item transfer, item to buy other items, item income, unbuyable items

commands/transfer_item.ts

@@ -0,0 +1,35 @@
+import type { ChatInputCommandInteraction } from "discord.js";
+
+import type { CommandData } from "./index";
+import type { StoreItem, User } from "../db";
+import { get_item, get_user, add_item_to_user, sub_item_to_user } from "../db";
+import { BotError } from "./common/error";
+import { item_name_autocomplete } from "./common/autocompletes";
+
+async function run(interaction: ChatInputCommandInteraction, user: User) {
+  const options = interaction.options;
+  const name: string = (await options.get("name")).value as string;
+  const target_id: string = (await options.get("target")).user.id;
+  const quantity: number = (await options.get("quantity")).value as number;
+  if (quantity <= 0) throw new BotError("Can't transfer 0 or less of an item");
+  let trans_user = await get_user(target_id);
+  if (!trans_user) throw new BotError("Target is not registered");
+  const item = await get_item(name);
+  if (!item) throw new BotError("Item does not exist");
+  if (!(await sub_item_to_user(user.user, name, quantity))) throw new BotError("You did not have enough of that item to transfer");
+  await add_item_to_user(target_id, item.name, quantity);
+  return await interaction.editReply(`Transferred ${quantity} of \`${name}\` to <@${target_id}>`);
+}
+
+const data: CommandData = {
+  name: "transfer_item",
+  description: "Give a(n) item(s) to another user",
+  registered_only: true,
+  ephemeral: false,
+  admin_only: false,
+  run,
+  autocomplete: item_name_autocomplete, //autocompletes for the "name" option
+};
+
+export default data;
+