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Robust UseCaseIdExtractor #374

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Merged
patwlan merged 1 commit into from
Feb 16, 2026
Merged

Robust UseCaseIdExtractor #374

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6 changes: 4 additions & 2 deletions arc-assistants/src/main/kotlin/usecases/UseCaseIdExtractor.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -8,13 +8,15 @@ typealias UseCaseId = String

/**
* Extract the use case id from the assistant message.
* For example, "<ID:useCaseId>"
* For example, "<ID:useCaseId> "<UseCase:useCaseId>"
*/
private val useCaseIdRegex = "<ID:(.*?)>".toRegex(RegexOption.IGNORE_CASE)
private val useCaseIdRegex_alt = "<use[_]?case:(.*?)>".toRegex(RegexOption.IGNORE_CASE)

fun extractUseCaseId(message: String): Pair<String, UseCaseId?> {
val id = useCaseIdRegex.find(message)?.groupValues?.elementAtOrNull(1)?.trim()
val cleanedMessage = message.replace(useCaseIdRegex, "").trim()
?: useCaseIdRegex_alt.find(message)?.groupValues?.elementAtOrNull(1)?.trim()
val cleanedMessage = message.replace(useCaseIdRegex, "").replace(useCaseIdRegex_alt, "").trim()
return cleanedMessage to id
}

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17 changes: 17 additions & 0 deletions arc-assistants/src/test/kotlin/usecases/UseCaseIdExtractorTest.kt
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Expand Up @@ -75,4 +75,21 @@ class UseCaseIdExtractorTest {
assertThat(filteredMessage).contains("This is a reply from the LLM with <Dummy Data>")
assertThat(useCaseId).isEqualTo("use_case01")
}

@Test
fun `test usecase variant extraction`(): Unit = runBlocking {
val variants = listOf(
"<usecase:abc123> Message.",
"<UseCase:abc123> Message.",
"<use_case:abc123> Message.",
"<Use_Case:abc123> Message.",
"<USECASE:abc123> Message.",
"<USE_CASE:abc123> Message."
)
for (msg in variants) {
val (filteredMessage, useCaseId) = extractUseCaseId(msg)
assertThat(filteredMessage).contains("Message.")
assertThat(useCaseId).isEqualTo("abc123")
}
}
}