app.py

# ----------------------------------------------------------------------------#
# Imports
# ----------------------------------------------------------------------------#

import json
import dateutil.parser
import babel
from flask import Flask, render_template, request, Response, flash, redirect, url_for
from flask_moment import Moment
from flask_sqlalchemy import SQLAlchemy
import logging
from logging import Formatter, FileHandler
from flask_wtf import Form
from forms import *
from config import DATABASE_URL
from flask_migrate import Migrate
from model import db, Venue, Artist, Show
from sqlalchemy import func
from datetime import date

# ----------------------------------------------------------------------------#
# App Config.
# ----------------------------------------------------------------------------#
app = Flask(__name__)
moment = Moment(app)
app.config.from_object('config')
db.init_app(app)

# TODO: connect to a local postgresql database
app.config['SQLALCHEMY_DATABASE_URI'] = DATABASE_URL
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False

# ----------------------------------------------------------------------------#
# Models.
# ----------------------------------------------------------------------------#

migrate = Migrate(app, db)


# ----------------------------------------------------------------------------#
# Filters.
# ----------------------------------------------------------------------------#

def format_datetime(value, format='medium'):
    date = dateutil.parser.parse(value)
    if format == 'full':
        format = "EEEE MMMM, d, y 'at' h:mma"
    elif format == 'medium':
        format = "EE MM, dd, y h:mma"
    return babel.dates.format_datetime(date, format)


app.jinja_env.filters['datetime'] = format_datetime


# ----------------------------------------------------------------------------#
# Controllers.
# ----------------------------------------------------------------------------#

@app.route('/')
def index():
    return render_template('pages/home.html')


#  Venues
#  ----------------------------------------------------------------

@app.route('/venues')
def venues():
    # TODO: replace with real venues data.
    try:
        result1 = Venue.query.add_columns(Venue.state, Venue.city).all()
        result2 = Venue.query.add_columns(Venue.id, Venue.name).all()
        result3 = Show.query.join(Venue, Venue.id == Show.venue_id).filter(Show.start_time < date.today()).count()
        data = []
        for i, _ in enumerate(result2):
            data.append(
                {
                    "city": result1[i].city,
                    "state": result1[i].state,
                    "venues": [{
                        "id": result2[i].id,
                        "name": result2[i].name,
                        "num_upcoming_shows": result3,
                    }]
                }
            )
    except:
        print("in exception")
        flash('Oops! Something went wrong')
        return
    return render_template('pages/venues.html', areas=data)


@app.route('/venues/search', methods=['POST'])
def search_venues():
    # TODO: implement search on artists with partial string search. Ensure it is case-insensitive.
    # seach for Hop should return "The Musical Hop".
    # search for "Music" should return "The Musical Hop" and "Park Square Live Music & Coffee"
    try:
        search_term = request.form.get('search_term')
        data = Venue.query.filter(Venue.name.ilike('%' + search_term + '%')).all()

        response = {
            "count": len(data),
            "data": data
        }
    except:
        flash('Oops! Something went wrong')
    return render_template('pages/search_venues.html', results=response,
                           search_term=request.form.get('search_term', ''))


@app.route('/venues/<int:venue_id>')
def show_venue(venue_id):
    # shows the venue page with the given venue_id
    # TODO: replace with real venue data from the venues table, using venue_id
    try:
        result_venue = Venue.query.filter(Venue.id == venue_id).first()
        result_past_shows_count = Show.query.join(Venue, Venue.id == Show.venue_id).filter(
            Show.start_time < date.today()).count()
        result_upcoming_shows_count = Show.query.join(Venue, Venue.id == Show.venue_id).filter(
            Show.start_time > date.today()).count()

        result_past_shows = Show.query.join(Venue, Venue.id == Show.venue_id) \
            .join(Artist, Artist.id == Show.artist_id) \
            .add_columns(Artist.id.label('artist_id'), Artist.name.label('artist_name'),
                         Artist.image_link.label('artist_image_link'), Show.start_time) \
            .filter(Show.start_time < date.today()).all()

