add(backend): handle content url

paste/app.py

@@ -2,10 +2,12 @@
 
 from flask import Flask
 
+from paste import config
 from paste.home import home
 
 app = Flask(__name__)
 
+app.config.update(TESTING=config.TESTING, SECRET_KEY=config.SECRET_KEY)
 
 app.register_blueprint(home)
 

paste/config.py

@@ -6,3 +6,5 @@ REDIS_PORT = getenv("PASTE_REDIS_HOST") or "6379"
 REDIS_USER = getenv("PASTE_REDIS_USER") or None
 REDIS_PASSWORD = getenv("PASTE_REDIS_PASSWORD") or None
 URL_LENGTH = getenv("PASTE_URL_LENGTH") or 4
+TESTING = getenv("PASTE_TESTING") or True
+SECRET_KEY = getenv("PASTE_SECRET_KEY") or "verysecure"

paste/db.py

@@ -11,7 +11,9 @@ def connect_redis() -> Redis:
     Connect to redis.
     :return: Redis connection object.
     """
-    return Redis(host=config.REDIS_HOST, port=config.REDIS_PORT)
+    return Redis(
+        host=config.REDIS_HOST, port=config.REDIS_PORT, db=0, decode_responses=True
+    )
 
 
 def check_content_exist(key: str) -> bool:
@@ -32,7 +34,7 @@ def insert_content_db(url_id: str, expiration: int, content: str) -> None:
     :param content: Paste content
     :return: None
     """
-    if check_content_exist(url_id):
+    if not check_content_exist(url_id):
         db = connect_redis()
         db.set(url_id, content)
         db.expire(url_id, expiration)

paste/home.py

@@ -1,5 +1,13 @@
 """Manage view and create paste."""
-from flask import Blueprint, redirect, render_template, request, url_for
+from flask import (
+    Blueprint,
+    flash,
+    redirect,
+    render_template,
+    request,
+    url_for,
+)
+from werkzeug import Response
 
 from paste.db import check_content_exist, connect_redis, insert_content_db
 from paste.utils import generate_id
@@ -7,7 +15,7 @@ from paste.utils import generate_id
 home = Blueprint("home", __name__, url_prefix="/")
 
 
-def create_paste(content: str) -> None:
+def create_paste(content: str) -> str:
     """
     Create paste in DB.
     :param content: Content to add in redis.
@@ -17,6 +25,7 @@ def create_paste(content: str) -> None:
     while check_content_exist(url_id):
         url_id = generate_id()
     insert_content_db(url_id, 3600, content)
+    return url_id
 
 
 @home.route("/")
@@ -29,13 +38,14 @@ def homepage() -> str:
 
 
 @home.route("/create", methods=["POST"])
-def create() -> str:
+def create() -> Response:
     """
     Receive POST data for create paste.
     :return: Redirection to homapage.
     """
     content = request.form.get("content")
-    create_paste(content)
+    url_id = create_paste(content)
+    flash(f"Paste available at {request.host_url}{url_id}")
     return redirect(url_for("home.homepage"))
 
 
@@ -47,5 +57,5 @@ def get_content(path: str) -> str:
     :return: Paste content.
     """
     db = connect_redis()
-    print(db.get(path))
-    return "hello"
+    flash(db.get(path))
+    return render_template("content.html.j2")

paste/templates/content.html.j2

@@ -0,0 +1,5 @@
+{% with messages = get_flashed_messages() %}
+    {% if messages %}
+        <p>{{ messages[0] }}</p>
+    {% endif %}
+{% endwith %}

paste/templates/home.html.j2

@@ -2,3 +2,8 @@
     <input name="content">
     <button>Create</button>
 </form>
+{% with messages = get_flashed_messages() %}
+    {% if messages %}
+        <p>{{ messages[0] }}</p>
+    {% endif %}
+{% endwith %}