#
# Copyright (c) 2024 bartholin
#
# 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/>.
#

import sqlite3
import click
from flask import current_app, g
from os import getenv

def init_app(app):
    app.teardown_appcontext(close_db)
    app.cli.add_command(init_db_command)

@click.command("init-db")
def init_db_command():
    db = get_db()
    with current_app.open_resource("schema.sql") as f:
        db.executescript(f.read().decode("utf-8"))
    click.echo("You successfully initialized the database.")

def get_db():
    try:
        return g.db
    except:
        g.db = sqlite3.connect(
            current_app.config["DATABASE"],
            detect_types=sqlite3.PARSE_DECLTYPES
            )
        g.db.row_factory = sqlite3.Row
        return g.db

def close_db(e=None):
    db = g.pop("db", None)
    if db is not None:
        db.close()

def new_nb():
    res = get_db().execute(
        "SELECT number FROM movies ORDER BY number DESC"
    ).fetchone()
    return 1 if res == None else 1 if res["number"] == None else res["number"] + 1

def move_movie(dest, src):
    db = get_db()
    if dest == "end":
        num = new_nb()
    else:
        num = int(db.execute("SELECT number from movies WHERE id = ?", (dest, )).fetchone()["number"])
        movies = db.execute("SELECT id FROM movies WHERE number >= ? ORDER BY number", (num, )).fetchall()
        nb = num + 1
        for movie in movies:
            db.execute("UPDATE movies SET number = ? WHERE id = ?", (nb, movie["id"]))
            nb += 1
        db.execute("UPDATE movies SET number = ? WHERE id = ?", (num, src))
    db.commit()

def get_movies():
    return get_db().execute("SELECT id, title, year, poster, plot, watched, watchDate, score FROM movies ORDER BY number").fetchall()

def get_movies_to_watch():
    return get_db().execute("SELECT id, title, year, poster, plot, watched, watchDate, score FROM movies WHERE watched = 0 ORDER BY number").fetchall()

def get_watched_movies():
    return get_db().execute("SELECT id, title, year, poster, plot, watched, watchDate, score FROM movies WHERE watched = 1 ORDER BY watchDate DESC").fetchall()

def new_movie(movie):
    db = get_db()
    movie["id"] = db.execute("INSERT INTO movies (title, year, poster, plot, number, watched) VALUES (?,?,?,?,?, 0) RETURNING id",
                             (movie["title"], movie["year"], movie["poster"], movie["plot"], new_nb())).fetchone()["id"]
    db.commit()
    return movie

def new_blank_movie():
    db = get_db()
    id = db.execute("INSERT INTO movies DEFAULT VALUES RETURNING id").fetchone()["id"]
    nb = new_nb()
    db.execute("UPDATE movies SET number = ? WHERE id = ?", (nb, id))
    db.commit()
    return {"id": id, "nb": nb}

def delete_movie(id):
    db = get_db()
    db.execute("DELETE FROM movies WHERE id = ?", (id, ))
    db.commit()

def update(id, field, value):
    db = get_db()
    db.execute("UPDATE movies SET " + field + " = ? WHERE id = ?", (value, id))
    db.commit()

def update_title(id,title):
    update(id, "title", title)

def update_year(id,year):
    update(id, "year", year)

def update_poster(id,poster):
    update(id, "poster", poster)

def update_plot(id, plot):
    update(id, "plot", plot)

def update_watched(id, watched):
    update(id, "watched", watched)

def update_watchDate(id, watchDate):
    update(id, "watchDate", watchDate)

def update_score(id, score):
    update(id, "score", score)