import datetime
from pathlib import Path
from typing import Dict, Optional, List
from datetime import *
import csv

from PyTeX.formatter import Formatter
from PyTeX.utils import ensure_file_integrity


class DictionaryFormatter(Formatter):
    def __init__(self, kind: str, author: str, header: Optional[List[str]]):
        self.header = header
        self.kind = kind.lower()
        self.author = author
        author_parts = self.author.lower().replace('ß', 'ss').split(' ')
        self.author_acronym = author_parts[0][0] + author_parts[-1]
        self.dictname = r'translator-{kind}-dictionary'.format(
            kind=self.kind
        )
        self.name_lowercase = self.dictname + '-{language}'
        self.file_name = self.name_lowercase + '.dict'
        self.date = datetime.now().strftime('%Y/%m/%d')
        self.year = int(datetime.now().strftime('%Y'))
        self.replace_dict: Dict = {}
        self.arg_replace_dict: Dict = {}
        self.source_file_name = "not specified"
        super().__init__()

    def expected_file_name(self):
        return self.file_name

    def format_file(
            self,
            input_path: Path,
            output_dir: Path = None,
            relative_name: Optional[str] = None,
            last_build_info: Optional[List[Dict]] = None
    ) -> List[str]:
        self.source_file_name = str(input_path.name)
        written_files = []

        if self.header:
            lines = '%' * 80 + '\n' \
                       + '\n'.join(map(lambda line: '% ' + line, self.header)) \
                       + '\n' + '%' * 80 + '\n\n'
        else:
            lines = []
        if output_dir is None:
            output_dir = input_path.parent
        output_dir.mkdir(parents=True, exist_ok=True)

        with open(input_path, newline='') as csvfile:
            spamreader = csv.reader(csvfile, delimiter=',', quotechar='|')
            langs = next(spamreader)
            translations = {}
            for lang in langs[1:]:
                translations[lang] = {}
            for line in spamreader:
                for n in range(1, len(line)):
                    translations[langs[n]][line[0]] = line[n]

            for lang in langs[1:]:
                lang_lines = lines
                lang_lines += r'\ProvidesDictionary{{{dictname}}}{{{lang}}}'.format(
                    dictname=self.dictname,
                    lang=lang
                )
                lang_lines += '\n'
                lang_lines += '\n'
                for key in translations[lang].keys():
                    if translations[lang][key].strip() != '':
                        lang_lines += r'\providetranslation{{{key}}}{{{translation}}}'.format(
                            key=key.strip(),
                            translation=translations[lang][key].strip()
                        )
                        lang_lines += '\n'
                ensure_file_integrity(
                    output_dir / self.file_name.format(language=lang),
                    str(Path(relative_name).parent / self.file_name.format(language=lang)),
                    last_build_info
                )
                (output_dir / self.file_name.format(language=lang)).write_text(''.join(lang_lines))
                written_files.append(self.file_name.format(language=lang))
        return written_files

    def make_default_macros(self):
        pass