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user.go
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user.go
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package handlers
import (
"encoding/json"
"net/http"
"github.com/gorilla/mux"
"github.com/iochti/gateway-service/helpers"
usm "github.com/iochti/user-service/models"
pb "github.com/iochti/user-service/proto"
)
// UserHandler handle /user REST requests
type UserHandler struct {
UserSvc pb.UserSvcClient
ContentType string
}
type deletionResponse struct {
ID string `json:"id"`
Deleted bool `json:"deleted"`
}
// HandleGetUser is used on GET:/user and returns a user as JSON
func (u *UserHandler) HandleGetUser(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", u.ContentType)
w.Header().Set("Access-Control-Allow-Origin", "*")
ctx := helpers.GetContext(r)
params := r.URL.Query()
categ := params.Get("categ")
value := params.Get("value")
if categ == "" || value == "" {
http.Error(w, "categ & value params must not be empty", http.StatusBadRequest)
return
}
rsp, err := u.UserSvc.GetUser(ctx, &pb.UserRequest{Categ: categ, Value: value})
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
w.Write(rsp.GetUser())
}
// HandleCreateUser is used on POST:/user and returns the created user as JSON
func (u *UserHandler) HandleCreateUser(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", u.ContentType)
w.Header().Set("Access-Control-Allow-Origin", "*")
ctx := helpers.GetContext(r)
var user usm.User
if err := json.NewDecoder(r.Body).Decode(&user); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
userBytes, err := user.ToByte()
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
rsp, err := u.UserSvc.CreateUser(ctx, &pb.UserMessage{User: userBytes})
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
w.Write(rsp.GetUser())
}
// HandleDeleteUser is used on DELETE:/user/:id and returns the deletion state & deleted id
func (u *UserHandler) HandleDeleteUser(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", u.ContentType)
w.Header().Set("Access-Control-Allow-Origin", "*")
ctx := helpers.GetContext(r)
vars := mux.Vars(r)
id := vars["id"]
if id == "" {
http.Error(w, "Missing id parameter", http.StatusBadRequest)
return
}
rsp, err := u.UserSvc.DeleteUser(ctx, &pb.UserID{Id: id})
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
delResp := deletionResponse{ID: rsp.GetId(), Deleted: rsp.GetDeleted()}
delRespBytes, err := json.Marshal(delResp)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
w.Write(delRespBytes)
}