add delete endpoint to remove a short link

Author: qorexdevs

README.md

@@ -133,6 +133,14 @@ Returns a QR code image encoding the short URL. Useful for sharing links in prin
 PNG by default; pass `fmt=svg` for a crisp, scalable vector you can drop into print or the web.
 `scale` sets the pixel size of each module (1-40, default 10) and `border` the quiet zone width (0-20, default 4).
 
+### Delete
+
+```http
+DELETE /api/links/{code}  ->  204 No Content
+```
+
+Removes a short link by its code or custom alias. Returns 404 if nothing matches. The code lookup is case-insensitive, same as the other endpoints.
+
 ### Redirect
 
 ```http

app/routers/api.py

@@ -168,6 +168,14 @@ async def get_qr_code(
     headers = {"Cache-Control": "public, max-age=86400"}
     return StreamingResponse(buf, media_type=media_type, headers=headers)
 
+@router.delete("/api/links/{code}", status_code=204)
+async def delete_link(code: str, session: AsyncSession = Depends(get_session)):
+    link = await find_link(session, code)
+    if not link:
+        raise HTTPException(status_code=404, detail="Link not found")
+    await session.delete(link)
+    await session.commit()
+
 @router.get("/{code}")
 async def redirect_to_url(code: str, session: AsyncSession = Depends(get_session)):
     link = await find_link(session, code)

tests/test_api.py

@@ -662,3 +662,31 @@ async def test_stats_page_custom_alias_lookup_case_insensitive(client):
     assert res.status_code == 200
     assert "/Gh-Link" in res.text
 
+
+
+@pytest.mark.asyncio
+async def test_delete_link(client):
+    res = await client.post("/api/shorten", json={"url": "https://example.com"})
+    code = res.json()["short_code"]
+
+    res = await client.delete(f"/api/links/{code}")
+    assert res.status_code == 204
+
+    res = await client.get(f"/{code}", follow_redirects=False)
+    assert res.status_code == 404
+
+
+@pytest.mark.asyncio
+async def test_delete_link_case_insensitive(client):
+    with patch("app.routers.api.generate_short_code", return_value="AbC123"):
+        res = await client.post("/api/shorten", json={"url": "https://example.com"})
+    assert res.status_code == 201
+
+    res = await client.delete("/api/links/abc123")
+    assert res.status_code == 204
+
+
+@pytest.mark.asyncio
+async def test_delete_link_not_found(client):
+    res = await client.delete("/api/links/nope")
+    assert res.status_code == 404