sun-horizon/dist/src/cache.js

Horizon profile and sun path form a lat lng point

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
const folderSize = require('folder-size');
const findRemoveSync = require('find-remove');
const fs = require('fs');
const TileSet = require('node-hgt').TileSet;
const ImagicoElevationDownloader = require('node-hgt').ImagicoElevationDownloader;
let CACHE_DIRECTORY = 'sun-horizon-data/';
let tiles = {};
function init(cacheDirectory) {
    if (cacheDirectory)
        CACHE_DIRECTORY = cacheDirectory;
    createDataFolderIfNotExists();
    const tileDownloader = new ImagicoElevationDownloader(CACHE_DIRECTORY);
    tiles = new TileSet(CACHE_DIRECTORY, { downloader: tileDownloader });
}
exports.init = init;
function getTiles() {
    return tiles;
}
exports.getTiles = getTiles;
function getCacheData() {
    createDataFolderIfNotExists();
    return new Promise((resole, reject) => {
        folderSize(CACHE_DIRECTORY, { ignoreHidden: true }, function (err, data) {
            if (err)
                reject(err);
            resole(data.hgt || { files: 0, bytes: 0 });
        });
    });
}
exports.getCacheData = getCacheData;
function cleanCache() {
    return __awaiter(this, void 0, void 0, function* () {
        createDataFolderIfNotExists();
        const files = (yield getCacheData()).files;
        if (files <= 0)
            return 0;
        return Object.keys(findRemoveSync(CACHE_DIRECTORY, { extensions: ['.hgt'] })).length;
    });
}
exports.cleanCache = cleanCache;
function createDataFolderIfNotExists() {
    if (!fs.existsSync(CACHE_DIRECTORY)) {
        fs.mkdirSync(CACHE_DIRECTORY);
        fs.writeFileSync(CACHE_DIRECTORY + '.gitignore', '*.hgt');
    }
}
exports.createDataFolderIfNotExists = createDataFolderIfNotExists;