#!/usr/bin/env swift;
/******************************************************************************
 * This program demonstrates basic string functions.
 * 
 * Copyright © 2020 Richard Lesh.  All rights reserved.
 *****************************************************************************/

import Foundation
import Utils

func main() -> Void {
	let ALPHABET:String = "abcdefghijklmnopqrstuvwxyzabc"
	let GREEK_ALPHABET:String = "αβγδεζηθικλμνξοπρσςτυφχψωαβγ"
	let EMOJI:String = "😃😇🥰🤪🤑😴🤒🥵🥶🤯🥳😎😥😱😡🤬💀👽🤖😺🙈🙉🙊😃😇🥰"

	print("Length: " + String(ALPHABET.count))
	print("charAt(17): " + Utils.substr(ALPHABET, 17, 18))
	print("codePointAt(17): " + String(Utils.codepoint_at(ALPHABET, 17)))
	print("substr(23, 26): " + Utils.substr(ALPHABET, 23, 26))
	print("prefix(6): " + ALPHABET.prefix(6))
	print("right_tail(6): " + Utils.substr(ALPHABET, 6))
	print("suffix(6): " + ALPHABET.suffix(6))
	print("find(\'def\'): " + String(ALPHABET.indexOf("def")))
	print("find(\'def\') is not found: " + String((ALPHABET.indexOf("def") == -1)))
	print("find(\'bug\'): " + String(ALPHABET.indexOf("bug")))
	print("find(\'bug\') is not found: " + String((ALPHABET.indexOf("bug") == -1)))
	print("rfind(\'abc\'): " + String(ALPHABET.lastIndexOf("abc")))
	print("rfind(\'abc\') is not found: " + String((ALPHABET.lastIndexOf("abc") == -1)))
	print("rfind(\'bug\'): " + String(ALPHABET.lastIndexOf("bug")))
	print("rfind(\'bug\') is not found: " + String((ALPHABET.lastIndexOf("bug") == -1)))

	print("Length: " + String(GREEK_ALPHABET.count))
	print("charAt(17): " + Utils.substr(GREEK_ALPHABET, 17, 18))
	print("codePointAt(17): " + String(Utils.codepoint_at(GREEK_ALPHABET, 17)))
	print("substr(23, 26): " + Utils.substr(GREEK_ALPHABET, 23, 26))
	print("prefix(6): " + GREEK_ALPHABET.prefix(6))
	print("right_tail(6): " + Utils.substr(GREEK_ALPHABET, 6))
	print("suffix(6): " + GREEK_ALPHABET.suffix(6))
	print("find(\'δεζ\'): " + String(GREEK_ALPHABET.indexOf("δεζ")))
	print("find(\'δεζ\') is not found: " + String((GREEK_ALPHABET.indexOf("δεζ") == -1)))
	print("find(\'bug\'): " + String(GREEK_ALPHABET.indexOf("bug")))
	print("find(\'bug\') is not found: " + String((GREEK_ALPHABET.indexOf("bug") == -1)))
	print("rfind(\'αβγ\'): " + String(GREEK_ALPHABET.lastIndexOf("αβγ")))
	print("rfind(\'αβγ\') is not found: " + String((GREEK_ALPHABET.lastIndexOf("αβγ") == -1)))
	print("rfind(\'bug\'): " + String(GREEK_ALPHABET.lastIndexOf("bug")))
	print("rfind(\'bug\') is not found: " + String((GREEK_ALPHABET.lastIndexOf("bug") == -1)))

	print("Length: " + String(EMOJI.count))
	print("charAt(16): " + Utils.substr(EMOJI, 16, 17))
	print("codePointAt(16): " + String(Utils.codepoint_at(EMOJI, 16)))
	print("substr(20, 24): " + Utils.substr(EMOJI, 20, 24))
	print("prefix(6): " + EMOJI.prefix(6))
	print("right_tail(6): " + Utils.substr(EMOJI, 6))
	print("suffix(6): " + EMOJI.suffix(6))
	print("find(\'😱😡🤬\'): " + String(EMOJI.indexOf("😱😡🤬")))
	print("find(\'😱😡🤬\') is not found: " + String((EMOJI.indexOf("😱😡🤬") == -1)))
	print("find(\'bug\'): " + String(EMOJI.indexOf("bug")))
	print("find(\'bug\') is not found: " + String((EMOJI.indexOf("bug") == -1)))
	print("rfind(\'😃😇🥰\'): " + String(EMOJI.lastIndexOf("😃😇🥰")))
	print("rfind(\'😃😇🥰\') is not found: " + String((EMOJI.lastIndexOf("😃😇🥰") == -1)))
	print("rfind(\'bug\'): " + String(EMOJI.lastIndexOf("bug")))
	print("rfind(\'bug\') is not found: " + String((EMOJI.lastIndexOf("bug") == -1)))
	exit(EXIT_SUCCESS)
}
main()