merged libraries into one

packages/lib/src/discord/commands/command-state.ts

@@ -0,0 +1,56 @@
+import { createReactiveState } from '@/util/reactive-state.js';
+import type { PartialContext } from './command-context.type';
+import { isApplicationCommand, isAutocomplete } from './command-helpers';
+import type { ExecutableInteraction } from './command-handler';
+
+export interface CommandState<T = any> {
+  id: string; // unique id for this command instance
+  name: string; // command name
+  data: T; // internal data storage
+}
+
+export async function getCommandState<T>(interaction: ExecutableInteraction, ctx: PartialContext): Promise<CommandState<T>> {
+  const id = instanceIdFromInteraction(interaction);
+
+  let state: CommandState<T>;
+
+  // get state from kv store if possible
+  if (ctx.kv.has(`command-state:${id}`)) {
+    state = await ctx.kv.get<CommandState<T>>(`command-state:${id}`);
+  }
+  if (!state) {
+    state = { id: id, name: '', data: {} as T };
+  }
+  const [reactiveState, subscribe] = createReactiveState(state);
+  subscribe(async (newState) => {
+    if (ctx.kv) {
+      await ctx.kv.set(`command-state:${id}`, newState);
+    }
+  });
+  ctx.state = reactiveState;
+  return reactiveState;
+}
+
+function instanceIdFromInteraction(interaction: ExecutableInteraction) {
+  if (isAutocomplete(interaction)) {
+    // autocomplete should not be stateful, they get no id
+    return '';
+  }
+
+  if (isApplicationCommand(interaction)) {
+    // for application commands, we create a new instance id
+    const instance_id = crypto.randomUUID();
+    return instance_id;
+  }
+
+  const interact = interaction;
+  const customId: string = interact.data.custom_id;
+  const commandId = customId.split('_').pop();
+  interaction;
+  // command id should be a uuid
+  if (commandId && /^[0-9a-f]{8}-[0-9a-f]{4}-[4][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/.test(commandId)) {
+    return commandId;
+  }
+  console.error(`Invalid command id extracted from interaction: ${customId}`);
+  return '';
+}