import { readFile, writeFile } from "node:fs/promises";
import { DocxEditor } from "@docx-editor.dev/editor-api";

const input = await readFile("contract.docx");
const runtime = await DocxEditor.createServer(input, {
  author: "Contract review agent",
});

try {
  await runtime.run(async (context) => {
    const matches = context.document.body.search("within 7 days", {
      matchCase: true,
    });
    matches.load("items");
    await context.sync();
    if (matches.items.length !== 1) {
      throw new Error("Expected exactly one deadline clause.");
    }
    context.document.changeTrackingMode = "TrackMineOnly";
    matches.items[0].insertText("within 30 days", "Replace");
    await context.sync();
  });
  await writeFile("contract.redlined.docx", await runtime.save());
} finally {
  runtime.dispose();
}