#!/usr/bin/python

from __future__ import (absolute_import, division, print_function)
__metaclass__ = type

import os
import sys
import tempfile

from collections import namedtuple

from ansible.module_utils.basic import AnsibleModule

try:
    from rpmfluff import SimpleRpmBuild
    from rpmfluff import YumRepoBuild
except ImportError:
    from rpmfluff.rpmbuild import SimpleRpmBuild
    from rpmfluff.yumrepobuild import YumRepoBuild

try:
    from rpmfluff import can_use_rpm_weak_deps
except ImportError:
    try:
        from rpmfluff.utils import can_use_rpm_weak_deps
    except ImportError:
        can_use_rpm_weak_deps = None

RPM = namedtuple('RPM', ['name', 'version', 'release', 'epoch', 'recommends'])


SPECS = [
    RPM('dinginessentail', '1.0', '1', None, None),
    RPM('dinginessentail', '1.0', '2', '1', None),
    RPM('dinginessentail', '1.1', '1', '1', None),
    RPM('dinginessentail-olive', '1.0', '1', None, None),
    RPM('dinginessentail-olive', '1.1', '1', None, None),
    RPM('landsidescalping', '1.0', '1', None, None),
    RPM('landsidescalping', '1.1', '1', None, None),
    RPM('dinginessentail-with-weak-dep', '1.0', '1', None, ['dinginessentail-weak-dep']),
    RPM('dinginessentail-weak-dep', '1.0', '1', None, None),
]


def create_repo(arch='x86_64'):
    pkgs = []
    for spec in SPECS:
        pkg = SimpleRpmBuild(spec.name, spec.version, spec.release, [arch])
        pkg.epoch = spec.epoch

        if spec.recommends:
            # Skip packages that require weak deps but an older version of RPM is being used
            if not can_use_rpm_weak_deps or not can_use_rpm_weak_deps():
                continue

            for recommend in spec.recommends:
                pkg.add_recommends(recommend)

        pkgs.append(pkg)

    repo = YumRepoBuild(pkgs)
    repo.make(arch)

    for pkg in pkgs:
        pkg.clean()

    return repo.repoDir


def main():
    module = AnsibleModule(
        argument_spec={
            'arch': {'required': True},
            'tempdir': {'type': 'path'},
        }
    )

    arch = module.params['arch']
    tempdir = module.params['tempdir']

    # Save current temp dir so we can set it back later
    original_tempdir = tempfile.tempdir
    tempfile.tempdir = tempdir

    try:
        repo_dir = create_repo(arch)
    finally:
        tempfile.tempdir = original_tempdir

    module.exit_json(repo_dir=repo_dir, tmpfile=tempfile.gettempdir())


if __name__ == "__main__":
    main()