Multiple fixes and added article get endpoint for authors

api/article.go

@@ -12,21 +12,75 @@ import (
 	"net/http"
 	"net/url"
 	"path"
+	"strconv"
 	"strings"
 	"time"
 )
 
 func Article(w http.ResponseWriter, r *http.Request) {
 	switch r.Method {
-	case http.MethodGet:
-		assetsGet(w, r)
 	case http.MethodPost:
-		assetsPost(w, r)
+		articlePost(w, r)
 	case http.MethodDelete:
-		assetsDelete(w, r)
+		articleDelete(w, r)
+	case http.MethodPatch:
+		articlePatch(w, r)
 	}
 }
 
+type getResponse struct {
+	Title   string   `json:"title"`
+	Summary string   `json:"summary"`
+	Authors []int    `json:"authors"`
+	Image   string   `json:"image"`
+	Tags    []string `json:"tags"`
+	Link    string   `json:"link"`
+	Content string   `json:"content"`
+}
+
+func articleGet(w http.ResponseWriter, r *http.Request) {
+	authorId, ok := authorizedSession(r)
+	if !ok {
+		w.WriteHeader(http.StatusUnauthorized)
+		return
+	}
+
+	rawId := r.URL.Query().Get("id")
+
+	if rawId == "" {
+		ApiError{Message: "no id was given", Code: http.StatusBadRequest}.Send(w)
+		return
+	}
+	id, err := strconv.Atoi(rawId)
+	if err != nil {
+		ApiError{"invalid 'id' parameter", http.StatusUnprocessableEntity}.Send(w)
+		return
+	}
+
+	if !database.Exists(database.GetDB().Table("article_author"), "author_id=?", authorId) {
+		w.WriteHeader(http.StatusUnauthorized)
+		return
+	}
+
+	var article database.Article
+	if database.GetDB().Table("article").First(&article, id).RowsAffected == 0 {
+		ApiError{Message: "no such id", Code: http.StatusNotFound}.Send(w)
+		return
+	}
+
+	resp := getResponse{
+		Title:   article.Title,
+		Summary: article.Summary,
+		Image:   article.Image,
+		Link:    article.Link,
+		Content: base64.StdEncoding.EncodeToString([]byte(article.Markdown)),
+	}
+	database.GetDB().Table("article_author").Select("author_id").Where("article_id", article.Id).Find(&resp.Authors)
+	database.GetDB().Table("article_tag").Select("tag").Where("article_id", article.Id).Find(&resp.Tags)
+
+	json.NewEncoder(w).Encode(resp)
+}
+
 type uploadPayload struct {
 	Title   string   `json:"title"`
 	Summary string   `json:"summary"`
@@ -102,7 +156,7 @@ func articlePost(w http.ResponseWriter, r *http.Request) {
 	} else {
 		articleSummary.Tags = []string{}
 	}
-	articleSummary.Link = path.Join(config.Path, "article", url.PathEscape(articleSummary.Link))
+	articleSummary.Link = path.Join("/", config.SubPath, "article", url.PathEscape(articleSummary.Link))
 
 	w.WriteHeader(http.StatusCreated)
 	json.NewEncoder(w).Encode(articleSummary)
@@ -216,7 +270,7 @@ func articlePatch(w http.ResponseWriter, r *http.Request) {
 	} else {
 		articleSummary.Tags = []string{}
 	}
-	articleSummary.Link = path.Join(config.Path, "article", url.PathEscape(articleSummary.Link))
+	articleSummary.Link = path.Join("/", config.SubPath, "article", url.PathEscape(articleSummary.Link))
 
 	w.WriteHeader(http.StatusOK)
 	json.NewEncoder(w).Encode(articleSummary)