# -*- coding: utf-8 -*-

import textwrap
from argparse import Namespace, ArgumentParser

from ..Cmd import Cmd

class CmdCreatePkgConfig(Cmd): # export

    def __init__(self) -> None:
        super().__init__('create-pkg-config', help='Generate a pkg-config file for a module')

    def add_arguments(self, parser: ArgumentParser) -> None:
        super().add_arguments(parser)
        parser.add_argument('-F', '--project-descr-file', default=None)
        parser.add_argument('-d', '--description', default=None)
        parser.add_argument('-n', '--name', default=None)
        parser.add_argument('-s', '--summary', default=None)
        parser.add_argument('-p', '--prefix', default=None)
        parser.add_argument('-v', '--version', default=None)
        parser.add_argument('-c', '--cflags', default=None)
        parser.add_argument('-l', '--libflags', default=None)
        parser.add_argument('-r', '--requires_run', default=None)
        parser.add_argument('-R', '--requires_build', default=None)
        parser.add_argument('-V', '--variables', nargs='*')

    def _run(self, args: Namespace) -> None:
        project_conf_var_keys = ['description', 'summary', 'requires_run', 'requires_build']
        merged: dict[str, str] = {}
        for key in project_conf_var_keys:
            val = getattr(args, key)
            if val is not None and args.project_descr_file:
                val = self.app.get_value(args.name, key, None)
            merged[key] = val

        contents = textwrap.dedent(f"""\
        prefix={args.prefix}
        exec_prefix={{prefix}}
        includedir={{prefix}}/include
        libdir={{exec_prefix}}/lib

        Name: {args.name}
        Description: {merged['summary']}
        Version: {args.version}
        """)

        if args.cflags is not None:
            contents += f"Cflags: {args.cflags}\n"
        if args.libflags is not None:
            contents += f"Libs: {args.libflags}\n"
        if merged['requires_run'] is not None:
            contents += f"Requires: {cleanup_requires(merged['requires_run'])}"
        if merged['requires_build'] is not None:
            contents += f"Requires.private: {cleanup_requires(merged['requires_build'])}"
        # not sure what to do with requires_devel

        print(contents)