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app.py
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app.py
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import time, base64, os, urllib, imghdr, random
import StringIO
from flask import Flask, render_template, jsonify, g, request, send_from_directory
from utils import sql
from utils import ranking
from slugify import slugify
from configs import config
from PIL import Image
import json
app = Flask(__name__, static_url_path='')
success = [
{
"error": False,
"data": "request completed"
}
]
def defaultDatetimeJSONDump(obj):
import calendar, datetime
if isinstance(obj, datetime.datetime):
if obj.utcoffset() is not None:
obj = obj - obj.utcoffset()
millis = int(
calendar.timegm(obj.timetuple()) * 1000 +
obj.microsecond / 1000
)
return millis
@app.before_request
def before_request():
if request.method == "GET":
topics = sql.selectTopics()
mapped_topics = list(map(lambda x: {"name": x.name, "id": str(x.id)}, topics))
g.topics = mapped_topics
@app.route("/", methods=["GET"])
def frontpageView():
r = request.args.get('r')
posts = sql.selectPosts(20, True)
try:
mapped_posts = list(map(lambda x: {
"name": x.name,
"slug": x.slug,
"relative_url": x.relative_url,
"score": str(int(x.score)),
"id": str(x.id),
"created_timestamp": str(x.created_timestamp)
}, posts))
try:
if r == "new":
mapped_posts = ranking.orderNewPosts(mapped_posts)
else:
mapped_posts = ranking.orderTopPosts(mapped_posts)
except Exception as e:
print e
except Exception as e:
mapped_posts = list()
if r == "new":
r = "New"
else:
r = "Top"
return render_template("frontpage.html", topics=json.dumps(g.topics), posts=json.dumps(mapped_posts), r=r)
@app.route("/c/<topic_name>", methods=["GET"])
def topicView(topic_name):
r = request.args.get('r')
topic = sql.selectTopicByName(topic_name)
posts = sql.selectPostsByTopic(topic.id)
try:
mapped_posts = list(map(lambda x: {
"name": x.name,
"slug": x.slug,
"relative_url": x.relative_url,
"score": str(int(x.score)),
"id": str(x.id),
"created_timestamp": str(x.created_timestamp)
}, posts))
try:
if r == "new":
mapped_posts = ranking.orderNewPosts(mapped_posts)
else:
mapped_posts = ranking.orderTopPosts(mapped_posts)
except Exception as e:
print e
except Exception as e:
mapped_posts = list()
return render_template("topic.html", topics=json.dumps(g.topics), current_topic=json.dumps({"name": topic.name, "id": str(topic.id)}), posts=json.dumps(mapped_posts))
@app.route("/c/<topic_name>/<post_slug>", methods=["GET"])
def postView(topic_name, post_slug):
r = request.args.get('r')
topic = sql.selectTopicByName(topic_name)
post = sql.selectPostBySlug(post_slug)
comments = sql.selectCommentsByPost(post.id)
try:
mapped_comments = list(map(lambda x: {
"text": x.text,
"author": x.author,
"replied_id": str(x.replied_id),
"score": str(int(x.score)),
"relative_url": x.relative_url,
"id": str(x.id),
"created_timestamp": str(x.created_timestamp)
}, comments))
try:
if r == "new":
mapped_comments = ranking.orderNewComments(mapped_comments)
else:
mapped_comments = ranking.orderTopComments(mapped_comments)
except Exception as e:
print e
except:
mapped_comments = list()
return render_template("post.html", topics=json.dumps(g.topics), current_topic=json.dumps({"name": topic.name, "id": str(topic.id)}), current_post=json.dumps({"id": post.id, "name": post.name, "slug": post.slug, "relative_url": post.relative_url, "score": post.score, "created_timestamp": post.created_timestamp, "comments":mapped_comments}, default=defaultDatetimeJSONDump))
@app.route("/createTopic", methods=["POST"])
def createTopic():
name = request.form['name']
if not name:
error = [
{
"error": True,
"data": "No \"name\" sent"
}
]
return jsonify(results=error)
sql.upsertTopic(name, 0)
return jsonify(results=success)
@app.route("/<topic_name>/createPost", methods=["POST"])
def createPost(topic_name):
url = request.form['url']
name = request.form['name']
email = request.form['email']
topic_id = request.form['topic_id']
post_file_name = "post.png"
count = sql.getPostCount(topic_id)
