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apps.go
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apps.go
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package main
import (
"encoding/json"
"log"
"net/http"
"gopkg.in/mgo.v2/bson"
"github.com/gorilla/mux"
. "meeting/config"
. "meeting/dao"
. "meeting/models"
)
import "time"
var config = Config{}
var dao = MeetingsDAO{}
// GET list all meetings
func AllMeetingsEndPoint(w http.ResponseWriter, r *http.Request) {
meetings, err := dao.FindAll()
if err != nil {
respondWithError(w, http.StatusInternalServerError, err.Error())
return
}
respondWithJson(w, http.StatusOK, meetings)
}
// GET a meeting by its ID
func FindMeetingEndpoint(w http.ResponseWriter, r *http.Request) {
params := mux.Vars(r)
meeting, err := dao.FindById(params["id"])
if err != nil {
respondWithError(w, http.StatusBadRequest, "Invalid meeting ID")
return
}
respondWithJson(w, http.StatusOK, meeting)
}
// GET a meeting by timestamp
func FindMeetingTimeEndpoint(w http.ResponseWriter, r *http.Request) {
params := mux.Vars(r)
meeting, err := dao.FindByTime(params["starttime"],params["endtime"])
if err != nil {
respondWithError(w, http.StatusBadRequest, "Invalid meeting ID")
return
}
respondWithJson(w, http.StatusOK, meeting)
}
// GET a meeting by its email
func FindPatimeetingEndpoint(w http.ResponseWriter, r *http.Request) {
params := mux.Vars(r)
meeting, err := dao.FindByPatimeeting(params["emailid"])
if err != nil {
respondWithError(w, http.StatusBadRequest, "Invalid meeting ID")
return
}
respondWithJson(w, http.StatusOK, meeting)
}
// Create new meetings
func CreateMeetingEndPoint(w http.ResponseWriter, r *http.Request) {
defer r.Body.Close()
var meeting Meeting
if err := json.NewDecoder(r.Body).Decode(&meeting); err != nil {
respondWithError(w, http.StatusBadRequest, "Invalid request payload")
return
}
meeting.ID = bson.NewObjectId()
meeting.Timestamp=time.Now()
if err := dao.Insert(meeting); err != nil {
respondWithError(w, http.StatusInternalServerError, err.Error())
return
}
respondWithJson(w, http.StatusCreated, meeting)
}
func respondWithError(w http.ResponseWriter, code int, msg string) {
respondWithJson(w, code, map[string]string{"error": msg})
}
func respondWithJson(w http.ResponseWriter, code int, payload interface{}) {
response, _ := json.Marshal(payload)
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(code)
w.Write(response)
}
//Eestablish a connection to DB
func init() {
config.Read()
dao.Server = config.Server
dao.Database = config.Database
dao.Connect()
}
// Define HTTP request routes
func main() {
r := mux.NewRouter()
r.HandleFunc("/meetings", AllMeetingsEndPoint).Methods("GET")
r.HandleFunc("/meetings", CreateMeetingEndPoint).Methods("POST")
r.HandleFunc("/meetings/{id}", FindMeetingEndpoint).Methods("GET")
r.HandleFunc("/meetings/start={starttime}&end={endtime}", FindMeetingTimeEndpoint).Methods("GET")
r.HandleFunc("/meetings/?participant={emailid}", FindPatimeetingEndpoint).Methods("GET")
if err := http.ListenAndServe(":3000", r); err != nil {
log.Fatal(err)
}
}