( NEW ) Menambahkan diagram UML dan update README

README.md

@@ -41,3 +41,4 @@ Open a browser and go to URL
 http://<IP>:5000                            => Welcome
 http://<IP>:5000/how%20are%20you            => I am good, how about you?
 ```
+- Diagram UML ditambahkan ke folder docs/uml

app.py

@@ -1,14 +1,80 @@
-import os
-from flask import Flask
+from flask import Flask, render_template, request, redirect, url_for, session
+
 app = Flask(__name__)
+app.secret_key = 'rahasia'  # Digunakan untuk menyimpan session login
+
+# Akun pengguna (dummy)
+USER_CREDENTIALS = {
+    'admin': 'admin'
+}
 
+# ========================
+# ROUTE: Halaman Login
+# ========================
 @app.route("/")
-def main():
-    return "Welcome!"
+def index():
+    return render_template("login.html")
+
+# ========================
+# ROUTE: Proses Login
+# ========================
+@app.route("/login", methods=["POST"])
+def login():
+    username = request.form.get("username")
+    password = request.form.get("password")
+
+    if username in USER_CREDENTIALS and USER_CREDENTIALS[username] == password:
+        session['user'] = username
+        return redirect(url_for('dashboard'))
+    else:
+        return """
+        <h3>Login gagal!</h3>
+        <p>Username atau password salah.</p>
+        <a href='/'>Kembali ke login</a>
+        """
+
+# ========================
+# ROUTE: Dashboard
+# ========================
+@app.route("/dashboard")
+def dashboard():
+    if 'user' not in session:
+        return redirect(url_for('index'))
+    return render_template("dashboard.html")
+
+# ========================
+# ROUTE: Tambah Data
+# ========================
+@app.route("/create", methods=["GET", "POST"])
+def create():
+    if 'user' not in session:
+        return redirect(url_for('index'))
+
+    if request.method == "POST":
+        nama = request.form.get("nama")
+        jumlah = request.form.get("jumlah")
+
+        if nama and jumlah:
+            print(f"Data disimpan: {nama}, jumlah: {jumlah}")  # Log ke terminal
+            return render_template("success.html")
+        else:
+            return """
+            <h3>Data tidak lengkap!</h3>
+            <a href='/create'>Coba lagi</a>
+            """
+
+    return render_template("create.html")
 
-@app.route('/how are you')
-def hello():
-    return 'I am good, how about you?'
+# ========================
+# ROUTE: Logout
+# ========================
+@app.route("/logout")
+def logout():
+    session.pop('user', None)
+    return render_template("logout.html")
 
+# ========================
+# RUN APP
+# ========================
 if __name__ == "__main__":
     app.run(host="0.0.0.0", port=8080)

docs/uml/class_diagram.puml

@@ -0,0 +1,15 @@
+@startuml
+class User {
+  -username: str
+  -password: str
+  +login(): bool
+}
+
+class Item {
+  -name: str
+  -description: str
+  +create(): void
+}
+
+User "1" --> "*" Item : creates
+@enduml

docs/uml/sequence_create_item.puml

@@ -0,0 +1,19 @@
+@startuml
+actor Admin
+participant WebBrowser
+participant FlaskApp
+participant ItemService
+participant Database
+
+Admin -> WebBrowser : buka halaman create item
+WebBrowser -> FlaskApp : GET /item/create
+FlaskApp -> WebBrowser : tampilkan form
+
+Admin -> WebBrowser : submit data item
+WebBrowser -> FlaskApp : POST /item/create
+FlaskApp -> ItemService : validasi data
+ItemService -> Database : simpan item
+Database --> ItemService : sukses
+ItemService --> FlaskApp : status OK
+FlaskApp -> WebBrowser : tampilkan pesan sukses
+@enduml

docs/uml/sequence_login.puml

@@ -0,0 +1,19 @@
+@startuml
+actor User
+participant WebBrowser
+participant FlaskApp
+participant AuthService
+participant Database
+
+User -> WebBrowser : buka halaman login
+WebBrowser -> FlaskApp : GET /login
+FlaskApp -> WebBrowser : tampilkan form
+
+User -> WebBrowser : isi username dan password
+WebBrowser -> FlaskApp : POST /validateLogin
+FlaskApp -> AuthService : validasi login
+AuthService -> Database : ambil data user
+Database --> AuthService : data user
+AuthService --> FlaskApp : hasil validasi
+FlaskApp -> WebBrowser : redirect ke dashboard / error
+@enduml