depends_on_stage2

#!/usr/bin/env python3

"Stage2: extract dependencies of the main changeset and call stage3."

import json
import os
import re
import sys
from urllib.request import Request, urlopen

from depends_on.common import extract_depends_on


def load_depends_on(from_dir):
    "Load the data from the depends-on.json file"

    fname = os.path.join(from_dir, "depends-on.json")

    with open(fname, "r", encoding="UTF-8") as json_stream:
        return json.load(json_stream)


def main(check_mode):
    "Main function."

    # get the current directory
    main_dir = os.getcwd()

    data = load_depends_on(main_dir)

    if "description" not in data:
        print("No description found.", file=sys.stderr)
        return 0

    depends_on = re.findall(
        r"^Depends-On: (.*)", data["description"], re.IGNORECASE | re.MULTILINE
    )

    if len(depends_on) == 0:
        print("No Depends-On found.", file=sys.stderr)
        return 0

    print(f"depends_on: {depends_on}", file=sys.stderr)

    # go to the top dir (above main_dir)
    os.chdir(os.path.join(main_dir, ".."))

    nb_unmerged_pr = 0
    for depends_on_url in depends_on:
        merged, _ = extract_depends_on(depends_on_url.strip(), check_mode)
        if not merged:
            nb_unmerged_pr += 1

    print(f"{nb_unmerged_pr} unmerged PR", file=sys.stderr)

    if check_mode:
        return 1 if nb_unmerged_pr > 0 else 0

    if nb_unmerged_pr == 0:
        print("No unmerged PR found.", file=sys.stderr)
        return 0

    # extract the Main-Dir: <dir> string if any from the description
    main_dir_res = re.findall(
        r"^Main-Dir: (.*)", data["description"], re.IGNORECASE | re.MULTILINE
    )

    if len(main_dir_res) > 0:
        main_dir = main_dir_res[-1].strip()

    print(f"+ chdir {main_dir}", file=sys.stderr)
    os.chdir(main_dir)

    stage3 = os.path.join(os.path.dirname(__file__), "depends_on_stage3")
    print(f"+ {stage3}", file=sys.stderr)
    os.execl(stage3, "depends_on_stage3")


if __name__ == "__main__":
    sys.exit(main(sys.argv[1] == "true"))

# stage2.py ends here