♻️ 用表情訂閱/解除訂閱機制

manage-subscriber-role/src/main/kotlin/tw/waterballsa/utopia/managesubscriberole/AbstractManageSubscriberRole.kt

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+package tw.waterballsa.utopia.managesubscriberole
+
+import net.dv8tion.jda.api.entities.Guild
+import net.dv8tion.jda.api.entities.Role
+import net.dv8tion.jda.api.entities.UserSnowflake
+import net.dv8tion.jda.api.events.message.react.GenericMessageReactionEvent
+import tw.waterballsa.utopia.commons.config.WsaDiscordProperties
+import tw.waterballsa.utopia.jda.UtopiaListener
+
+abstract class AbstractManageSubscriberRole(private val wsa: WsaDiscordProperties): UtopiaListener() {
+
+    private val emojiToSubscriberRoleIdMap = hashMapOf<String, String>()
+
+    /**
+     * "1️⃣"：軟體英文派對訂閱者
+     * "2️⃣"：遊戲微服務計畫訂閱者
+     * "3️⃣"：純函式咖啡訂閱者
+     * "4️⃣"：技術演講吐司會訂閱者
+     * "7️⃣"：CS Lab 訂閱者
+     */
+    init {
+        emojiToSubscriberRoleIdMap["1️⃣"] = wsa.wsaSECSubsriberMemberRoleId
+        emojiToSubscriberRoleIdMap["2️⃣"] = wsa.wsaGaaSSubscriberRoleId
+        emojiToSubscriberRoleIdMap["3️⃣"] = wsa.wsaPurefuncSubscriberRoleId
+        emojiToSubscriberRoleIdMap["4️⃣"] = wsa.wsaTTMSubscriberRoleId
+        emojiToSubscriberRoleIdMap["7️⃣"] = wsa.wsaCSLabSubscriberRoleId
+    }
+
+    /**
+     * 管理訂閱者身份組
+     */
+    protected fun <T: GenericMessageReactionEvent> manageSubscriberRole(event: T,
+                                                                        handleSubscriberRole: (guild: Guild, userSnowflake: UserSnowflake, role: Role) -> Unit) {
+        with(event) {
+            if (messageId != wsa.manageSubscriberRoleMessageId) {
+                return
+            }
+            emojiToSubscriberRoleIdMap[emoji.name]?.run {
+                val user = UserSnowflake.fromId(userId)
+                val role = jda.getRoleById(this)?: return
+                handleSubscriberRole(guild, user, role)
+            }
+        }
+    }
+}

manage-subscriber-role/src/main/kotlin/tw/waterballsa/utopia/managesubscriberole/AddSubscriberRoleListener.kt

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+package tw.waterballsa.utopia.managesubscriberole
+
+import mu.KotlinLogging
+import net.dv8tion.jda.api.events.message.react.MessageReactionRemoveEvent
+import org.springframework.stereotype.Component
+import tw.waterballsa.utopia.commons.config.WsaDiscordProperties
+
+private val logger = KotlinLogging.logger {}
+@Component
+class AddSubscriberRoleListener(wsa : WsaDiscordProperties) : AbstractManageSubscriberRole(wsa) {
+
+    /**
+     * 移除表情時，新增對應訂閱者身份組
+     */
+    override fun onMessageReactionRemove(event: MessageReactionRemoveEvent) {
+        manageSubscriberRole(event) { guild, user, role ->
+            guild.addRoleToMember(user, role)
+                    .queue {
+                        logger.info { "[Add Role] {\"userId\":\"${user.id}\", \"roleName\":\"${role.name}\" }" }
+                    }
+        }
+    }
+}

manage-subscriber-role/src/main/kotlin/tw/waterballsa/utopia/managesubscriberole/RemoveSubscriberRoleListener.kt

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+package tw.waterballsa.utopia.managesubscriberole
+
+import mu.KotlinLogging
+import net.dv8tion.jda.api.events.message.react.MessageReactionAddEvent
+import org.springframework.stereotype.Component
+import tw.waterballsa.utopia.commons.config.WsaDiscordProperties
+
+private val logger = KotlinLogging.logger {}
+
+@Component
+class RemoveSubscriberRoleListener(wsa : WsaDiscordProperties) : AbstractManageSubscriberRole(wsa) {
+
+    /**
+     * 新增表情，移除對應訂閱者身份組
+     */
+    override fun onMessageReactionAdd(event: MessageReactionAddEvent) {
+        manageSubscriberRole(event) { guild, user, role ->
+            guild.removeRoleFromMember(user, role)
+                    .queue {
+                        logger.info { "[Remove Role] {\"userId\":\"${user.id}\", \"roleName\":\"${role.name}\" }" }
+                    }
+        }
+    }
+}