    const PAY_STATUS_REFUND_PART = 7;
    const PAY_STATUS_REFUND_FULL = 8;

    protected static function boot()
    {
        parent::boot();
        static::creating(function (self $bill) {
            if (!$bill->pay_no) {
                $bill->pay_no = self::getNewNumber('pay_no');
            }
        });
    }

    public function billable(): MorphTo
    {
        return $this->morphTo();
    }

    /**
     * @comment 用户
     * @return BelongsTo
     */
    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class, 'user_id');
    }

    /**
     * @comment 退款单
     * @return HasMany
     */
    public function refunds(): HasMany
    {
        return $this->hasMany(RefundBill::class, 'bill_id');
    }

    /**
     * pay_way_string
     *
     * @comment 支付方式名称
     * @return string
     */
    public function getPayWayStringAttribute(): string
    {
        return self::PAY_WAY[$this->pay_way] ?? '';
    }

    /**
     * pay_way_alias
     *
     * @comment 支付方式别名
     * @return string
     */
    public function getPayWayAliasAttribute(): string
    {
        return self::PAY_WAY_ALIAS[$this->pay_way] ?? '';
    }

    /**
     * bill_status_string
     *
     * @comment 账单状态名称
     * @return string
     */
    public function getBillStatusStringAttribute(): string
    {
        return self::BILL_STATUS[$this->bill_status] ?? '';
    }

    /**
     * pay_status_string
     *
     * @comment 支付状态名称
     * @return string
     */
    public function getPayStatusStringAttribute(): string
    {
        return self::PAY_STATUS[$this->pay_status] ?? '';
    }

    /**
     * refunded_amount
     *
     * @comment 已退款的金额
     * @return float
     */
    public function getRefundedAmountAttribute(): float
    {
        return $this->refunds->where('refund_status', 2)->sum('refund_amount');
    }

    /**
     * refunding_amount
     *
     * @comment 退款中的金额
     * @return float
     */
    public function getRefundingAmountAttribute(): float
    {
        return $this->refunds->where('refund_status', 1)->sum('refund_amount');
    }

    /**
     * can_refund_amount
     *
     * @comment 可退款的金额
     * @return float
     */
    public function getCanRefundAmountAttribute(): float
    {
        return $this->pay_amount - $this->refunded_amount - $this->refunding_amount;
    }

    /**
     * 支付回调通知处理 - 异步.
     *
     * @param array $data
     * @param int $payWay
     * @return bool|string
     */
    public static function handleNotify(array $data, int $payWay): bool|string
    {
        $bill = self::where('pay_no', $data['pay_no'])->where('pay_way', $payWay)->first();
        if (!$bill) {
            log_i("找不到支付订单信息：{$data['pay_no']}", 'pay-bill-error', $bill->pay_way_alias);
            return '找不到支付订单信息';
        }
        if ($bill->pay_status != self::PAY_STATUS_UN_PAY) {
            // [付款失败, 付款取消] 安排退款
            if (in_array($bill->pay_status, [self::PAY_STATUS_FAIL, self::PAY_STATUS_CANCEL])) {
                // todo
                return true;
            }
            log_i("订单状态非未支付：{$data['pay_no']}，订单状态：{$bill->pay_status_string}", 'pay-bill-error', $bill->pay_way_alias);
            return '订单状态非未支付';
        }
        if ($bill->pay_amount != $data['pay_amount']) {
            log_i("订单支付金额不一致：{$data['pay_no']}，订单金额：{$bill->pay_amount}，回调金额：{$data['pay_amount']}", 'pay-bill-error', $bill->pay_way_alias);
            return '订单支付金额不一致';
        }

        $bill->fill([
            'mchid' => $data['mchid'],
            'appid' => $data['appid'],
            'pay_service_no' => $data['pay_service_no'],
            'pay_at' => $data['pay_at'],
            'bill_status' => self::BILL_STATUS_SUCCESSFUL,
            'pay_status' => self::PAY_STATUS_SUCCESS,
        ]);
        $bill->save();

        try {
            $bill->loadMissing(['billable']);
            if ($bill->billable) {
                $bill->billable->handlePied($bill);
            }
        } catch (Exception $exception) {

        }
        return true;
    }
}