fix(web): validate script create/update by compilation only

src/main/kotlin/work/slhaf/hub/script/ScriptEngine.kt

@@ -159,6 +159,54 @@ fun removeCachedMetadata(scriptFile: File) {
     compiledScriptCache.remove(scriptFile.canonicalPath)
 }
 
+fun validateCompilationAndCapture(scriptFile: File): ScriptExecutionResult {
+    synchronized(evalLock) {
+        val oldOut = System.out
+        val oldErr = System.err
+        val buffer = ByteArrayOutputStream()
+        val ps = PrintStream(buffer, true, Charsets.UTF_8.name())
+
+        return try {
+            System.setOut(ps)
+            System.setErr(ps)
+
+            val original = scriptFile.readText()
+            val metadata = metadataForFile(scriptFile, original)
+            val injected = injectArgsBridgeDeclaration(original)
+            val compilationResult = compiledScriptFor(scriptFile, injected)
+            val reports = compilationResult.reports
+            val hasErrorDiagnostics = reports.any {
+                it.severity == ScriptDiagnostic.Severity.ERROR || it.severity == ScriptDiagnostic.Severity.FATAL
+            }
+            val diagnostics = reports
+                .filter { it.severity > ScriptDiagnostic.Severity.DEBUG }
+                .joinToString("\n") {
+                    val ex = it.exception?.let { e -> ": ${e::class.simpleName}: ${e.message}" } ?: ""
+                    "[${it.severity}] ${it.message}$ex"
+                }
+
+            val output = buffer.toString(Charsets.UTF_8.name()).trim()
+            val finalText = buildString {
+                if (output.isNotEmpty()) appendLine(output)
+                if (diagnostics.isNotEmpty()) appendLine(diagnostics)
+            }.trim()
+
+            ScriptExecutionResult(
+                ok = compilationResult is ResultWithDiagnostics.Success && !hasErrorDiagnostics,
+                output = finalText,
+                metadata = metadata,
+                missingRequiredParams = emptyList(),
+                timedOut = false,
+            )
+        } finally {
+            ps.flush()
+            ps.close()
+            System.setOut(oldOut)
+            System.setErr(oldErr)
+        }
+    }
+}
+
 fun evalAndCapture(scriptFile: File, requestContext: ScriptRequestContext = ScriptRequestContext()): ScriptExecutionResult {
     return evalAndCapture(scriptFile, requestContext, enforceRequiredParams = true)
 }

src/main/kotlin/work/slhaf/hub/web/WebScriptService.kt

@@ -133,7 +133,7 @@ suspend fun handleCreateScript(call: ApplicationCall, scriptsDir: File) {
     script.writeText(content)
     removeCachedMetadata(script)
 
-    val result = evalAndCapture(script, ScriptRequestContext(), enforceRequiredParams = false)
+    val result = validateCompilationAndCapture(script)
     if (!result.ok) {
         script.delete()
         removeCachedMetadata(script)
@@ -197,7 +197,7 @@ suspend fun handleUpdateScript(call: ApplicationCall, scriptsDir: File) {
     script.writeText(newContent)
     removeCachedMetadata(script)
 
-    val result = evalAndCapture(script, ScriptRequestContext(), enforceRequiredParams = false)
+    val result = validateCompilationAndCapture(script)
     if (!result.ok) {
         script.writeText(previousContent)
         removeCachedMetadata(script)

src/test/kotlin/work/slhaf/hub/web/WebAuthAndScriptApiTest.kt

@@ -103,4 +103,28 @@ class WebAuthAndScriptApiTest : WebHostTestSupport() {
         assertTrue(body.contains("metadata validation failed"))
         assertTrue(body.contains("missing required option"))
     }
+
+    @Test
+    fun createWithRequiredParamsValidatesByCompilationOnly() = withApp { _ ->
+        val create = client.post("/scripts/required-param-script") {
+            bearerRoot()
+            setBody(
+                """
+                // @desc: required param demo
+                // @param: owner | required=true | desc=Repository owner
+                lateinit var args: Array<String>
+                val owner = args.mapNotNull {
+                    val i = it.indexOf('=')
+                    if (i <= 0) null else it.substring(0, i) to it.substring(i + 1)
+                }.toMap()["owner"] ?: error("missing required param: owner")
+                println(owner)
+                """.trimIndent()
+            )
+        }
+        assertEquals(HttpStatusCode.Created, create.status)
+
+        val runMissing = client.get("/run/required-param-script") { bearerRoot() }
+        assertEquals(HttpStatusCode.BadRequest, runMissing.status)
+        assertTrue(runMissing.bodyAsText().contains("missing required params: owner"))
+    }
 }