simple website made

backend/main.py

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+from fastapi import FastAPI, HTTPException
+from pydantic import BaseModel
+import psycopg2
+import psycopg2.extras
+import os
+from typing import Optional
+
+app = FastAPI(title="Notes API")
+
+def get_db():
+    return psycopg2.connect(
+        host=os.environ["DB_HOST"],
+        port=int(os.environ.get("DB_PORT", "5432")),
+        database=os.environ["DB_NAME"],
+        user=os.environ["DB_USER"],
+        password=os.environ["DB_PASSWORD"],
+    )
+
+@app.on_event("startup")
+def startup():
+    conn = get_db()
+    cur = conn.cursor()
+    cur.execute("""
+        CREATE TABLE IF NOT EXISTS notes (
+            id SERIAL PRIMARY KEY,
+            title VARCHAR(255) NOT NULL,
+            content TEXT DEFAULT '',
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+        )
+    """)
+    conn.commit()
+    cur.close()
+    conn.close()
+
+class NoteCreate(BaseModel):
+    title: str
+    content: Optional[str] = ""
+
+@app.get("/health")
+def health():
+    return {"status": "ok"}
+
+@app.get("/notes")
+def get_notes():
+    conn = get_db()
+    cur = conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor)
+    cur.execute("SELECT * FROM notes ORDER BY created_at DESC")
+    notes = list(cur.fetchall())
+    cur.close()
+    conn.close()
+    return notes
+
+@app.post("/notes")
+def create_note(note: NoteCreate):
+    conn = get_db()
+    cur = conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor)
+    cur.execute(
+        "INSERT INTO notes (title, content) VALUES (%s, %s) RETURNING *",
+        (note.title, note.content),
+    )
+    new_note = dict(cur.fetchone())
+    conn.commit()
+    cur.close()
+    conn.close()
+    return new_note
+
+@app.delete("/notes/{note_id}")
+def delete_note(note_id: int):
+    conn = get_db()
+    cur = conn.cursor()
+    cur.execute("DELETE FROM notes WHERE id = %s", (note_id,))
+    if cur.rowcount == 0:
+        cur.close()
+        conn.close()
+        raise HTTPException(status_code=404, detail="Note not found")
+    conn.commit()
+    cur.close()
+    conn.close()
+    return {"deleted": note_id}