package jobs

import (
	"context"
	"fmt"
	"time"

	"quyun/app/model"
	"quyun/database/fields"

	"github.com/pkg/errors"
	. "github.com/riverqueue/river"
	log "github.com/sirupsen/logrus"
	_ "go.ipao.vip/atom"
	"go.ipao.vip/atom/contracts"
	_ "go.ipao.vip/atom/contracts"
)

var _ contracts.JobArgs = (*BalancePayNotify)(nil)

type BalancePayNotify struct {
	OrderNo string `json:"order_no"`
}

func (s BalancePayNotify) InsertOpts() InsertOpts {
	return InsertOpts{
		Queue:    QueueDefault,
		Priority: PriorityDefault,
	}
}

func (BalancePayNotify) Kind() string       { return "balance_pay_notify" }
func (a BalancePayNotify) UniqueID() string { return a.Kind() }

var _ Worker[BalancePayNotify] = (*BalancePayNotifyWorker)(nil)

// @provider(job)
type BalancePayNotifyWorker struct {
	WorkerDefaults[BalancePayNotify]
}

func (w *BalancePayNotifyWorker) Work(ctx context.Context, job *Job[BalancePayNotify]) error {
	log := log.WithField("job", job.Args.Kind())

	log.Infof("[Start] Working on job with strings: %+v", job.Args)
	defer log.Infof("[End] Finished %s", job.Args.Kind())

	order, err := model.OrdersModel().GetByOrderNo(context.Background(), job.Args.OrderNo)
	if err != nil {
		log.Errorf("GetByOrderNo error:%v", err)
		return err
	}

	if order.Status != fields.OrderStatusPending {
		log.Infof("Order %s is paid, processing...", job.Args.OrderNo)
		return JobCancel(fmt.Errorf("Order already paid, currently status: %d", order.Status))
	}

	user, err := model.UsersModel().GetByID(context.Background(), order.UserID)
	if err != nil {
		log.Errorf("GetByID error:%v", err)
		return errors.Wrap(err, "get user error")
	}

	payPrice := order.Price * int64(order.Discount) / 100

	order.PaymentMethod = "balance"
	order.Status = fields.OrderStatusCompleted

	meta := order.Meta.Data

	if user.Balance-meta.CostBalance < 0 {
		log.Errorf("User %d balance is not enough, current balance: %d, cost: %d", user.ID, user.Balance, payPrice)
		return JobCancel(fmt.Errorf("User %d balance is not enough, current balance: %d, cost: %d", user.ID, user.Balance, payPrice))
	}

	log.Infof("Updated order details: %+v", order)
	tx, err := model.Transaction(ctx)
	if err != nil {
		return errors.Wrap(err, "Transaction error")
	}
	defer tx.Rollback()

	// update user balance
	err = user.SetBalance(ctx, user.Balance-payPrice)
	if err != nil {
		log.WithError(err).Error("SetBalance error")
		return JobCancel(errors.Wrap(err, "set user balance failed"))
	}

	if err := user.BuyPosts(context.Background(), order.PostID, order.Price); err != nil {
		log.Errorf("BuyPosts error:%v", err)
		return errors.Wrap(err, "BuyPosts error")
	}

	if err := order.Update(context.Background()); err != nil {
		log.Errorf("Update order error:%v", err)
		return errors.Wrap(err, "Update order error")
	}
	if err := tx.Commit(); err != nil {
		log.Errorf("Commit error:%v", err)
		return errors.Wrap(err, "Commit error")
	}

	log.Infof("Successfully processed order %s", order.OrderNo)
	return nil
}

func (w *BalancePayNotifyWorker) NextRetry(job *Job[BalancePayNotify]) time.Time {
	return time.Now().Add(30 * time.Second)
}