#!/usr/bin/python3

#----------------------------------------------------------------------
# Backend utilities for the Klimatanalys Norr project (compile county & municipality codes)
# Copyright © 2024 Guilhem Moulin <info@guilhem.se>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.
#----------------------------------------------------------------------

# pylint: disable=missing-module-docstring

import sys
import csv
from pathlib import Path
import json

basedir = Path(sys.argv[0]).parent
data = {}
def readCSV(pathname): # pylint: disable=invalid-name
    """Read CSV"""
    with open(pathname, mode='r', newline='', encoding='utf-8') as fp:
        reader = csv.DictReader(fp, delimiter='\t', dialect='unix')
        for row in reader:
            code = row['Code']
            if code in data:
                raise RuntimeError(f'Duplicate code {code}')
            data[code] = row['Name']

# The source (SCB) lists all codes in same file: they differ only in
# length (2 digits for counties, 4 digits for municipalities) so it
# doesn't hurt to merge them back in a single JSON dictionary.  Also
# having a single file simplifies the client-side logic.
for path in sys.argv[1:]:
    readCSV(path)
json.dump(data, sys.stdout, ensure_ascii=False, sort_keys=True, separators=(',', ':'))