package utils

import (
	"log"
	"reflect"

	"github.com/authorizerdev/authorizer/server/db"
	"github.com/authorizerdev/authorizer/server/db/models"
	"github.com/gin-gonic/gin"
)

// StringSliceContains checks if a string slice contains a particular string
func StringSliceContains(s []string, e string) bool {
	for _, a := range s {
		if a == e {
			return true
		}
	}
	return false
}

// SaveSessionInDB saves sessions generated for a given user with meta information
// Do not store token here as that could be security breach
func SaveSessionInDB(c *gin.Context, userId string) {
	sessionData := models.Session{
		UserID:    userId,
		UserAgent: GetUserAgent(c.Request),
		IP:        GetIP(c.Request),
	}

	err := db.Provider.AddSession(sessionData)
	if err != nil {
		log.Println("=> error saving session in db:", err)
	} else {
		log.Println("=> session saved in db:", sessionData)
	}
}

// RemoveDuplicateString removes duplicate strings from a string slice
func RemoveDuplicateString(strSlice []string) []string {
	allKeys := make(map[string]bool)
	list := []string{}
	for _, item := range strSlice {
		if _, value := allKeys[item]; !value {
			allKeys[item] = true
			list = append(list, item)
		}
	}
	return list
}

// ConvertInterfaceToSlice to convert interface to slice interface
func ConvertInterfaceToSlice(slice interface{}) []interface{} {
	s := reflect.ValueOf(slice)
	if s.Kind() != reflect.Slice {
		return nil
	}

	// Keep the distinction between nil and empty slice input
	if s.IsNil() {
		return nil
	}

	ret := make([]interface{}, s.Len())

	for i := 0; i < s.Len(); i++ {
		ret[i] = s.Index(i).Interface()
	}

	return ret
}