from datetime import datetime
import hashlib
import sqlite3


def con3():
    conn = sqlite3.connect('db/db.sqlite')
    return conn


### User.py ###
def create_user(name: str, email: str, password: str):
    password = hashlib.sha256(password.encode()).hexdigest()
    now = datetime.now().isoformat()
    query = (f"INSERT INTO users (name, email, password, created_at, updated_at) VALUES ('{name}', '{email}', "
             f"'{password}', '{now}', '{now}');")
    conn = con3()
    cursor = conn.cursor()
    cursor.execute(query)
    conn.commit()
    conn.close()
    return cursor.lastrowid


def get_user(id: int):
    query = f"SELECT * FROM users WHERE id = {id};"
    conn = con3()
    cursor = conn.cursor()
    cursor.execute(query)
    user = cursor.fetchone()
    conn.close()
    return user


def get_user_by_email(email: str):
    query = f"SELECT * FROM users WHERE email = '{email}';"
    conn = con3()
    cursor = conn.cursor()
    cursor.execute(query)
    user = cursor.fetchone()
    conn.close()
    return user


def update_user(id: int, name: str, email: str, password: str):
    query = f"UPDATE users SET name = {name}, email = {email}, password = {password} WHERE id = {id};"
    conn = con3()
    cursor = conn.cursor()
    cursor.execute(query)
    user = cursor.fetchone()
    conn.close()
    return cursor.lastrowid


def delete_user(id: int):
    query = f"DELETE FROM habits WHERE user_id = {id};"
    query2 = f"DELETE FROM users WHERE id = {id};"
    conn = con3()
    cursor = conn.cursor()
    cursor.execute(query)
    cursor.execute(query2)
    conn.commit()
    conn.close()
    return cursor.lastrowid


### Habit.py ###
def create_habit(user_id: int, name: str, times: int, unit: int, slot: int, note: str | None=None):
    now = datetime.now().isoformat()
    query = (f"INSERT INTO habits (user_id, name, note, times, unit, slot, created_at, updated_at) VALUES ('{user_id}', "
             f"'{name}', '{note}', '{times}', '{unit}', '{slot}', '{now}', '{now}');")
    conn = con3()
    cursor = conn.cursor()
    cursor.execute(query)
    conn.commit()
    conn.close()
    return cursor.lastrowid


def get_habit(id: int):
    query = f"SELECT * FROM habits WHERE id = {id};"
    conn = con3()
    cursor = conn.cursor()
    cursor.execute(query)
    habit = cursor.fetchone()
    conn.close()
    return habit


def get_habits(user_id: int):
    query = f"SELECT * FROM habits WHERE user_id = {user_id};"
    conn = con3()
    cursor = conn.cursor()
    cursor.execute(query)
    habits = cursor.fetchall()
    conn.close()
    return habits


def get_next_slot(user_id: int):
    query = f"SELECT slot FROM habits WHERE user_id = {user_id} ORDER BY slot DESC LIMIT 1;"
    conn = con3()
    cursor = conn.cursor()
    cursor.execute(query)
    slot = cursor.fetchone()
    conn.close()
    return slot[0] + 1 if slot else 0


def get_slots(user_id: int):
    query = f"SELECT id, slot FROM habits WHERE user_id = {user_id} ORDER BY slot;"
    conn = con3()
    cursor = conn.cursor()
    cursor.execute(query)
    slots = cursor.fetchall()
    conn.close()
    return slots


def update_habit(id: int, name: str, note: str, times: int, unit: int):
    query = f"UPDATE habits SET name = {name}, note = {note}, times = {times}, unit = {unit} WHERE id = {id};"
    conn = con3()
    cursor = conn.cursor()
    cursor.execute(query)
    conn.close()
    return cursor.lastrowid


def update_slot(id: int, slot: int):
    query = f"UPDATE habits SET slot = {slot} WHERE id = {id};"
    conn = con3()
    cursor = conn.cursor()
    cursor.execute(query)
    conn.close()
    return cursor.lastrowid


def delete_habit(id: int):
    query = f"DELETE FROM habits WHERE id = {id};"
    conn = con3()
    cursor = conn.cursor()
    cursor.execute(query)
    conn.commit()
    conn.close()


### HabitTrackings.py ###
def create_habitTrackings(habit_id: int, times: int):
    now = datetime.now().isoformat()
    query = (
        f"INSERT INTO habit_trackings (habit_id, times, created_at) VALUES ('{habit_id}', '{times}','{now}');")
    conn = con3()
    cursor = conn.cursor()
    cursor.execute(query)
    conn.commit()
    conn.close()
    return cursor.lastrowid


def get_habitTrackings(id: int):
    query = f"SELECT * FROM habit_trackings WHERE id = {id};"
    conn = con3()
    cursor = conn.cursor()
    cursor.execute(query)
    habit_tracking = cursor.fetchone()
    conn.close()
    return habit_tracking


def get_habitTrackings_by_habit_id(habit_id: int):
    query = f"SELECT * FROM habit_trackings WHERE habit_id = {habit_id};"
    conn = con3()
    cursor = conn.cursor()
    cursor.execute(query)
    habit_trackings = cursor.fetchall()
    conn.close()
    return habit_trackings


def delete_habitTrackings(id: int):
    query = f"DELETE FROM habit_trackings WHERE id = {id};"
    conn = con3()
    cursor = conn.cursor()
    cursor.execute(query)
    conn.commit()
    conn.close()