transaction-controller.go

func (u userController) TransferMoney(c *gin.Context) {
	log.Print("[UserController]...get all Users")

	txHandle := c.MustGet("db_trx").(*gorm.DB)

	var moneyTransfer model.MoneyTransfer
	if err := c.ShouldBindJSON(&moneyTransfer); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}

	if err := u.userService.WithTrx(txHandle).IncrementMoney(moneyTransfer.Receiver, moneyTransfer.Amount); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Error while incrementing money"})
		return
	}

	if err := u.userService.WithTrx(txHandle).DecrementMoney(moneyTransfer.Giver, moneyTransfer.Amount); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Error while decrementing money"})
		return
	}

	c.JSON(http.StatusOK, gin.H{"msg": "Successfully Money Transferred"})
}