#!/usr/bin/env python3

from flask import Flask, request
import sqlite3


def get(db):
    cursor = db.cursor()
    query = "SELECT * FROM messages ORDER BY ROWID"
    cursor.execute(query)
    text = ""
    for row in cursor:
        text += row[0] + "\n"
    cursor.execute("DELETE FROM messages")
    db.commit()
    return text


def post(db):
    message = request.form['message']
    cursor = db.cursor()
    query = 'INSERT INTO messages values(?)'
    cursor.execute(query, (message,))
    db.commit()
    return ""


app = Flask(__name__)
db = sqlite3.connect(":memory:", check_same_thread=False)

# Set up tables
cursor = db.cursor()
with open('schema.sql') as fp:
    cursor.executescript(fp.read())

app.add_url_rule('/get', 'get', lambda: get(db))
app.add_url_rule('/post', 'post', lambda: post(db), methods=["POST"])