# ----------------------------------------------------------------------------
# Copyright (c) 2016-2023, QIIME 2 development team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file LICENSE, distributed with this software.
# ----------------------------------------------------------------------------

import click

from q2cli.click.command import ToolCommand, ToolGroupCommand

_COMBO_METAVAR = 'ARTIFACT/VISUALIZATION'


@click.group(help='Utilities for developers and advanced users.',
             cls=ToolGroupCommand)
def dev():
    pass


@dev.command(name='refresh-cache',
             short_help='Refresh CLI cache.',
             help="Refresh the CLI cache. Use this command if you are "
                  "developing a plugin, or q2cli itself, and want your "
                  "changes to take effect in the CLI. A refresh of the cache "
                  "is necessary because package versions do not typically "
                  "change each time an update is made to a package's code. "
                  "Setting the environment variable Q2CLIDEV to any value "
                  "will always refresh the cache when a command is run.",
             cls=ToolCommand)
def refresh_cache():
    import q2cli.core.cache
    q2cli.core.cache.CACHE.refresh()


import_theme_help = \
    ("Allows for customization of q2cli's command line styling based on an "
     "imported .theme (INI formatted) file. If you are unfamiliar with .ini "
     "formatted files look here https://en.wikipedia.org/wiki/INI_file."
     "\n"
     "\n"
     "The .theme file allows you to customize text on the basis of what that "
     "text represents with the following supported text types: command, "
     "option, type, default_arg, required, emphasis, problem, warning, error, "
     "and success. These will be your headers in the '[]' brackets. "
     "\n"
     "\n"
     "`command` refers to the name of the command you issued. `option` refers "
     "to the arguments you give to the command when running it. `type` refers "
     "to the QIIME 2 semantic typing of these arguments (where applicable). "
     "`default_arg` refers to the label next to the argument indicating its "
     "default value (where applicable), and if it is required (where "
     "applicable). `required` refers to any arguments that must be passed to "
     "the command for it to work and gives them special formatting on top of "
     "your normal `option` formatting. `emphasis` refers to any emphasized "
     "pieces of text within help text. `problem` refers to the text informing "
     "you there were issues with the command. `warning` refers to the text "
     "for non-fatal issues while `error` refers to the text for fatal issues."
     "`success` refers to text indicating a process completed as expected."
     "\n"
     "\n"
     "Depending on what your terminal supports, some or all of the following "
     "pieces of the text's formatting may be customized: bold, dim (if true "
     "the text's brightness is reduced), underline, blink, reverse (if true "
     "foreground and background colors are reversed), and finally fg "
     "(foreground color) and bg (background color). The first five may each "
     "be either true or false, while the colors may be set to any of the "
     "following: black, red, green, yellow, blue, magenta, cyan, white, "
     "bright_black, bright_red, bright_green, bright_yellow, bright_blue, "
     "bright_magenta, bright_cyan, or bright_white.")


@dev.command(name='import-theme',
             short_help='Install new command line theme.',
             help=import_theme_help,
             cls=ToolCommand)
@click.option('--theme', required=True,
              type=click.Path(exists=True, file_okay=True,
                              dir_okay=False, readable=True),
              help='Path to file containing new theme info')
def import_theme(theme):
    import os
    import shutil
    from configparser import Error

    import q2cli.util
    from q2cli.core.config import CONFIG

    try:
        CONFIG.parse_file(theme)
    except Error as e:
        # If they tried to change [error] in a valid manner before we hit our
        # parsing error, we don't want to use their imported error settings
        CONFIG.styles = CONFIG.get_default_styles()
        header = 'Something went wrong while parsing your theme: '
        q2cli.util.exit_with_error(e, header=header, traceback=None)
    shutil.copy(theme, os.path.join(q2cli.util.get_app_dir(),
                'cli-colors.theme'))


@dev.command(name='export-default-theme',
             short_help='Export the default settings.',
             help='Create a .theme (INI formatted) file from the default '
             'settings at the specified filepath.',
             cls=ToolCommand)
@click.option('--output-path', required=True,
              type=click.Path(exists=False, file_okay=True,
                              dir_okay=False, readable=True),
              help='Path to output the config to')
def export_default_theme(output_path):
    import configparser
    from q2cli.core.config import CONFIG

    parser = configparser.ConfigParser()
    parser.read_dict(CONFIG.get_default_styles())
    with open(output_path, 'w') as fh:
        parser.write(fh)


def abort_if_false(ctx, param, value):
    if not value:
        ctx.abort()


