Kotlin Hazi

app/src/main/kotlin/WeatherApp.kt

@@ -1,12 +1,59 @@
 package hu.vanio.kotlin.feladat.ms
 
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties
+import com.fasterxml.jackson.core.JsonProcessingException
+import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
+import com.fasterxml.jackson.module.kotlin.readValue
+import java.net.URL
+import java.time.LocalDate
 import org.springframework.boot.autoconfigure.SpringBootApplication
 import org.springframework.boot.runApplication
+import java.io.IOException
 
 @SpringBootApplication
 class WeatherApp
 
 fun main() {
     runApplication<WeatherApp>()
+    val url = "https://api.open-meteo.com/v1/forecast?latitude=47.4984&longitude=19.0404&hourly=temperature_2m&timezone=auto"
+
+    try {
+        val json = URL(url).readText()
+        val forecast = jacksonObjectMapper().readValue<Forecast>(json)
+
+        val dailyAverages = averageTempreature(forecast)
+        printForecast(dailyAverages)
+
+    } catch (e: IOException) {
+        println("Adatok letöltése sikertelen: ${e.message}")
+    } catch (e: JsonProcessingException) {
+        println("JSON feldolgozása sikertelen: ${e.message}")
+    }
+}
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+data class Forecast(val hourly: HourlyData)
+//@JsonIgnoreProperties(ignoreUnknown = true)
+data class HourlyData(val time: List<String>, val temperature_2m: List<Double>)
+
+fun averageTempreature(forecast: Forecast): Map<LocalDate, Double> {
+    val dailyTemperatures = mutableMapOf<LocalDate, MutableList<Double>>()
+
+    forecast.hourly.time.forEachIndexed { index, timestamp ->
+        val date = LocalDate.parse(timestamp.substring(0, 10))
+        val temperature = forecast.hourly.temperature_2m[index]
+
+        if (dailyTemperatures.containsKey(date)) {
+            dailyTemperatures[date]!!.add(temperature)
+        } else {
+            dailyTemperatures[date] = mutableListOf(temperature)
+        }
+    }
+    return dailyTemperatures.mapValues { it.value.average() }
 }
 
+fun printForecast(dailyAverages: Map<LocalDate, Double>) {
+    dailyAverages.forEach { (date, temperature) ->
+        println("$date: $temperature °C")
+    }
+}

app/src/test/kotlin/WeatherAppTest.kt

@@ -1,11 +1,57 @@
 package hu.vanio.kotlin.feladat.ms
 
+import java.time.LocalDate
 import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertNotEquals
 
 class WeatherAppTest {
 
-    @Test fun `sikeres lekerdezes`() {
-        TODO()
+    @Test
+    fun `sikeres lekerdezes`() {
+        val forecast = Forecast(
+            HourlyData(
+                listOf(
+                    "2024-03-18T00:00", "2024-03-18T01:00", "2024-03-18T02:00",
+                    "2024-03-19T00:00", "2024-03-19T01:00", "2024-03-19T02:00",
+                    "2024-03-20T00:00", "2024-03-20T01:00", "2024-03-20T02:00"
+                ),
+                listOf(
+                    6.0, 5.7, 5.4, 5.2, 4.3, 4.6, 6.5, 7.7, 8.9
+                )
+            )
+        )
+        val result = averageTempreature(forecast)
+
+        val expected = mapOf(
+            LocalDate.parse("2024-03-18") to 5.7,
+            LocalDate.parse("2024-03-19") to 4.7,
+            LocalDate.parse("2024-03-20") to 7.7
+        )
+        assertEquals(expected, result)
     }
 
+    @Test
+    fun `sikertelen lekerdezes`() {
+        val forecast = Forecast(
+            HourlyData(
+                listOf("2024-03-18T00:00", "2024-03-18T01:00", "2024-03-18T02:00",
+                    "2024-03-19T00:00", "2024-03-19T01:00", "2024-03-19T02:00",
+                    "2024-03-20T00:00", "2024-03-20T01:00", "2024-03-20T02:00"
+                ),
+                listOf(
+                    6.0, 5.7, 5.4, 5.2, 4.3, 4.6, 6.5, 7.7, 11.1
+                )
+            )
+        )
+        val result = averageTempreature(forecast)
+
+        val expected = mapOf(
+            LocalDate.parse("2024-03-18") to 5.7,
+            LocalDate.parse("2024-03-19") to 4.7,
+            LocalDate.parse("2024-03-20") to 7.4
+        )
+        //3.nap 8.43 
+        assertNotEquals(expected, result);
+    }
 }