From b60fab48716add1d0dab50152de54070d5852e97 Mon Sep 17 00:00:00 2001
From: InsanusMokrassar <ovsyannikov.alexey95@gmail.com>
Date: Sat, 26 Jun 2021 01:27:28 +0600
Subject: [PATCH] BotCommandScope

---
 CHANGELOG.md                                  |   3 +
 .../types/commands/BotCommandScope.kt         | 120 ++++++++++++++++++
 2 files changed, 123 insertions(+)
 create mode 100644 tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/commands/BotCommandScope.kt

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 37789223d9..67f14cd528 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,9 @@
       `performInParallel`, by default `true`)
 * `API`:
     * All `reply` and subsequent extension have been replaced in send package
+    
+* `Bot API 5.3`:
+    * Add type `BotCommandScope`, its serializer `BotCommandScopeSerializer` and all its children
 
 ## 0.35.0
 
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/commands/BotCommandScope.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/commands/BotCommandScope.kt
new file mode 100644
index 0000000000..dcb606e335
--- /dev/null
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/commands/BotCommandScope.kt
@@ -0,0 +1,120 @@
+package dev.inmo.tgbotapi.types.commands
+
+import dev.inmo.tgbotapi.types.*
+import dev.inmo.tgbotapi.utils.RiskFeature
+import kotlinx.serialization.*
+import kotlinx.serialization.descriptors.SerialDescriptor
+import kotlinx.serialization.encoding.Decoder
+import kotlinx.serialization.encoding.Encoder
+
+@Serializable
+private class SurrogateBotCommandScope(
+    @SerialName(typeField)
+    @Required
+    val type: String,
+    @SerialName(chatIdField)
+    val chatId: ChatIdentifier? = null,
+    @SerialName(userIdField)
+    val userId: UserId? = null
+) {
+    fun asBotCommandScope() = when (type) {
+        "default" -> BotCommandScopeDefault
+        "all_private_chats" -> BotCommandScopeAllPrivateChats
+        "all_group_chats" -> BotCommandScopeAllGroupChats
+        "all_chat_administrators" -> BotCommandScopeAllChatAdministrators
+        "chat_administrators" -> BotCommandScopeChatAdministrators(
+            chatId ?: error("chat_administrators type must have $chatIdField field, but have no")
+        )
+        "chat_member" -> BotCommandScopeChatMember(
+            chatId ?: error("chat_administrators type must have $chatIdField field, but have no"),
+            userId ?: error("chat_administrators type must have $userIdField field, but have no")
+        )
+        else -> UnknownBotCommandScope(type)
+    }
+
+    companion object {
+        fun from(scope: BotCommandScope) = when (scope) {
+            is UnknownBotCommandScope,
+            BotCommandScopeDefault,
+            BotCommandScopeAllPrivateChats,
+            BotCommandScopeAllGroupChats,
+            BotCommandScopeAllChatAdministrators -> SurrogateBotCommandScope(scope.type)
+            is BotCommandScopeChatAdministrators -> SurrogateBotCommandScope(scope.type, scope.chatId)
+            is BotCommandScopeChatMember -> SurrogateBotCommandScope(scope.type, scope.chatId, scope.userId)
+        }
+    }
+}
+
+@Serializable(BotCommandScopeSerializer::class)
+sealed interface BotCommandScope {
+    val type: String
+}
+
+@Serializable
+data class UnknownBotCommandScope internal constructor(
+    override val type: String
+) : BotCommandScope
+
+@Serializable
+object BotCommandScopeDefault : BotCommandScope {
+    @Required
+    override val type: String = "default"
+}
+
+@Serializable
+object BotCommandScopeAllPrivateChats : BotCommandScope {
+    @Required
+    override val type: String = "all_private_chats"
+}
+
+@Serializable
+object BotCommandScopeAllGroupChats : BotCommandScope {
+    @Required
+    override val type: String = "all_group_chats"
+}
+
+@Serializable
+object BotCommandScopeAllChatAdministrators : BotCommandScope {
+    @Required
+    override val type: String = "all_chat_administrators"
+}
+
+
+sealed interface ChatBotCommandScope : BotCommandScope {
+    val chatId: ChatIdentifier
+}
+
+@Serializable
+data class BotCommandScopeChatAdministrators(
+    override val chatId: ChatIdentifier
+) : ChatBotCommandScope {
+    @Required
+    override val type: String = "chat_administrators"
+}
+
+@Serializable
+data class BotCommandScopeChatMember(
+    override val chatId: ChatIdentifier,
+    val userId: UserId
+) : ChatBotCommandScope {
+    @Required
+    override val type: String = "chat_member"
+}
+
+
+object BotCommandScopeSerializer : KSerializer<BotCommandScope> {
+
+    @RiskFeature
+    override val descriptor: SerialDescriptor = SurrogateBotCommandScope.serializer().descriptor
+
+    override fun deserialize(
+        decoder: Decoder
+    ): BotCommandScope = SurrogateBotCommandScope.serializer().deserialize(decoder).asBotCommandScope()
+
+    override fun serialize(encoder: Encoder, value: BotCommandScope) {
+        SurrogateBotCommandScope.serializer().serialize(
+            encoder, SurrogateBotCommandScope.from(value)
+        )
+    }
+
+}