Implement buy subcommand

src/commands/effects/Buy.ts

@@ -1,4 +1,22 @@
 import { CommandInteraction } from "discord.js";
+import EffectHelper from "../../helpers/EffectHelper";
 
 export default async function Buy(interaction: CommandInteraction) {
+    const id = interaction.options.get("id", true).value!;
+    const quantity = interaction.options.get("quantity")?.value ?? 1;
+
+    const idValue = id.toString();
+    const quantityValue = Number(quantity);
+
+    const result = await EffectHelper.GenerateEffectBuyEmbed(interaction.user.id, idValue, quantityValue, false);
+
+    if (typeof result == "string") {
+        await interaction.reply(result);
+        return;
+    }
+
+    await interaction.reply({
+        embeds: [ result.embed ],
+        components: [ result.row ],
+    });
 }

tests/commands/effects/Buy.test.ts

@@ -0,0 +1,12 @@
+import Buy from "../../../src/commands/effects/Buy";
+import EffectHelper from "../../../src/helpers/EffectHelper";
+
+jest.mock("../../../src/helpers/EffectHelper");
+
+describe("Buy", () => {
+    test.todo("GIVEN result returns a string, EXPECT interaction replied with string");
+
+    test.todo("GIVEN result returns an embed, EXPECT interaction replied with embed and row");
+
+    test.todo("GIVEN quantity option is not supplied, EXPECT quantity to default to 1");
+});