package util

import (
	"encoding/base64"
	"net/http"
	"hacklab.nilfm.cc/felt/models"
	"hacklab.nilfm.cc/quartzgun/auth"
	"strings"
)

func GetUserFromToken(req *http.Request) string {
	authHeader := req.Header.Get("Authorization")
	if strings.HasPrefix(authHeader, "Bearer ") {
		authToken := strings.Split(authHeader, "Bearer ")[1]
		data, err := base64.StdEncoding.DecodeString(authToken)
		if err == nil {
			parts := strings.Split(string(data), "\n")
			if len(parts) == 2 {
				return parts[0]
			}
		}
	}
	return ""
}

func GetTablesByUser(user string, udb auth.UserStore) ([]models.TableKey, error) {

	rawTableData, err := udb.GetData(user, "tables")
	if err != nil {
		return []models.TableKey{}, err
	}

	// split rawTableData - tableName,passCode;tableName,passCode;
	tables := strings.Split(rawTableData.(string), ";")
	self := []models.TableKey{}
	for _, t := range tables {
		parts := strings.Split(t, ",")
		if len(parts) == 2 {
			self = append(self, models.TableKey{
				Name:     parts[0],
				Passcode: parts[1],
			})
		}
	}

	return self, nil
}

func SetTablesForUser(user string, tables []models.TableKey, udb auth.UserStore) error {
	rawTableData := ""

	for _, t := range tables {
		rawTableData += t.Name + "," + t.Passcode + ";"
	}
	rawTableData = strings.TrimSuffix(rawTableData, ";")
	return udb.SetData(user, "tables", rawTableData)
}