package controller

import (
	"github.com/gin-gonic/gin"
	"net/http"
	"one-api/common"
	"one-api/model"
	"strconv"
)

func GetAllTokens(c *gin.Context) {
	userId := c.GetInt("id")
	p, _ := strconv.Atoi(c.Query("p"))
	if p < 0 {
		p = 0
	}
	tokens, err := model.GetAllUserTokens(userId, p*common.ItemsPerPage, common.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":    tokens,
	})
	return
}

func SearchTokens(c *gin.Context) {
	userId := c.GetInt("id")
	keyword := c.Query("keyword")
	tokens, err := model.SearchUserTokens(userId, 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":    tokens,
	})
	return
}

func GetToken(c *gin.Context) {
	id, err := strconv.Atoi(c.Param("id"))
	userId := c.GetInt("id")
	if err != nil {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": err.Error(),
		})
		return
	}
	token, err := model.GetTokenByIds(id, userId)
	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":    token,
	})
	return
}

func GetTokenStatus(c *gin.Context) {
	tokenId := c.GetInt("token_id")
	userId := c.GetInt("id")
	token, err := model.GetTokenByIds(tokenId, userId)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": err.Error(),
		})
		return
	}
	expiredAt := token.ExpiredTime
	if expiredAt == -1 {
		expiredAt = 0
	}
	c.JSON(http.StatusOK, gin.H{
		"object":          "credit_summary",
		"total_granted":   token.RemainQuota,
		"total_used":      0, // not supported currently
		"total_available": token.RemainQuota,
		"expires_at":      expiredAt * 1000,
	})
}

func AddToken(c *gin.Context) {
	isAdmin := c.GetInt("role") >= common.RoleAdminUser
	token := model.Token{}
	err := c.ShouldBindJSON(&token)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": err.Error(),
		})
		return
	}
	if len(token.Name) == 0 || len(token.Name) > 20 {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": "令牌名称长度必须在1-20之间",
		})
		return
	}
	cleanToken := model.Token{
		UserId:       c.GetInt("id"),
		Name:         token.Name,
		Key:          common.GetUUID(),
		CreatedTime:  common.GetTimestamp(),
		AccessedTime: common.GetTimestamp(),
		ExpiredTime:  token.ExpiredTime,
	}
	if isAdmin {
		cleanToken.RemainQuota = token.RemainQuota
		cleanToken.UnlimitedQuota = token.UnlimitedQuota
	} else {
		userId := c.GetInt("id")
		quota, err := model.GetUserQuota(userId)
		if err != nil {
			c.JSON(http.StatusOK, gin.H{
				"success": false,
				"message": err.Error(),
			})
			return
		}
		cleanToken.RemainQuota = quota
	}
	err = cleanToken.Insert()
	if err != nil {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": err.Error(),
		})
		return
	}
	if !isAdmin {
		// update user quota
		err = model.DecreaseUserQuota(c.GetInt("id"), cleanToken.RemainQuota)
	}
	c.JSON(http.StatusOK, gin.H{
		"success": true,
		"message": "",
	})
	return
}

func DeleteToken(c *gin.Context) {
	id, _ := strconv.Atoi(c.Param("id"))
	userId := c.GetInt("id")
	err := model.DeleteTokenById(id, userId)
	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 UpdateToken(c *gin.Context) {
	isAdmin := c.GetInt("role") >= common.RoleAdminUser
	userId := c.GetInt("id")
	statusOnly := c.Query("status_only")
	token := model.Token{}
	err := c.ShouldBindJSON(&token)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": err.Error(),
		})
		return
	}
	cleanToken, err := model.GetTokenByIds(token.Id, userId)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": err.Error(),
		})
		return
	}
	if token.Status == common.TokenStatusEnabled {
		if cleanToken.Status == common.TokenStatusExpired && cleanToken.ExpiredTime <= common.GetTimestamp() {
			c.JSON(http.StatusOK, gin.H{
				"success": false,
				"message": "令牌已过期，无法启用，请先修改令牌过期时间",
			})
			return
		}
		if cleanToken.Status == common.TokenStatusExhausted && cleanToken.RemainQuota <= 0 && !cleanToken.UnlimitedQuota {
			c.JSON(http.StatusOK, gin.H{
				"success": false,
				"message": "令牌可用次数已用尽，无法启用，请先修改令牌剩余次数，或者设置为无限次数",
			})
			return
		}
	}
	if statusOnly != "" {
		cleanToken.Status = token.Status
	} else {
		// If you add more fields, please also update token.Update()
		cleanToken.Name = token.Name
		cleanToken.ExpiredTime = token.ExpiredTime
		if isAdmin {
			cleanToken.RemainQuota = token.RemainQuota
			cleanToken.UnlimitedQuota = token.UnlimitedQuota
		}
	}
	err = cleanToken.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":    cleanToken,
	})
	return
}

type topUpRequest struct {
	Id  int    `json:"id"`
	Key string `json:"key"`
}

func TopUp(c *gin.Context) {
	req := topUpRequest{}
	err := c.ShouldBindJSON(&req)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"message": err.Error(),
		})
		return
	}
	quota, err := model.Redeem(req.Key, req.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":    quota,
	})
	return
}