from flask import Flask, render_template, request, redirect
import mysql.connector
import os

mydb = mysql.connector.connect(
    host=os.environ.get("HOST"),
    user=os.environ.get("USER"),
    password=os.environ.get("PASSWORD"),
    database="new_trello"
)
mydb.autocommit = True
cursor = mydb.cursor()
app = Flask(__name__)

@app.get("/")
def show_all():
    cursor.execute('SELECT * FROM items WHERE parent_id IS NULL')
    return render_template('show.html', cursor=cursor)

@app.post("/")
def create():
    if 'parent_id' in request.form:
        cursor.execute(
            'INSERT INTO items (title, description,parent_id) VALUES(%s,%s,%s)', 
            [request.form['title'],request.form['description'],int(request.form['parent_id'])]
        )
        return redirect('/'+request.form['parent_id'])
    else:
        cursor.execute(
            'INSERT INTO items (title, description) VALUES(%s,%s)', 
            [request.form['title'],request.form['description']]
        )
        return redirect('/')

@app.post("/<id>")
def deleteUpdate(id):
    print(request.args.get('_method'))
    # TODO: deal with deleting item that has children
    if request.args.get('_method') == 'DELETE':
        cursor.execute('DELETE FROM items WHERE id=%s LIMIT 1', [id])
    else:
        cursor.execute(
            'UPDATE items SET title=%s, description=%s, parent_id=%s WHERE id=%s',
            [request.form['title'], request.form['description'], request.form['parent_id'] if request.form['parent_id'] != '' else None, id]
        )
    if 'parent_id' in request.form:
        return redirect('/'+request.form['parent_id'])
    else:
        return redirect('/')

@app.get("/<id>")
def show(id):
    cursor.execute('SELECT * FROM items WHERE id=%s', [id])
    parent=cursor.fetchone()
    cursor.execute('SELECT * FROM items WHERE parent_id=%s',[id])
    return render_template('show.html', parent=parent, cursor=cursor)

@app.get('/<id>/edit')
def edit(id):
    cursor.execute('SELECT * FROM items WHERE id=%s', [id])
    return render_template('edit.html', item=cursor.fetchone())