From 3e1b7259095b344263fe1f2ce245c6f754e1da5a Mon Sep 17 00:00:00 2001
From: Greg Bowler <greg.bowler@g105b.com>
Date: Wed, 13 Sep 2023 15:18:09 +0100
Subject: [PATCH 1/2] tweak: fix links

---
 README.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 2f48c02..9317cde 100644
--- a/README.md
+++ b/README.md
@@ -10,10 +10,10 @@ This solves the problems exposed with working with auto-incrementing integer pri
 <a href="https://github.com/PhpGt/Ulid/actions" target="_blank">
 	<img src="https://badge.status.php.gt/ulid-build.svg" alt="Build status" />
 </a>
-<a href="https://scrutinizer-ci.com/g/PhpGt/Ulid" target="_blank">
+<a href="https://app.codacy.com/gh/PhpGt/Ulid" target="_blank">
 	<img src="https://badge.status.php.gt/ulid-quality.svg" alt="Code quality" />
 </a>
-<a href="https://scrutinizer-ci.com/g/PhpGt/Ulid" target="_blank">
+<a href="https://app.codecov.io/gh/PhpGt/Ulid" target="_blank">
 	<img src="https://badge.status.php.gt/ulid-coverage.svg" alt="Code coverage" />
 </a>
 <a href="https://packagist.org/packages/PhpGt/Ulid" target="_blank">

From df1399686eacae40b2b4cf23f1f9974062aaa170 Mon Sep 17 00:00:00 2001
From: Greg Bowler <greg.bowler@g105b.com>
Date: Wed, 13 Sep 2023 15:32:49 +0100
Subject: [PATCH 2/2] feature: stripe-style prefixes

---
 src/Ulid.php              | 28 +++++++++++++++++++---------
 test/phpunit/UlidTest.php | 14 ++++++++++----
 2 files changed, 29 insertions(+), 13 deletions(-)

diff --git a/src/Ulid.php b/src/Ulid.php
index 0ad0dd6..007bc33 100644
--- a/src/Ulid.php
+++ b/src/Ulid.php
@@ -11,14 +11,12 @@ class Ulid implements Stringable {
 	private string $randomString;
 
 	public function __construct(
-		float|int $init = null,
+		private ?string $prefix = null,
+		float|int $timestamp = null,
 		private int $length = self::DEFAULT_TOTAL_LENGTH,
 		private int $timestampLength = self::DEFAULT_TIMESTAMP_LENGTH,
 	) {
-		if(!is_null($init)) {
-			$timestamp = $init;
-		}
-		else {
+		if(is_null($timestamp)) {
 			$timestamp = microtime(true);
 		}
 
@@ -27,19 +25,31 @@ public function __construct(
 		$this->randomString = "";
 		for($i = 0; $i < $this->length - $this->timestampLength; $i++) {
 			$rnd = random_int(0, 31);
-			$this->randomString .= $this->base32(
-				$rnd
-			);
+			$this->randomString .= $this->base32($rnd);
 		}
 	}
 
 	public function __toString():string {
 		$timestampString = $this->getTimestampString();
 		$randomString = $this->getRandomString();
-		return implode("", [
+
+		$string = implode("", [
 			$timestampString,
 			$randomString,
 		]);
+
+		if($this->prefix) {
+			$string = implode("_", [
+				$this->prefix,
+				$string,
+			]);
+		}
+
+		return $string;
+	}
+
+	public function getPrefix():?string {
+		return $this->prefix;
 	}
 
 	public function getTimestamp():float {
diff --git a/test/phpunit/UlidTest.php b/test/phpunit/UlidTest.php
index 4833631..074dffc 100644
--- a/test/phpunit/UlidTest.php
+++ b/test/phpunit/UlidTest.php
@@ -13,7 +13,7 @@ public function testGetTimestamp():void {
 
 	public function testGetTimestamp_setInConstructor():void {
 		$timestamp = (float)strtotime("5th April 1988");
-		$sut = new Ulid($timestamp);
+		$sut = new Ulid(timestamp: $timestamp);
 		self::assertSame($timestamp, $sut->getTimestamp());
 	}
 
@@ -22,7 +22,7 @@ public function testGetHexTimestamp_lexSorting():void {
 		for($year = 1970; $year < 2676; $year++) {
 			$timestamp = (float)strtotime("1st January $year");
 			$timestamp += rand(-1000, 1000) / 1000;
-			$sut = new Ulid($timestamp);
+			$sut = new Ulid(timestamp: $timestamp);
 			$hex = $sut->getTimestampString();
 			if($lastHex) {
 				self::assertGreaterThan($lastHex, $hex, $year);
@@ -30,7 +30,7 @@ public function testGetHexTimestamp_lexSorting():void {
 			$lastHex = $hex;
 		}
 
-		$sut = new Ulid(strtotime("5th April 1988"));
+		$sut = new Ulid(timestamp: strtotime("5th April 1988"));
 		self::assertLessThan($lastHex, $sut->getTimestampString());
 	}
 
@@ -41,7 +41,7 @@ public function testToString_unique():void {
 	public function testToString_length():void {
 		// Testing multiple times in case randomness causes different length strings.
 		for($i = 0; $i < 1_000; $i++) {
-			$sut = (string)(new Ulid(0));
+			$sut = (string)(new Ulid(timestamp: 0));
 			self::assertSame(Ulid::DEFAULT_TOTAL_LENGTH, strlen($sut));
 		}
 	}
@@ -79,4 +79,10 @@ public function testConstruct_setTimestampLength():void {
 			self::assertSame($tLength, strlen($tString));
 		}
 	}
+
+	public function testConstruct_prefix():void {
+		$sut = new Ulid("customer");
+		self::assertStringStartsWith("customer_", $sut);
+		self::assertGreaterThan(strlen("customer_") + 10, strlen($sut));
+	}
 }