Add support for time ranged requests

src/cli/index.ts

@@ -12,6 +12,8 @@ export const run = () => {
     .version('0.0.1')
     .requiredOption('-c, --config <file>', 'sets the path to the YAML config file')
     .requiredOption('-d, --date <date>', 'sets the date of measurement intended to be fetched (in YYYY-MM-DD format)')
+    .requiredOption('-i, --interval <value>', 'sets the time interval between consecutive requests of measurement for time ranges (in ms)', "2000")
+    .option('-t, --to <date>', 'sets the end date of measurement intended to be fetched (in YYYY-MM-DD format). If provided, the -d option acts as a start date.')
     .parse()
     .opts<CLIOptions>();
 
@@ -22,13 +24,28 @@ export const run = () => {
   }
 
   const date = dayjs(options.date, 'YYYY-MM-DD');
+  const to = options.to && dayjs(options.to, 'YYYY-MM-DD');
   
   if (!date.isValid) {
     throw new Error(`Invalid date: ${options.date}, expected date to be of 'YYYY-MM-DD' format`);
   }
 
+  if (to && !to.isValid) {
+    throw new Error(`Invalid 'to' date: ${options.to}, expected date to be of 'YYYY-MM-DD' format`);
+  }
+
+  const interval = parseInt(options.interval);
+
+
   const tauron = new Tauron(config.tauron);
   const fetcher = new Fetcher(config, tauron);
 
-  fetcher.fetch(date);
+  if (!to) {
+    fetcher.fetch(date);
+    return
+  }
+
+  if(to) {
+    fetcher.fetchRange(date, to, interval);
+  }
 }

src/fetcher/index.ts

@@ -20,7 +20,7 @@ export class Fetcher {
    * @param date - the measurement date (note, that 'todays' date may not be available at the time being when request is made)
    * @returns the measurement data
    */
-  async fetch(date: Dayjs): Promise<Measurement> {
+  async fetch(date: Dayjs): Promise<Measurement> {  
     const normalizedDate = date.startOf('day');
     console.log(`Fetching measurements for: ${normalizedDate.format("YYYY-MM-DD")}`);
 
@@ -44,8 +44,9 @@ export class Fetcher {
     return measurement;
   }
 
-  async fetchRange(from: Dayjs, to: Dayjs, requestInterval = 1000) {  
+  async fetchRange(from: Dayjs, to: Dayjs, requestInterval = 1000) {
-    for(let date = from; date.isBefore(to); date = date.add(1, 'day')) {
+    console.log(`Fetching data from time range: ${from.format("MM.DD.YYYY")} - ${to.format("MM.DD.YYYY")}`)
+    for(let date = from; date.isBefore(to.add(1, 'day')); date = date.add(1, 'day')) {
       this.fetch(date);
       await sleep(requestInterval + gaussianRandom(200, 2000));
     }

src/types/cli.ts

@@ -1,4 +1,6 @@
 export type CLIOptions = {
   config: string;
   date: string;
+  interval: string;
+  to?: string;
 }