import json
import os
from flask import Flask, redirect, render_template, g, request, session, url_for
from pathlib import Path
from .auth import login_required


DATABASE_NAME = "kanken_online.sqlite"
def create_app(test_config=None):
    app = Flask(__name__, instance_relative_config=True)
    app.config.from_mapping(
        SECRET_KEY="dev",
        DATABASE=str(Path(app.instance_path) / DATABASE_NAME)
    )

    if test_config is None:
        app.config.from_pyfile("config.py", silent=True)
    else:
        app.config.from_mapping(test_config)
    
    # Ensure instance path exists
    os.makedirs(app.instance_path, exist_ok=True)

    @app.route("/hello")
    def hello():
        return "Hello, World!"
    
    @app.route("/")
    def index():
        return render_template("index.html")
    
    @app.route("/about")
    def about_page():
        return render_template("about.html")

    def update_settings(form):
        session["language"] = form["language"]
        session["theme"] = form["theme"]
        return redirect("/options")
    
    @app.route("/options", methods=["GET", "POST"])
    @login_required
    def options():
        if request.method == "GET":
            return render_template("options.html")
        else:
            return update_settings(request.form)
    
    @app.route("/kanji/<kanji>")
    def kanji_page(kanji: str):
        # TODO use database to get kanji
        class Kanji():
            pass

        # Highly tentative testing data
        kanji = Kanji()
        kanji.character = "麻"
        kanji.is_joyo = "joyo kanji"
        kanji.level = "pre-2"
        kanji.strokes = 11
        kanji.radical = "麻"
        kanji.added_strokes = 0
        kanji.goon = "マ"
        kanji.kanon = "バ"
        kanji.toon = ""
        kanji.soon = ""
        kanji.kanyoon = ""
        kanji.kun = "あさ, しびれる"
        kanji.meanings = "①あさ。クワ科の一年草。また、あさ類の総称。「亜麻」「乱麻」 ②しびれる。しびれ。「麻酔」「麻痺(マヒ)」類痲(マ)"
        kanji.glyph_origin = "会意。广(げん)（いえ）と、𣏟(はい)（あさ）とから成り、屋下であさの繊維をはぎとる、ひいて「あさ」の意を表す。"
        
        return render_template("kanji.html", kanji=kanji)

    @app.route("/kotoba/<kotoba>")
    def kotoba_page(kotoba: str):
        return render_template("kotoba.html", kotoba=kotoba)
    
    from . import database
    database.initialize_app(app)

    from . import auth, api, forum, search, indices
    app.register_blueprint(auth.blueprint)
    app.register_blueprint(api.blueprint)
    app.register_blueprint(forum.blueprint)
    app.register_blueprint(search.blueprint)
    app.register_blueprint(indices.blueprint)

    from . import lang

    @app.route("/translations", methods=["GET", "POST"])
    def strings_translation():
        if request.method == "GET":
            strings = {}
            for language, language_data in lang.LANGUAGES.items():
                strings[language] = {
                    string: translation for string, translation in language_data.items()
                }

            return render_template("translations.html", strings=strings)
        else:
            strings = {}
            for i, language in enumerate(lang.LANGUAGES):
                strings[language] = {
                    string: request.form.getlist(string)[i] for string in request.form
                }
                with open(Path(app.root_path, "static", "lang", f"{language}.json"), mode="w") as f:
                    json.dump(strings[language], f, ensure_ascii=False, indent=0)
            return redirect("/translations")

    # def use_english(text_id: str):
    #     return lang.localize(text_id, lang.JAPANESE)
    app.jinja_env.globals.update(localize=lang.localize)
    

    return app