# @reng/pollen

## Imports

```ts
import { getPollen } from 'kody:@reng/pollen'
import { getPollen as getPollenNamed } from 'kody:@reng/pollen/getPollen'
```

Root export re-exports `getPollen` and offers a callable default with the same `{ location?, latitude?, longitude?, hours? }` input.

## Smoke tests

```ts
import { getPollen } from 'kody:@reng/pollen'

const berlin = await getPollen({ location: 'Berlin', hours: 12 })
// expect coverage === 'available' (Europe) and levels keys among alder/birch/grass/mugwort/olive/ragweed

const shanghai = await getPollen({ location: 'Shanghai', hours: 6 })
// expect coverage === 'unavailable' and empty levels (CAMS pollen is Europe-focused)
```

App smoke:

```ts
import { kody } from 'kody:runtime'
await kody.packageAppFetch({ kody_id: 'pollen', path: '/' })
// expect status 200 and HTML body

await kody.packageAppFetch({
  kody_id: 'pollen',
  path: '/api/getPollen',
  method: 'POST',
  headers: { 'content-type': 'application/json' },
  body: JSON.stringify({ location: 'Berlin', hours: 6 }),
})
```

## Edge cases

- Missing both `location` and lat/lon throws.
- Unknown place name throws (`Place not found`).
- Outside Europe (e.g. Shanghai): API returns null pollen series → `coverage: "unavailable"`, empty `levels`, explanatory `summary`.
- Labels (`none`/`low`/`moderate`/`high`/`very_high`) are a simple grains/m³ heuristic, not clinical thresholds.
- Hosted app links must use `packageContext.hostedUrl` + `appBasePath`.
- Zero secrets; plain `fetch` only.