feat(repositories): add delete by id method code generation

lib/sqlxgentools_cli/src/gen_repositories.rs

@@ -165,6 +165,34 @@ fn gen_update_by_id_method(model: &Model) -> TokenStream {
     }
 }
 
+fn gen_delete_by_id_method(model: &Model) -> TokenStream {
+    let resource_ident = format_ident!("{}", &model.name);
+    let error_msg = format!("Failed to delete resource {:?}", model.name.clone());
+    let primary_key = &model.fields.iter()
+        .find(|f| f.is_primary)
+        .expect("A model must have at least one primary key")
+        .name;
+
+    let func_name_ident = format_ident!("delete_by_{}", primary_key);
+    let query = format!(
+        "DELETE FROM {} WHERE {} = $1",
+        model.table_name,
+        primary_key
+    );
+
+    quote! {
+        pub async fn #func_name_ident(&self, item_id: &str) -> Result<()> {
+            sqlx::query(#query)
+                .bind(item_id)
+                .execute(&self.db.0)
+                .await
+                .context(#error_msg)?;
+
+            Ok(())
+        }
+    }
+}
+
 
 fn generate_repository_file(model: &Model) -> Result<SourceNodeContainer> {
     let resource_name = model.name.clone();
@@ -179,6 +207,7 @@ fn generate_repository_file(model: &Model) -> Result<SourceNodeContainer> {
     let insert_method_code = gen_insert_method(&model);
     let insert_many_method_code = gen_insert_many_method(&model);
     let update_by_id_method_code = gen_update_by_id_method(&model);
+    let delete_by_id_method_code = gen_delete_by_id_method(&model);
 
     // TODO: add import line
 
@@ -207,6 +236,8 @@ fn generate_repository_file(model: &Model) -> Result<SourceNodeContainer> {
             #insert_many_method_code
 
             #update_by_id_method_code
+
+            #delete_by_id_method_code
         }
     };
     // convert TokenStream into rust code as string