feat(webui): add renaming a state path

Closes #9

pkg/webui/statesId.go

@@ -3,6 +3,8 @@ package webui
 import (
 	"html/template"
 	"net/http"
+	"net/url"
+	"path"
 
 	"git.adyxax.org/adyxax/tfstated/pkg/database"
 	"git.adyxax.org/adyxax/tfstated/pkg/model"
@@ -54,3 +56,79 @@ func handleStatesIdGET(db *database.DB) http.Handler {
 		})
 	})
 }
+
+func handleStatesIdPOST(db *database.DB) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if err := r.ParseForm(); err != nil {
+			errorResponse(w, r, http.StatusBadRequest, err)
+			return
+		}
+		action := r.FormValue("action")
+		var stateId uuid.UUID
+		if err := stateId.Parse(r.PathValue("id")); err != nil {
+			errorResponse(w, r, http.StatusBadRequest, err)
+			return
+		}
+		state, err := db.LoadStateById(stateId)
+		if err != nil {
+			errorResponse(w, r, http.StatusInternalServerError, err)
+			return
+		}
+		versions, err := db.LoadVersionsByState(state)
+		if err != nil {
+			errorResponse(w, r, http.StatusInternalServerError, err)
+			return
+		}
+		usernames, err := db.LoadAccountUsernames()
+		if err != nil {
+			errorResponse(w, r, http.StatusInternalServerError, err)
+			return
+		}
+		switch action {
+		case "delete":
+			errorResponse(w, r, http.StatusNotImplemented, err)
+		case "edit":
+			statePath := r.FormValue("path")
+			parsedStatePath, err := url.Parse(statePath)
+			if err != nil || path.Clean(parsedStatePath.Path) != statePath || statePath[0] != '/' {
+				render(w, statesIdTemplate, http.StatusBadRequest, StatesIdPage{
+					Page:      makePage(r, &Page{Title: state.Path, Section: "states"}),
+					Path:      statePath,
+					PathError: true,
+					State:     state,
+					Usernames: usernames,
+					Versions:  versions,
+				})
+				return
+			}
+			state.Path = statePath
+			success, err := db.SaveState(state)
+			if err != nil {
+				errorResponse(w, r, http.StatusInternalServerError, err)
+				return
+			}
+			if !success {
+				render(w, statesIdTemplate, http.StatusBadRequest, StatesIdPage{
+					Page:          makePage(r, &Page{Title: state.Path, Section: "states"}),
+					Path:          statePath,
+					PathDuplicate: true,
+					State:         state,
+					Usernames:     usernames,
+					Versions:      versions,
+				})
+				return
+			}
+			render(w, statesIdTemplate, http.StatusOK, StatesIdPage{
+				Page: makePage(r, &Page{
+					Section: "states",
+					Title:   state.Path,
+				}),
+				State:     state,
+				Usernames: usernames,
+				Versions:  versions,
+			})
+		default:
+			errorResponse(w, r, http.StatusBadRequest, err)
+		}
+	})
+}