Make simple actions parsing work

server/util.go

@@ -1,6 +1,10 @@
 package server
 
 import (
+	"encoding/json"
+	"fmt"
+	"github.com/pkg/errors"
+	"heckel.io/ntfy/util"
 	"net/http"
 	"strings"
 )
@@ -40,3 +44,73 @@ func readQueryParam(r *http.Request, names ...string) string {
 	}
 	return ""
 }
+
+func parseActions(s string) (actions []*action, err error) {
+	s = strings.TrimSpace(s)
+	if strings.HasPrefix(s, "[") {
+		actions, err = parseActionsFromJSON(s)
+	} else {
+		actions, err = parseActionsFromSimple(s)
+	}
+	if err != nil {
+		return nil, err
+	}
+	for i := range actions {
+		actions[i].ID = util.RandomString(actionIDLength)
+		if !util.InStringList([]string{"view", "broadcast", "http"}, actions[i].Action) {
+			return nil, fmt.Errorf("cannot parse actions: action '%s' unknown", actions[i].Action)
+		} else if actions[i].Label == "" {
+			return nil, fmt.Errorf("cannot parse actions: label must be set")
+		}
+	}
+	return actions, nil
+}
+
+func parseActionsFromJSON(s string) ([]*action, error) {
+	actions := make([]*action, 0)
+	if err := json.Unmarshal([]byte(s), &actions); err != nil {
+		return nil, err
+	}
+	return actions, nil
+}
+
+func parseActionsFromSimple(s string) ([]*action, error) {
+	actions := make([]*action, 0)
+	rawActions := util.SplitNoEmpty(s, ";")
+	for _, rawAction := range rawActions {
+		newAction := &action{}
+		parts := util.SplitNoEmpty(rawAction, ",")
+		if len(parts) < 3 {
+			return nil, fmt.Errorf("cannot parse action: action requires at least keys 'action', 'label' and one parameter: %s", rawAction)
+		}
+		for i, part := range parts {
+			key, value := util.SplitKV(part, "=")
+			if key == "" && i == 0 {
+				newAction.Action = value
+			} else if key == "" && i == 1 {
+				newAction.Label = value
+			} else if key == "" && i == 2 {
+				newAction.URL = value // This works, because both "http" and "view" need a URL
+			} else if key != "" {
+				switch strings.ToLower(key) {
+				case "action":
+					newAction.Action = value
+				case "label":
+					newAction.Label = value
+				case "url":
+					newAction.URL = value
+				case "method":
+					newAction.Method = value
+				case "body":
+					newAction.Body = value
+				default:
+					return nil, errors.Errorf("cannot parse action: key '%s' not supported, please use JSON format instead", part)
+				}
+			} else {
+				return nil, errors.Errorf("cannot parse action: unknown phrase '%s'", part)
+			}
+		}
+		actions = append(actions, newAction)
+	}
+	return actions, nil
+}