package controller

import (
	"net/http"
	"strconv"

	"github.com/gin-gonic/gin"
	"github.com/songquanpeng/one-api/common/config"
	"github.com/songquanpeng/one-api/common/ctxkey"
	"github.com/songquanpeng/one-api/common/helper"
	"github.com/songquanpeng/one-api/common/random"
	"github.com/songquanpeng/one-api/model"
)

func GetAllRedemptions(c *gin.Context) {
	p, _ := strconv.Atoi(c.Query("p"))
	if p < 0 {
		p = 0
	}
	redemptions, err := model.GetAllRedemptions(p*config.ItemsPerPage, config.ItemsPerPage)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": err.Error(),
		})
		return
	}
	c.JSON(http.StatusOK, gin.H{
		"success": true,
		"message": "",
		"data":    redemptions,
	})
	return
}

func SearchRedemptions(c *gin.Context) {
	keyword := c.Query("keyword")
	redemptions, err := model.SearchRedemptions(keyword)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": err.Error(),
		})
		return
	}
	c.JSON(http.StatusOK, gin.H{
		"success": true,
		"message": "",
		"data":    redemptions,
	})
	return
}

func GetRedemption(c *gin.Context) {
	id, err := strconv.Atoi(c.Param("id"))
	if err != nil {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": err.Error(),
		})
		return
	}
	redemption, err := model.GetRedemptionById(id)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": err.Error(),
		})
		return
	}
	c.JSON(http.StatusOK, gin.H{
		"success": true,
		"message": "",
		"data":    redemption,
	})
	return
}

func AddRedemption(c *gin.Context) {
	redemption := model.Redemption{}
	err := c.ShouldBindJSON(&redemption)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": err.Error(),
		})
		return
	}
	if len(redemption.Name) == 0 || len(redemption.Name) > 20 {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": "The length of the redemption code name must be between 1-20",
		})
		return
	}
	if redemption.Count <= 0 {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": "The number of redemption codes must be greater than 0",
		})
		return
	}
	if redemption.Count > 100 {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": "The number of redemption codes generated in a batch cannot be greater than 100",
		})
		return
	}
	var keys []string
	for i := 0; i < redemption.Count; i++ {
		key := random.GetUUID()
		cleanRedemption := model.Redemption{
			UserId:      c.GetInt(ctxkey.Id),
			Name:        redemption.Name,
			Key:         key,
			CreatedTime: helper.GetTimestamp(),
			Quota:       redemption.Quota,
		}
		err = cleanRedemption.Insert()
		if err != nil {
			c.JSON(http.StatusOK, gin.H{
				"success": false,
				"message": err.Error(),
				"data":    keys,
			})
			return
		}
		keys = append(keys, key)
	}
	c.JSON(http.StatusOK, gin.H{
		"success": true,
		"message": "",
		"data":    keys,
	})
	return
}

func DeleteRedemption(c *gin.Context) {
	id, _ := strconv.Atoi(c.Param("id"))
	err := model.DeleteRedemptionById(id)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": err.Error(),
		})
		return
	}
	c.JSON(http.StatusOK, gin.H{
		"success": true,
		"message": "",
	})
	return
}

func UpdateRedemption(c *gin.Context) {
	statusOnly := c.Query("status_only")
	redemption := model.Redemption{}
	err := c.ShouldBindJSON(&redemption)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": err.Error(),
		})
		return
	}
	cleanRedemption, err := model.GetRedemptionById(redemption.Id)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": err.Error(),
		})
		return
	}
	if statusOnly != "" {
		cleanRedemption.Status = redemption.Status
	} else {
		// If you add more fields, please also update redemption.Update()
		cleanRedemption.Name = redemption.Name
		cleanRedemption.Quota = redemption.Quota
	}
	err = cleanRedemption.Update()
	if err != nil {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": err.Error(),
		})
		return
	}
	c.JSON(http.StatusOK, gin.H{
		"success": true,
		"message": "",
		"data":    cleanRedemption,
	})
	return
}