#!/usr/bin/env python
# -*- coding:utf-8 -*-
# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

import collections
import io
import logging
import sys

# import our centrally initialized portage instance
from repoman._portage import portage

portage._internal_caller = True
portage._disable_legacy_globals()


from portage import os
import portage.checksum
import portage.const
import portage.repository.config
from portage.output import create_color_func, nocolor
from portage.output import ConsoleStyleFile, StyleWriter
from portage.util import formatter
from portage.util.futures.extendedfutures import (
    ExtendedFuture,
)

# pylint: disable=ungrouped-imports
from repoman.actions import Actions
from repoman.argparser import parse_args
from repoman.qa_data import QAData
from repoman.qa_data import format_qa_output, format_qa_output_column
from repoman.repos import RepoSettings
from repoman.scanner import Scanner
from repoman import utilities
from repoman.modules.vcs.settings import VCSSettings
from repoman import VERSION


bad = create_color_func("BAD")

# A sane umask is needed for files that portage creates.
os.umask(0o22)

LOGLEVEL = logging.WARNING
portage.util.initialize_logger(LOGLEVEL)

VALID_VERSIONS = [
    1,
]

_repoman_main_vars = collections.namedtuple(
    "_repoman_main_vars",
    (
        "can_force",
        "exitcode",
        "options",
        "qadata",
        "repo_settings",
        "scanner",
        "vcs_settings",
    ),
)


def repoman_main(argv):
    repoman_vars = _repoman_init(argv)
    if repoman_vars.exitcode is not None:
        return repoman_vars.exitcode
    result = _repoman_scan(*repoman_vars)
    return _handle_result(*repoman_vars, result)


def _repoman_init(argv):
    config_root = os.environ.get("PORTAGE_CONFIGROOT")
    repoman_settings = portage.config(config_root=config_root, local_config=False)
    repoman_settings.valid_versions = VALID_VERSIONS

    if (
        repoman_settings.get("NOCOLOR", "").lower() in ("yes", "true")
        or repoman_settings.get("TERM") == "dumb"
        or not sys.stdout.isatty()
    ):
        nocolor()

    options, arguments = parse_args(
        argv, repoman_settings.get("REPOMAN_DEFAULT_OPTS", "")
    )

    if options.version:
        print("Repoman", VERSION, "(portage-%s)" % portage.VERSION)
        return _repoman_main_vars(None, 0, None, None, None, None, None)

    logger = logging.getLogger()

    if options.verbosity > 0:
        logger.setLevel(LOGLEVEL - 10 * options.verbosity)
    else:
        logger.setLevel(LOGLEVEL)

    # Set this to False when an extraordinary issue (generally
    # something other than a QA issue) makes it impossible to
    # commit (like if Manifest generation fails).
    can_force = ExtendedFuture(True)
    repo_settings, vcs_settings, scanner, qadata = _create_scanner(
        options, can_force, config_root, repoman_settings
    )
    return _repoman_main_vars(
        can_force, None, options, qadata, repo_settings, scanner, vcs_settings
    )


def _create_scanner(options, can_force, config_root, repoman_settings):

    portdir, portdir_overlay, mydir = utilities.FindPortdir(repoman_settings)
    if portdir is None:
        return (None, None, None, None)

    myreporoot = os.path.basename(portdir_overlay)
    myreporoot += mydir[len(portdir_overlay) :]

    # avoid a circular parameter repo_settings
    vcs_settings = VCSSettings(options, repoman_settings)
    qadata = QAData()

    logging.debug("repoman_main: RepoSettings init")
    repo_settings = RepoSettings(
        config_root,
        portdir,
        portdir_overlay,
        repoman_settings,
        vcs_settings,
        options,
        qadata,
    )
    repoman_settings = repo_settings.repoman_settings
    repoman_settings.valid_versions = VALID_VERSIONS

    # Now set repo_settings
    vcs_settings.repo_settings = repo_settings
    # set QATracker qacats, qawarnings
    vcs_settings.qatracker.qacats = repo_settings.qadata.qacats
    vcs_settings.qatracker.qawarnings = repo_settings.qadata.qawarnings
    logging.debug("repoman_main: vcs_settings done")
    logging.debug("repoman_main: qadata: %s", repo_settings.qadata)

    if "digest" in repoman_settings.features and options.digest != "n":
        options.digest = "y"

    logging.debug("vcs: %s" % (vcs_settings.vcs,))
    logging.debug("repo config: %s" % (repo_settings.repo_config,))
    logging.debug("options: %s" % (options,))

    # It's confusing if these warnings are displayed without the user
    # being told which profile they come from, so disable them.
    env = os.environ.copy()
    env["FEATURES"] = env.get("FEATURES", "") + " -unknown-features-warn"

    # Perform the main checks
    scanner = Scanner(
        repo_settings, myreporoot, config_root, options, vcs_settings, mydir, env
    )
    return repo_settings, vcs_settings, scanner, qadata


def _repoman_scan(
    can_force, exitcode, options, qadata, repo_settings, scanner, vcs_settings
):
    scanner.scan_pkgs(can_force)

    if options.if_modified == "y" and len(scanner.effective_scanlist) < 1:
        logging.warning(
            "--if-modified is enabled, but no modified packages were found!"
        )

    result = {
        # fail will be true if we have failed in at least one non-warning category
        "fail": 0,
        # warn will be true if we tripped any warnings
        "warn": 0,
        # full will be true if we should print a "repoman full" informational message
        "full": options.mode != "full",
    }

    for x in qadata.qacats:
        if x not in vcs_settings.qatracker.fails:
            continue
        result["warn"] = 1
        if x not in qadata.qawarnings:
            result["fail"] = 1

    if result["fail"] or (
        result["warn"] and not (options.quiet or options.mode == "scan")
    ):
        result["full"] = 0

    return result


def _handle_result(
    can_force, exitcode, options, qadata, repo_settings, scanner, vcs_settings, result
):
    commitmessage = None
    if options.commitmsg:
        commitmessage = options.commitmsg
    elif options.commitmsgfile:
        # we don't need the actual text of the commit message here
        # the filename will do for the next code block
        commitmessage = options.commitmsgfile

    # Save QA output so that it can be conveniently displayed
    # in $EDITOR while the user creates a commit message.
    # Otherwise, the user would not be able to see this output
    # once the editor has taken over the screen.
    qa_output = io.StringIO()
    style_file = ConsoleStyleFile(sys.stdout)
    if options.mode == "commit" and (not commitmessage or not commitmessage.strip()):
        style_file.write_listener = qa_output
    console_writer = StyleWriter(file=style_file, maxcol=9999)
    console_writer.style_listener = style_file.new_styles

    f = formatter.AbstractFormatter(console_writer)

    format_outputs = {"column": format_qa_output_column, "default": format_qa_output}

    format_output = format_outputs.get(options.output_style, format_outputs["default"])
    format_output(
        f,
        vcs_settings.qatracker.fails,
        result["full"],
        result["fail"],
        options,
        qadata.qawarnings,
    )

    style_file.flush()
    del console_writer, f, style_file

    # early out for manifest generation
    if options.mode == "manifest":
        return 1 if result["fail"] else 0

    qa_output = qa_output.getvalue()
    qa_output = qa_output.splitlines(True)

    # output the results
    actions = Actions(repo_settings, options, scanner, vcs_settings)
    if actions.inform(can_force.get(), result):
        # perform any other actions
        actions.perform(qa_output)
    elif result["fail"]:
        return 1

    return 0