import os
from pathlib import Path

from flask import Flask, redirect, render_template, url_for
from flask_wtf import FlaskForm
from flask_wtf.csrf import CSRFProtect
from flask_wtf.file import FileAllowed, FileField, FileRequired
from temp_index import make_cards
from werkzeug.utils import secure_filename
from wtforms import RadioField, StringField
from wtforms.validators import DataRequired

app = Flask(__name__)
app.config["SECRET_KEY"] = "foo"
app.config["WTF_CSRF_SECRET_KEY"] = "bar"


CWD = Path().resolve()


class UploadForm(FlaskForm):
    metadata = FileField(
        "Metadata file",
        validators=[FileAllowed(["db"], "Metadata databases only"), FileRequired()],
    )
    title = RadioField("title", choices=[("side a", "side a"), ("side b", "side b")])
    author = RadioField("author", choices=[("side a", "side a"), ("side b", "side b")])
    tags = RadioField("tags", choices=[("side a", "side a"), ("side b", "side b")])
    comments = RadioField(
        "comments", choices=[("side a", "side a"), ("side b", "side b")]
    )
    timestamp = RadioField(
        "timestamp", choices=[("side a", "side a"), ("side b", "side b")]
    )


@app.route("/")
def home():
    upload_form = UploadForm()
    return render_template("index.html", upload_form=upload_form)


@app.route("/upload", methods=["POST"])
def upload():
    upload_form = UploadForm()

    if upload_form.validate_on_submit():
        f = upload_form.metadata.data
        filename = secure_filename(f.filename)
        metadata_fpath = os.path.join(CWD, "metadatum", filename)
        f.save(metadata_fpath)

        pdf = os.path.join(CWD, "static", "generated", "{}.pdf".format(filename))
        metadata = "sqlite:///{}".format(os.path.join(CWD, "metadatum", filename))
        make_cards(
            pdf, metadata, ["title", "timestamp", "comments", "authors"], ["tags"]
        )
        pdf_url = url_for("static", filename="generated/{}.pdf".format(filename))
        return render_template("index.html", upload_form=upload_form, pdf=pdf_url)

    return render_template("index.html", upload_form=upload_form)