arso-rainfall-intensity/src/arso-http.ts

!!!Only for slovenia!!! Provides simple api for fetching radar images of rainfall intensity and parsing from pixels and converting pixel coordinates to pairs of latitude and longitude or vice versa.

import axios from 'axios';
import { ILatestRadarSnapshotsTimelineHttpResult } from './types';

class RadarDataSnapshot {
    height: number;
    width: number;
    dateTime: Date;
    dateCompact: string;
    timeCompact: string;
    radarImageUrlPath: string;
    mode: string;

    constructor(arsoResultItem: ILatestRadarSnapshotsTimelineHttpResult) {
        this.height = Number(arsoResultItem.height);
        this.width = Number(arsoResultItem.width);
        this.dateTime = new Date(arsoResultItem.valid);
        this.dateCompact = arsoResultItem.date;
        this.timeCompact = arsoResultItem.hhmm;
        this.radarImageUrlPath = `http://meteo.arso.gov.si${arsoResultItem.path}`;
        this.mode = arsoResultItem.mode;
    }

    async fetchRadarImageBuffer(): Promise<Buffer> {
        const imgBuffer = await axios.get<ArrayBuffer>(this.radarImageUrlPath, {
            responseType: "arraybuffer"
        });
        return Buffer.from(imgBuffer.data);
    }
}

export async function fetchLatestRadarSnapshotsTimeline(): Promise<RadarDataSnapshot[]> {
    const apiUrl = 'http://meteo.arso.gov.si/uploads/probase/www/nowcast/inca/inca_si0zm_data.json?prod=si0zm';
    const response = await axios.get<ILatestRadarSnapshotsTimelineHttpResult[]>(apiUrl, {
        responseType: 'json'
    });
    return response.data.map(item => new RadarDataSnapshot(item));
}

export async function fetchLatestRadarHailProbabilitySnapshotsTimeline(): Promise<RadarDataSnapshot[]> {
    const apiUrl = 'http://meteo.arso.gov.si/uploads/probase/www/nowcast/inca/inca_hp_data.json?prod=hp';
    const response = await axios.get<ILatestRadarSnapshotsTimelineHttpResult[]>(apiUrl, {
        responseType: 'json'
    });
    return response.data.map(item => new RadarDataSnapshot(item));
}