        result_upcoming_shows = Show.query.join(Venue, Venue.id == Show.venue_id) \
            .join(Artist, Artist.id == Show.artist_id) \
            .add_columns(Artist.id.label('artist_id'), Artist.name.label('artist_name'),
                         Artist.image_link.label('artist_image_link'), Show.start_time) \
            .filter(Show.start_time > date.today()).all()
        data = {
            "id": result_venue.id,
            "name": result_venue.name,
            "genres": result_venue.genres,
            "address": result_venue.address,
            "city": result_venue.city,
            "state": result_venue.state,
            "phone": result_venue.phone,
            "website": result_venue.website,
            "facebook_link": result_venue.facebook_link,
            "seeking_talent": result_venue.seeking_talent,
            "seeking_description": result_venue.seeking_description,
            "image_link": result_venue.image_link,
            "past_shows": result_past_shows,
            "upcoming_shows": result_upcoming_shows,
            "past_shows_count": result_past_shows_count,
            "upcoming_shows_count": result_upcoming_shows_count,
        }
    except:
        flash('Oops! Something went wrong')
        return
    # data = list(filter(lambda d: d['id'] == venue_id, [data1, data2, data3]))[0]
    return render_template('pages/show_venue.html', venue=data)


#  Create Venue
#  ----------------------------------------------------------------

@app.route('/venues/create', methods=['GET'])
def create_venue_form():
    form = VenueForm()
    return render_template('forms/new_venue.html', form=form)


@app.route('/venues/create', methods=['POST'])
def create_venue_submission():
    try:
        name = request.form.get('name')
        city = request.form.get('city')
        state = request.form.get('state')
        genres = request.form.getlist('genres')

        address = request.form.get('address')
        phone = request.form.get('phone')
        image_link = request.form.get('image_link')
        facebook_link = request.form.get('facebook_link')
        website = request.form.get('website')
        seeking_talent = request.form.get('seeking_talent')
        seeking_description = request.form.get('seeking_description')

        # TODO: insert form data as a new Venue record in the db, instead
        data = Venue(
            name=name,
            city=city,
            state=state,
            genres=genres,
            address=address,
            phone=phone,
            image_link=image_link,
            facebook_link=facebook_link,
            website=website,
            seeking_talent=seeking_talent,
            seeking_description=seeking_description
        )
        # TODO: modify data to be the data object returned from db insertion
        db.session.add(data)
        db.session.commit()
        # on successful db insert, flash success
        flash('Venue ' + request.form['name'] + ' was successfully listed!')
    except:
        db.session.rollback()
        # TODO: on unsuccessful db insert, flash an error instead.
        flash('An error occurred. Venue ' + data.name + ' could not be listed.')
        return
    finally:
        db.session.close()
        # see: http://flask.pocoo.org/docs/1.0/patterns/flashing/
    return render_template('pages/home.html')


@app.route('/venues/<venue_id>', methods=['DELETE'])
def delete_venue(venue_id):
    # TODO: Complete this endpoint for taking a venue_id, and using
    # SQLAlchemy ORM to delete a record. Handle cases where the session commit could fail.

    # BONUS CHALLENGE: Implement a button to delete a Venue on a Venue Page, have it so that
    # clicking that button delete it from the db then redirect the user to the homepage
    return None


#  Artists
#  ----------------------------------------------------------------
@app.route('/artists')
def artists():
    # TODO: replace with real data returned from querying the database
    try:
        data = Artist.query.add_columns(Artist.id, Artist.name).all()
    except:
        flash('Oops! Something went wrong')
        return
    return render_template('pages/artists.html', artists=data)


@app.route('/artists/search', methods=['POST'])
def search_artists():
    # TODO: implement search on artists with partial string search. Ensure it is case-insensitive.
    # seach for "A" should return "Guns N Petals", "Matt Quevado", and "The Wild Sax Band".
    # search for "band" should return "The Wild Sax Band".
    try:
        search_term = request.form.get('search_term')
        data = Artist.query.filter(Artist.name.ilike('%' + search_term + '%')).all()

        response = {
            "count": len(data),
            "data": data
        }
    except:
        flash('Oops! Something went wrong')
    finally:
        db.session.close()
    return render_template('pages/search_artists.html', results=response,
                           search_term=request.form.get('search_term', ''))


