Add list moons command (#449)

- Add concept of moons to the database
- Add the list moons command to view a user's moons
- This command is paginated using buttons

#195

Reviewed-on: #449
Reviewed-by: VylpesTester <tester@vylpes.com>
Co-authored-by: Ethan Lane <ethan@vylpes.com>
Co-committed-by: Ethan Lane <ethan@vylpes.com>

src/commands/304276391837302787/moons/list.ts

@@ -0,0 +1,45 @@
+import {ActionRowBuilder, ButtonBuilder, ButtonStyle, CommandInteraction, EmbedBuilder} from "discord.js";
+import Moon from "../../../database/entities/Moon";
+import EmbedColours from "../../../constants/EmbedColours";
+
+export default async function ListMoons(interaction: CommandInteraction) {
+    const user = interaction.options.get("user")?.user ?? interaction.user;
+    const page = interaction.options.get("page")?.value as number ?? 0;
+
+    const pageLength = 10;
+
+    const moons = await Moon.FetchPaginatedMoonsByUserId(user.id, pageLength, page);
+
+    if (!moons || moons[0].length == 0) {
+        await interaction.reply(`${user.username} does not have any moons or page is invalid.`);
+        return;
+    }
+
+    const totalPages = Math.ceil(moons[1] / pageLength);
+
+    const description = moons[0].flatMap(x => `${x.MoonNumber}. ${x.Description.slice(0, 15)}`);
+
+    const embed = new EmbedBuilder()
+        .setTitle(`${user.username}'s Moons`)
+        .setColor(EmbedColours.Ok)
+        .setDescription(description.join("\n"))
+        .setFooter({ text: `Page ${page + 1} of ${totalPages} · ${moons[1]} moons` });
+
+    const row = new ActionRowBuilder<ButtonBuilder>()
+        .addComponents(
+            new ButtonBuilder()
+                .setCustomId(`moons list ${user.id} ${page - 1}`)
+                .setLabel("Previous")
+                .setStyle(ButtonStyle.Primary)
+                .setDisabled(page == 0),
+            new ButtonBuilder()
+                .setCustomId(`moons list ${user.id} ${page + 1}`)
+                .setLabel("Next")
+                .setStyle(ButtonStyle.Primary)
+                .setDisabled(page + 1 == totalPages));
+
+    await interaction.reply({
+        embeds: [ embed ],
+        components: [ row ],
+    });
+}