feat: Offline monitor #23
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WalkthroughThe recent updates focus on enhancing the application's resilience to offline scenarios. By introducing an Changes
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Review Status
Actionable comments generated: 2
Configuration used: CodeRabbit UI
Files selected for processing (7)
- src/Router.tsx (2 hunks)
- src/contexts/Api/index.tsx (2 hunks)
- src/controllers/OnlineStatusController/index.tsx (1 hunks)
- src/controllers/OnlineStatusController/types.ts (1 hunks)
- src/library/Offline/Wrapper.ts (1 hunks)
- src/library/Offline/index.tsx (1 hunks)
- src/types.ts (2 hunks)
Files skipped from review due to trivial changes (1)
- src/controllers/OnlineStatusController/types.ts
Additional comments: 8
src/controllers/OnlineStatusController/index.tsx (2)
- 6-13: The implementation of
initOnlineEventsmethod correctly sets up event listeners for 'offline' and 'online' events on thewindowobject and dispatches a custom event with the online status. However, consider adding error handling for potential issues during event listener setup or dispatching to enhance robustness.- 16-24: The
dispatchEventmethod correctly creates and dispatches a custom event named 'online-status' with the online status detail. This method is well-implemented and follows best practices for custom event dispatching. No changes are necessary.src/types.ts (2)
- 5-5: The import of
OnlineStatusEventfromcontrollers/OnlineStatusController/typesis correctly done. This ensures that the custom event type is available for use in the application.- 16-16: The addition of the
OnlineStatusEventcustom event to theDocumentEventMapinterface is correctly implemented. This extension of the interface allows for strong typing of custom events, enhancing code maintainability and developer experience.src/Router.tsx (2)
- 12-12: The import of the
Offlinecomponent fromlibrary/Offlineis correctly done. This ensures that the component is available for use within theRoutercomponent.- 31-31: The placement of the
<Offline />component within theRoutercomponent's JSX structure is appropriate. This ensures that the offline prompt is rendered at a global level, making it accessible throughout the application. Good job on integrating this feature.src/contexts/Api/index.tsx (2)
- 13-13: The import of
OnlineStatusControllerfromcontrollers/OnlineStatusControlleris correctly done. This ensures that the controller is available for initializing online/offline events within the API context.- 154-157: The initialization of online/offline events using
OnlineStatusController.initOnlineEvents()within theuseEffecthook is correctly implemented. This ensures that the application starts listening for online/offline events as soon as the API context is initialized. Good job on integrating this feature to enhance the application's resilience to connectivity issues.
| export const Wrapper = styled.div` | ||
| background: var(--accent-color-primary); | ||
| border: 0.5px solid var(--border-primary-color); | ||
| /* TODO: make theme variable + dark mode support */ | ||
| box-shadow: | ||
| 0 2px 3px -1px rgba(0, 0, 0, 0.05), | ||
| 0 1px 4px -2px rgba(0, 0, 0, 0.05); | ||
| position: fixed; | ||
| bottom: 0.5rem; | ||
| right: 0.5rem; | ||
| z-index: 999; | ||
| padding: 0.6rem 0.9rem; | ||
| border-radius: 0.6rem; | ||
| display: flex; | ||
|
|
||
| > h3, | ||
| svg { | ||
| color: var(--text-color-invert); | ||
| } | ||
|
|
||
| > svg { | ||
| margin-right: 0.5rem; | ||
| } | ||
| `; |
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The Wrapper styled component is correctly defined with appropriate styling for the offline notification. However, there's a TODO comment regarding making theme variables and adding dark mode support. It's important to address this to ensure consistency and accessibility across different themes.
Would you like me to help with implementing theme variables and dark mode support?
| export const Offline = () => { | ||
| // Whether the app is offline. | ||
| const [offline, setOffline] = useState<boolean>(false); | ||
|
|
||
| // Handle incoming online status updates. | ||
| const handleOnlineStatus = (e: Event): void => { | ||
| if (isCustomEvent(e)) { | ||
| const { online } = e.detail; | ||
| setOffline(!online); | ||
| } | ||
| }; | ||
|
|
||
| // Listen for online status updates. | ||
| const documentRef = useRef<Document>(document); | ||
| useEventListener('online-status', handleOnlineStatus, documentRef); | ||
|
|
||
| if (!offline) { | ||
| return null; | ||
| } | ||
| return ( | ||
| <Wrapper> | ||
| <FontAwesomeIcon icon={faWarning} /> | ||
| <h3>Connection appears to be offline</h3> | ||
| </Wrapper> | ||
| ); | ||
| }; |
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The Offline component is well-implemented, with clear state management and event listener setup for handling online status updates. The use of useState for tracking the offline status and useEventListener for listening to 'online-status' events is appropriate. The conditional rendering based on the offline status is also correctly done. However, consider adding a cleanup function for the event listener to prevent potential memory leaks in long-running applications.
+ useEffect(() => {
+ return () => documentRef.current.removeEventListener('online-status', handleOnlineStatus);
+ }, []);Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation.
| export const Offline = () => { | |
| // Whether the app is offline. | |
| const [offline, setOffline] = useState<boolean>(false); | |
| // Handle incoming online status updates. | |
| const handleOnlineStatus = (e: Event): void => { | |
| if (isCustomEvent(e)) { | |
| const { online } = e.detail; | |
| setOffline(!online); | |
| } | |
| }; | |
| // Listen for online status updates. | |
| const documentRef = useRef<Document>(document); | |
| useEventListener('online-status', handleOnlineStatus, documentRef); | |
| if (!offline) { | |
| return null; | |
| } | |
| return ( | |
| <Wrapper> | |
| <FontAwesomeIcon icon={faWarning} /> | |
| <h3>Connection appears to be offline</h3> | |
| </Wrapper> | |
| ); | |
| }; | |
| export const Offline = () => { | |
| // Whether the app is offline. | |
| const [offline, setOffline] = useState<boolean>(false); | |
| // Handle incoming online status updates. | |
| const handleOnlineStatus = (e: Event): void => { | |
| if (isCustomEvent(e)) { | |
| const { online } = e.detail; | |
| setOffline(!online); | |
| } | |
| }; | |
| // Listen for online status updates. | |
| const documentRef = useRef<Document>(document); | |
| useEventListener('online-status', handleOnlineStatus, documentRef); | |
| useEffect(() => { | |
| return () => documentRef.current.removeEventListener('online-status', handleOnlineStatus); | |
| }, []); | |
| if (!offline) { | |
| return null; | |
| } | |
| return ( | |
| <Wrapper> | |
| <FontAwesomeIcon icon={faWarning} /> | |
| <h3>Connection appears to be offline</h3> | |
| </Wrapper> | |
| ); | |
| }; |
Listens to online and offline events, displaying a prompt if the the connection appears to be offline.
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