describe("Zotero.Utilities", function() {
	describe("cleanAuthor", function() {
		it('should parse author names', function() {
			for(let useComma of [false, true]) {
				for(let first_expected of [["First", "First"],
				                           ["First Middle", "First Middle"],
				                           ["F. R. S.", "F. R. S."],
				                           ["F.R.S.", "F. R. S."],
				                           ["F R S", "F. R. S."],
				                           ["FRS", "F. R. S."]]) {
					let [first, expected] = first_expected;
					let str = useComma ? "Last, "+first : first+" Last";
					let author = Zotero.Utilities.cleanAuthor(str, "author", useComma);
					assert.equal(author.firstName, expected);
					assert.equal(author.lastName, "Last");
				}
			}
		});
		
		it('should not parse words starting with symbols as last name', function() {
			let author = Zotero.Utilities.cleanAuthor('First Middle Last [CountryName]', false);
			assert.equal(author.firstName, 'First Middle');
			// Brackets at the beginning and end of a string get removed for strings
			// such as [First Last] -> Last, First.
			// The current output is not ideal, but better than "[CountryName, First Middle Last"
			assert.equal(author.lastName, 'Last [CountryName');
		});
		
		it('should parse names starting with unicode characters correctly', function() {
			let author = Zotero.Utilities.cleanAuthor('Ąžuolas Žolynas', false);
			assert.equal(author.firstName, 'Ąžuolas');
			assert.equal(author.lastName, 'Žolynas');
		})
	});
	
	
	describe("#isHTTPURL()", function () {
		it("should return true for HTTP URL", function () {
			assert.isTrue(Zotero.Utilities.isHTTPURL('http://example.com'));
		});
		
		it("should return true for HTTPS URL", function () {
			assert.isTrue(Zotero.Utilities.isHTTPURL('https://example.com'));
		});
		
		it("should return false for plausible HTTP URL if allowNoScheme not provided", function () {
			assert.isFalse(Zotero.Utilities.isHTTPURL('example.com'));
		});
		
		it("should return false for plausible HTTP URL if allowNoScheme is true", function () {
			assert.isTrue(Zotero.Utilities.isHTTPURL('example.com', true));
		});
		
		it("should return false for file URL", function () {
			assert.isFalse(Zotero.Utilities.isHTTPURL('file:///c:/path/to/file.txt'));
		});
		
		it("should return false for mailto URLs in allowNoScheme mode", function () {
			assert.isFalse(Zotero.Utilities.isHTTPURL('mailto:foo@example.com', true));
		});
		
		it("should return false for zotero: URL", function () {
			assert.isFalse(Zotero.Utilities.isHTTPURL('zotero://select/library/items/AAAAAAAA'));
		});
	});
	
	
	describe("#cleanDOI()", function () {
		var cleanDOI = Zotero.Utilities.cleanDOI;
		var doi = '10.1088/1748-9326/11/4/048002';
		var shortDOI = '10/aabbe';
		
		it("should parse a DOI", function () {
			assert.equal(cleanDOI(`${doi}`), doi);
		});
		
		it("should parse a short DOI", function () {
			assert.equal(cleanDOI(`${shortDOI}`), shortDOI);
		});
		
		it("should parse a DOI at the end of a sentence", function () {
			assert.equal(cleanDOI(`Foo bar ${doi}. Foo bar`), doi);
		});
		
		// FIXME
		it.skip("should parse a DOI in parentheses", function () {
			assert.equal(cleanDOI(`Foo bar (${doi}) foo bar`), doi);
		});
		
		// FIXME
		it.skip("should parse a DOI in brackets", function () {
			assert.equal(cleanDOI(`Foo bar [${doi}] foo bar`), doi);
		});
	});
	
