warehost/system/api.go

package system

import (
	"encoding/json"
	"net/http"

	"github.com/astaxie/session"
	"github.com/go-xorm/xorm"
	"github.com/julienschmidt/httprouter"

	libconfig "dev.sum7.de/sum7/warehost/config"
	libapi "dev.sum7.de/sum7/warehost/lib/api"
	log "dev.sum7.de/sum7/warehost/lib/log"
	libpassword "dev.sum7.de/sum7/warehost/lib/password"
)

//MODULNAME to get global name for the modul
const MODULNAME = "system"

//API keep data in module global
type API struct {
	config       *libconfig.Config
	sessions     *session.Manager
	dbconnection *xorm.Engine
	log          *log.ModulLog
}

// NewAPI sets the routes to the api functions
func NewAPI(config *libconfig.Config, sessions *session.Manager, dbconnection *xorm.Engine, router *httprouter.Router, prefix string) {
	api := &API{
		config:       config,
		sessions:     sessions,
		dbconnection: dbconnection,
		log:          log.NewModulLog(MODULNAME),
	}
	router.GET(prefix+"/status", libapi.SessionHandler(api.Status, sessions))
	router.POST(prefix+"/login", libapi.SessionHandler(api.Login, sessions))
	router.GET(prefix+"/logout", libapi.LoginHandler(api.Logout, sessions))
	router.POST(prefix+"/password", libapi.LoginHandler(api.Password, sessions))
	router.GET(prefix+"/delete", libapi.LoginHandler(api.Status, sessions))
}

// Status to get Login and Server status
func (api *API) Status(w http.ResponseWriter, r *http.Request, _ httprouter.Params, sess session.Session) (returndata interface{}, returnerr *libapi.ErrorResult) {
	returndata = false
	logger := api.log.GetLog(r, "status")
	result, err := api.dbconnection.Count(new(Login))
	if err != nil {
		returnerr = &libapi.ErrorResult{Message: "Affe"}
		logger.Error("get login count: ", err)
	} else {
		if result > 0 {
			returndata = true
		}
	}
	logger.Info("status")
	return
}

// Logout current user
func (api *API) Logout(w http.ResponseWriter, r *http.Request, _ httprouter.Params, sess session.Session) (returndata interface{}, returnerr *libapi.ErrorResult) {
	api.sessions.SessionDestroy(w, r)
	logger := api.log.GetLog(r, "logout")
	if login := sess.Get("login"); login != nil {
		logger = logger.WithField("user", login.(Login).Username)
	}
	sess.Delete("login")
	sess.Delete("profil")
	logger.Info("logout")
	returndata = true
	return
}

// Login of system
func (api *API) Login(w http.ResponseWriter, r *http.Request, _ httprouter.Params, sess session.Session) (returndata interface{}, returnerr *libapi.ErrorResult) {
	logger := api.log.GetLog(r, "login")
	var requestlogin RequestLogin
	err := json.NewDecoder(r.Body).Decode(&requestlogin)
	if err != nil {
		logger.Error("fetch request")
		http.Error(w, err.Error(), http.StatusInternalServerError)
		returndata = false
		return
	}
	logger = logger.WithField("user", requestlogin.Username)
	var login = Login{Username: requestlogin.Username}
	_, err = api.dbconnection.Get(&login)
	if err != nil {
		logger.Error("fetch database")
		returndata = false
		return
	}
	if login.Id <= 0 {
		logger.Warn("user not found")
		returndata = false
		return
	}
	returndata = false
	if login.Active {
		output, _ := libpassword.Validate(login.Password, requestlogin.Password)
		if output {
			returndata = true
			sess.Set("login", login)
			logger.Info("logged in")
		} else {
			logger.Warn("wrong password")
		}
	} else {
		logger.Warn("not active")
	}

	return
}
func (api *API) Password(w http.ResponseWriter, r *http.Request, _ httprouter.Params, sess session.Session) (returndata interface{}, returnerr *libapi.ErrorResult) {
	logger := api.log.GetLog(r, "password")
	logger.Warn("not implemented")
	returndata = false
	return
}
func (api *API) Delete(w http.ResponseWriter, r *http.Request, _ httprouter.Params, sess session.Session) (returndata interface{}, returnerr *libapi.ErrorResult) {
	logger := api.log.GetLog(r, "delete")
	logger.Warn("not implemented")
	returndata = false
	return
}