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post.go
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post.go
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package handler
import (
"net/http"
"github.com/dgrijalva/jwt-go"
"github.com/l3njo/yap/model"
uuid "github.com/satori/go.uuid"
"github.com/labstack/echo/v4"
)
// PostResponse is a response containing one Post
type PostResponse struct {
Response
model.Post `json:"data"`
}
// PublishPost handles the "/posts/:id/publish" route.
func PublishPost(c echo.Context) error {
userToken := c.Get("user").(*jwt.Token)
claims := userToken.Claims.(*JwtCustomClaims)
resp, status := PostResponse{}, 0
id := uuid.FromStringOrNil(c.Param("id"))
if uuid.Equal(id, uuid.Nil) {
status = http.StatusBadRequest
resp.Message = http.StatusText(status)
return c.JSON(status, resp)
}
if !RBAC.IsGranted(string(claims.Role), permissionPostOps, nil) {
status = http.StatusForbidden
resp.Message = http.StatusText(status)
return c.JSON(status, resp)
}
post, status, err := model.GetPost(id)
if err != nil {
resp.Message = http.StatusText(status)
return c.JSON(status, resp)
}
status, err = post.Publish()
if err != nil {
resp.Message = http.StatusText(status)
return c.JSON(status, resp)
}
resp.Status, resp.Message, resp.Post = true, http.StatusText(status), post
return c.JSON(status, resp)
}
// RetractPost handles the "/posts/:id/retract" route.
func RetractPost(c echo.Context) error {
userToken := c.Get("user").(*jwt.Token)
claims := userToken.Claims.(*JwtCustomClaims)
resp, status := PostResponse{}, 0
id := uuid.FromStringOrNil(c.Param("id"))
if uuid.Equal(id, uuid.Nil) {
status = http.StatusBadRequest
resp.Message = http.StatusText(status)
return c.JSON(status, resp)
}
if !RBAC.IsGranted(string(claims.Role), permissionPostOps, nil) {
status = http.StatusForbidden
resp.Message = http.StatusText(status)
return c.JSON(status, resp)
}
post, status, err := model.GetPost(id)
if err != nil {
resp.Message = http.StatusText(status)
return c.JSON(status, resp)
}
status, err = post.Retract()
if err != nil {
resp.Message = http.StatusText(status)
return c.JSON(status, resp)
}
resp.Status, resp.Message, resp.Post = true, http.StatusText(status), post
return c.JSON(status, resp)
}
// DeletePost handles the "/posts/:id/delete" route.
func DeletePost(c echo.Context) error {
userToken := c.Get("user").(*jwt.Token)
claims := userToken.Claims.(*JwtCustomClaims)
resp, status := PostResponse{}, 0
id := uuid.FromStringOrNil(c.Param("id"))
if uuid.Equal(id, uuid.Nil) {
status = http.StatusBadRequest
resp.Message = http.StatusText(status)
return c.JSON(status, resp)
}
post, status, err := model.GetPost(id)
if err != nil {
resp.Message = http.StatusText(status)
return c.JSON(status, resp)
}
if status = checkDeletePermissions(post, claims.Role); status != http.StatusOK {
resp.Message = http.StatusText(status)
return c.JSON(status, resp)
}
status, err = post.Delete()
if err != nil {
resp.Message = http.StatusText(status)
return c.JSON(status, resp)
}
resp.Status, resp.Message = true, http.StatusText(status)
return c.JSON(status, resp)
}
// HACK to (temporarily) fix cyclomatic complexity.
func checkDeletePermissions(post model.Post, role model.UserRole) int {
switch v := post.(type) {
case *model.Article:
if (!v.Release && !RBAC.IsGranted(string(role), permissionDraftOps, nil)) ||
(v.Release && !RBAC.IsGranted(string(role), permissionPostOps, nil)) {
return http.StatusForbidden
}
case *model.Gallery:
if (!v.Release && !RBAC.IsGranted(string(role), permissionDraftOps, nil)) ||
(v.Release && !RBAC.IsGranted(string(role), permissionPostOps, nil)) {
return http.StatusForbidden
}
case *model.Flicker:
if (!v.Release && !RBAC.IsGranted(string(role), permissionDraftOps, nil)) ||
(v.Release && !RBAC.IsGranted(string(role), permissionPostOps, nil)) {
return http.StatusForbidden
}
default:
return http.StatusInternalServerError
}
return http.StatusOK
}