Rewrite kernel in kotlin

.gitignore

@@ -127,3 +127,7 @@ dmypy.json
 
 # Pyre type checker
 .pyre/
+
+.idea
+
+*.iml

Dockerfile

@@ -4,7 +4,17 @@ WORKDIR /app
 RUN mvn clean package
 
 FROM amazoncorretto:17-alpine
+ENV ROOM="Room"
+ENV TEACHER="Teacher"
+ENV SUMMARY="School"
+ENV USERNAME="null"
+ENV PASSWORD="null"
+ENV SERVER="niobe.webuntis.com"
+ENV SCHOOL="null"
+ENV SSL="true"
+ENV TOKEN="secret"
+
 COPY --from=builder /app/target/app-jar-with-dependencies.jar /
-EXPOSE 4567
-CMD java -jar app-jar-with-dependencies.jar
+EXPOSE 8080
+CMD ["java", "-jar", "app-jar-with-dependencies.jar", "$ROOM", "$TEACHER", "$SUMMARY", "$USERNAME", "$USERNAME", "$PASSWORD", "$SERVER", "$SCHOOL", "$SSL", "$TOKEN"]
 

app/pom.xml

@@ -4,11 +4,13 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
-    <groupId>com.velocitypackage</groupId>
-    <artifactId>untiscalender</artifactId>
+    <groupId>com.velocitypackage.untiscalender</groupId>
+    <artifactId>app</artifactId>
     <version>1.0</version>
 
     <properties>
+        <kotlin.version>1.8.10</kotlin.version>
+        <kotlin.compiler.incremental>true</kotlin.compiler.incremental>
         <maven.compiler.source>14</maven.compiler.source>
         <maven.compiler.target>14</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -22,6 +24,11 @@
     </repositories>
 
     <dependencies>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-stdlib</artifactId>
+            <version>${kotlin.version}</version>
+        </dependency>
         <dependency>
             <groupId>com.github.untisapi</groupId>
             <artifactId>untis4j</artifactId>
@@ -32,44 +39,115 @@
             <artifactId>ical4j</artifactId>
             <version>3.2.10</version>
         </dependency>
-        <dependency>
-            <groupId>com.sparkjava</groupId>
-            <artifactId>spark-core</artifactId>
-            <version>2.9.4</version>
-        </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-simple</artifactId>
             <version>1.7.21</version>
         </dependency>
+
+        <dependency>
+            <groupId>io.ktor</groupId>
+            <artifactId>ktor-server-core-jvm</artifactId>
+            <version>2.2.3</version>
+        </dependency>
+        <dependency>
+            <groupId>io.ktor</groupId>
+            <artifactId>ktor-server-netty-jvm</artifactId>
+            <version>2.2.3</version>
+        </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <version>1.4.5</version>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+            <version>2.0.6</version>
+        </dependency>
+        <dependency>
+            <groupId>io.ktor</groupId>
+            <artifactId>ktor-server-call-logging-jvm</artifactId>
+            <version>2.2.3</version>
+        </dependency>
     </dependencies>
 
     <build>
         <finalName>app</finalName>
         <plugins>
+            <plugin>
+                <groupId>org.jetbrains.kotlin</groupId>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <version>${kotlin.version}</version>
+                <executions>
+                    <execution>
+                        <id>compile</id>
+                        <goals>
+                            <goal>compile</goal>
+                        </goals>
+                        <configuration>
+                            <sourceDirs>
+                                <sourceDir>${project.basedir}/src/main/kotlin</sourceDir>
+                                <sourceDir>${project.basedir}/src/main/java</sourceDir>
+                            </sourceDirs>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>test-compile</id>
+                        <goals> <goal>test-compile</goal> </goals>
+                        <configuration>
+                            <sourceDirs>
+                                <sourceDir>${project.basedir}/src/test/kotlin</sourceDir>
+                                <sourceDir>${project.basedir}/src/test/java</sourceDir>
+                            </sourceDirs>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.10.1</version>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
+                <version>3.5.1</version>
+                <executions>
+                    <!-- Replacing default-compile as it is treated specially by maven -->
+                    <execution>
+                        <id>default-compile</id>
+                        <phase>none</phase>
+                    </execution>
+                    <!-- Replacing default-testCompile as it is treated specially by maven -->
+                    <execution>
+                        <id>default-testCompile</id>
+                        <phase>none</phase>
+                    </execution>
+                    <execution>
+                        <id>java-compile</id>
+                        <phase>compile</phase>
+                        <goals>
+                            <goal>compile</goal>
+                        </goals>
+                    </execution>
+                    <execution>
+                        <id>java-test-compile</id>
+                        <phase>test-compile</phase>
+                        <goals>
+                            <goal>testCompile</goal>
+                        </goals>
+                    </execution>
+                </executions>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-assembly-plugin</artifactId>
-                <version>3.4.2</version>
+                <version>2.6</version>
                 <executions>
                     <execution>
+                        <id>make-assembly</id>
                         <phase>package</phase>
-                        <goals>
-                            <goal>single</goal>
-                        </goals>
+                        <goals> <goal>single</goal> </goals>
                         <configuration>
                             <archive>
                                 <manifest>
-                                    <mainClass>com.velocitypackage.untiscalender.Main</mainClass>
+                                    <mainClass>com.velocitypackage.untiscalender.app.AppKt</mainClass>
                                 </manifest>
                             </archive>
                             <descriptorRefs>