filename = config.dirs["pic_dir"]+topic_name+"/"+str(count)+"/"+post_file_name
if len(name) > 140:
error = [
{
"error": True,
"data": "Title should not be more than 140 characters"
}
]
return jsonify(results=error)
try:
if not os.path.exists(os.path.dirname(filename)):
os.makedirs(os.path.dirname(filename))
with open(filename, "w") as text_file:
try:
url_contents = urllib.urlopen(url).read()
except Exception as e:
error = [
{
"error": True,
"data": "URL could not be read"
}
]
return jsonify(results=error)
text_file.write(url_contents)
os.chmod(filename, 0o774)
try:
im = Image.open(StringIO.StringIO(url_contents))
except Exception as e:
error = [
{
"error": True,
"data": "You have to post an image url"
}
]
return jsonify(results=error)
except Exception as e:
print e
error = [
{
"error": True,
"data": "File could not be saved"
}
]
return jsonify(results=error)
if not name or not url:
error = [
{
"error": True,
"data": "All fields must be set"
}
]
return jsonify(results=error)
slug = slugify(name)
if sql.checkPostSlug(slug):
slug = slug+str(count)
sql.upsertPost(topic_id, name, slug, email, filename, 0)
return jsonify(results=success)
@app.route("/<topic_name>/<post_slug>/createComment", methods=["POST"])
def createComment(topic_name, post_slug):
try:
text = request.form['text']
author = request.form['author']
replied_id = request.form['replied_id']
post_id = request.form['post_id']
edit_data = request.form['edit_data']
except KeyError as e:
error = [
{
"error": True,
"data": "Not all data sent, key error"
}
]
return jsonify(results=error)
if not text or not post_id or not replied_id:
error = [
{
"error": True,
"data": "Not all data sent"
}
]
return jsonify(results=error)
edit_data = edit_data.replace("data:image/png;base64,", "")
edit_data = edit_data.replace(" ", "+")
base64_edit_data = base64.b64decode(edit_data)
count = sql.getCommentCount(post_id)
file_name = str(count)+".png"
print file_name
try:
filename = config.dirs["pic_dir"]+topic_name+"/"+post_id+"/"+file_name
if not os.path.exists(os.path.dirname(filename)):
os.makedirs(os.path.dirname(filename))
with open(filename, "w") as text_file:
text_file.write(base64_edit_data)
os.chmod(filename, 0o774)
except Exception as e:
print e
error = [
{
"error": True,
"data": "Could not create image file, sorry"
}
]
return jsonify(results=error)
sql.upsertComment(text, author, post_id, replied_id, filename, 0)
success[0]["relative_url"] = filename
return jsonify(results=success)
@app.route("/<topic_name>/<post_slug>/createUpvote", methods=["PUT"])
def createPostUpvote(topic_name, post_slug):
post = sql.selectPostBySlug(post_slug)
sql.incrementPostScore(post.id)
return jsonify(results=success)
@app.route("/<topic_name>/<post_slug>/createDownvote", methods=["PUT"])
def createPostDownvote(topic_name, post_slug):
post = sql.selectPostBySlug(post_slug)
sql.decrementPostScore(post.id)
return jsonify(results=success)
@app.route("/<topic_name>/<post_slug>/<comment_id>/createUpvote", methods=["PUT"])
def createCommentUpvote(topic_name, post_slug, comment_id):
sql.incrementCommentScore(comment_id)
return jsonify(results=success)
@app.route("/<topic_name>/<post_slug>/<comment_id>/createDownvote", methods=["PUT"])
def createCommentDownvote(topic_name, post_slug, comment_id):
sql.incrementCommentScore(comment_id)
return jsonify(results=success)
@app.route('/pics/<path:path>')
def send_pics(path):
return send_from_directory('pics', path)
@app.route('/static/<path:path>')
def send_static(path):
return send_from_directory('static', path)
@app.teardown_appcontext
def shutdown_session(exception=None):
sql.Session.remove()
@app.errorhandler(Exception)
def all_exception_handler(error):
print error
if request.method == "GET":
topic = random.choice(g.topics)
return render_template("error.html", error_message="We messed up :( here's a random page <a href=\"/c/"+topic["name"]+"\">"+topic["name"]+"</a>")
else:
return error
if __name__ == "__main__":
app.run(debug=config.server["debug"], host=config.server["host"], port=config.server["port"])