#!/usr/bin/env python3
"""Entrypoint and CLI handler."""

import argparse
import os

import ansibledoctor.exception
from ansibledoctor import __version__
from ansibledoctor.config import SingleConfig
from ansibledoctor.doc_generator import Generator
from ansibledoctor.doc_parser import Parser
from ansibledoctor.utils import SingleLog


class AnsibleDoctor:
    """Create main object."""

    def __init__(self):
        self.log = SingleLog()
        self.logger = self.log.logger
        self.args = self._cli_args()
        self.config = self._get_config()
        self._execute()

    def _cli_args(self):
        """
        Use argparse for parsing CLI arguments.

        :return: args objec
        """
        # TODO: add function to print to stdout instead of file
        parser = argparse.ArgumentParser(
            description="Generate documentation from annotated Ansible roles using templates"
        )
        parser.add_argument(
            "base_dir", nargs="?", help="base directory (default: current working directory)"
        )
        parser.add_argument(
            "-c", "--config", dest="config_file", help="path to configuration file"
        )
        parser.add_argument(
            "-o", "--output", dest="output_dir", action="store", help="output directory"
        )
        parser.add_argument(
            "-r",
            "--recursive",
            dest="recursive",
            action="store_true",
            default=None,
            help="run recursively over the base directory subfolders",
        )
        parser.add_argument(
            "-f",
            "--force",
            dest="force_overwrite",
            action="store_true",
            default=None,
            help="force overwrite output file",
        )
        parser.add_argument(
            "-d",
            "--dry-run",
            dest="dry_run",
            action="store_true",
            default=None,
            help="dry run without writing",
        )
        parser.add_argument(
            "-n",
            "--no-role-detection",
            dest="role_detection",
            action="store_false",
            default=None,
            help="disable automatic role detection",
        )
        parser.add_argument(
            "-v", dest="logging.level", action="append_const", const=-1, help="increase log level"
        )
        parser.add_argument(
            "-q", dest="logging.level", action="append_const", const=1, help="decrease log level"
        )
        parser.add_argument("--version", action="version", version=f"%(prog)s {__version__}")

        return parser.parse_args().__dict__

    def _get_config(self):
        try:
            config = SingleConfig(args=self.args)
        except ansibledoctor.exception.ConfigError as e:
            self.log.sysexit_with_message(e)

        return config

    def _execute(self):
        cwd = self.config.base_dir
        walkdirs = [cwd]

        if self.config.recursive:
            walkdirs = [f.path for f in os.scandir(cwd) if f.is_dir()]

        for item in walkdirs:
            os.chdir(item)

            self.config.set_config(base_dir=os.getcwd())
            try:
                self.log.set_level(self.config.config["logging"]["level"])
            except ValueError as e:
                self.log.sysexit_with_message(f"Can not set log level.\n{e!s}")
            self.logger.info(f"Using config file: {self.config.config_file}")

            self.logger.debug(f"Using working dir: {item}")

            if self.config.config["role_detection"]:
                if self.config.is_role:
                    self.logger.info(f"Ansible role detected: {self.config.config['role_name']}")
                else:
                    self.log.sysexit_with_message("No Ansible role detected")
            else:
                self.logger.info("Ansible role detection disabled")

            doc_parser = Parser()
            doc_generator = Generator(doc_parser)
            doc_generator.render()


def main():
    AnsibleDoctor()