app/src/main/java/com/velocitypackage/untiscalender/app/App.kt

@@ -0,0 +1,40 @@
+package com.velocitypackage.untiscalender.app
+
+import io.ktor.http.*
+import io.ktor.server.application.*
+import io.ktor.server.engine.*
+import io.ktor.server.netty.*
+import io.ktor.server.plugins.callloging.*
+import io.ktor.server.response.*
+import io.ktor.server.routing.*
+import org.slf4j.event.*
+
+fun main(vararg args : String)
+{
+    Config.defaultRoomAlias = args[0]
+    Config.defaultTeacherAlias = args[1]
+    Config.defaultSummary = args[2]
+    Config.username = args[3]
+    Config.password = args[4]
+    Config.server = args[5]
+    Config.school = args[6]
+    Config.ssl = args[7] == "true"
+    Config.token = args[8]
+    embeddedServer(Netty, port = 8080, module = Application::module).start(true)
+}
+
+fun Application.module()
+{
+    install(CallLogging) {
+        level = Level.INFO
+    }
+    routing {
+        get("/by/{token}") {
+            if (call.parameters["token"] != Config.token) return@get call.respond(
+                HttpStatusCode.Unauthorized,
+                "Wrong access token!"
+            )
+            return@get call.respond(HttpStatusCode.OK, getUserSpecificTable().getCalender().toString())
+        }
+    }
+}

app/src/main/java/com/velocitypackage/untiscalender/app/Config.kt

@@ -0,0 +1,21 @@
+package com.velocitypackage.untiscalender.app
+
+object Config
+{
+    var defaultRoomAlias : String = "Room"
+    var defaultTeacherAlias : String = "Teacher"
+    var defaultSummary : String = "School"
+
+    var username : String = "null"
+    var password : String = "null"
+    var server : String = "null"
+    var school : String = "null"
+    var ssl : Boolean = true
+
+    fun getURL() : String
+    {
+        if (ssl) return "https://${server}" else return "http://${server}"
+    }
+
+    var token : String = "secret"
+}

app/src/main/java/com/velocitypackage/untiscalender/app/Timetable.kt

@@ -0,0 +1,11 @@
+package com.velocitypackage.untiscalender.app
+
+import org.bytedream.untis4j.Session
+import org.bytedream.untis4j.responseObjects.Timetable
+
+val session = Session.login(Config.username, Config.password, Config.getURL(), Config.school)
+
+fun getUserSpecificTable() : Timetable
+{
+    return session.getTimetableFromPersonId(session.currentSchoolYear.startDate, session.currentSchoolYear.endDate, session.infos.personId)
+}

app/src/main/java/com/velocitypackage/untiscalender/app/iCalModel.kt

@@ -0,0 +1,43 @@
+package com.velocitypackage.untiscalender.app
+
+import net.fortuna.ical4j.model.Calendar
+import net.fortuna.ical4j.model.Date
+import net.fortuna.ical4j.model.DateTime
+import net.fortuna.ical4j.model.component.VEvent
+import net.fortuna.ical4j.model.property.CalScale
+import net.fortuna.ical4j.model.property.Description
+import net.fortuna.ical4j.model.property.ProdId
+import net.fortuna.ical4j.model.property.Version
+import org.bytedream.untis4j.UntisUtils
+import org.bytedream.untis4j.responseObjects.Timetable
+import java.time.ZoneId
+
+fun Timetable.getCalender() : Calendar
+{
+    val calendar = Calendar()
+    calendar.properties.add(ProdId("-//VelocityPackage//UntisCalender 1.0//EN"))
+    calendar.properties.add(Version.VERSION_2_0)
+    calendar.properties.add(CalScale.GREGORIAN)
+    for (lesson in this)
+    {
+        if (lesson.code == UntisUtils.LessonCode.CANCELLED) continue
+        var name = Config.defaultSummary
+        try
+        {
+            name = lesson.subjects.longNames[0]
+        } catch (_ : Exception) { }
+        val event = VEvent(
+            DateTime(Date.from(lesson.startTime.atDate(lesson.date).atZone(ZoneId.systemDefault()).toInstant())),
+            DateTime(Date.from(lesson.endTime.atDate(lesson.date).atZone(ZoneId.systemDefault()).toInstant())),
+            name
+        )
+        try
+        {
+            event.properties.add(Description("${Config.defaultRoomAlias}: ${lesson.rooms[0].longName} \n${Config.defaultTeacherAlias}: ${lesson.teachers[0].fullName}"))
+        } catch (_ : Exception) { }
+        calendar.components.add(
+            event
+        )
+    }
+    return calendar
+}