spaceapi-ccc-de/backend/eva-backend.go
2019-04-03 22:29:12 +02:00

132 lines
2.7 KiB
Go

package main
import (
"github.com/gofrs/uuid"
"github.com/robfig/cron"
"net/http"
"encoding/json"
"gopkg.in/yaml.v2"
"log"
"io/ioutil"
"os"
"time"
"github.com/gorilla/mux"
)
var config = ConfigFile{}
func main() {
data, _ := ioutil.ReadFile("config.yaml")
err := yaml.Unmarshal(data, &config)
if err != nil {
panic("Can't load config")
}
config.SharedSecret = os.Getenv("SHARED_SECRET")
c := cron.New()
err = c.AddFunc("@hourly", func() {
loadSpaceData()
getCalendars()
})
if err != nil {
log.Printf("Can't start cron %v", err)
} else {
c.Start()
}
router := NewRouter()
http.Handle("/", router)
log.Fatal(http.ListenAndServe(":8080", router))
}
func getJson(url string, target interface{}) error {
r, err := http.Get(url)
if err != nil {
return err
}
defer r.Body.Close()
return json.NewDecoder(r.Body).Decode(target)
}
func SpaceDataIndex(w http.ResponseWriter, r *http.Request) {
ReturnJson(w, readSpacedata())
}
func SpaceUrlIndex(w http.ResponseWriter, r *http.Request) {
ReturnJson(w, readSpaceurl())
}
func CalendarIndex(w http.ResponseWriter, r *http.Request) {
ReturnJson(w, readCalendar())
}
func SpaceUrlAdd(w http.ResponseWriter, r *http.Request) {
spaceUrl := SpaceUrl{}
createEntry(&spaceUrl, w, r)
spaceUrl.Validated = false
generatedUuid, err := uuid.NewV4()
if err != nil {
log.Printf("%v", err)
w.WriteHeader(500)
} else {
spaceUrl.Id = generatedUuid.String()
writeSpaceurl(spaceUrl)
}
}
func SpaceUrlUpdate(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
SharedSecret := vars["SharedSecret"]
if SharedSecret == config.SharedSecret {
spaceUrl := SpaceUrl{}
createEntry(&spaceUrl, w, r)
updateSpaceurl(spaceUrl)
}
}
func SpaceUrlDelete(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
SharedSecret := vars["SharedSecret"]
Id := vars["id"]
if SharedSecret == config.SharedSecret {
err := deleteSpaceurl(Id)
if err != nil {
w.WriteHeader(500)
} else {
w.WriteHeader(204)
}
} else {
w.WriteHeader(401)
}
}
func loadSpaceData() {
spaceUrls := readSpaceurl()
timestamp := time.Now().Unix()
for _, spaceUrl := range spaceUrls {
if spaceUrl.Validated && int64(spaceUrl.LastUpdated + 60) < timestamp {
spaceData := SpaceData{}
err := getJson(spaceUrl.Url, &spaceData)
if err != nil {
log.Println(spaceUrl.Url)
log.Println(err)
} else {
writeSpaceData(spaceData)
spaceUrl.LastUpdated = timestamp
updateSpaceurl(spaceUrl)
}
}
}
}
func refreshData(w http.ResponseWriter, r *http.Request) {
loadSpaceData()
getCalendars()
w.WriteHeader(204)
}