The session material for LINE Developer Meetup #49 in Kyoto at 2019/1/23

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dependencies {
implementation "org.jetbrains.kotlin:kotlin-script-util:$kotlinVersion"
implementation "org.jetbrains.kotlin:kotlin-script-runtime:$kotlinVersion"
implementation "org.jetbrains.kotlin:kotlin-compiler-embeddable:$kotlinVersion”
}
Add the dependencies

7. ( ) ) )
org.jetbrains.kotlin.script.jsr223.KotlinJsr223JvmLocalScriptEngineFactory
add a file javax.script.ScriptEngineFactory in “resources/META-INF/services/”

8. ( ) ) )
private val scriptEngine: ScriptEngine = ScriptEngineManager().getEngineByExtension("kts")!!
Get the ScriptEngine

9. )( ( (
(
val x = scriptEngine.eval(
"""
fun x(input: Int): Int = input + 3
""")
x=?x=null

10. )( ( (
(
val y = scriptEngine.eval(
"""
fun x(input: Int): Int = input + 3
val y = x(2)
""")
y=?y=null

11. )( ( (
(
val x = scriptEngine.eval(
"""
fun x(input: Int): Int = input + 3
x(2)
""")
x=?x=5

12. )( ( (
(
val value = scriptEngine.eval(
"""
fun x(input: Int): Int = input + 3
val x = x(2)
var y = x
x
y = x(7)
""")
value=?value=null

13. )( ( (
(
val value = scriptEngine.eval(
"""
fun x(input: Int): Int = input + 3
var x = x(2)
var y = x
x = 10
x
y + 1
""")
value=?value=6

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) (

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17. val client: ClovaClient = clovaClient(applicationId = "YOUR APPLICATION ID") {
objectMapper = JacksonObjectMapper() //SDK only supports Jackson now
launchHandler { request, session ->
simpleResponse(message = " ")
}
intentHandler { request, session ->
val value = request.intent.slots["number"]?.value
simpleResponseWithReprompt(
message = " ${value} ",
repromptMessage = " ”
)
}
sessionEndedHandler { request, session ->
simpleResponse(message = " ")
}
}

18. val client: ClovaClient = clovaClient(applicationId = "YOUR APPLICATION ID") {
objectMapper = JacksonObjectMapper()
launchHandler { request, session ->
simpleResponse(message = “ ”) // Helper function
}
intentHandler { request, session ->
val value = request.intent.slots["number"]?.value
simpleResponseWithReprompt(
message = " ${value} ",
repromptMessage = " ”
)
}
sessionEndedHandler { request, session ->
simpleResponse(message = " ")
}
}

19. val client: ClovaClient = clovaClient(applicationId = "YOUR APPLICATION ID") {
objectMapper = JacksonObjectMapper()
launchHandler { request, session ->
simpleResponse(message = " ")
}
intentHandler { request, session ->
val value = request.intent.slots["number"]?.value
simpleResponseWithReprompt(
message = " ${value} ",
repromptMessage = " ”
)
}
sessionEndedHandler { request, session ->
simpleResponse(message = " ")
}
}

20. val client: ClovaClient = clovaClient(applicationId = "YOUR APPLICATION ID") {
objectMapper = JacksonObjectMapper()
launchHandler { request, session ->
simpleResponse(message = " ")
}
intentHandler { request, session ->
val value = request.intent.slots["number"]?.value
simpleResponseWithReprompt(
message = " ${value} ",
repromptMessage = " ”
)
}
sessionEndedHandler { request, session ->
simpleResponse(message = " ")
}
}

21. @Dsl
fun ClovaClient.launchHandler(handler: RequestHandler<LaunchRequest>) {
launchHandler = handler
}
@Dsl
fun ClovaClient.intentHandler(handler: RequestHandler<IntentRequest>) {
intentHandler = handler
}
@Dsl
fun ClovaClient.sessionEndedHandler(handler: RequestHandler<SessionEndedRequest>) {
sessionEndedHandler = handler
}

22. typealias RequestHandler<T> = suspend (T, Session) -> ClovaExtensionResponse
launchHandler { request, session ->
simpleResponse(message = “ ”) ! // return ClovaExtensionResponse
}

23. //requestBody and response are json strings
val response = client.handleClovaRequest(requestBody, request.headers().asHttpHeaders())

24. •
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25. Is it possible to use Kotlin script
to create ClovaClient??

27. val clovaClient = scriptEngine.eval("""
clovaClient(applicationId = "APPLICATION_ID") {
launchHandler { ... }
intentHandler { ... }
sessionEndedHandler { ... }
}
""")

28. val clovaClient = scriptEngine.eval("""
import com.linecorp.clova.extension.client.*
import com.linecorp.clova.extension.model.util.*
import com.linecorp.clova.extension.model.response.*
import com.linecorp.clova.extension.converter.jackson.JacksonObjectMapper
clovaClient(applicationId = "YOUR APPLICATION ID") {
launchHandler { ...}
intentHandler { ... }
sessionEndedHandler { ... }
}
""")

29. val clovaClient = scriptEngine.eval(
"""
import …
clovaClient(applicationId = "APPLICATION_ID") {
…
}
""")
…
val response = client.handleClovaRequest(requestBody, request.headers().asHttpHeaders())

30. val clovaClient = scriptEngine.eval(
"""
import …
clovaClient(applicationId = "APPLICATION_ID") {
…
}
""")
…
val response = client.handleClovaRequest(requestBody, request.headers().asHttpHeaders())
! Input the script from web

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33. !