Polish upload drafts, restore availability and offline API docs

tests/schema-contract.json

@@ -89,6 +89,11 @@
         "type": "boolean",
         "title": "Model Verified",
         "default": false
+      },
+      "can_restore": {
+        "type": "boolean",
+        "title": "Can Restore",
+        "default": false
       }
     },
     "type": "object",

tests/test_api.py

@@ -345,3 +345,57 @@ def test_schema_contract(client):
     schemas = client.get("/openapi.json").json()["components"]["schemas"]
     expected = json.loads((Path(__file__).parent / "schema-contract.json").read_text())
     assert {key: schemas[key] for key in expected} == expected
+
+
+def test_preview_is_draft_until_saved(client, service):
+    out = BytesIO()
+    Image.new("RGB", (50, 50), "red").save(out, "PNG")
+    preview = client.post(
+        "/api/v1/preview", files={"file": ("draft.png", out.getvalue(), "image/png")}
+    ).json()
+    assert preview["name"] == "draft.jpg"
+    assert not any(
+        x["asset_id"] == preview["asset_id"]
+        for x in client.get("/api/v1/assets").json()
+    )
+    saved = client.post(
+        "/api/v1/devices/living-room/upload",
+        json={"type": "image", "asset_id": preview["asset_id"]},
+    )
+    assert saved.status_code == 202
+    service.process_one()
+    assert any(
+        x["asset_id"] == preview["asset_id"]
+        for x in client.get("/api/v1/assets").json()
+    )
+    assert service.registry.get("living-room").client.uploads == 0
+
+
+def test_restore_availability(client, service):
+    assert client.get("/api/v1/devices/living-room").json()["can_restore"] is False
+    client.post(
+        "/api/v1/display", json={"content": {"type": "template", "template": "quote"}}
+    )
+    service.process_one()
+    assert client.get("/api/v1/devices/living-room").json()["can_restore"] is True
+
+
+def test_template_configuration_reload(client, service):
+    assert (
+        client.put(
+            "/api/v1/templates/quote/config", json={"data": {"quote": "Saved words"}}
+        ).status_code
+        == 200
+    )
+    assert (
+        client.get("/api/v1/templates/quote").json()["defaults"]["quote"]
+        == "Saved words"
+    )
+
+
+def test_docs_offline_resources(client):
+    html = client.get("/docs").text
+    assert "/ui/swagger-ui-bundle.js" in html
+    assert "cdn.jsdelivr" not in html
+    assert client.get("/ui/swagger-ui-bundle.js").status_code == 200
+    assert client.get("/ui/swagger-ui.css").status_code == 200