Template Tag Function Editor (#67)

![CleanShot 2024-08-15 at 16 53
09@2x](https://github.com/user-attachments/assets/8c0eb655-1daf-4dc8-811f-f606c770f7dc)

src-tauri/src/lib.rs

@@ -35,7 +35,7 @@ use crate::export_resources::{get_workspace_export_resources, WorkspaceExportRes
 use crate::grpc::metadata_to_map;
 use crate::http_request::send_http_request;
 use crate::notifications::YaakNotifier;
-use crate::render::{render_request, variables_from_environment};
+use crate::render::{render_request, render_template, variables_from_environment};
 use crate::updates::{UpdateMode, YaakUpdater};
 use crate::window_menu::app_menu;
 use yaak_models::models::{
@@ -60,6 +60,7 @@ use yaak_plugin_runtime::events::{
     GetHttpRequestByIdResponse, InternalEvent, InternalEventPayload, RenderHttpRequestResponse,
     SendHttpRequestResponse,
 };
+use yaak_templates::{parse_and_render, Parser, Tokens};
 
 mod analytics;
 mod export_resources;
@@ -99,6 +100,38 @@ async fn cmd_metadata(app_handle: AppHandle) -> Result<AppMetaData, ()> {
     })
 }
 
+#[tauri::command]
+async fn cmd_parse_template(template: &str) -> Result<Tokens, String> {
+    Ok(Parser::new(template).parse())
+}
+
+#[tauri::command]
+async fn cmd_template_tokens_to_string(tokens: Tokens) -> Result<String, String> {
+    Ok(tokens.to_string())
+}
+
+#[tauri::command]
+async fn cmd_render_template(
+    window: WebviewWindow,
+    template: &str,
+    workspace_id: &str,
+    environment_id: Option<&str>,
+) -> Result<String, String> {
+    let environment = match environment_id {
+        Some(id) => Some(
+            get_environment(&window, id)
+                .await
+                .map_err(|e| e.to_string())?,
+        ),
+        None => None,
+    };
+    let workspace = get_workspace(&window, &workspace_id)
+        .await
+        .map_err(|e| e.to_string())?;
+    let rendered = render_template(template, &workspace, environment.as_ref());
+    Ok(rendered)
+}
+
 #[tauri::command]
 async fn cmd_dismiss_notification(
     window: WebviewWindow,
@@ -1641,6 +1674,9 @@ pub fn run() {
             cmd_delete_http_response,
             cmd_delete_workspace,
             cmd_dismiss_notification,
+            cmd_parse_template,
+            cmd_template_tokens_to_string,
+            cmd_render_template,
             cmd_duplicate_grpc_request,
             cmd_duplicate_http_request,
             cmd_export_data,

src-tauri/src/render.rs

@@ -1,10 +1,15 @@
-use std::collections::HashMap;
-use serde_json::Value;
 use crate::template_fns::timestamp;
-use yaak_templates::parse_and_render;
+use serde_json::Value;
+use std::collections::HashMap;
 use yaak_models::models::{
     Environment, EnvironmentVariable, HttpRequest, HttpRequestHeader, HttpUrlParameter, Workspace,
 };
+use yaak_templates::parse_and_render;
+
+pub fn render_template(template: &str, w: &Workspace, e: Option<&Environment>) -> String {
+    let vars = &variables_from_environment(w, e);
+    render(template, vars)
+}
 
 pub fn render_request(r: &HttpRequest, w: &Workspace, e: Option<&Environment>) -> HttpRequest {
     let r = r.clone();