feat: add msglib message source metadata

internal/msglib/sidecar_client.go

@@ -87,6 +87,16 @@ type DisplaySource struct {
 	PresentColumns  []string `json:"present_columns"`
 }
 
+type MessageSource struct {
+	Source          string   `json:"source"`
+	Table           string   `json:"table"`
+	Role            string   `json:"role"`
+	Available       bool     `json:"available"`
+	RequiredColumns []string `json:"required_columns"`
+	PresentColumns  []string `json:"present_columns"`
+	RowCount        string   `json:"row_count"`
+}
+
 type DisplayEntitiesOptions struct {
 	EntityType string
 	Query      string
@@ -139,6 +149,19 @@ func (c *Client) DisplaySources(ctx context.Context) ([]DisplaySource, error) {
 	return out.DisplaySources, nil
 }
 
+func (c *Client) MessageSources(ctx context.Context) ([]MessageSource, error) {
+	args := map[string]any{
+		"sqlite_dll_path": c.config.SQLiteDLLPath,
+		"db_path":         c.config.DBPath,
+		"password":        c.config.Password,
+	}
+	var out messageSourcesData
+	if err := c.call(ctx, "message_sources", args, &out); err != nil {
+		return nil, err
+	}
+	return out.MessageSources, nil
+}
+
 func (c *Client) DisplayEntities(ctx context.Context, opts DisplayEntitiesOptions) ([]DisplayEntity, error) {
 	entityType := strings.TrimSpace(opts.EntityType)
 	if entityType != EntityTypeContacts && entityType != EntityTypeGroups {
@@ -174,6 +197,10 @@ type displaySourcesData struct {
 	DisplaySources []DisplaySource `json:"display_sources"`
 }
 
+type messageSourcesData struct {
+	MessageSources []MessageSource `json:"message_sources"`
+}
+
 type displayEntitiesData struct {
 	Entities []DisplayEntity `json:"entities"`
 }