	
	describe("#cleanISBN()", function() {
		let cleanISBN = Zotero.Utilities.cleanISBN;
		it("should return false for non-ISBN string", function() {
			assert.isFalse(cleanISBN(''), 'returned false for empty string');
			assert.isFalse(cleanISBN('Random String 123'), 'returned false for non-ISBN string');
			assert.isFalse(cleanISBN('1234X67890'), 'returned false for ISBN10-looking string with X in the middle');
			assert.isFalse(cleanISBN('987123456789X'), 'returned false for ISBN13-looking string with X as check-digit');
		});
		it("should return false for invalid ISBN string", function() {
			assert.isFalse(cleanISBN('1234567890'), 'returned false for invalid ISBN10');
			assert.isFalse(cleanISBN('9871234567890'), 'returned false for invalid ISBN13');
		});
		it("should return valid ISBN string given clean, valid ISBN string", function() {
			assert.equal(cleanISBN('123456789X'), '123456789X', 'passed through valid ISBN10');
			assert.equal(cleanISBN('123456789x'), '123456789X', 'passed through valid ISBN10 with lower case input');
			assert.equal(cleanISBN('9781234567897'), '9781234567897', 'passed through valid ISBN13');
			assert.equal(cleanISBN('9791843123391'), '9791843123391', 'passed through valid ISBN13 in 979 range');
		});
		it("should strip off internal characters in ISBN string", function() {
			let ignoredChars = '\x2D\xAD\u2010\u2011\u2012\u2013\u2014\u2015\u2043\u2212' // Dashes
				+ ' \xA0\r\n\t\x0B\x0C\u1680\u2000\u2001\u2002\u2003\u2004\u2005' // Spaces
				+ '\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF';
			for (let i=0; i<ignoredChars.length; i++) {
				let charCode = '\\u' + Zotero.Utilities.lpad(ignoredChars.charCodeAt(i).toString(16).toUpperCase(), '0', 4);
				assert.equal(cleanISBN('9781' + ignoredChars.charAt(i) + '234567897'), '9781234567897', 'stripped off ' + charCode);
			}
			assert.equal(cleanISBN('9781' + ignoredChars + '234567897'), '9781234567897', 'stripped off all ignored characters');
			
			let isbnChars = ignoredChars + '1234567890';
			for (let i=1; i<1327; i++) { // More common characters through Cyrillic letters
				let c = String.fromCharCode(i);
				if (isbnChars.indexOf(c) != -1) continue;
				
