#!/usr/bin/env python3
"""Select affected game targets; docs and release tooling do not trigger game tests."""
import argparse
import json
import subprocess


def affected(paths):
    targets = set()
    for path in paths:
        if path.startswith("src/main/java/") or path in {"build.gradle", "settings.gradle", "gradle.properties"}:
            targets.add("mc1211")
        if path.startswith("ports/mc263/") and not path.endswith(".md"):
            targets.add("mc263")
        if path.startswith(("src/main/resources/", "src/generated/", "buildSrc/", "gradle/")) or path in {"gradlew", "gradlew.bat"}:
            targets.update(("mc1211", "mc263"))
    return sorted(targets)


def main():
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument("--base", required=True)
    args = parser.parse_args()
    paths = subprocess.check_output(["git", "diff", "--name-only", args.base, "HEAD"], text=True).splitlines()
    values = {"mc1211": ("21", "build"), "mc263": ("25", "-p ports/mc263 build")}
    matrix = {"include": [{"target": target, "java": values[target][0], "gradle_args": values[target][1]}
                          for target in affected(paths)]}
    print(json.dumps(matrix, separators=(",", ":")))


if __name__ == "__main__":
    main()