rm-hull / maps / 22363793926

37%

Build Type

push

github

Committed by web-flow

Commit Message

refactor: fetch crime data using latest available date (#1055)

* refactor: fetch crime data using latest available date

Replaces hardcoded date strings with a dynamic lookup of the latest
available crime data from the API. This ensures the map always defaults
to the most recent dataset provided by the source.

*   Added `useLastUpdated` hook to retrieve the latest data timestamp.
*   Updated `StreetLevelCrimeLayer` to initialize the month filter based
    on the API response.
*   Refactored `Legend` to dynamically generate a 12-month selection
    range relative to the latest data point.
*   Added an `enabled` flag to the crime query to prevent unnecessary
    requests before the date is known.

```mermaid
sequenceDiagram
    participant L as StreetLevelCrimeLayer
    participant U as useLastUpdated
    participant Q as useStreetLevelCrimes
    participant S as API Service

    L->>U: Request latest data date
    U->>S: GET /crime-last-updated
    S-->>U: Return latest month (e.g. "2024-11")
    U-->>L: Update state with date
    L->>Q: Trigger query for latest month
    Q->>S: GET /crimes-street?date=2024-11
    S-->>Q: Return crime incidents
    Q-->>L: Render markers
```

* fix: preserve crime month state on update

Ensure the street-level crime month is only initialized with the
`lastUpdated` value if no month is currently selected. This prevents
losing the current filter state when the metadata timestamp changes.

* fix: allow rendering street crime layer without data

The `StreetLevelCrimeLayer` previously returned `null` if `data` was
missing. This change allows the component to continue rendering as long
as `lastUpdated` is valid, preventing the layer from unmounting
prematurely when data is empty or loading.

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