openwrt/scripts/json_overview_image_info.py

#!/usr/bin/env python3

import json
from pathlib import Path
from os import getenv
from sys import argv

if len(argv) != 2:
    print("JSON info files script requires ouput file as argument")
    exit(1)

output_path = Path(argv[1])

assert getenv("WORK_DIR"), "$WORK_DIR required"

work_dir = Path(getenv("WORK_DIR"))

assert work_dir.is_dir(), "$WORK_DIR not a directory"

output = {}

for json_file in work_dir.glob("*.json"):
    image_info = json.loads(json_file.read_text())
    if not output:
        output.update(image_info)
    else:
        # get first (and only) profile in json file
        device_id = next(iter(image_info["profiles"].keys()))
        if device_id not in output["profiles"]:
            output["profiles"].update(image_info["profiles"])
        else:
            output["profiles"][device_id]["images"].append(
                image_info["profiles"][device_id]["images"][0]
            )

if output:
    output_path.write_text(json.dumps(output, sort_keys=True, separators=(",", ":")))
else:
    print("JSON info file script could not find any JSON files for target")