#!/usr/bin/env python3
"""CLI wrapper for running QMK commands.
"""
import os
import subprocess
import sys
from glob import glob
from time import strftime
from importlib import import_module
from importlib.util import find_spec

# Add the QMK python libs to our path
script_dir = os.path.dirname(os.path.realpath(__file__))
qmk_dir = os.path.abspath(os.path.join(script_dir, '..'))
python_lib_dir = os.path.abspath(os.path.join(qmk_dir, 'lib', 'python'))
sys.path.append(python_lib_dir)

# Change to the root of our checkout
os.environ['ORIG_CWD'] = os.getcwd()
os.chdir(qmk_dir)

# Make sure our modules have been setup
with open('requirements.txt', 'r') as fd:
    for line in fd.readlines():
        line = line.strip().replace('<', '=').replace('>', '=')

        if line[0] == '#':
            continue

        if '#' in line:
            line = line.split('#')[0]

        module = line.split('=')[0] if '=' in line else line
        if not find_spec(module):
            print('Your QMK build environment is not fully setup!\n')
            print('Please run `./util/qmk_install.sh` to setup QMK.')
            exit(255)

# Figure out our version
command = ['git', 'describe', '--abbrev=6', '--dirty', '--always', '--tags']
result = subprocess.run(command, universal_newlines=True, capture_output=True)

if result.returncode == 0:
    os.environ['QMK_VERSION'] = 'QMK ' + result.stdout.strip()
else:
    os.environ['QMK_VERSION'] = 'QMK ' + strftime('%Y-%m-%d-%H:%M:%S')

# Setup the CLI
import milc
milc.EMOJI_LOGLEVELS['INFO'] = '{fg_blue}ψ{style_reset_all}'

# If we were invoked as `qmk <cmd>` massage sys.argv into `qmk-<cmd>`.
# This means we can't accept arguments to the qmk script itself.
script_name = os.path.basename(sys.argv[0])
if script_name == 'qmk':
    if len(sys.argv) == 1:
        milc.cli.log.error('No subcommand specified!\n')

    if len(sys.argv) == 1 or sys.argv[1] in ['-h', '--help']:
        milc.cli.echo('usage: qmk <subcommand> [...]')
        milc.cli.echo('\nsubcommands:')
        subcommands = glob(os.path.join(qmk_dir, 'bin', 'qmk-*'))
        for subcommand in sorted(subcommands):
            subcommand = os.path.basename(subcommand).split('-', 1)[1]
            milc.cli.echo('\t%s', subcommand)
        milc.cli.echo('\nqmk <subcommand> --help for more information')
        exit(1)

    if sys.argv[1] in ['-V', '--version']:
        milc.cli.echo(os.environ['QMK_VERSION'])
        exit(0)

    sys.argv[0] = script_name = '-'.join((script_name, sys.argv[1]))
    del sys.argv[1]

# Look for which module to import
if script_name == 'qmk':
    milc.cli.print_help()
    exit(0)
elif not script_name.startswith('qmk-'):
    milc.cli.log.error('Invalid symlink, must start with "qmk-": %s', script_name)
else:
    subcommand = script_name.replace('-', '.').replace('_', '.').split('.')
    subcommand.insert(1, 'cli')
    subcommand = '.'.join(subcommand)

    try:
        import_module(subcommand)
    except ModuleNotFoundError as e:
        if e.__class__.__name__ != subcommand:
            raise

        milc.cli.log.error('Invalid subcommand! Could not import %s.', subcommand)
        exit(1)

if __name__ == '__main__':
    milc.cli()
