#!/usr/bin/python3

import json
import os
import subprocess
import sys


def main(tree, options):
    repos = options["repos"]
    packages = options["packages"]
    releasever = options["releasever"]
    operation = options.get("operation", "install")
    verbosity = options.get("verbosity", "info")

    with open("/tmp/dnf.conf", "w") as conf:
        for repoid, repo in repos.items():
            conf.write(f"[{repoid}]\n")
            for key, value in repo.items():
                if type(value) == str:
                    s = value
                elif type(value) == list:
                    s = " ".join(value)
                elif type(value) == bool:
                    s = "1" if value else "0"
                elif type(value) == int:
                    s = str(value)
                else:
                    print(f"unkown type for `{key}`: {value} ({type(value)})")
                    return 1
                conf.write(f"{key}={s}\n")

    script = f"""
        set -e
        mkdir -p {tree}/dev {tree}/sys {tree}/proc
        mount -t devtmpfs none {tree}/dev
        mount -t sysfs none {tree}/sys
        mount -t proc none {tree}/proc
    """
    returncode = subprocess.run(["/bin/sh", "-c", script]).returncode

    if returncode != 0:
        print(f"setting up API VFS in target tree failed: {returncode}")
        return returncode

    cmd = [
        "dnf", "-yv",
        "--installroot", tree,
        "--setopt", "reposdir=",
        "--setopt", "install_weak_deps=False",
        "--releasever", releasever,
        "--rpmverbosity", verbosity,
        "--config", "/tmp/dnf.conf",
        operation
    ] + packages

    print(" ".join(cmd), flush=True)
    return subprocess.run(cmd).returncode


if __name__ == '__main__':
    args = json.load(sys.stdin)
    r = main(args["tree"], args["options"])
    sys.exit(r)