"""
Vhex package cloning user interface
"""
import os
import sys

from core.logger import log
import core.pkg


__all__ = [
    'pkg_clone_cli_parse'
]


__HELP__ = r"""
vxsdk-pkg-clone
Package manager cloning part

USAGE:
    vxsdk pkg clone [ OPTIONS ] [ targets[, ...]]

DESCRIPTION:
    The installation part is simple, you juste need to refer the repository
    name and, optionally, the version information. Like this:

        <NAME@version> (ex: vxKernel@1.2.3)

    This will allow the searching to try to match package with specific version
    information. This part is very powerfull because If the 'version' is
    detected to respect the correct semantic versioning, you can perform version
    operations in the version target:

        Caret requirements (^)
            ^1.2.3  :=  >=1.2.3, <2.0.0
            ^1.2    :=  >=1.2.0, <2.0.0
            ^1      :=  >=1.0.0, <2.0.0
            ^0.2.3  :=  >=0.2.3, <0.3.0
            ^0.2    :=  >=0.2.0, <0.3.0
            ^0.0.3  :=  >=0.0.3, <0.0.4
            ^0.0    :=  >=0.0.0, <0.1.0
            ^0      :=  >=0.0.0, <1.0.0

        Tilde requirements (~)
            ~1.2.3  := >=1.2.3, <1.3.0
            ~1.2    := >=1.2.0, <1.3.0
            ~1      := >=1.0.0, <2.0.0

        Wildcard requirements (*)
            *       := >=0.0.0
            1.*     := >=1.0.0, <2.0.0
            1.2.*   := >=1.2.0, <1.3.0

    Note that it's possible that a package can have two same version (one for
    branch name and another for a tag), by default, the tag is always selected,
    but here the display information will explicitly describe if the version is
    a tag and / or a branch.

OPTIONS:
    -y, --yes               Do not ask for interactive confirmation
    -n, --no-build          Do not build the project, just clone
    -h, --help              Print this help and exit
""".strip()

#---
# Entry point of the module
#---

def pkg_clone_cli_parse(argv):
    """ Clone a particular package """
    if not argv:
        log.error(__HELP__)
        sys.exit(84)
    if '-h' in argv or '--help' in argv:
        log.user(__HELP__)
        sys.exit(0)

    confirm = True
    for arg in argv:
        if arg in ['-y', '--yes', '-c', '--confirm']:
            confirm = arg in ['-c', '--confirm']
            continue
        core.pkg.clone(
            arg.split('@')[0],
            None if len(arg.split('@')) != 2 else arg.split('@')[1],
            os.getcwd(),
            confirm
        )
        return 0