				let charCode = '\\u' + Zotero.Utilities.lpad(i.toString(16).toUpperCase(), '0', 4);
				assert.isFalse(cleanISBN('9781' + c + '234567897'), 'did not ignore internal character ' + charCode);
			}
		});
		it("should strip off surrounding non-ISBN string", function() {
			assert.equal(cleanISBN('ISBN 9781234567897'), '9781234567897', 'stripped off preceding string (with space)');
			assert.equal(cleanISBN('ISBN:9781234567897'), '9781234567897', 'stripped off preceding string (without space)');
			assert.equal(cleanISBN('9781234567897 ISBN13'), '9781234567897', 'stripped off trailing string (with space)');
			assert.equal(cleanISBN('9781234567897(ISBN13)'), '9781234567897', 'stripped off trailing string (without space)');
			assert.equal(cleanISBN('ISBN13:9781234567897 (print)'), '9781234567897', 'stripped off surrounding string');
			assert.equal(cleanISBN('978 9781234567 897'), '9781234567897', 'stripped off pseudo-ISBN prefix');
		});
		it("should return the first valid ISBN from a string with multiple ISBNs", function() {
			assert.equal(cleanISBN('9781234567897, 9791843123391'), '9781234567897', 'returned first valid ISBN13 from list of valid ISBN13s');
			assert.equal(cleanISBN('123456789X, 0199535922'), '123456789X', 'returned first valid ISBN13 from list of valid ISBN13s');
			assert.equal(cleanISBN('123456789X 9781234567897'), '123456789X', 'returned first valid ISBN (10) from a list of mixed-length ISBNs');
			assert.equal(cleanISBN('9781234567897 123456789X'), '9781234567897', 'returned first valid ISBN (13) from a list of mixed-length ISBNs');
			assert.equal(cleanISBN('1234567890 9781234567897'), '9781234567897', 'returned first valid ISBN in the list with valid and invalid ISBNs');
		});
		it("should not return an ISBN from a middle of a longer number string", function() {
			assert.isFalse(cleanISBN('1239781234567897'), 'did not ignore number prefix');
			assert.isFalse(cleanISBN('9781234567897123'), 'did not ignore number suffix');
			assert.isFalse(cleanISBN('1239781234567897123'), 'did not ignore surrounding numbers');
		});
		it("should return valid ISBN from a dirty string", function() {
			assert.equal(cleanISBN('<b>ISBN</b>:978-1 234\xA056789 - 7(print)\n<b>ISBN-10</b>:123\x2D456789X (print)'), '9781234567897');
		});
		it("should not validate check digit when dontValidate is set", function() {
			assert.equal(cleanISBN('9781234567890', true), '9781234567890', 'plain ISBN13 with wrong check digit');
			assert.equal(cleanISBN('1234567890', true), '1234567890', 'plain ISBN10 with wrong check digit');
			assert.equal(cleanISBN('1234567890 9781234567897', true), '1234567890', 'returned first ISBN10 (invalid) in the list with valid and invalid ISBNs');
			assert.equal(cleanISBN('9781234567890 123456789X', true), '9781234567890', 'returned first ISBN13 (invalid) in the list with valid and invalid ISBNs');
		});
		it("should not pass non-ISBN strings if dontValidate is set", function() {
			assert.isFalse(cleanISBN('', true), 'returned false for empty string');
			assert.isFalse(cleanISBN('Random String 123', true), 'returned false for non-ISBN string');
			assert.isFalse(cleanISBN('1234X67890', true), 'returned false for ISBN10-looking string with X in the middle');
			assert.isFalse(cleanISBN('123456789Y', true), 'returned false for ISBN10-looking string with Y as check digit');
			assert.isFalse(cleanISBN('987123456789X', true), 'returned false for ISBN13-looking string with X as check-digit');
			assert.isFalse(cleanISBN('1239781234567897', true), 'did not ignore number prefix');
			assert.isFalse(cleanISBN('9781234567897123', true), 'did not ignore number suffix');
			assert.isFalse(cleanISBN('1239781234567897123', true), 'did not ignore surrounding numbers');
		});
	});
	describe("toISBN13", function() {
		let toISBN13 = Zotero.Utilities.toISBN13;
		it("should throw on invalid ISBN", function() {
			let errorMsg = 'ISBN not found in "',
				invalidStrings = ['', 'random string', '1234567890123'];
			for (let i=0; i<invalidStrings.length; i++) {
				assert.throws(toISBN13.bind(null,invalidStrings[i]), errorMsg + invalidStrings[i] + '"');
			}
		});
		it("should convert to ISBN13", function() {
			assert.equal(toISBN13('123456789X'), '9781234567897', 'converts ISBN10 to ISBN13');
			assert.equal(toISBN13('9781234567897'), '9781234567897', 'ISBN13 stays the same');
			assert.equal(toISBN13('9791843123391'), '9791843123391', '979 ISBN13 stays the same');
			assert.equal(toISBN13('978-1234567897'), '9781234567897', 'accepts hyphenated ISBN');
		});
		it("should ignore invalid check digit", function() {
			assert.equal(toISBN13('1234567890'), '9781234567897', 'converts ISBN10 with invalid check digit to ISBN13');
			assert.equal(toISBN13('9781234567890'), '9781234567897', 'corrects invalid ISBN13 check digit');
		});
	});
	describe("cleanISSN", function() {
		let cleanISSN = Zotero.Utilities.cleanISSN;
		it("should return false for non-ISSN string", function() {
			assert.isFalse(cleanISSN(''), 'returned false for empty string');
			assert.isFalse(cleanISSN('Random String 123'), 'returned false for non-ISSN string');
			assert.isFalse(cleanISSN('123X-5679'), 'returned false for ISSN-looking string with X in the middle');
		});
		it("should return false for invalid ISSN string", function() {
			assert.isFalse(cleanISSN('12345678'), 'returned false for invalid ISSN');
			assert.isFalse(cleanISSN('1234-5678'), 'returned false for invalid ISSN with hyphen');
		});
		it("should return valid ISSN string given clean, valid ISSN string", function() {
			assert.equal(cleanISSN('1234-5679'), '1234-5679', 'passed through valid ISSN');
			assert.equal(cleanISSN('2090-424X'), '2090-424X', 'passed through valid ISSN with X check digit');
		});
		it("should hyphenate valid ISSN", function() {
			assert.equal(cleanISSN('12345679'), '1234-5679', 'hyphenated valid ISSN');
		});
		it("should strip off internal characters in ISSN string", function() {
			let ignoredChars = '\x2D\xAD\u2010\u2011\u2012\u2013\u2014\u2015\u2043\u2212' // Dashes
				+ ' \xA0\r\n\t\x0B\x0C\u1680\u2000\u2001\u2002\u2003\u2004\u2005' // Spaces
				+ '\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF';
			for (let i=0; i<ignoredChars.length; i++) {
				let charCode = '\\u' + Zotero.Utilities.lpad(ignoredChars.charCodeAt(i).toString(16).toUpperCase(), '0', 4);
				assert.equal(cleanISSN('1' + ignoredChars.charAt(i) + '2345679'), '1234-5679', 'stripped off ' + charCode);
			}
			assert.equal(cleanISSN('1' + ignoredChars + '2345679'), '1234-5679', 'stripped off all ignored characters');
			
