#!/usr/bin/python2 -O
# -*- coding: utf-8 -*-
"""

    @author: Fabio Erculiani <lxnay@sabayon.org>
    @contact: lxnay@sabayon.org
    @copyright: Fabio Erculiani
    @license: GPL-2

    B{Entropy Package Manager Server Wrapper Tool}.

"""
import os
import sys
import subprocess
sys.path.insert(0, '../libraries')
sys.path.insert(1, '../client')
sys.path.insert(2, '../server')
sys.path.insert(3, '/usr/lib/entropy/client')
sys.path.insert(4, '/usr/lib/entropy/libraries')
sys.path.insert(5, '/usr/lib/entropy/server')

from entropy.i18n import _
import entropy.tools
from text_tools import print_menu
from entropy.output import print_error, print_info, print_warning, \
    purple, teal
from entropy.const import etpConst, etpUi

REAGENT_EXEC = "/usr/sbin/reagent"
ACTIVATOR_EXEC = "/usr/sbin/activator"

help_opts = [
    None,
    (0, " ~ eit ~ ", 1,
        'Entropy Server Commands Wrapper - (C) %s' % (
            entropy.tools.get_year(),) ),
    None,
    (0, _('Options'), 0, None),
    None,
    (1, 'add <packages>', 3, _('commit to current repository only the provided packages')),
    (1, 'checkout <repository>', 2, _('switch from a repository to another')),
    (1, 'commit [<repository>]', 2, _('commit changes to repository')),
    (1, 'cp <from> <to> <packages>', 1, _('copy packages from a repository to another')),
    (1, 'deps <packages>', 3, _('edit package dependencies')),
    (1, 'fit <package files>', 2, _('inject package files into the current repository')),
    (1, 'log [<repository>]', 2, _('show log for repository')),
    (1, 'mv <from> <to> <packages>', 1, _('move packages from a repository to another')),
    (1, 'push [<repository>]', 2, _('push committed packages remotely')),
    (1, 'repo', 4, _('show current repository')),
    (1, 'rm <packages>', 3, _('remove packages from current repository')),
    (1, 'search <package deps>', 2, _('search for privided package dependencies')),
    (1, 'show <package deps>', 2, _('show matches for privided package dependencies')),
    (1, 'status [<repository>]', 2, _('show current repositories status')),
    None,
]

# TODO:
# - reset repository to remote status ? => reset
# - branch repository ? => branch
# - diff?
# - interactive commit?
# - create a new repo
# - search for a tag
# - search for a file (belongs)
# - print graph and revgraph
# - bump a repo (bump)
# - mask, unmask
# - libtest, deptest, pkgtest
# - cleanup (clean)

options = sys.argv[1:]

# print help
if not options or ("--help" in options) or ("-h" in options):
    print_menu(help_opts)
    if len(options) < 1:
        print_error("not enough parameters")
        raise SystemExit(1)
    raise SystemExit(0)

def _exec_args(args):
    os.execvpe(args[0], args, os.environ)

def get_entropy_server(quiet = False):
    if quiet:
        etpUi['quiet'] = True
    from entropy.server.interfaces import Server
    return Server(community_repo = etpConst['community']['mode'])

main_cmd = options.pop(0)

if main_cmd == "status":
    if options:
        os.environ['ETP_REPO'] = options.pop(0)
    _exec_args([REAGENT_EXEC, "status"] + options)

elif main_cmd == "add" and options:
    _exec_args([REAGENT_EXEC, "update", "--atoms"] + options)

elif (main_cmd == "checkout") and options and len(options) < 2:
    repository_id = options.pop(0)
    _exec_args((REAGENT_EXEC, "repo", "default", repository_id))

elif main_cmd == "commit":
    if options:
        os.environ['ETP_REPO'] = options.pop(0)
    _exec_args([REAGENT_EXEC, "update"] + options)

elif main_cmd == "fit" and options:
    _exec_args([REAGENT_EXEC, "inject"] + options)

elif main_cmd == "push":
    if options:
        os.environ['ETP_REPO'] = options.pop(0)
    _exec_args([ACTIVATOR_EXEC, "sync"] + options)

elif main_cmd == "show" and options:
    _exec_args([REAGENT_EXEC, "query", "match"] + options)

elif main_cmd == "search" and options:
    _exec_args([REAGENT_EXEC, "query", "search"] + options)

elif main_cmd == "mv" and len(options) > 2:
    from_repo = options.pop(0)
    to_repo = options.pop(0)
    _exec_args([REAGENT_EXEC, "repo", "move", from_repo, to_repo] + options)

elif main_cmd == "cp" and len(options) > 2:
    from_repo = options.pop(0)
    to_repo = options.pop(0)
    _exec_args([REAGENT_EXEC, "repo", "copy", from_repo, to_repo] + options)

elif main_cmd == "deps" and options:
    server = None
    repository_id = None
    try:
        server = get_entropy_server(quiet = True)
        # get current repository id
        repository_id = server.repository()
    finally:
        if server is not None:
            server.shutdown()

    _exec_args([REAGENT_EXEC, "repo", "package-dep", repository_id] + options)

elif main_cmd == "rm" and options:
    _exec_args([REAGENT_EXEC, "repo", "remove"] + options)

elif main_cmd == "repo":
    server = None
    try:
        server = get_entropy_server(quiet = True)
        repository_id = server.repository()
        repository_ids = server.repositories()
        for repo_id in sorted(repository_ids):
            if repo_id == repository_id:
                print_warning(purple(repo_id) + " *")
            else:
                print_info(teal(repo_id))
        raise SystemExit(0)
    finally:
        if server is not None:
            server.shutdown()

elif main_cmd == "log":
    if options:
        os.environ['ETP_REPO'] = options.pop(0)

    server = None
    try:
        server = get_entropy_server()
        changelog_path = server._get_local_repository_compressed_changelog_file(
            server.repository())
        if os.path.isfile(changelog_path) and os.access(changelog_path, os.R_OK):
            proc = subprocess.Popen(
                "/bin/bzcat \"%s\" | ${PAGER:-/usr/bin/less}" % (
                    changelog_path,), shell = True)
            raise SystemExit(proc.wait())
        else:
            print_error("log is not available")
            raise SystemExit(1)
    finally:
        if server is not None:
            server.shutdown()

else:
    print_menu(help_opts)
    raise SystemExit(1)