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Adding API for adding/replacing links.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| package api | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "fmt" | ||
| "net/http" | ||
|
|
||
| "github.com/gorilla/mux" | ||
| "github.com/mattermost/mattermost-plugin-autolink/server/link" | ||
| ) | ||
|
|
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| const PluginIDContextValue = "pluginid" | ||
|
|
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| type LinkStore interface { | ||
| GetLinks() []link.Link | ||
| SaveLinks([]link.Link) error | ||
| } | ||
|
|
||
| type Authorization interface { | ||
| IsAuthorizedAdmin(userID string) (bool, error) | ||
| } | ||
|
|
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| type Handler struct { | ||
| root *mux.Router | ||
| linkStore LinkStore | ||
| authorization Authorization | ||
| } | ||
|
|
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| func NewHandler(linkStore LinkStore, authorization Authorization) *Handler { | ||
| h := &Handler{ | ||
| linkStore: linkStore, | ||
| authorization: authorization, | ||
| } | ||
|
|
||
| root := mux.NewRouter() | ||
| api := root.PathPrefix("/api/v1").Subrouter() | ||
| api.Use(h.adminOrPluginRequired) | ||
| api.HandleFunc("/link", h.setLink).Methods("POST") | ||
|
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| api.Handle("{anything:.*}", http.NotFoundHandler()) | ||
|
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| h.root = root | ||
|
|
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| return h | ||
| } | ||
|
|
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| func (h *Handler) handleError(w http.ResponseWriter, err error) { | ||
| w.WriteHeader(http.StatusInternalServerError) | ||
| b, _ := json.Marshal(struct { | ||
| Error string `json:"error"` | ||
| Details string `json:"details"` | ||
| }{ | ||
| Error: "An internal error has occurred. Check app server logs for details.", | ||
| Details: err.Error(), | ||
| }) | ||
| _, _ = w.Write(b) | ||
| } | ||
|
|
||
| func (h *Handler) handleErrorWithCode(w http.ResponseWriter, code int, errTitle string, err error) { | ||
| w.WriteHeader(code) | ||
| b, _ := json.Marshal(struct { | ||
| Error string `json:"error"` | ||
| Details string `json:"details"` | ||
| }{ | ||
| Error: errTitle, | ||
| Details: err.Error(), | ||
| }) | ||
| _, _ = w.Write(b) | ||
| } | ||
|
|
||
| func (h *Handler) adminOrPluginRequired(next http.Handler) http.Handler { | ||
| return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { | ||
| userID := r.Header.Get("Mattermost-User-ID") | ||
| if userID != "" { | ||
| authorized, err := h.authorization.IsAuthorizedAdmin(userID) | ||
| if err != nil { | ||
| http.Error(w, "Not authorized", http.StatusUnauthorized) | ||
| return | ||
| } | ||
| if authorized { | ||
| next.ServeHTTP(w, r) | ||
| return | ||
| } | ||
| } | ||
|
|
||
| ifPluginId := r.Context().Value(PluginIDContextValue) | ||
| pluginId, ok := ifPluginId.(string) | ||
| if ok && pluginId != "" { | ||
| next.ServeHTTP(w, r) | ||
| return | ||
| } | ||
|
|
||
| http.Error(w, "Not authorized", http.StatusUnauthorized) | ||
| }) | ||
| } | ||
|
|
||
| func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request, fromPluginID string) { | ||
| h.root.ServeHTTP(w, r.WithContext(context.WithValue(r.Context(), PluginIDContextValue, fromPluginID))) | ||
| } | ||
|
|
||
| func (h *Handler) setLink(w http.ResponseWriter, r *http.Request) { | ||
| var newLink link.Link | ||
| if err := json.NewDecoder(r.Body).Decode(&newLink); err != nil { | ||
| h.handleError(w, fmt.Errorf("Unable to decode body: %w", err)) | ||
| return | ||
| } | ||
|
|
||
| links := h.linkStore.GetLinks() | ||
| found := false | ||
| for i := range links { | ||
| if links[i].Name == newLink.Name || links[i].Pattern == newLink.Pattern { | ||
| links[i] = newLink | ||
| found = true | ||
| break | ||
| } | ||
| } | ||
| if !found { | ||
| links = append(h.linkStore.GetLinks(), newLink) | ||
| } | ||
|
|
||
| if err := h.linkStore.SaveLinks(links); err != nil { | ||
| h.handleError(w, fmt.Errorf("Unable to save link: %w", err)) | ||
| return | ||
| } | ||
|
|
||
| w.WriteHeader(http.StatusOK) | ||
| _, _ = w.Write([]byte(`{"status": "OK"}`)) | ||
| } |
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