import logging
import os
from pathlib import Path

from app import utils
from app.config import Configurator
from app.converter.wordpress_markdown import WordpressMarkdownConverter
from app.io.reader import FileReader
from app.io.writer import FileWriter


class Converter:
    """
    Convert Jekyll posts to Hugo posts
    """

    def __init__(self, configurator: Configurator):
        """
        Initializes the converter

        Parameters
        ----------
        configurator : Configurator
            The configurator instance.
        """
        utils.guard_against_none(configurator, "configurator")

        self._logger = logging.getLogger(__name__)

        self._jekyll_posts_path = configurator.source_path
        self._hugo_posts_path = configurator.output_path

        self._logger.info("Converting posts, please wait")
        self._logger.info(
            f"Using source: {self._jekyll_posts_path} output: {self._hugo_posts_path}"
        )

        # The converter that converts the markdown
        self.markdown_converter = WordpressMarkdownConverter(configurator)

    def convert(self):
        """
        Converts the Jekyll posts to Hugo posts
        """
        source_path = self._jekyll_posts_path
        output_path = Path(self._hugo_posts_path)
        posts_converted_count = 0
        try:
            _, _, files = next(os.walk(source_path))
            for file in files:
                source_abs_path = source_path / Path(file)

                file_reader = FileReader(str(source_abs_path))
                file_writer = FileWriter(output_path.joinpath(source_abs_path.name))

                self.markdown_converter.convert_jekyll_to_hugo(
                    file_reader,
                    file_writer,
                )
                posts_converted_count += 1
            self._logger.info(f"Converted {posts_converted_count} posts! 🚀")
        except StopIteration:
            self._logger.fatal(f"Source path {source_path} does not exist!")