refactor: Extract database to its own module

3 files changed, 80 insertions, 0 deletions

diff --git a/basetypes/build.gradle.kts b/basetypes/build.gradle.kts
new file mode 100644
index 0000000..f4b1a8b
--- /dev/null
+++ b/basetypes/build.gradle.kts
@@ -0,0 +1,12 @@
+plugins {
+	`java-library`
+	kotlin("jvm")
+}
+
+java {
+	toolchain.languageVersion.set(JavaLanguageVersion.of(8))
+}
+
+dependencies {
+	implementation("io.azam.ulidj:ulidj:1.0.4")
+}
diff --git a/basetypes/src/main/kotlin/moe/nea/ledger/utils/ULIDWrapper.kt b/basetypes/src/main/kotlin/moe/nea/ledger/utils/ULIDWrapper.kt
new file mode 100644
index 0000000..b8c5d3b
--- /dev/null
+++ b/basetypes/src/main/kotlin/moe/nea/ledger/utils/ULIDWrapper.kt
@@ -0,0 +1,27 @@
+package moe.nea.ledger.utils
+
+import io.azam.ulidj.ULID
+import java.time.Instant
+import kotlin.random.Random
+
+@JvmInline
+value class ULIDWrapper(
+	val wrapped: String
+) {
+	companion object {
+		fun createULIDAt(timestamp: Instant): ULIDWrapper {
+			return ULIDWrapper(ULID.generate(
+				timestamp.toEpochMilli(),
+				Random.nextBytes(10)
+			))
+		}
+	}
+
+	fun getTimestamp(): Instant {
+		return Instant.ofEpochMilli(ULID.getTimestamp(wrapped))
+	}
+
+	init {
+		require(ULID.isValid(wrapped))
+	}
+}
\ No newline at end of file
diff --git a/basetypes/src/main/kotlin/moe/nea/ledger/utils/UUIDUtil.kt b/basetypes/src/main/kotlin/moe/nea/ledger/utils/UUIDUtil.kt
new file mode 100644
index 0000000..92a29f7
--- /dev/null
+++ b/basetypes/src/main/kotlin/moe/nea/ledger/utils/UUIDUtil.kt
@@ -0,0 +1,41 @@
+package moe.nea.ledger.utils
+
+import java.util.UUID
+import kotlin.uuid.ExperimentalUuidApi
+import kotlin.uuid.Uuid
+import kotlin.uuid.toJavaUuid
+
+object UUIDUtil {
+	@OptIn(ExperimentalUuidApi::class)
+	fun parsePotentiallyDashlessUUID(str: String): UUID {
+		val bytes = ByteArray(16)
+		var i = -1
+		var bi = 0
+		while (++i < str.length) {
+			val char = str[i]
+			if (char == '-') {
+				if (bi != 4 && bi != 6 && bi != 8 && bi != 10) {
+					error("Unexpected dash in UUID: $str")
+				}
+				continue
+			}
+			val current = parseHexDigit(str, char)
+			++i
+			if (i >= str.length)
+				error("Unexpectedly short UUID: $str")
+			val next = parseHexDigit(str, str[i])
+			bytes[bi++] = (current * 16 or next).toByte()
+		}
+		if (bi != 16)
+			error("Unexpectedly short UUID: $str")
+		return Uuid.fromByteArray(bytes).toJavaUuid()
+	}
+
+	private fun parseHexDigit(str: String, char: Char): Int {
+		val d = char - '0'
+		if (d < 10) return d
+		val h = char - 'a'
+		if (h < 6) return 10 + h
+		error("Unexpected hex digit $char in UUID: $str")
+	}
+}
\ No newline at end of file