htammen · January 21, 2022 16:52
diff --git a/holidays.ts b/holidays.ts
 import dateHolidays from 'https://cdn.skypack.dev/date-holidays';
 import { ld } from 'https://x.nest.land/deno-lodash@1.0.0/mod.ts'
 import { parse } from "https://deno.land/std/flags/mod.ts"

 /**
 * returns a command line argument by name from the args array
 */
 const getArg = function(argName: string, args: any[]): string {
 	//@ts-ignore
 	const arg = ld.find(args, (arg: string[]) => arg[0] === argName)
 	return arg ? arg[1]: null
 }

 /**
 * Helper method that logs a msg if debug flag is set
 */
 const logDebug=function(msg: any) {
  if(bDebug) {
    console.log(msg)
  }
 }
 // parse the args array into an array of 2-dimensionals array.
 // Each array element is an array with 2 members: 0-argument, 1-argument value
 const args = ld.toPairs(parse(Deno.args))
 //console.log(args)
 // save the command line parameters in variables.
 const bHelp = getArg('help', args)
 const bDebug = getArg('debug', args)
 const year = getArg('year', args) || getArg('_', args)[0] || new Date().getFullYear()
 const country = getArg('country', args) || getArg('_', args)[1] || "DE"
 const state = getArg('state', args) || getArg('_', args)[2] || "NI"
 const bCountries = getArg('countries', args)
 const bStates = getArg('states', args)
 const bQuery = getArg('query', args)

 logDebug(args)
 logDebug(year)

 class HolidayViewer {
  private hd: dateHolidays

  constructor() {
    this.hd = new dateHolidays(country, state, null, null);
  }


  processInput() {
    if(bCountries) {
      this.showCountries()
    } else if(bStates) {
      this.showStates()
    } else if(bQuery) {
      this.showQueryResults()
    } else {
      this.showHolidays()
    }
  }

  showQueryResults() {
    let queryResult = this.hd.query(country)
    console.log(queryResult)
  }

  showCountries() {
    let countries = this.hd.getCountries()
    console.log(countries)
  }

  showStates() {
    let states = this.hd.getStates(country)
    console.log(states);
  }

  showHolidays() {
    let holidays:Array<any> = this.hd.getHolidays(year, "de");

    let publics:Array<{date:string, name:string}> = holidays.filter(holiday => {return holiday.type === "public"})
                  .map(entry => {return {date: entry.date, name: entry.name}});
    console.log(JSON.stringify(publics));
    // Deno.stdout.writeSync(new TextEncoder().encode(JSON.stringify(publics)));
  }

 }

 if(bHelp) {
  console.log('Usage: holidays <year country state> [options]') 
  console.log('Usage: hoidays [options]') 
  console.log(`
 Returns the holidays for a year, country and state.
 ex: holidays 2022 DE NI -> this returns the holidays for lower saxony in germany

 Options
 --year:      year for which to show the holidays
 --country:   country for which you want to see the date-holidays. Get a list of countries with holidays --countries
 --countries: get a list of supported countries
 --states:    get a list of available states for a country. Needs --country to be set. Get a list of states with e.g. holidays --states --country DE
 --state:     state of the country for which you want to see the holidays
 --help:      show this help screen
 --debug:     show debug information
 `)
  Deno.exit(0);
 }

 new HolidayViewer().processInput();
	import dateHolidays from 'https://cdn.skypack.dev/date-holidays';
	import { ld } from 'https://x.nest.land/deno-lodash@1.0.0/mod.ts'
	import { parse } from "https://deno.land/std/flags/mod.ts"

	/**
	* returns a command line argument by name from the args array
	*/
	const getArg = function(argName: string, args: any[]): string {
	//@ts-ignore
	const arg = ld.find(args, (arg: string[]) => arg[0] === argName)
	return arg ? arg[1]: null
	}

	/**
	* Helper method that logs a msg if debug flag is set
	*/
	const logDebug=function(msg: any) {
	if(bDebug) {
	console.log(msg)
	}
	}
	// parse the args array into an array of 2-dimensionals array.
	// Each array element is an array with 2 members: 0-argument, 1-argument value
	const args = ld.toPairs(parse(Deno.args))
	//console.log(args)
	// save the command line parameters in variables.
	const bHelp = getArg('help', args)
	const bDebug = getArg('debug', args)
	const year = getArg('year', args) \|\| getArg('_', args)[0] \|\| new Date().getFullYear()
	const country = getArg('country', args) \|\| getArg('_', args)[1] \|\| "DE"
	const state = getArg('state', args) \|\| getArg('_', args)[2] \|\| "NI"
	const bCountries = getArg('countries', args)
	const bStates = getArg('states', args)
	const bQuery = getArg('query', args)

	logDebug(args)
	logDebug(year)

	class HolidayViewer {
	private hd: dateHolidays

	constructor() {
	this.hd = new dateHolidays(country, state, null, null);
	}


	processInput() {
	if(bCountries) {
	this.showCountries()
	} else if(bStates) {
	this.showStates()
	} else if(bQuery) {
	this.showQueryResults()
	} else {
	this.showHolidays()
	}
	}

	showQueryResults() {
	let queryResult = this.hd.query(country)
	console.log(queryResult)
	}

	showCountries() {
	let countries = this.hd.getCountries()
	console.log(countries)
	}

	showStates() {
	let states = this.hd.getStates(country)
	console.log(states);
	}

	showHolidays() {
	let holidays:Array<any> = this.hd.getHolidays(year, "de");

	let publics:Array<{date:string, name:string}> = holidays.filter(holiday => {return holiday.type === "public"})
	.map(entry => {return {date: entry.date, name: entry.name}});
	console.log(JSON.stringify(publics));
	// Deno.stdout.writeSync(new TextEncoder().encode(JSON.stringify(publics)));
	}

	}

	if(bHelp) {
	console.log('Usage: holidays <year country state> [options]')
	console.log('Usage: hoidays [options]')
	console.log(`
	Returns the holidays for a year, country and state.
	ex: holidays 2022 DE NI -> this returns the holidays for lower saxony in germany

	Options
	--year: year for which to show the holidays
	--country: country for which you want to see the date-holidays. Get a list of countries with holidays --countries
	--countries: get a list of supported countries
	--states: get a list of available states for a country. Needs --country to be set. Get a list of states with e.g. holidays --states --country DE
	--state: state of the country for which you want to see the holidays
	--help: show this help screen
	--debug: show debug information
	`)
	Deno.exit(0);
	}

	new HolidayViewer().processInput();