"""
cli.conv.assets - Vhex asset converter user interface
"""
import os

from core.logger import log
from core.conv import assets_generate

__all__ = [
    'assets_conv_cli'
]

#---
# Internals
#---

__HELP__ = """vxsdk-converter-asset
Convert all assets file in the project directory.

USAGE:
    vxsdk conv-asset [project path] [OPTIONS]

DESCRIPTION:
    Convert all assets file in the asset directory. This part of the converter
    module will scan the provided folder (or the current working directory) and
    will try to find all `vxconv.txt` file, which describe all assets that
    should be converted.

    If no argument is provided, then the current working directory is used as
    asset prefix and a storag for all generated source file. You can modify
    this behaviour using OPTIONS.

    For more information about the `vxconv.txt` in the wiki.

OPTIONS:
    -o <output prefix>     The prefix for source file that will be generated
    -h, --help             Display this help
"""

#---
# Public
#---

def assets_conv_cli(argv):
    """Process CLI arguments"""
    # check obvious flags
    if '-h' in argv or '--help' in argv:
        log.user(__HELP__)
        return 0

    # fetch user indication
    manual_output = False
    prefix_output = None
    prefix_asset = None
    for arg in argv:
        if arg == '-o':
            manual_output = True
            continue
        if manual_output:
            prefix_output = arg
            continue
        if prefix_asset:
            log.warn(f"warning: previous path ({prefix_asset}) dropped")
        prefix_asset = arg

    # check indication
    if not prefix_asset:
        prefix_asset = os.getcwd()
    if not prefix_output:
        prefix_output = os.getcwd()
    prefix_asset = os.path.abspath(prefix_asset)
    prefix_output = os.path.abspath(prefix_output)

    # generate asset information
    return assets_generate(prefix_asset, prefix_output, True)