Adding python code for generating data model xml .gni file (#36437)

* Adding python code for granating data model xml .gni file

* Fixed python code and remove buildable

* Update src/python_testing/matter_testing_infrastructure/generate_data_model_xmls_gni.py

Co-authored-by: Andrei Litvin <andy314@gmail.com>

* Update src/python_testing/matter_testing_infrastructure/generate_data_model_xmls_gni.py

Co-authored-by: Andrei Litvin <andy314@gmail.com>

* Update src/python_testing/matter_testing_infrastructure/generate_data_model_xmls_gni.py

Co-authored-by: Andrei Litvin <andy314@gmail.com>

* Fixed mismatches and typo from suggestion commits

* Fixed file configuraton to figure out the right directory, so this can be run from anywhere

* Restyled by autopep8

* Restyled by isort

* Update src/python_testing/matter_testing_infrastructure/generate_data_model_xmls_gni.py

---------

Co-authored-by: Andrei Litvin <andy314@gmail.com>
Co-authored-by: Restyled.io <commits@restyled.io>

Author: 3 people

src/python_testing/matter_testing_infrastructure/generate_data_model_xmls_gni.py

@@ -0,0 +1,112 @@
+# Copyright (c) 2024 Project CHIP Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+Generates a gni file containing all data_model files (generally XML and JSON files) 
+that are typically used by matter_testing_infrastructure.
+
+These files are to be bundled with whl packages of the matter_testing_infrastructure
+so that methods requiring data model files work just by installing the python
+package without requiring a full chip SDK checkout.
+"""
+import os
+
+import jinja2
+
+# Set chip_root to be dynamically based on the script's location
+chip_root = os.path.abspath(os.path.join(os.path.dirname(__file__), "../../.."))
+
+# Directories to search for .xml and .json files relative to chip_root
+directories = [
+    os.path.join(chip_root, "data_model/1.3/clusters/"),
+    os.path.join(chip_root, "data_model/1.3/device_types/"),
+    os.path.join(chip_root, "data_model/1.4/clusters/"),
+    os.path.join(chip_root, "data_model/1.4/device_types/"),
+    os.path.join(chip_root, "data_model/master/clusters/"),
+    os.path.join(chip_root, "data_model/master/device_types/"),
+]
+
+# Template for generating the GNI file content with proper indentation
+GNI_TEMPLATE = """\
+# Copyright (c) 2024 Project CHIP Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import("//build_overrides/chip.gni")
+
+data_model_XMLS = [
+{% for name in file_list %}
+    "{{ name }}",
+{% endfor %}
+]
+"""
+
+# Function to find and collect all .xml and .json files
+
+
+def get_data_model_file_names():
+    file_list = []
+    for directory in directories:
+        for root, _, files in os.walk(directory):
+            for file in files:
+                if file.endswith(".xml") or file.endswith(".json"):
+                    # Replace absolute path with `${chip_root}` for GNI compatibility
+                    relative_path = os.path.join("${chip_root}", os.path.relpath(root, chip_root), file)
+                    file_list.append(relative_path)
+    # Sort files alphabetically
+    file_list.sort()
+    return file_list
+
+# Main function to generate the data_model_xmls.gni file
+
+
+def generate_gni_file():
+    # Step 1: Find all files and create the sorted file list
+    file_list = get_data_model_file_names()
+
+    # Step 2: Render the template with the file list
+    environment = jinja2.Environment(trim_blocks=True, lstrip_blocks=True)
+    template = environment.from_string(GNI_TEMPLATE)
+    output_content = template.render(file_list=file_list)
+
+    # Step 3: Dynamically generate the output file path
+    # Get the script's directory (where this script is located)
+    script_dir = os.path.dirname(os.path.realpath(__file__))  # Directory of the current script
+
+    # Step 4: Ensure we are in the correct `src/python_testing/` directory
+    base_dir = os.path.abspath(os.path.join(script_dir, "../.."))  # Go up two levels to src/python_testing/
+    # Now append `matter_testing_infrastructure`
+    output_dir = os.path.join(base_dir, "python_testing", "matter_testing_infrastructure")
+    output_file = os.path.join(output_dir, "data_model_xmls.gni")
+
+    # Step 5: Write the rendered content to the output file
+    os.makedirs(output_dir, exist_ok=True)  # Ensure the output directory exists
+    with open(output_file, "wt") as f:
+        f.write(output_content)
+    print(f"{output_file} has been generated successfully.")
+
+
+# Run the function to generate the .gni file
+if __name__ == "__main__":
+    generate_gni_file()