More slash commands (#5858)

Co-authored-by: Douwe Osinga <douwe@squareup.com>

crates/goose/src/recipe/build_recipe/mod.rs

@@ -77,6 +77,41 @@ where
     Ok(recipe)
 }
 
+pub fn build_recipe_from_template_with_positional_params<F>(
+    recipe_content: String,
+    recipe_dir: &Path,
+    params: Vec<String>,
+    user_prompt_fn: Option<F>,
+) -> Result<Recipe, RecipeError>
+where
+    F: Fn(&str, &str) -> Result<String, anyhow::Error>,
+{
+    let recipe_dir_str = recipe_dir.display().to_string();
+
+    let recipe_parameters =
+        validate_recipe_template_from_content(&recipe_content, Some(recipe_dir_str.clone()))
+            .map_err(|source| RecipeError::TemplateRendering { source })?
+            .parameters;
+
+    let param_pairs: Vec<(String, String)> = if let Some(recipe_params) = &recipe_parameters {
+        if params.len() < recipe_params.len() {
+            let param_keys: Vec<String> = recipe_params.iter().map(|p| p.key.clone()).collect();
+            return Err(RecipeError::MissingParams {
+                parameters: param_keys,
+            });
+        }
+        recipe_params
+            .iter()
+            .zip(params.iter())
+            .map(|(rp, p)| (rp.key.clone(), p.clone()))
+            .collect()
+    } else {
+        vec![]
+    };
+
+    build_recipe_from_template(recipe_content, recipe_dir, param_pairs, user_prompt_fn)
+}
+
 pub fn apply_values_to_parameters<F>(
     user_params: &[(String, String)],
     recipe_parameters: Option<Vec<RecipeParameter>>,