package api

import (
	"fmt"
	"net/http"
	"reflect"
	"strconv"
	"time"

	"github.com/gin-gonic/gin"
	"gopkg.in/go-playground/validator.v8"
)

// 处理跨域请求,支持options访问
func Cors() gin.HandlerFunc {
	return func(c *gin.Context) {
		method := c.Request.Method
		c.Header("Access-Control-Allow-Origin", "*")
		c.Header("Access-Control-Allow-Headers", "*") //Content-Type,AccessToken,X-CSRF-Token,Authorization,Token,FZM-APP-ID
		c.Header("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, PATCH, DELETE")
		c.Header("Access-Control-Expose-Headers", "Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers, Content-Type")
		c.Header("Access-Control-Allow-Credentials", "true")

		// 放行所有OPTIONS方法，因为有的模板是要请求两次的
		if method == "OPTIONS" {
			c.AbortWithStatus(http.StatusNoContent)
		}

		// 处理请求
		c.Next()
	}
}

// defaultLogFormatter is the default log format function Logger middleware uses.
var Chat33GinLogFormatter = func(param gin.LogFormatterParams) string {
	var statusColor, methodColor, resetColor string
	if param.IsOutputColor() {
		statusColor = param.StatusCodeColor()
		methodColor = param.MethodColor()
		resetColor = param.ResetColor()
	}

	if param.Latency > time.Minute {
		// Truncate in a golang < 1.8 safe way
		param.Latency = param.Latency - param.Latency%time.Second
	}
	return fmt.Sprintf("[GIN] %v |%s %3d %s| %13v | %15s |%s %-7s %s %s\n%s",
		param.TimeStamp.Format("2006/01/02 - 15:04:05"),
		statusColor, param.StatusCode, resetColor,
		param.Latency,
		param.ClientIP,
		methodColor, param.Method, resetColor,
		param.Path,
		//param.Keys[DeviceType], param.Keys[Version], param.Keys[AppId], param.Keys[UserId], param.Keys[Uuid],
		param.ErrorMessage,
	)
}

func CheckNumber(
	v *validator.Validate, topStruct reflect.Value, currentStructOrField reflect.Value,
	field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string,
) bool {
	val := field.Interface()

	switch val.(type) {
	case int:
		return true
	case string:
		if val.(string) == "" {
			return true
		}
		_, err := strconv.ParseInt(val.(string), 10, 64)
		if err != nil {
			return false
		}
		return true
	case int64:
		return true
	default:
		//utility_log.Error("func ToInt error unknow type")
		return false
	}
}