55 lines
2.4 KiB
TypeScript
55 lines
2.4 KiB
TypeScript
|
import { apiHost } from '../consts'
|
||
|
|
import { fetchBuffer, fetchJson } from '../helpers/fetch'
|
||
|
|
import { getFakeHourPrecipitation, isPrecipitation } from './draw/precipitation'
|
||
|
|
import { getFakeWindDirection, isWindSpeed } from './draw/windDirection'
|
||
|
|
import { GribMessage } from './interfaces'
|
||
|
|
import { fetchWindData, isCalculatedWindDirection } from './draw/windDirection'
|
||
|
|
import { fetchHourPrecipitationData, isCalculatedHourPrecipitation } from './draw/precipitation'
|
||
|
|
|
||
|
|
export function fetchGribList(): Promise<string[]> {
|
||
|
|
return fetchJson(`${apiHost}/api/show/grib-list`)
|
||
|
|
.then((fileList: string[]) => {
|
||
|
|
return fileList.sort((a: string, b: string) => a < b ? 1 : -1)
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
export function fetchGribListStructure(): Promise<GribMessage[]> {
|
||
|
|
return fetchJson(`${apiHost}/api/show/grib-all-structure`)
|
||
|
|
.then((gribList: GribMessage[]) => {
|
||
|
|
return [
|
||
|
|
...gribList,
|
||
|
|
...gribList.filter(isWindSpeed).map(getFakeWindDirection),
|
||
|
|
...gribList.filter(isPrecipitation).map(getFakeHourPrecipitation),
|
||
|
|
].sort((a, b) => a.title > b.title ? 1 : -1)
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
export function fetchGribBinaries(
|
||
|
|
grib: GribMessage,
|
||
|
|
gribList: GribMessage[],
|
||
|
|
) {
|
||
|
|
const fileName = `harmonie_${grib.time.referenceTime}_${grib.time.forecastTime}.grib`
|
||
|
|
const bitmaskSection = grib.sections.find(section => section.id === 6)
|
||
|
|
const binarySection = grib.sections.find(section => section.id === 7)
|
||
|
|
if (!bitmaskSection || !binarySection) throw new Error('Grib does not have binary or bitmap section')
|
||
|
|
|
||
|
|
const bitmaskOffset = bitmaskSection.offset + 6
|
||
|
|
const bitmaskLength = bitmaskSection.size - 6
|
||
|
|
const bitmaskPromise = bitmaskSection.size > 6
|
||
|
|
? fetchBuffer(`${apiHost}/api/grib/binary-chunk/${bitmaskOffset}/${bitmaskLength}/${fileName}`).then(b=>[b])
|
||
|
|
: Promise.resolve([])
|
||
|
|
|
||
|
|
const binaryOffset = binarySection.offset + 5
|
||
|
|
const binaryLength = binarySection.size - 5
|
||
|
|
let fetchPromise: Promise<[GribMessage[], ArrayBuffer[], ArrayBuffer[]]> = Promise.all([
|
||
|
|
Promise.resolve([grib]),
|
||
|
|
fetchBuffer(`${apiHost}/api/grib/binary-chunk/${binaryOffset}/${binaryLength}/${fileName}`).then(b=>[b]),
|
||
|
|
bitmaskPromise,
|
||
|
|
])
|
||
|
|
|
||
|
|
if(isCalculatedWindDirection(grib)) fetchPromise = fetchWindData(grib, gribList)
|
||
|
|
if(isCalculatedHourPrecipitation(grib)) fetchPromise = fetchHourPrecipitationData(grib, gribList)
|
||
|
|
|
||
|
|
return fetchPromise
|
||
|
|
}
|