package response

import (
	"github.com/gin-gonic/gin"
	"net/http"
	"website-nav/component"
	"website-nav/utils"
)

type PageData[T any] struct {
	Current   int   `json:"current"`   // 当前页码
	Size      int   `json:"size"`      // 每页数量
	Total     int64 `json:"total"`     // 总数
	TotalPage int   `json:"totalPage"` // 总页数
	Records   T     `json:"records"`   // 返回数据
}

type HttpResponse struct{ *gin.Context }

func R(c *gin.Context) HttpResponse {
	return HttpResponse{c}
}

// OK
// @description: success
// @receiver h
func (h HttpResponse) OK() {
	h.Context.JSON(http.StatusOK, gin.H{
		"code":    http.StatusOK,
		"message": "success",
	})
}

// OkWithData
// @description: success with data
// @receiver h
// @param data
func (h HttpResponse) OkWithData(data any) {
	h.Context.JSON(http.StatusOK, gin.H{
		"code":    http.StatusOK,
		"message": "success",
		"data":    data,
	})
}

// Paginate
// @description: success page data
// @receiver h
// @param data
// @param total
// @param current
// @param size
func (h HttpResponse) Paginate(data any, total int64, current, size int64) {
	// 处理一下页码、页数量
	if current == -1 {
		current = 1
		size = total
	}
	// 计算总页码
	totalPage := utils.Paginate().Generate(total, int(size))
	// 返回结果
	h.Context.JSON(http.StatusOK, map[string]any{
		"code":    http.StatusOK,
		"data":    &PageData[any]{Current: int(current), Size: int(size), Total: total, TotalPage: totalPage, Records: data},
		"message": "success",
	})
}

// AuthorizationFailed
// @description: authorization failed
// @receiver h
// @param msg
func (h HttpResponse) AuthorizationFailed(msg string) {
	if msg == "" {
		msg = "authorized failed"
	}
	h.Context.JSON(http.StatusUnauthorized, gin.H{
		"code":    http.StatusUnauthorized,
		"message": msg,
	})
}

// Failed
// @description: request bad
// @receiver h
func (h HttpResponse) Failed() {
	h.Context.JSON(http.StatusBadRequest, gin.H{
		"code":    http.StatusBadRequest,
		"message": "failed",
	})
}

// FailedWithError
// @description: custom error
// @receiver h
// @param err
func (h HttpResponse) FailedWithError(err any) {
	var errStr string
	switch err.(type) {
	case error:
		errStr = err.(error).Error()
	case string:
		errStr = err.(string)
	}

	h.Context.JSON(http.StatusBadRequest, gin.H{
		"code":    http.StatusBadRequest,
		"message": errStr,
	})
}

// Validator
// @description: request param error
// @receiver h
// @param err
func (h HttpResponse) Validator(err error) {
	h.Context.JSON(http.StatusBadRequest, gin.H{
		"code":    http.StatusBadRequest,
		"message": component.Validate().Error(err),
	})
}

// Internal
// @description: server error
// @receiver h
func (h HttpResponse) Internal() {
	h.Context.JSON(http.StatusInternalServerError, gin.H{
		"code":    http.StatusInternalServerError,
		"message": "server error",
	})
}