Operations and External Calls

import { defineOperation } from "bijection/server";
import { BijectionError, v } from "bijection/values";
import { orders } from "./schema";
import { billing } from "./billing";

export const cancel = defineOperation({
  on: orders,
  target: { argument: "order_id" },
  args: { order_id: v.id("order_records"), invoice_id: v.id("invoices") },
  returns: v.object({ call: v.string() }),
  prepare: async (ctx, args) => {
    const order = await ctx.db.get(args.order_id);
    if (!order || order.status === "cancelled") {
      throw new BijectionError({
        code: "ORDER_STATE",
        message: "This order can no longer be cancelled",
      });
    }
    await ctx.db.patch(args.order_id, { status: "cancelled" });
    const call = await ctx.externalCalls.submit(billing.commands.voidInvoice, {
      target: args.invoice_id,
      args: { reason: "order cancelled" },
    });
    return { call };
  },
});