improve: extract a price when it is prefixed a euro sign

Author: php-coder

src/main/java/ru/mystamps/web/feature/series/importing/SeriesInfoExtractorServiceImpl.java

@@ -422,6 +422,7 @@ public SeriesExtractedInfo extract(String pageUrl, RawParsedDataDto data) {
 		"PMD.AvoidInstantiatingObjectsInLoops",
 		"PMD.AvoidReassigningParameters",
 		"PMD.NPathComplexity",
+		"PMD.ModifiedCyclomaticComplexity",
 		"checkstyle:parameterassignment"
 	})
 	/* default */ BigDecimal extractPrice(String fragment) {
@@ -437,7 +438,7 @@ public SeriesExtractedInfo extract(String pageUrl, RawParsedDataDto data) {
 			fragment = matcher.replaceAll("$1$2");
 		}
 
-		String prefix = "US$";
+		String[] prefixes = new String[]{"US$", "€"};
 		String postfix = "$";
 
 		String[] candidates = StringUtils.split(fragment, ' ');
@@ -455,9 +456,12 @@ public SeriesExtractedInfo extract(String pageUrl, RawParsedDataDto data) {
 			if (candidate.endsWith(postfix) && candidate.length() > postfix.length()) {
 				candidate = StringUtils.substringBeforeLast(candidate, postfix);
 			}
-			// "US$10" -> "10"
-			if (candidate.startsWith(prefix) && candidate.length() > prefix.length()) {
-				candidate = StringUtils.substringAfter(candidate, prefix);
+			// "${prefix}10" -> "10"
+			for (String prefix : prefixes) {
+				if (candidate.startsWith(prefix) && candidate.length() > prefix.length()) {
+					candidate = StringUtils.substringAfter(candidate, prefix);
+					break;
+				}
 			}
 			try {
 				BigDecimal price = new BigDecimal(candidate);

src/test/groovy/ru/mystamps/web/feature/series/importing/SeriesInfoExtractorServiceImplTest.groovy

@@ -660,6 +660,7 @@ class SeriesInfoExtractorServiceImplTest extends Specification {
 			'10.0 EUR'      | BigDecimal.TEN
 			'10.00 EUR'     | BigDecimal.TEN
 			'10,00 EUR'     | BigDecimal.TEN
+			'€3.50'         | new BigDecimal('3.50')
 			'10 руб 16 коп' | BigDecimal.TEN
 			'RUB 1,218.79'  | new BigDecimal('1218.79')
 	}