commonMain.com.algolia.client.configuration.internal.HttpClient.kt Maven / Gradle / Ivy

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"Algolia is a powerful search-as-a-service solution, made easy to use with API clients, UI libraries, and pre-built integrations. Algolia API Client for Kotlin lets you easily use the Algolia Search REST API from your JVM project, such as Android or backend implementations."

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package com.algolia.client.configuration.internal

import com.algolia.client.configuration.ClientOptions
import io.ktor.client.*
import io.ktor.client.plugins.*
import io.ktor.client.plugins.contentnegotiation.*
import io.ktor.client.plugins.logging.*
import io.ktor.client.request.*
import io.ktor.serialization.kotlinx.json.*

private const val HEADER_APPLICATION_ID = "x-algolia-application-id"
public const val HEADER_APIKEY: String = "x-algolia-api-key"

internal fun algoliaHttpClient(
  appId: String,
  apiKey: String,
  options: ClientOptions,
  agent: AlgoliaAgent,
) = httpClientOf(options) { configure(appId, apiKey, options, agent) }

private fun httpClientOf(options: ClientOptions, block: HttpClientConfig<*>.() -> Unit) =
  options.engine?.let { HttpClient(it, block) } ?: HttpClient(block)

internal fun HttpClientConfig<*>.configure(
  appId: String,
  apiKey: String,
  options: ClientOptions,
  algoliaAgent: AlgoliaAgent,
) {
  // Custom configuration
  options.httpClientConfig?.invoke(this)

  // Content negotiation and serialization
  install(ContentNegotiation) {
    json(options.json)
  }

  // Logging
  if (options.logLevel != LogLevel.NONE) {
    install(Logging) {
      level = options.logLevel
      logger = options.logger
    }
  }

  // Algolia user agent
  install(UserAgent) {
    agent = algoliaAgent.toString()
  }

  // Timeout
  install(HttpTimeout)

  // Defaults
  defaultRequest {
    if (!headers.contains(HEADER_APPLICATION_ID)) {
      header(HEADER_APPLICATION_ID, appId)
    }
    if (!headers.contains(HEADER_APIKEY)) {
      header(HEADER_APIKEY, apiKey)
    }
    options.defaultHeaders?.forEach { (key, value) -> header(key, value) }
  }

  // Enable default (2XX) validation
  expectSuccess = true

  // Platform specific configuration
  platformConfig(options)
}