feat(tools): 2.0 phase 5 wave 2 - pdf depth (21 tools) (#220)

apps/api/src/routes/tools/crop-pdf.ts

@@ -0,0 +1,38 @@
+import { writeFile } from "node:fs/promises";
+import { join } from "node:path";
+import { pdfcpuCropMargin } from "@snapotter/doc-engine";
+import type { FastifyInstance } from "fastify";
+import { z } from "zod";
+import { createToolRoute } from "../tool-factory.js";
+
+const settingsSchema = z.object({
+  margin: z.number().min(0).max(2000).default(20),
+});
+
+export function registerCropPdf(app: FastifyInstance) {
+  createToolRoute(app, {
+    toolId: "crop-pdf",
+    settingsSchema,
+    process: async () => {
+      throw new Error("crop-pdf is v2-only");
+    },
+    processV2: async (ctx) => {
+      const settings = settingsSchema.parse(ctx.settings);
+      const input = ctx.inputs[0];
+      const base = input.filename.replace(/\.[^.]+$/, "");
+      const inPath = join(ctx.scratchDir, `in-${input.filename.replace(/[^A-Za-z0-9._-]/g, "_")}`);
+      await writeFile(inPath, input.buffer);
+
+      const outPath = join(ctx.scratchDir, `${base}_cropped.pdf`);
+      ctx.report(10, "Cropping");
+      await pdfcpuCropMargin(inPath, settings.margin, outPath);
+      ctx.report(90, "Done");
+
+      return {
+        scratchPath: outPath,
+        filename: `${base}_cropped.pdf`,
+        contentType: "application/pdf",
+      };
+    },
+  });
+}