com.justai.jaicf.channel.invocationapi.InvocationQueryParams.kt Maven / Gradle / Ivy

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package com.justai.jaicf.channel.invocationapi

import io.ktor.request.*
import io.ktor.util.*
import javax.servlet.http.HttpServletRequest


/**
 * @property clientId a recipient, chat or channel identifier from a concrete channel implementation.
 * @property input query or event sent to invoke channel activation.
 * @property type a [InvocationRequestType] of [InvocationRequest].
 * */
internal class InvocationQueryParams(queryParamsMap: Map>) {
    private val event: String? = queryParamsMap["event"]?.firstOrNull()
    private val query: String? = queryParamsMap["query"]?.firstOrNull()

    constructor(request: ApplicationRequest) : this(request.queryParameters.toMap())

    @Suppress("UNCHECKED_CAST")
    constructor(request: HttpServletRequest) : this(request.parameterMap.map { (k, v) ->
        (k as String) to (v as Array).toList()
    }.toMap())

    val type: InvocationRequestType = when {
        event != null -> InvocationRequestType.EVENT
        query != null -> InvocationRequestType.QUERY
        else -> throw HttpRequestException("event or query must be specified in query parameters")
    }

    val input = when (type) {
        InvocationRequestType.EVENT -> requireNotNull(event)
        InvocationRequestType.QUERY -> requireNotNull(query)
    }

    val clientId: String = queryParamsMap["clientId"]?.firstOrNull()
        ?: throw HttpRequestException("clientId path variable must be specified for invocation api call")
}

/**
 * Type of invocation request
 * */
internal enum class InvocationRequestType {
    EVENT, QUERY;
}

private class HttpRequestException(override val message: String) : RuntimeException()