/
user_handler.go
227 lines (193 loc) · 5.83 KB
/
user_handler.go
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package http
import (
"context"
"encoding/json"
"net/http"
"strconv"
"github.com/gorilla/sessions"
"github.com/labstack/echo"
"github.com/learngolangwithpalakala/mygoproject/admin/user"
"github.com/learngolangwithpalakala/mygoproject/models"
"github.com/sirupsen/logrus"
validator "gopkg.in/go-playground/validator.v9"
)
var store = sessions.NewCookieStore([]byte("secret"))
// ResponseError represent the reseponse error struct
type ResponseError struct {
Message string `json:"message"`
}
type LoginResponse struct {
Status string `json:"status"`
ErrorCode string `json:"errorCode"`
Description string `json:"description"`
SessionKey string `json:"sessionKey"`
Role models.Role `json:"role"`
Email string `json:"email"`
EmpId string `json:"empId"`
FirstName string `json:"firstName"`
LastName string `json:"lastName"`
Position string `json:"position"`
Timestamp string `json:"timestamp"`
}
// UserHandler represent the httphandler for article
type UserHandler struct {
Userusecase user.Usecase
}
// NewUserHandler will initialize the users/ resources endpoint
func NewUserHandler(e *echo.Echo, us user.Usecase) {
handler := &UserHandler{
Userusecase: us,
}
e.GET("/user", handler.FetchUsers)
e.POST("/user", handler.Store)
e.PUT("/user", handler.Update)
e.GET("/user/:id", handler.GetByEmpNumber)
e.DELETE("/user/:id", handler.Delete)
e.POST("/login", handler.DoLogin)
}
// Store will store the user by given request body
func (a *UserHandler) Store(c echo.Context) error {
var user models.User
err := c.Bind(&user)
if err != nil {
return c.JSON(http.StatusUnprocessableEntity, err.Error())
}
if ok, err := isRequestValid(&user); !ok {
return c.JSON(http.StatusBadRequest, err.Error())
}
ctx := c.Request().Context()
if ctx == nil {
ctx = context.Background()
}
err = a.Userusecase.Store(ctx, &user)
if err != nil {
return c.JSON(getStatusCode(err), ResponseError{Message: err.Error()})
}
return c.JSON(http.StatusCreated, user)
}
//Update
func (a *UserHandler) Update(c echo.Context) error {
var user models.User
err := c.Bind(&user)
if err != nil {
return c.JSON(http.StatusUnprocessableEntity, err.Error())
}
if ok, err := isRequestValid(&user); !ok {
return c.JSON(http.StatusBadRequest, err.Error())
}
ctx := c.Request().Context()
if ctx == nil {
ctx = context.Background()
}
err = a.Userusecase.Update(ctx, &user)
if err != nil {
return c.JSON(getStatusCode(err), ResponseError{Message: err.Error()})
}
return c.JSON(http.StatusCreated, user)
}
// Delete will delete user by given param
func (a *UserHandler) Delete(c echo.Context) error {
idP, err := strconv.Atoi(c.Param("id"))
if err != nil {
return c.JSON(http.StatusNotFound, models.ErrNotFound.Error())
}
id := strconv.Itoa(idP)
ctx := c.Request().Context()
if ctx == nil {
ctx = context.Background()
}
err = a.Userusecase.Delete(ctx, id)
if err != nil {
return c.JSON(getStatusCode(err), ResponseError{Message: err.Error()})
}
return c.NoContent(http.StatusNoContent)
}
// GetByEmpNumber will get user by given emp number
func (a *UserHandler) GetByEmpNumber(c echo.Context) error {
idP, err := strconv.Atoi(c.Param("id"))
if err != nil {
return c.JSON(http.StatusNotFound, models.ErrNotFound.Error())
}
id := strconv.Itoa(idP)
ctx := c.Request().Context()
if ctx == nil {
ctx = context.Background()
}
user, err := a.Userusecase.GetByEmpNumber(ctx, id)
if err != nil {
return c.JSON(getStatusCode(err), ResponseError{Message: err.Error()})
}
return c.JSON(http.StatusOK, user)
}
func isRequestValid(m *models.User) (bool, error) {
validate := validator.New()
err := validate.Struct(m)
if err != nil {
return false, err
}
return true, nil
}
func getStatusCode(err error) int {
if err == nil {
return http.StatusOK
}
logrus.Error(err)
switch err {
case models.ErrInternalServerError:
return http.StatusInternalServerError
case models.ErrNotFound:
return http.StatusNotFound
case models.ErrConflict:
return http.StatusConflict
default:
return http.StatusInternalServerError
}
}
// FetchUsers will fetch the users based on given params
func (a *UserHandler) FetchUsers(c echo.Context) error {
ctx := c.Request().Context()
if ctx == nil {
ctx = context.Background()
}
listUsrs, err := a.Userusecase.Fetch(ctx)
if err != nil {
return c.JSON(getStatusCode(err), ResponseError{Message: err.Error()})
}
return c.JSON(http.StatusOK, listUsrs)
}
func (a *UserHandler) DoLogin(c echo.Context) error {
var user models.User
err := c.Bind(&user)
if err != nil {
return c.JSON(http.StatusUnprocessableEntity, err.Error())
}
if ok, err := isRequestValid(&user); !ok {
return c.JSON(http.StatusBadRequest, err.Error())
}
ctx := c.Request().Context()
if ctx == nil {
ctx = context.Background()
}
user, err = a.Userusecase.Login(ctx, user)
if err != nil {
return c.JSON(getStatusCode(err), ResponseError{Message: err.Error()})
}
session, err := store.Get(c.Request(), "session-name")
if err != nil {
http.Error(c.Response(), err.Error(), http.StatusInternalServerError)
return err
}
// Set some session values.
session.Values["foo"] = "bar"
// Save it before we write to the response/return from the handler.
err = session.Save(c.Request(), c.Response())
if err != nil {
http.Error(c.Response(), err.Error(), http.StatusInternalServerError)
return err
}
response := &LoginResponse{Status: http.StatusText(200), ErrorCode: "", Description: "", SessionKey: session.ID, Role: models.Role{ID: 3, Role: "ADMIN"}, Email: user.WorkEmail, EmpId: user.EmpNumber,
FirstName: user.FirstName, LastName: user.LastName, Position: user.Position}
c.Response().Header().Set(echo.HeaderContentType, echo.MIMEApplicationJSONCharsetUTF8)
c.Response().WriteHeader(http.StatusOK)
return json.NewEncoder(c.Response()).Encode(response)
}