Market order logging

.gitignore

@@ -39,5 +39,6 @@ out/
 ### Kotlin ###
 .kotlin
 
-# simpler tests
-test_steering_signals.log
+# testing sideeffects
+*steering_signals.log
+*market_orders.log

src/main/kotlin/com/frankenergie/smartasset/client/MarketOrderClient.kt

@@ -0,0 +1,39 @@
+package com.frankenergie.smartasset.client
+
+import com.frankenergie.smartasset.model.MarketOrder
+import org.springframework.beans.factory.annotation.Value
+import org.springframework.stereotype.Component
+import java.nio.file.Files
+import java.nio.file.Path
+import java.nio.file.StandardOpenOption
+
+@Component
+class MarketOrderClient(
+    @Value("\${market.orders.file:market_orders.log}") private val filePath: String
+) {
+    private val file: Path = Path.of(filePath)
+
+    init {
+        if (!Files.exists(file)) {
+            Files.createFile(file)
+        }
+    }
+
+    fun sendOrder(order: MarketOrder) {
+        val line = formatOrder(order)
+        Files.writeString(file, "$line\n", StandardOpenOption.APPEND)
+    }
+
+    fun getAllOrders(): List<String> {
+        if (!Files.exists(file)) return emptyList()
+        return Files.readAllLines(file).filter { it.isNotBlank() }
+    }
+
+    fun clear() {
+        Files.writeString(file, "")
+    }
+
+    private fun formatOrder(order: MarketOrder): String {
+        return "${order.timestamp}|${order.orderId}|${order.groupId}|${order.deliveryStart}|${order.deliveryEnd}|${order.side}|${order.quantity}|${order.price}"
+    }
+}

src/main/kotlin/com/frankenergie/smartasset/model/MarketOrder.kt

@@ -0,0 +1,16 @@
+package com.frankenergie.smartasset.model
+
+import java.math.BigDecimal
+import java.time.Instant
+import java.time.LocalDateTime
+
+data class MarketOrder(
+    val orderId: String,
+    val groupId: String,
+    val deliveryStart: LocalDateTime,
+    val deliveryEnd: LocalDateTime,
+    val side: OrderSide,
+    val quantity: BigDecimal,
+    val price: BigDecimal,
+    val timestamp: Instant = Instant.now()
+)

src/test/kotlin/com/frankenergie/smartasset/client/MarketOrderClientTest.kt

@@ -0,0 +1,130 @@
+package com.frankenergie.smartasset.client
+
+import com.frankenergie.smartasset.model.MarketOrder
+import com.frankenergie.smartasset.model.OrderSide
+import org.junit.jupiter.api.AfterEach
+import org.junit.jupiter.api.Assertions.*
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+import java.math.BigDecimal
+import java.nio.file.Files
+import java.nio.file.Path
+import java.time.LocalDateTime
+
+class MarketOrderClientTest {
+
+    private val testFilePath = "./test_market_orders.log"
+    private lateinit var client: MarketOrderClient
+
+    @BeforeEach
+    fun setUp() {
+        Files.deleteIfExists(Path.of(testFilePath))
+        client = MarketOrderClient(testFilePath)
+    }
+
+    @AfterEach
+    fun tearDown() {
+        Files.deleteIfExists(Path.of(testFilePath))
+    }
+
+    @Test
+    fun `sendOrder writes order to file`() {
+        val order = MarketOrder(
+            orderId = "order-123",
+            groupId = "A",
+            deliveryStart = LocalDateTime.of(2024, 1, 15, 10, 0),
+            deliveryEnd = LocalDateTime.of(2024, 1, 15, 10, 15),
+            side = OrderSide.BUY,
+            quantity = BigDecimal("10"),
+            price = BigDecimal("50.00")
+        )
+
+        client.sendOrder(order)
+
+        val lines = client.getAllOrders()
+        assertEquals(1, lines.size)
+        assertTrue(lines[0].contains("order-123"))
+        assertTrue(lines[0].contains("A"))
+        assertTrue(lines[0].contains("BUY"))
+    }
+
+    @Test
+    fun `multiple orders written on separate lines`() {
+        val order1 = MarketOrder(
+            "order-1",
+            "A",
+            LocalDateTime.of(2024, 1, 15, 10, 0),
+            LocalDateTime.of(2024, 1, 15, 10, 15),
+            OrderSide.BUY,
+            BigDecimal("10"),
+            BigDecimal("50.00")
+        )
+        val order2 = MarketOrder(
+            "order-2",
+            "B",
+            LocalDateTime.of(2024, 1, 15, 10, 15),
+            LocalDateTime.of(2024, 1, 15, 10, 30),
+            OrderSide.SELL,
+            BigDecimal("5"),
+            BigDecimal("55.00")
+        )
+
+        client.sendOrder(order1)
+        client.sendOrder(order2)
+
+        val lines = client.getAllOrders()
+        assertEquals(2, lines.size)
+        assertTrue(lines[0].contains("order-1"))
+        assertTrue(lines[0].contains("BUY"))
+        assertTrue(lines[1].contains("order-2"))
+        assertTrue(lines[1].contains("SELL"))
+    }
+
+    @Test
+    fun `clear removes all orders`() {
+        val order = MarketOrder(
+            "order-1",
+            "A",
+            LocalDateTime.of(2024, 1, 15, 10, 0),
+            LocalDateTime.of(2024, 1, 15, 10, 15),
+            OrderSide.BUY,
+            BigDecimal("10"),
+            BigDecimal("50.00")
+        )
+        client.sendOrder(order)
+
+        client.clear()
+
+        assertTrue(client.getAllOrders().isEmpty())
+    }
+
+    @Test
+    fun `tracks both buy and sell orders`() {
+        val buyOrder = MarketOrder(
+            "buy-1",
+            "A",
+            LocalDateTime.of(2024, 1, 15, 10, 0),
+            LocalDateTime.of(2024, 1, 15, 10, 15),
+            OrderSide.BUY,
+            BigDecimal("10"),
+            BigDecimal("50.00")
+        )
+        val sellOrder = MarketOrder(
+            "sell-1",
+            "A",
+            LocalDateTime.of(2024, 1, 15, 10, 0),
+            LocalDateTime.of(2024, 1, 15, 10, 15),
+            OrderSide.SELL,
+            BigDecimal("10"),
+            BigDecimal("55.00")
+        )
+
+        client.sendOrder(buyOrder)
+        client.sendOrder(sellOrder)
+
+        val lines = client.getAllOrders()
+        assertEquals(2, lines.size)
+        assertTrue(lines.any { it.contains("BUY") })
+        assertTrue(lines.any { it.contains("SELL") })
+    }
+}