add: guild list command

src/main/kotlin/me/notsmatch/teambot/command/GuildlistCommand.kt

@@ -0,0 +1,88 @@
+package me.notsmatch.tracktablebot.command
+
+import com.jagrosh.jdautilities.command.Command
+import com.jagrosh.jdautilities.command.CommandEvent
+import com.jagrosh.jdautilities.commons.waiter.EventWaiter
+import com.jagrosh.jdautilities.doc.standard.CommandInfo
+import com.jagrosh.jdautilities.doc.standard.Error
+import com.jagrosh.jdautilities.doc.standard.RequiredPermissions
+import com.jagrosh.jdautilities.examples.doc.Author
+import com.jagrosh.jdautilities.menu.Paginator
+import net.dv8tion.jda.api.Permission
+import net.dv8tion.jda.api.entities.ChannelType
+import net.dv8tion.jda.api.entities.Guild
+import net.dv8tion.jda.api.entities.Message
+import net.dv8tion.jda.api.exceptions.PermissionException
+import java.awt.Color
+import java.util.concurrent.TimeUnit
+
+@CommandInfo(
+    name = ["Guildlist"],
+    description = "Gets a paginated list of the guilds the bot is on.",
+    requirements = ["The bot has all necessary permissions.", "The user is the bot's owner."]
+)
+@Error(
+    value = "If arguments are provided, but they are not an integer.",
+    response = "[PageNumber] is not a valid integer!"
+)
+@RequiredPermissions(
+    Permission.MESSAGE_EMBED_LINKS,
+    Permission.MESSAGE_ADD_REACTION
+)
+@Author("notsmatch")
+class GuildlistCommand(waiter: EventWaiter?) : Command() {
+    private val pbuilder: Paginator.Builder
+    override fun execute(event: CommandEvent) {
+        var page = 1
+        if (!event.args.isEmpty()) {
+            page = try {
+                event.args.toInt()
+            } catch (e: NumberFormatException) {
+                event.reply(event.client.error + " `" + event.args + "` is not a valid integer!")
+                return
+            }
+        }
+        pbuilder.clearItems()
+        event.jda.guilds.stream()
+            .map { g: Guild -> "**" + g.name + "** (ID:" + g.id + ") ~ " + g.members.size + " Members" }
+            .forEach { items: String? -> pbuilder.addItems(items) }
+        val p = pbuilder.setColor(
+            if (event.isFromType(ChannelType.TEXT)) event.selfMember.color else Color.black
+        )
+            .setText(
+                event.client.success + " Guilds that **" + event.selfUser
+                    .name + "** is connected to"
+                        + if (event.jda.shardInfo == null) ":" else "(Shard ID " + event.jda
+                    .shardInfo.shardId + "):"
+            )
+            .setUsers(event.author)
+            .build()
+        p.paginate(event.channel, page)
+    }
+
+    init {
+        name = "guildlist"
+        help = "shows the list of guilds the bot is on"
+        arguments = "[pagenum]"
+        botPermissions = arrayOf(
+            Permission.MESSAGE_EMBED_LINKS,
+            Permission.MESSAGE_ADD_REACTION
+        )
+        guildOnly = false
+        ownerCommand = true
+        pbuilder = Paginator.Builder().setColumns(1)
+            .setItemsPerPage(10)
+            .showPageNumbers(true)
+            .waitOnSinglePage(false)
+            .useNumberedItems(false)
+            .setFinalAction { m: Message ->
+                try {
+                    m.clearReactions().queue()
+                } catch (ex: PermissionException) {
+                    m.delete().queue()
+                }
+            }
+            .setEventWaiter(waiter)
+            .setTimeout(1, TimeUnit.MINUTES)
+    }
+}