@dev.command(name='reset-theme',
             short_help='Reset command line theme to default.',
             help="Reset command line theme to default. Requres the '--yes' "
             "parameter to be passed asserting you do want to reset.",
             cls=ToolCommand)
@click.option('--yes', is_flag=True, callback=abort_if_false,
              expose_value=False,
              prompt='Are you sure you want to reset your theme?')
def reset_theme():
    import os
    import q2cli.util

    path = os.path.join(q2cli.util.get_app_dir(), 'cli-colors.theme')
    if os.path.exists(path):
        os.unlink(path)
        click.echo('Theme reset.')
    else:
        click.echo('Theme was already default.')


@dev.command(name='assert-result-type',
             short_help='Assert Result is a specific type.',
             help='Checks that the type of a Result matches an '
                  'expected type. Intended for developer testing.',
             cls=ToolCommand)
@click.argument('input-path', type=click.Path(exists=True, file_okay=True,
                dir_okay=False, readable=True),
                metavar=_COMBO_METAVAR)
@click.option('--qiime-type', required=True,
              help='QIIME 2 data type.')
def assert_result_type(input_path, qiime_type):
    import q2cli.util
    import qiime2.sdk
    from q2cli.core.config import CONFIG

    q2cli.util.get_plugin_manager()
    try:
        result = qiime2.sdk.Result.load(input_path)
    except Exception as e:
        header = 'There was a problem loading %s as a QIIME 2 Result:' % \
            input_path
        q2cli.util.exit_with_error(e, header=header)

    if str(result.type) != qiime_type:
        try:
            msg = 'Expected %s, observed %s' % (qiime_type, result.type)
            raise AssertionError(msg)
        except Exception as e:
            header = 'There was a problem asserting the type:'
            q2cli.util.exit_with_error(e, header=header)
    else:
        msg = 'The input file (%s) type and the expected type (%s)' \
              ' match' % (input_path, qiime_type)
        click.echo(CONFIG.cfg_style('success', msg))


@dev.command(name='assert-result-data',
             short_help='Assert expression in Result.',
             help='Uses regex to check that the provided expression is present'
                  ' in input file. Intended for developer testing.',
             cls=ToolCommand)
@click.argument('input-path', type=click.Path(exists=True, file_okay=True,
                dir_okay=False, readable=True),
                metavar=_COMBO_METAVAR)
@click.option('--zip-data-path', required=True,
              help='The path within the zipped Result\'s data/'
                   ' directory that should be searched.')
@click.option('--expression', required=True,
              help='The Python regular expression to match.')
def assert_result_data(input_path, zip_data_path, expression):
    import re
    import q2cli.util
    import qiime2.sdk
    from q2cli.core.config import CONFIG

    q2cli.util.get_plugin_manager()

    try:
        result = qiime2.sdk.Result.load(input_path)
    except Exception as e:
        header = 'There was a problem loading %s as a QIIME 2 result:' % \
                input_path
        q2cli.util.exit_with_error(e, header=header)

    try:
        hits = sorted(result._archiver.data_dir.glob(zip_data_path))
        if len(hits) != 1:
            data_dir = result._archiver.data_dir
            all_fps = sorted(data_dir.glob('**/*'))
            all_fps = [x.relative_to(data_dir).name for x in all_fps]
            raise ValueError('Value provided for zip_data_path (%s) did not '
                             'produce exactly one match.\nMatches: %s\n'
                             'Paths observed: %s' %
                             (zip_data_path, hits, all_fps))
    except Exception as e:
        header = 'There was a problem locating the zip_data_path (%s)' % \
                zip_data_path
        q2cli.util.exit_with_error(e, header=header)

    try:
        target = hits[0].read_text()
        match = re.search(expression, target, flags=re.MULTILINE)
        if match is None:
            raise AssertionError('Expression %r not found in %s.' %
                                 (expression, hits[0]))
    except Exception as e:
        header = 'There was a problem finding the expression.'
        q2cli.util.exit_with_error(e, header=header)

    msg = '"%s" was found in %s' % (str(expression), str(zip_data_path))
    click.echo(CONFIG.cfg_style('success', msg))