@app.route('/artists/<int:artist_id>')
def show_artist(artist_id):
    # shows the venue page with the given venue_id
    # TODO: replace with real venue data from the venues table, using venue_id
    try:
        result_artist = Artist.query.filter(Artist.id == artist_id).first()
        result_past_shows_count = Show.query.join(Artist, Artist.id == Show.artist_id).filter(
            Show.start_time < date.today()).count()
        result_upcoming_shows_count = Show.query.join(Artist, Artist.id == Show.artist_id).filter(
            Show.start_time > date.today()).count()

        result_past_shows = Show.query.join(Artist, Artist.id == Show.venue_id) \
            .join(Venue, Venue.id == Show.artist_id) \
            .add_columns(Venue.id.label('venue_id'), Venue.name.label('venue_name'),
                         Venue.image_link.label('venue_image_link'), Show.start_time) \
            .filter(Show.start_time < date.today()).all()

        result_upcoming_shows = Show.query.join(Artist, Artist.id == Show.venue_id) \
            .join(Venue, Venue.id == Show.artist_id) \
            .add_columns(Venue.id.label('venue_id'), Venue.name.label('venue_name'),
                         Venue.image_link.label('venue_image_link'), Show.start_time) \
            .filter(Show.start_time > date.today()).all()

        data = {
            "id": result_artist.id,
            "name": result_artist.name,
            "genres": result_artist.genres,
            "city": result_artist.city,
            "state": result_artist.state,
            "phone": result_artist.phone,
            "website": result_artist.website,
            "facebook_link": result_artist.facebook_link,
            "seeking_venue": result_artist.seeking_venue,
            "seeking_description": result_artist.seeking_description,
            "image_link": result_artist.image_link,
            "past_shows": result_past_shows,
            "upcoming_shows": result_upcoming_shows,
            "past_shows_count": result_past_shows_count,
            "upcoming_shows_count": result_upcoming_shows_count,
        }
    except:
        flash('Oops! Something went wrong')
        return
    finally:
        db.session.close()
    return render_template('pages/show_artist.html', artist=data)


#  Update
#  ----------------------------------------------------------------
@app.route('/artists/<int:artist_id>/edit', methods=['GET'])
def edit_artist(artist_id):
    form = ArtistForm()
    artist = {
        "id": 4,
        "name": "Guns N Petals",
        "genres": ["Rock n Roll"],
        "city": "San Francisco",
        "state": "CA",
        "phone": "326-123-5000",
        "website": "https://www.gunsnpetalsband.com",
        "facebook_link": "https://www.facebook.com/GunsNPetals",
        "seeking_venue": True,
        "seeking_description": "Looking for shows to perform at in the San Francisco Bay Area!",
        "image_link": "https://images.unsplash.com/photo-1549213783-8284d0336c4f?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=300&q=80"
    }
    # TODO: populate form with fields from artist with ID <artist_id>
    return render_template('forms/edit_artist.html', form=form, artist=artist)


@app.route('/artists/<int:artist_id>/edit', methods=['POST'])
def edit_artist_submission(artist_id):
    # TODO: take values from the form submitted, and update existing
    # artist record with ID <artist_id> using the new attributes

    return redirect(url_for('show_artist', artist_id=artist_id))


@app.route('/venues/<int:venue_id>/edit', methods=['GET'])
def edit_venue(venue_id):
    form = VenueForm()
    venue = {
        "id": 1,
        "name": "The Musical Hop",
        "genres": ["Jazz", "Reggae", "Swing", "Classical", "Folk"],
        "address": "1015 Folsom Street",
        "city": "San Francisco",
        "state": "CA",
        "phone": "123-123-1234",
        "website": "https://www.themusicalhop.com",
        "facebook_link": "https://www.facebook.com/TheMusicalHop",
        "seeking_talent": True,
        "seeking_description": "We are on the lookout for a local artist to play every two weeks. Please call us.",
        "image_link": "https://images.unsplash.com/photo-1543900694-133f37abaaa5?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=400&q=60"
    }
    # TODO: populate form with values from venue with ID <venue_id>
    return render_template('forms/edit_venue.html', form=form, venue=venue)


