package cnjglobals

import (
	"regexp"

	"github.com/go-playground/validator/v10"
	"github.com/gofiber/fiber/v2"
)

const (
	RequestHeaderXAuthorization = "X-Authorization"

	LenUserId               = 36
	lenUserId               = "36" // Same value as the one above
	LenXAuthorizationHeader = 36   // used for api calls
	lenSessionEncryptionKey = "32"

	minUsername      = "2"
	maxUsername      = "24"
	minAccountName   = "4"
	MinAccountName   = 4 // Same value as the one above
	maxAccountName   = "24"
	MaxAccountName   = 24 // Same value as the one above
	minEmail         = "3"
	maxEmail         = "48"
	minPassword      = "6"
	MinPassword      = 6 // Same value as the one above
	maxPassword      = "64"
	MaxPassword      = 64 // Same value as the one above
	minFcmToken      = "116"
	maxFcmToken      = "164"
	maxAccountStatus = "4" // Indicates the maximum compatible account status. Look for reference in the API
	maxDescription   = "128"
	maxRoomState     = "2" // Look for reference in the API

	accountNameRegex = "^[a-zA-Z0-9_.]+$"
)

var (
	GeneralRules = map[string]string{
		"Username":             "required,min=" + minUsername + ",max=" + maxUsername,
		"AccountName":          "required,min=" + minAccountName + ",max=" + maxAccountName + ",regexp=" + accountNameRegex,
		"Email":                "required,email,min=" + minEmail + ",max=" + maxEmail,
		"Password":             "required", // password length is checked later because it is sent in base64 format
		"UserId":               "required,len=" + lenUserId,
		"SessionEncryptionKey": "required,len=" + lenSessionEncryptionKey,
		"Token":                "required,min=" + minFcmToken + ",max=" + maxFcmToken, // fcm token
		"AccountStatus":        "number,max=" + maxAccountStatus,
		"Description":          "max=" + maxDescription,
		"RoomState":            "number,max=" + maxRoomState,
	}
)

func RegexTag(fl validator.FieldLevel) bool {
	field := fl.Field().String()
	if field == "" {
		return true
	}
	regexString := fl.Param()
	regex := regexp.MustCompile(regexString)
	match := regex.MatchString(field)
	return match
}

func GetAuhorizationToken(c *fiber.Ctx) string {
	return c.GetReqHeaders()[RequestHeaderXAuthorization]
}