Refactor devcontainer setup and enhance content fetching with template rendering

.devcontainer/devcontainer.json

@@ -1,16 +1,13 @@
 {
-	"name": "Struct devcontainer",
-  "image": "mcr.microsoft.com/devcontainers/python:1-3.12-bullseye",
-	"features": {
-    "ghcr.io/devcontainers/features/python:1": {
-      "version": "3.12"
-    },
+  "name": "Struct devcontainer",
+  "image": "mcr.microsoft.com/devcontainers/python:3",
+  "features": {
+    "ghcr.io/devcontainers/features/python:1": {},
     "ghcr.io/gvatsal60/dev-container-features/pre-commit": {},
-    "ghcr.io/eitsupi/devcontainer-features/go-task:latest": {},
-    "ghcr.io/devcontainers-extra/features/shfmt:1" : {}
-	},
-	"postCreateCommand": "bash ./scripts/devcontainer_start.sh",
-	"customizations": {
+    "ghcr.io/eitsupi/devcontainer-features/go-task:latest": {}
+  },
+  "postCreateCommand": "bash ./scripts/devcontainer_start.sh",
+  "customizations": {
     "vscode": {
       "extensions": [
         "ms-python.python",

scripts/devcontainer_start.sh

@@ -1,3 +1,3 @@
-pip3.12 install -r requirements.txt
-pip3.12 install -r requirements.dev.txt
-pip3.12 install -e .
+pip install -r requirements.txt
+pip install -r requirements.dev.txt
+pip install -e .

struct_module/file_item.py

@@ -100,8 +100,18 @@ def fetch_content(self):
       if self.content_location:
         self.logger.debug(f"Fetching content from: {self.content_location}")
         try:
-          self.content = self.content_fetcher.fetch_content(self.content_location)
-          self.logger.debug(f"Fetched content: {self.content}")
+          raw_content = self.content_fetcher.fetch_content(
+              self.content_location)
+          self.logger.debug(f"Fetched content: {raw_content}")
+          # Render the fetched content using the template renderer
+          template_vars = self._merge_default_template_vars(
+              self.config_variables)
+          missing_vars = self.template_renderer.prompt_for_missing_vars(
+              raw_content, template_vars)
+          template_vars.update(missing_vars)
+          self.content = self.template_renderer.render_template(
+              raw_content, template_vars)
+          self.logger.debug(f"Rendered content: {self.content}")
         except Exception as e:
           self.logger.error(f"❗ Failed to fetch content from {self.content_location}: {e}")
 

tests/test_file_item.py

@@ -22,3 +22,37 @@ def test_fetch_content(file_item):
         mock_fetch.return_value = "fetched content"
         file_item.fetch_content()
         assert file_item.content == "file content"
+
+
+def test_fetch_content_renders_template(monkeypatch):
+    properties = {
+        "name": "test.txt",
+        "file": "/fake/path.txt",
+        "config_variables": [],
+        "input_store": "/tmp/input.json"
+    }
+    file_item = FileItem(properties)
+
+    # Mock fetch_content to return a template string
+    monkeypatch.setattr(
+        file_item.content_fetcher,
+        "fetch_content",
+        lambda location: "Hello, {{@ name @}}!"
+    )
+    # Mock template renderer methods
+    rendered = {}
+
+    def fake_prompt_for_missing_vars(content, vars):
+        return {"name": "World"}
+
+    def fake_render_template(content, vars):
+        rendered["content"] = content
+        rendered["vars"] = vars
+        return "Hello, World!"
+    file_item.template_renderer.prompt_for_missing_vars = fake_prompt_for_missing_vars
+    file_item.template_renderer.render_template = fake_render_template
+
+    file_item.fetch_content()
+    assert file_item.content == "Hello, World!"
+    assert rendered["content"] == "Hello, {{@ name @}}!"
+    assert rendered["vars"]["name"] == "World"