from datetime import date
from flask import render_template, Flask, request
from json import JSONEncoder
import bcnsGDSSite.modules.init
import os
import inspect
import json
import glob
import tomllib


class MyJSONEncoder(JSONEncoder):
    def default(self, o):
        if isinstance(o, date):
            return o.isoformat()

        return super().default(o)


def create_app(test_config=None):
    app = Flask(__name__, instance_relative_config=True)
    app.config.from_mapping(
        SECRET_KEY='dev',
        DATABASE=os.path.join(app.instance_path, 'bcns_gds.sqlite'),
    )

    app.config['JSON_AS_ASCII'] = False

    if test_config is None:
        # load the instance config, if it exists, when not testing
        app.config.from_file("config.toml", load=tomllib.load, text=False)
    else:
        # load the test config if passed in
        app.config.from_mapping(test_config)

    # ensure the instance folder exists
    try:
        os.makedirs(app.instance_path, exist_ok=True)
    except OSError:
        print(
            "Error: Instance-path not found!" +
            " No configuration-file has been loaded")
        pass

    bcnsGDSSite.modules.init.init(app.config)

    from bcnsGDSSite.modules.gamelist import gamelist
    from bcnsGDSSite.modules.game import game
    app.register_blueprint(gamelist)
    app.register_blueprint(game)

    languages = bcnsGDSSite.modules.init.get_languages()
    if not languages:
        languages_path = os.path.dirname(
            os.path.abspath(inspect.getfile(
                inspect.currentframe())))
        language_list = glob.glob(languages_path + "/language/*.json")
        print("### Loaded languages")
        for language in language_list:
            filename = os.path.basename(language)
            lang_code = filename.split('.')[0]
            with open(language, 'r', encoding='utf-8') as file:
                print("# ", lang_code)
                languages[lang_code] = json.loads(file.read())
        bcnsGDSSite.modules.init.set_languages(language)

    # Check if valid language code is set. If not, return app default
    def lang(lang_code):
        if lang_code not in languages:
            return "en_US"
        return lang_code

    @app.route("/", methods=["GET", "POST"])
    @app.route("/<lang_code>/", methods=["GET", "POST"])
    def home(lang_code=False):
        lang_code = lang(lang_code)
        if request.form:
            lang_code = request.form["language_select"]
        return render_template('home.html', **languages[lang_code],
                               lang_code=lang_code,
                               languages=languages.keys())

    return app