#!/usr/bin/env python3

__doc__ = """ Scriptshifter command line interface. """


import click

from glob import glob
from os import path

from scriptshifter import DB_PATH
from scriptshifter.tables import init_db as _init_db
from scriptshifter.trans import transliterate as _transliterate
from test.integration import test_sample


@click.group()
def cli():
    """ Scriptshifter CLI. """
    pass


@cli.group(name="admin")
def admin_grp():
    """ Admin operations. """
    pass


@admin_grp.command()
def init_db():
    """ Initialize SS database. """
    _init_db()

    click.echo(f"Initialized Scriptshifter DB in {DB_PATH}")


@cli.group(name="test")
def test_grp():
    """ Test operations. """
    pass


@test_grp.command()
def list_samples():
    """ List string sample sets that can be tested. """
    path_ptn = path.join(
            path.dirname(path.realpath(__file__)),
            "tests", "data", "script_samples", "*.csv")

    click.echo("Sample string sets available for batch testing:")
    for fn in glob(path_ptn):
        click.echo(path.splitext(path.basename(fn))[0])


@test_grp.command()
@click.argument("lang")
def samples(lang):
    """
    Test sample strings for language LANG.

    LANG must match one of the names obtained with `test list-samples` command.

    The command will generate a test report file.
    """
    return test_sample(lang)


@cli.group(name="trans")
def trans_grp():
    """ Transliteration and transcription operations. """
    pass


@trans_grp.command()
@click.argument("src", type=click.File("r"))
@click.argument("lang")
@click.option(
        "-c", "--capitalize", default=None,
        help="Capitalize output: `first`, `all`, ot none (the default).")
@click.option(
        "-d", "--t-dir", default="s2r",
        help="Transliteration direction: `s2r' (default)) or `r2s'")
@click.option(
        "-o", "--option", multiple=True,
        help=(
            "Language=specific option. Format: key=value. Multiple -o entries "
            "are possible."))
def transliterate(src, lang, t_dir, capitalize, option):
    """
    Transliterate text from standard input.

    e.g.: `echo "王正强" | /path/to/sscli trans transliterate chinese
    -o "marc_field=100"'
    """
    options = {}
    for opt in option:
        k, v = opt.split("=", 1)
        options[k] = v

    trans, warnings = _transliterate(
            src.read(), lang, t_dir, capitalize, options)

    for w in warnings:
        click.echo(click.style("WARNING: ", fg="yellow") + w)

    click.echo(trans)


if __name__ == "__main__":
    cli()