feat: render signatures on pending envelopes (#2743)

packages/trpc/server/envelope-router/envelope-fields/get-envelope-field-signatures.ts

@@ -0,0 +1,65 @@
+import { FieldType } from '@prisma/client';
+
+import { AppError, AppErrorCode } from '@documenso/lib/errors/app-error';
+import { getEnvelopeWhereInput } from '@documenso/lib/server-only/envelope/get-envelope-by-id';
+import { prisma } from '@documenso/prisma';
+
+import { authenticatedProcedure } from '../../trpc';
+import {
+  ZGetEnvelopeFieldSignaturesRequestSchema,
+  ZGetEnvelopeFieldSignaturesResponseSchema,
+} from './get-envelope-field-signatures.types';
+
+export const getEnvelopeFieldSignaturesRoute = authenticatedProcedure
+  .input(ZGetEnvelopeFieldSignaturesRequestSchema)
+  .output(ZGetEnvelopeFieldSignaturesResponseSchema)
+  .query(async ({ input, ctx }) => {
+    const { teamId, user } = ctx;
+    const { envelopeId } = input;
+
+    ctx.logger.info({
+      input: {
+        envelopeId,
+      },
+    });
+
+    // Validate the user has access to the envelope.
+    const { envelopeWhereInput } = await getEnvelopeWhereInput({
+      id: {
+        type: 'envelopeId',
+        id: envelopeId,
+      },
+      type: null,
+      userId: user.id,
+      teamId,
+    });
+
+    const envelope = await prisma.envelope.findFirst({
+      where: envelopeWhereInput,
+      include: {
+        fields: {
+          where: {
+            inserted: true,
+            type: FieldType.SIGNATURE,
+          },
+          include: {
+            signature: true,
+          },
+        },
+      },
+    });
+
+    if (!envelope) {
+      throw new AppError(AppErrorCode.NOT_FOUND, {
+        message: 'Envelope not found',
+      });
+    }
+
+    const signatures = envelope.fields.map((field) => ({
+      fieldId: field.id,
+      signatureImageAsBase64: field.signature?.signatureImageAsBase64 ?? null,
+      typedSignature: field.signature?.typedSignature ?? null,
+    }));
+
+    return signatures;
+  });