@app.route('/venues/<int:venue_id>/edit', methods=['POST'])
def edit_venue_submission(venue_id):
    # TODO: take values from the form submitted, and update existing
    # venue record with ID <venue_id> using the new attributes
    return redirect(url_for('show_venue', venue_id=venue_id))


#  Create Artist
#  ----------------------------------------------------------------

@app.route('/artists/create', methods=['GET'])
def create_artist_form():
    form = ArtistForm()
    return render_template('forms/new_artist.html', form=form)


@app.route('/artists/create', methods=['POST'])
def create_artist_submission():
    try:
        name = request.form.get('name')
        city = request.form.get('city')
        state = request.form.get('state')
        genres = request.form.getlist('genres')
        phone = request.form.get('phone')
        image_link = request.form.get('image_link')
        facebook_link = request.form.get('facebook_link')
        website = request.form.get('website')
        seeking_venue = request.form.get('seeking_venue')
        seeking_description = request.form.get('seeking_description')

        # TODO: insert form data as a new Venue record in the db, instead
        data = Artist(
            name=name,
            city=city,
            state=state,
            genres=genres,
            phone=phone,
            image_link=image_link,
            facebook_link=facebook_link,
            website=website,
            seeking_venue=seeking_venue,
            seeking_description=seeking_description
        )
        # TODO: modify data to be the data object returned from db insertion
        db.session.add(data)
        db.session.commit()
        # on successful db insert, flash success
        flash('Artist ' + request.form['name'] + ' was successfully listed!')
    except:
        db.session.rollback()
        # TODO: on unsuccessful db insert, flash an error instead.
        flash('An error occurred. Artist ' + data.name + ' could not be listed.')
        return
    finally:
        db.session.close()
    return render_template('pages/home.html')


#  Shows
#  ----------------------------------------------------------------

@app.route('/shows')
def shows():
    # displays list of shows at /shows
    # TODO: replace with real venues data.
    #       num_shows should be aggregated based on number of upcoming shows per venue.
    try:
        data = Show.query.join(Venue, Venue.id == Show.venue_id) \
            .join(Artist, Artist.id == Show.artist_id) \
            .add_columns(Show.venue_id, Venue.name.label('venue_name') \
                         , Show.artist_id, Artist.name.label('artist_name'), Artist.image_link, Show.start_time)
    except:
        flash('Oops! Something went wrong')
        return
    finally:
        db.session.close()
    return render_template('pages/shows.html', shows=data)


@app.route('/shows/create')
def create_shows():
    # renders form. do not touch.
    form = ShowForm()
    return render_template('forms/new_show.html', form=form)


@app.route('/shows/create', methods=['POST'])
def create_show_submission():
    try:
        venue_id = request.form.get('venue_id')
        artist_id = request.form.get('artist_id')
        start_time = request.form.get('start_time')

        # TODO: insert form data as a new Venue record in the db, instead
        data = Show(
            venue_id=venue_id,
            artist_id=artist_id,
            start_time=start_time
        )
        # TODO: modify data to be the data object returned from db insertion
        db.session.add(data)
        db.session.commit()
        # on successful db insert, flash success
        flash('Show was successfully listed!')
    except:
        db.session.rollback()
        # TODO: on unsuccessful db insert, flash an error instead.
        flash('An error occurred. Show could not be listed.')
    finally:
        db.session.close()
    return render_template('pages/home.html')


@app.errorhandler(404)
def not_found_error(error):
    return render_template('errors/404.html'), 404


@app.errorhandler(500)
def server_error(error):
    return render_template('errors/500.html'), 500


if not app.debug:
    file_handler = FileHandler('error.log')
    file_handler.setFormatter(
        Formatter('%(asctime)s %(levelname)s: %(message)s [in %(pathname)s:%(lineno)d]')
    )
    app.logger.setLevel(logging.INFO)
    file_handler.setLevel(logging.INFO)
    app.logger.addHandler(file_handler)
    app.logger.info('errors')

# ----------------------------------------------------------------------------#
# Launch.
# ----------------------------------------------------------------------------#

# Default port:
if __name__ == '__main__':
    app.run()

# Or specify port manually:
'''
if __name__ == '__main__':
    port = int(os.environ.get('PORT', 5000))
    app.run(host='0.0.0.0', port=port)
'''