From 786b8d0df40401f734b589264ab73f1b0485765e Mon Sep 17 00:00:00 2001
From: Robert von Burg <eitch@eitchnet.ch>
Date: Fri, 20 Mar 2020 14:56:48 +0100
Subject: [PATCH] [Minor] Added SimpleGs1 parser

---
 .../main/java/li/strolch/utils/SimpleGs1.java | 58 +++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 li.strolch.utils/src/main/java/li/strolch/utils/SimpleGs1.java

diff --git a/li.strolch.utils/src/main/java/li/strolch/utils/SimpleGs1.java b/li.strolch.utils/src/main/java/li/strolch/utils/SimpleGs1.java
new file mode 100644
index 000000000..e93a9dac0
--- /dev/null
+++ b/li.strolch.utils/src/main/java/li/strolch/utils/SimpleGs1.java
@@ -0,0 +1,58 @@
+package li.strolch.utils;
+
+import static li.strolch.utils.helper.ExceptionHelper.formatException;
+import static li.strolch.utils.helper.ExceptionHelper.getRootCause;
+
+import java.time.LocalDate;
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
+
+public class SimpleGs1 {
+
+	private String gtin;
+	private ZonedDateTime expirationDate;
+	private String batchNo;
+
+	private SimpleGs1(String gs1) {
+		if (gs1.length() < 32 || gs1.length() > 46)
+			throw new IllegalArgumentException("Can not parse GS1 " + gs1);
+		try {
+			this.gtin = gs1.substring(2, 14);
+			this.expirationDate = LocalDate.parse(gs1.substring(18, 24), DateTimeFormatter.ofPattern("yyMMdd"))
+					.atStartOfDay(ZoneId.systemDefault());
+			this.batchNo = gs1.substring(26);
+		} catch (Exception e) {
+			throw new IllegalArgumentException("Can not parse GS1 " + gs1 + ": " + formatException(getRootCause(e)));
+		}
+	}
+
+	public String getGtin() {
+		return this.gtin;
+	}
+
+	public ZonedDateTime getExpirationDate() {
+		return this.expirationDate;
+	}
+
+	public String getBatchNo() {
+		return this.batchNo;
+	}
+
+	public static SimpleGs1 valueOf(String gs1) {
+		return new SimpleGs1(gs1);
+	}
+
+	@Override
+	public String toString() {
+		return "SimpleGs1{" + "gtin='" + gtin + '\'' + ", expirationDate=" + expirationDate + ", batchNo='" + batchNo
+				+ '\'' + '}';
+	}
+
+	public static void main(String[] args) {
+		String example = "01076806134200251723090110D72375";
+		//String example = "0107680671300017172106301092405";
+		SimpleGs1 gs1 = SimpleGs1.valueOf(example);
+		System.out.println(gs1);
+	}
+}