Add app.py

app.py

@@ -0,0 +1,50 @@
+import os
+
+from dotenv import load_dotenv
+from flask import Flask, redirect, render_template, request, session, url_for
+
+load_dotenv()
+
+app = Flask(__name__)
+app.secret_key = os.environ["SECRET_KEY"]
+
+SITE_PASSWORD = os.environ["SITE_PASSWORD"]
+
+
+@app.after_request
+def add_noindex_header(response):
+    response.headers["X-Robots-Tag"] = "noindex, nofollow"
+    return response
+
+
+@app.route("/")
+def index():
+    if not session.get("authenticated"):
+        return redirect(url_for("login"))
+    return render_template("dashboard.html")
+
+
+@app.route("/login", methods=["GET", "POST"])
+def login():
+    if session.get("authenticated"):
+        return redirect(url_for("index"))
+
+    error = None
+    if request.method == "POST":
+        if request.form.get("password") == SITE_PASSWORD:
+            session["authenticated"] = True
+            return redirect(url_for("index"))
+        error = "Wrong password."
+
+    return render_template("login.html", error=error)
+
+
+@app.route("/logout")
+def logout():
+    session.clear()
+    return redirect(url_for("login"))
+
+
+@app.route("/robots.txt")
+def robots():
+    return "User-agent: *\nDisallow: /\n", 200, {"Content-Type": "text/plain"}