// File generated from our OpenAPI spec by Stainless.

package com.openai.models.responses.inputitems

import com.openai.core.AutoPagerAsync
import com.openai.core.PageAsync
import com.openai.core.checkRequired
import com.openai.models.responses.ResponseComputerToolCall
import com.openai.models.responses.ResponseComputerToolCallOutputItem
import com.openai.models.responses.ResponseFileSearchToolCall
import com.openai.models.responses.ResponseFunctionToolCallItem
import com.openai.models.responses.ResponseFunctionToolCallOutputItem
import com.openai.models.responses.ResponseFunctionWebSearch
import com.openai.models.responses.ResponseInputMessageItem
import com.openai.models.responses.ResponseItem
import com.openai.models.responses.ResponseOutputMessage
import com.openai.services.async.responses.InputItemServiceAsync
import java.util.Objects
import java.util.Optional
import java.util.concurrent.CompletableFuture
import java.util.concurrent.Executor
import kotlin.jvm.optionals.getOrNull

/** @see [InputItemServiceAsync.list] */
class InputItemListPageAsync
private constructor(
    private val service: InputItemServiceAsync,
    private val streamHandlerExecutor: Executor,
    private val params: InputItemListParams,
    private val response: ResponseItemList,
) : PageAsync<ResponseItem> {

    /**
     * Delegates to [ResponseItemList], but gracefully handles missing data.
     *
     * @see [ResponseItemList.data]
     */
    fun data(): List<ResponseItem> = response._data().getOptional("data").getOrNull() ?: emptyList()

    /**
     * Delegates to [ResponseItemList], but gracefully handles missing data.
     *
     * @see [ResponseItemList.hasMore]
     */
    fun hasMore(): Optional<Boolean> = response._hasMore().getOptional("has_more")

    override fun items(): List<ResponseItem> = data()

    override fun hasNextPage(): Boolean = items().isNotEmpty()

    fun nextPageParams(): InputItemListParams =
        params
            .toBuilder()
            .after(
                items()
                    .last()
                    .accept(
                        object : ResponseItem.Visitor<Optional<String>> {
                            override fun visitResponseInputMessageItem(
                                responseInputMessageItem: ResponseInputMessageItem
                            ): Optional<String> = responseInputMessageItem._id().getOptional("id")

                            override fun visitResponseOutputMessage(
                                responseOutputMessage: ResponseOutputMessage
                            ): Optional<String> = responseOutputMessage._id().getOptional("id")

                            override fun visitFileSearchCall(
                                fileSearchCall: ResponseFileSearchToolCall
                            ): Optional<String> = fileSearchCall._id().getOptional("id")

                            override fun visitComputerCall(
                                computerCall: ResponseComputerToolCall
                            ): Optional<String> = computerCall._id().getOptional("id")

                            override fun visitComputerCallOutput(
                                computerCallOutput: ResponseComputerToolCallOutputItem
                            ): Optional<String> = computerCallOutput._id().getOptional("id")

                            override fun visitWebSearchCall(
                                webSearchCall: ResponseFunctionWebSearch
                            ): Optional<String> = webSearchCall._id().getOptional("id")

                            override fun visitFunctionCall(
                                functionCall: ResponseFunctionToolCallItem
                            ): Optional<String> = functionCall._id().getOptional("id")

                            override fun visitFunctionCallOutput(
                                functionCallOutput: ResponseFunctionToolCallOutputItem
                            ): Optional<String> = functionCallOutput._id().getOptional("id")
                        }
                    )
            )
            .build()

    override fun nextPage(): CompletableFuture<InputItemListPageAsync> =
        service.list(nextPageParams())

    fun autoPager(): AutoPagerAsync<ResponseItem> = AutoPagerAsync.from(this, streamHandlerExecutor)

    /** The parameters that were used to request this page. */
    fun params(): InputItemListParams = params

    /** The response that this page was parsed from. */
    fun response(): ResponseItemList = response

    fun toBuilder() = Builder().from(this)

    companion object {

        /**
         * Returns a mutable builder for constructing an instance of [InputItemListPageAsync].
         *
         * The following fields are required:
         * ```java
         * .service()
         * .streamHandlerExecutor()
         * .params()
         * .response()
         * ```
         */
        @JvmStatic fun builder() = Builder()
    }

    /** A builder for [InputItemListPageAsync]. */
    class Builder internal constructor() {

        private var service: InputItemServiceAsync? = null
        private var streamHandlerExecutor: Executor? = null
        private var params: InputItemListParams? = null
        private var response: ResponseItemList? = null

        @JvmSynthetic
        internal fun from(inputItemListPageAsync: InputItemListPageAsync) = apply {
            service = inputItemListPageAsync.service
            streamHandlerExecutor = inputItemListPageAsync.streamHandlerExecutor
            params = inputItemListPageAsync.params
            response = inputItemListPageAsync.response
        }

        fun service(service: InputItemServiceAsync) = apply { this.service = service }

        fun streamHandlerExecutor(streamHandlerExecutor: Executor) = apply {
            this.streamHandlerExecutor = streamHandlerExecutor
        }

        /** The parameters that were used to request this page. */
        fun params(params: InputItemListParams) = apply { this.params = params }

        /** The response that this page was parsed from. */
        fun response(response: ResponseItemList) = apply { this.response = response }

        /**
         * Returns an immutable instance of [InputItemListPageAsync].
         *
         * Further updates to this [Builder] will not mutate the returned instance.
         *
         * The following fields are required:
         * ```java
         * .service()
         * .streamHandlerExecutor()
         * .params()
         * .response()
         * ```
         *
         * @throws IllegalStateException if any required field is unset.
         */
        fun build(): InputItemListPageAsync =
            InputItemListPageAsync(
                checkRequired("service", service),
                checkRequired("streamHandlerExecutor", streamHandlerExecutor),
                checkRequired("params", params),
                checkRequired("response", response),
            )
    }

    override fun equals(other: Any?): Boolean {
        if (this === other) {
            return true
        }

        return /* spotless:off */ other is InputItemListPageAsync && service == other.service && streamHandlerExecutor == other.streamHandlerExecutor && params == other.params && response == other.response /* spotless:on */
    }

    override fun hashCode(): Int = /* spotless:off */ Objects.hash(service, streamHandlerExecutor, params, response) /* spotless:on */

    override fun toString() =
        "InputItemListPageAsync{service=$service, streamHandlerExecutor=$streamHandlerExecutor, params=$params, response=$response}"
}