			let isbnChars = ignoredChars + '1234567890';
			for (let i=1; i<1327; i++) { // More common characters through Cyrillic letters
				let c = String.fromCharCode(i);
				if (isbnChars.indexOf(c) != -1) continue;
				
				let charCode = '\\u' + Zotero.Utilities.lpad(i.toString(16).toUpperCase(), '0', 4);
				assert.isFalse(cleanISSN('1' + c + '2345679'), 'did not ignore internal character ' + charCode);
			}
		});
		it("should strip off surrounding non-ISSN string", function() {
			assert.equal(cleanISSN('ISSN 1234-5679'), '1234-5679', 'stripped off preceding string (with space)');
			assert.equal(cleanISSN('ISSN:1234-5679'), '1234-5679', 'stripped off preceding string (without space)');
			assert.equal(cleanISSN('1234-5679 ISSN'), '1234-5679', 'stripped off trailing string (with space)');
			assert.equal(cleanISSN('1234-5679(ISSN)'), '1234-5679', 'stripped off trailing string (without space)');
			assert.equal(cleanISSN('ISSN:1234-5679 (print)'), '1234-5679', 'stripped off surrounding string');
			assert.equal(cleanISSN('123 12345 679'), '1234-5679', 'stripped off pseudo-ISSN prefix');
		});
		it("should return the first valid ISSN from a string with multiple ISSNs", function() {
			assert.equal(cleanISSN('1234-5679, 0028-0836'), '1234-5679', 'returned first valid ISSN from list of valid ISSNs');
			assert.equal(cleanISSN('1234-5678, 0028-0836'), '0028-0836', 'returned first valid ISSN in the list with valid and invalid ISSNs');
		});
		it("should not return an ISSN from a middle of a longer number string", function() {
			assert.isFalse(cleanISSN('12312345679'), 'did not ignore number prefix');
			assert.isFalse(cleanISSN('12345679123'), 'did not ignore number suffix');
			assert.isFalse(cleanISSN('12312345679123'), 'did not ignore surrounding numbers');
		});
		it("should return valid ISSN from a dirty string", function() {
			assert.equal(cleanISSN('<b>ISSN</b>:1234\xA0-\t5679(print)\n<b>eISSN (electronic)</b>:0028-0836'), '1234-5679');
		});
	});
	describe("#ellipsize()", function () {
		describe("with wordBoundary", function () {
			it("should truncate at word boundary", function* () {
				assert.equal(Zotero.Utilities.ellipsize("abc def ghi", 3, true), "abc…");
			});
			
			it("should trim whitespace after word boundary", function* () {
				assert.equal(Zotero.Utilities.ellipsize("abc def ghi", 4, true), "abc…");
			});
			
			it("should trim characters after word boundary", function () {
				assert.equal(Zotero.Utilities.ellipsize("abc def ghi", 5, true), "abc…");
			});
			
			it("should truncate in the middle of a word", function () {
				assert.equal(Zotero.Utilities.ellipsize("abcdefghi", 6, true), "abcdef…");
			});
			
			it("should truncate at word boundary with previous space within radius", function () {
				assert.equal(Zotero.Utilities.ellipsize("abc def ghi", 7, true), "abc def…");
			});
			
			it("should return string as is if shorter than length", function () {
				assert.equal(Zotero.Utilities.ellipsize("abcdefg", 8, true), "abcdefg");
			});
			
			it("should return string as is if equal to length", function () {
				assert.equal(Zotero.Utilities.ellipsize("abcdefgh", 8, true), "abcdefgh");
			});
		});
	});
});