# -*- coding: utf-8 -*-
import os
import sqlite3

from flask import Flask
from flask import redirect
from flask import request
from flask import session
from jinja2 import Template

app = Flask(__name__)

@app.route("/loginpage")
def render_login_page(thing):
    # <expect-error>
    return '''
<p>{}</p>
<form method="POST" style="margin: 60px auto; width: 140px;">
    <p><input name="username" type="text" /></p>
    <p><input name="password" type="password" /></p>
    <p><input value="Login" type="submit" /></p>
</form>
    '''.format(thing)

@app.route("/loginpage2")
def render_login_page2(thing):
    # <expect-error>
    return '''
<p>%s</p>
<form method="POST" style="margin: 60px auto; width: 140px;">
    <p><input name="username" type="text" /></p>
    <p><input name="password" type="password" /></p>
    <p><input value="Login" type="submit" /></p>
</form>
    ''' % thing

@app.route("/loginpage3")
def render_login_page3(thing):
    # <expect-error>
    return '''
<p>%s</p>
<form method="POST" style="margin: 60px auto; width: 140px;">
    <p><input name="username" type="text" /></p>
    <p><input name="password" type="password" /></p>
    <p><input value="Login" type="submit" /></p>
</form>
    ''' % (thing,)

@app.route("/loginpage4")
def render_login_page4():
    thing = "blah"
    # the string below is now detected as a literal string after constant
    # propagation
    # <no-error>
    return thing + '''
<form method="POST" style="margin: 60px auto; width: 140px;">
    <p><input name="username" type="text" /></p>
    <p><input name="password" type="password" /></p>
    <p><input value="Login" type="submit" /></p>
</form>
    '''

@app.route("/loginpage5")
def render_login_page5():
    safe_thing = "blah"
    # same, now ok thx to the constant propagation
    # <no-error>
    return f'''
{safe_thing}
<form method="POST" style="margin: 60px auto; width: 140px;">
    <p><input name="username" type="text" /></p>
    <p><input name="password" type="password" /></p>
    <p><input value="Login" type="submit" /></p>
</form>
    '''

@app.route("/loginpage5")
def render_login_page5(thing):
    # <expect-error>
    return f'''
{thing}
<form method="POST" style="margin: 60px auto; width: 140px;">
    <p><input name="username" type="text" /></p>
    <p><input name="password" type="password" /></p>
    <p><input value="Login" type="submit" /></p>
</form>
    '''

# cf. https://raw.githubusercontent.com/Deteriorator/Python-Flask-Web-Development/53be4c48ffbe7d30a1bde5717658f6de81820360/demo/http/app.py
@app.route('/hello')
def hello():
    name = request.args.get('name')
    if name is None:
        name = request.cookies.get('name', 'Human')
    respones = '<h1>Hello, %s</h1>' % name
    if 'logged_in' in session:
        respones += '[Authenticated]'
    else:
        respones += '[Not Authenticated]'
    # <expect-error>
    return respones

@app.route('/hello2')
def hello2():
    name = request.args.get('name')
    if name is None:
        name = request.cookies.get('name', 'Human')
    respones = '<h1>Hello, {}</h1>'.format(name)
    if 'logged_in' in session:
        respones += '[Authenticated]'
    else:
        respones += '[Not Authenticated]'
    # <expect-error>
    return respones

@app.route('/totally_not_bad')
def totally_not_bad():
    # ok
    return (
      "a" + "\n" +
      "b"
    )

if __name__ == '__main__':
    app.run(debug=True)