feat(timezone): Adds timezone as option

source/Discord/Commands/Server.ts

@@ -1,16 +1,24 @@
-import {CacheType, ChatInputCommandInteraction, PermissionFlagsBits, SlashCommandBuilder, Snowflake} from "discord.js";
+import {
+  CacheType,
+  ChatInputCommandInteraction,
+  hyperlink,
+  inlineCode,
+  PermissionFlagsBits,
+  SlashCommandBuilder,
+  Snowflake
+} from "discord.js";
 import {ChatInteractionCommand, Command} from "./Command";
-import {GroupSelection} from "../CommandPartials/GroupSelection";
 import {MenuHandler} from "../../Configuration/MenuHandler";
 import {ConfigurationHandler} from "../../Configuration/ConfigurationHandler";
-import {GroupConfigurationProvider} from "../../Configuration/Groups/GroupConfigurationProvider";
 import {Container} from "../../Container/Container";
-import {GroupConfigurationRepository} from "../../Database/Repositories/GroupConfigurationRepository";
 import {MenuRenderer} from "../../Menu/MenuRenderer";
 import {MenuTraversal} from "../../Menu/MenuTraversal";
 import {MenuItemType} from "../../Menu/MenuRenderer.types";
 import {ServerConfigurationProvider} from "../../Configuration/Server/ServerConfigurationProvider";
 import {ServerConfigurationRepository} from "../../Database/Repositories/ServerConfigurationRepository";
+import {TimezoneHandler, TimezoneSaveTarget} from "../../Configuration/TimezoneHandler";
+import {EmbedLibrary, EmbedType} from "../EmbedLibrary";
+import {UserError} from "../UserError";
 
 export class ServerCommand implements Command, ChatInteractionCommand {
   definition(): SlashCommandBuilder {
@@ -22,6 +30,15 @@ export class ServerCommand implements Command, ChatInteractionCommand {
         .setName("config")
         .setDescription("Starts the configurator for the server settings")
       )
+      .addSubcommand(command => command
+        .setName("timezone")
+        .setDescription("Sets the timezone for the server, if a value is provided. If not, the current timezone is displayed.")
+        .addStringOption(option => option
+          .setName('timezone')
+          .setDescription("The timezone the server should use.")
+          .setRequired(false)
+        )
+      )
   }
 
   async execute(interaction: ChatInputCommandInteraction<CacheType>): Promise<void> {
@@ -29,6 +46,9 @@ export class ServerCommand implements Command, ChatInteractionCommand {
       case "config":
         await this.startConfiguration(interaction);
         break
+      case "timezone":
+        await this.handleTimezone(interaction);
+        break;
     }
   }
 
@@ -79,4 +99,46 @@ export class ServerCommand implements Command, ChatInteractionCommand {
     
     menu.display(interaction);
   }
+
+  private async handleTimezone(interaction: ChatInputCommandInteraction<CacheType>) {
+    const enteredTimezone = interaction.options.getString('timezone');
+
+    const timezoneHandler = new TimezoneHandler(
+      interaction.guildId ?? ''
+    );
+    if (!enteredTimezone) {
+      await interaction.reply(
+        {
+          embeds: [
+            EmbedLibrary.base(
+              "Timezone",
+              `The group currently uses the timezone ${inlineCode(timezoneHandler.getCurrentTimezone())}.`,
+              EmbedType.Info
+            )
+          ]
+        }
+      )
+      return;
+    }
+
+    if (!TimezoneHandler.ALL_TIMEZONES.includes(enteredTimezone)) {
+      throw new UserError(
+        `Invalid timezone provided: ${enteredTimezone}`,
+        `Try using timezones found in this list using the 'TZ Identifier'. ${hyperlink("List", 'https://en.wikipedia.org/wiki/List_of_tz_database_time_zones#List')}`
+      )
+    }
+
+    timezoneHandler.save(enteredTimezone, TimezoneSaveTarget.Server);
+    await interaction.reply(
+      {
+        embeds: [
+          EmbedLibrary.base(
+            "Timezone changed",
+            `The server now uses the timezone ${inlineCode(enteredTimezone)}.`,
+            EmbedType.Success
+          )
+        ]
+      }
+    )
+  }
 }