#!/usr/bin/python3
#
# Copyright (c) 2007 - 2009 Canonical Ltd.
# Author: Martin Pitt <martin.pitt@ubuntu.com>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.  See http://www.gnu.org/copyleft/gpl.html for
# the full text of the license.

"""Collect information about a package installation/upgrade failure."""

import argparse
import contextlib
import os
import sys

import apport
import apport.fileutils


def mkattrname(path):
    """Convert a file path to a problem report attribute name."""

    name = ""
    for directory in path.split(os.sep):
        if not directory:
            continue
        name += "".join(
            [c for c in directory[0].upper() + directory[1:] if c.isalnum()]
        )
    return name


def parse_args():
    """Parse command line options and return arguments."""
    parser = argparse.ArgumentParser()
    parser.add_argument(
        "-p",
        "--package",
        required=True,
        help="Specify the package name which failed to upgrade (mandatory)",
    )
    parser.add_argument(
        "-l",
        "--log",
        action="append",
        dest="logs",
        help="Append given log file, or, if it is a directory,"
        " all files in it (can be specified multiple times)",
    )
    parser.add_argument(
        "-t",
        "--tags",
        help="Add the following tags to the bug report (comma separated)",
    )
    args = parser.parse_args()
    if args.tags:
        args.tags = args.tags.split(",")
    return args


# pylint: disable-next=missing-function-docstring
def main():
    # parse command line arguments
    options = parse_args()

    # create report
    report = apport.Report("Package")
    report.add_package(options.package)
    # get_source can fail on distribution upgrades where the package in question has
    # been removed from the newer release. See https://launchpad.net/bugs/2078695
    with contextlib.suppress(ValueError):
        report["SourcePackage"] = apport.packaging.get_source(options.package)
    report["ErrorMessage"] = (sys.stdin, False)

    if options.tags:
        report.add_tags(options.tags)

    for line in options.logs or []:
        if os.path.isfile(line):
            report[mkattrname(line)] = (line,)
        elif os.path.isdir(line):
            for log_file in os.listdir(line):
                path = os.path.join(line, log_file)
                if os.path.isfile(path):
                    report[mkattrname(path)] = (path,)

    # write report
    try:
        with apport.fileutils.make_report_file(report) as report_file:
            report.write(report_file)
    except OSError as error:
        apport.fatal("Cannot create report: %s", str(error))


if __name__ == "__main__":
    main()