add opportunity to setup proxy

bot/build.gradle

@@ -22,6 +22,8 @@ dependencies {
     api libs.microutils.koin
     api libs.microutils.startup.launcher
 
+    api libs.ktor.engine.okhttp
+
     api libs.sqlite
 
     testImplementation libs.kt.test.junit

bot/src/main/kotlin/dev/inmo/plagubot/PlaguBot.kt

@@ -3,7 +3,6 @@ package dev.inmo.plagubot
 import dev.inmo.kslog.common.*
 import dev.inmo.micro_utils.common.Warning
 import dev.inmo.micro_utils.coroutines.runCatchingLogging
-import dev.inmo.micro_utils.coroutines.runCatchingSafely
 import dev.inmo.micro_utils.fsm.common.State
 import dev.inmo.micro_utils.fsm.common.StatesManager
 import dev.inmo.micro_utils.fsm.common.managers.*
@@ -16,6 +15,10 @@ import dev.inmo.tgbotapi.bot.ktor.telegramBot
 import dev.inmo.tgbotapi.extensions.api.webhook.deleteWebhook
 import dev.inmo.tgbotapi.extensions.behaviour_builder.*
 import dev.inmo.tgbotapi.extensions.utils.updates.retrieving.startGettingOfUpdatesByLongPolling
+import io.ktor.client.HttpClient
+import io.ktor.client.engine.HttpClientEngine
+import io.ktor.client.engine.HttpClientEngineFactory
+import io.ktor.client.engine.okhttp.OkHttp
 import kotlinx.coroutines.*
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.json.*
@@ -58,6 +61,19 @@ object PlaguBot : Plugin {
      * @param params Raw JSON params of the bot part of the configuration
      */
     override fun KtorRequestsExecutorBuilder.setupBotClient(scope: Scope, params: JsonObject) {
+        val config = scope.get<Config>()
+        if (config.proxy != null) {
+            val initialClient = config.proxy.createDefaultClient()
+            val clientFromHttpClientEngine = scope.getOrNull<HttpClientEngine>() ?.let {
+                HttpClient(it)
+            }
+            val clientFromKoin = clientFromHttpClientEngine ?: (scope.getOrNull<HttpClientEngineFactory<*>>() ?: OkHttp).let {
+                HttpClient(it)
+            }
+            this@setupBotClient.client = initialClient.config {
+                install(clientFromKoin)
+            }
+        }
         scope.plugins.filter { it !== this@PlaguBot }.forEach {
             with(it) {
                 setupBotClient(scope, params)

bot/src/main/kotlin/dev/inmo/plagubot/config/Config.kt

@@ -14,5 +14,6 @@ data class Config(
     @SerialName("database")
     val databaseConfig: DatabaseConfig = DatabaseConfig(),
     val botApiServer: String = telegramBotAPIDefaultUrl,
-    val testServer: Boolean = false
+    val testServer: Boolean = false,
+    val proxy: ProxyConfig? = null,
 )

bot/src/main/kotlin/dev/inmo/plagubot/config/ProxyConfig.kt

@@ -0,0 +1,47 @@
+package dev.inmo.plagubot.config
+
+import io.ktor.client.*
+import io.ktor.client.engine.okhttp.OkHttp
+import io.ktor.client.plugins.*
+import io.ktor.client.request.*
+import io.ktor.http.*
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.Transient
+import java.net.Authenticator
+import java.net.InetSocketAddress
+import java.net.PasswordAuthentication
+import java.net.Proxy
+import kotlin.io.encoding.Base64
+
+@Serializable
+data class ProxyConfig(
+    val host: String,
+    val port: Int,
+    val username: String? = null,
+    val password: String? = null
+) {
+    @Transient
+    private val proxy = Proxy(Proxy.Type.SOCKS, InetSocketAddress(host, port))
+    fun createDefaultClient() = HttpClient(OkHttp) {
+        engine {
+            config {
+                proxy(this@ProxyConfig.proxy)
+                if (username != null && password != null) {
+                    val passwordAuthentication = PasswordAuthentication(
+                        username,
+                        password.toCharArray()
+                    )
+                    Authenticator.setDefault(object : Authenticator() {
+                        override fun getPasswordAuthentication(): PasswordAuthentication? {
+                            return if (requestingHost.lowercase() == host.lowercase()) {
+                                passwordAuthentication
+                            } else {
+                                null
+                            }
+                        }
+                    })
+                }
+            }
+        }
+    }
+}