Zig

DocuSign: Requesting a Signature via Email (Remote Signing)

See more DocuSign Examples

This code example demonstrates the simplest and quickest workflow for requesting a signature for a document via email. The email will contain a signing link the recipient can use to electronically sign a document from their mobile or desktop computer. Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    const http = try chilkat.Http.init();
    defer http.deinit();

    // Implements the following CURL command:

    // curl --request POST https://demo.docusign.net/restapi/v2.1/accounts/${accountId}/envelopes \
    //      --header "Authorization: Bearer ${accessToken}" \
    //      --header "Content-Type: application/json" \
    //      --data '{
    //     "emailSubject": "Please sign this document",
    //     "documents": [
    //         {
    //             "documentBase64": "JVBERi0xLjMKMyAwIG9iag ... dGFydHhyZWYKNjk5CiUlRU9GCg==",
    //             "name": "Lorem Ipsum",
    //             "fileExtension": "pdf",
    //             "documentId": "1"
    //         }
    //     ],
    //     "recipients": {
    //         "signers": [
    //             {
    //                 "email": "joe_sample@example.com",
    //                 "name": "Joe Sample",
    //                 "recipientId": "1",
    //                 "routingOrder": "1",
    //                 "tabs": {
    //                     "signHereTabs": [
    //                         {
    //                             "documentId": "1", "pageNumber": "1",
    //                             "recipientId": "1", "tabLabel": "SignHereTab",
    //                             "xPosition": "195", "yPosition": "147"
    //                         }
    //                     ]
    //                 }
    //             }
    //         ]
    //     },
    //     "status": "sent"
    // }'

    // Use this online tool to generate code from sample JSON:
    // Generate Code to Create JSON

    // The following JSON is sent in the request body.

    // {
    //   "emailSubject": "Please sign this document",
    //   "documents": [
    //     {
    //       "documentBase64": "JVBERi0xLjMKMyAwIG9iag ... dGFydHhyZWYKNjk5CiUlRU9GCg==",
    //       "name": "Lorem Ipsum",
    //       "fileExtension": "pdf",
    //       "documentId": "1"
    //     }
    //   ],
    //   "recipients": {
    //     "signers": [
    //       {
    //         "email": "joe_sample@example.com",
    //         "name": "Joe Sample",
    //         "recipientId": "1",
    //         "routingOrder": "1",
    //         "tabs": {
    //           "signHereTabs": [
    //             {
    //               "documentId": "1",
    //               "pageNumber": "1",
    //               "recipientId": "1",
    //               "tabLabel": "SignHereTab",
    //               "xPosition": "195",
    //               "yPosition": "147"
    //             }
    //           ]
    //         }
    //       }
    //     ]
    //   },
    //   "status": "sent"
    // }

    // Load a PDF to be signed.
    const pdf_data = try chilkat.BinData.init();
    defer pdf_data.deinit();
    pdf_data.loadFile("qa_data/pdf/helloWorld.pdf") catch {
        std.debug.print("Failed to load local PDF file.\n", .{});
        return;
    };

    const json = try chilkat.JsonObject.init();
    defer json.deinit();
    json.updateString("emailSubject", "Please sign this document") catch {};
    json.updateString("documents[0].documentBase64", try pdf_data.getEncoded(alloc, "base64")) catch {};
    json.updateString("documents[0].name", "Lorem Ipsum") catch {};
    json.updateString("documents[0].fileExtension", "pdf") catch {};
    json.updateString("documents[0].documentId", "1") catch {};
    json.updateString("recipients.signers[0].email", "joe_sample@example.com") catch {};
    json.updateString("recipients.signers[0].name", "Joe Sample") catch {};
    json.updateString("recipients.signers[0].recipientId", "1") catch {};
    json.updateString("recipients.signers[0].routingOrder", "1") catch {};
    json.updateString("recipients.signers[0].tabs.signHereTabs[0].documentId", "1") catch {};
    json.updateString("recipients.signers[0].tabs.signHereTabs[0].pageNumber", "1") catch {};
    json.updateString("recipients.signers[0].tabs.signHereTabs[0].recipientId", "1") catch {};
    json.updateString("recipients.signers[0].tabs.signHereTabs[0].tabLabel", "SignHereTab") catch {};
    json.updateString("recipients.signers[0].tabs.signHereTabs[0].xPosition", "195") catch {};
    json.updateString("recipients.signers[0].tabs.signHereTabs[0].yPosition", "147") catch {};
    json.updateString("status", "sent") catch {};

    // Get our previously obtained OAuth2 access token, which should contain JSON like this:
    // {
    //   "access_token": "eyJ0eXA....YQyig",
    //   "token_type": "Bearer",
    //   "refresh_token": "eyJ0eXA....auE3eHKg",
    //   "expires_in": 28800
    // }

    const json_token = try chilkat.JsonObject.init();
    defer json_token.deinit();
    try json_token.loadFile("qa_data/tokens/docusign.json");

    const sb_auth = try chilkat.StringBuilder.init();
    defer sb_auth.deinit();
    sb_auth.append("Bearer ") catch {};
    sb_auth.append(try json_token.stringOf(alloc, "access_token")) catch {};

    http.setRequestHeader("Authorization", try sb_auth.getAsString(alloc));
    http.setRequestHeader("Content-Type", "application/json");

    // Don't forget to modify this line to use your account ID
    const resp = try chilkat.HttpResponse.init();
    defer resp.deinit();
    http.httpJson("POST", "https://demo.docusign.net/restapi/v2.1/accounts/${accountId}/envelopes", json, "application/json", resp) catch {
        std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
        return;
    };

    const sb_response_body = try chilkat.StringBuilder.init();
    defer sb_response_body.deinit();
    resp.getBodySb(sb_response_body) catch {};
    const j_resp = try chilkat.JsonObject.init();
    defer j_resp.deinit();
    j_resp.loadSb(sb_response_body) catch {};
    j_resp.setEmitCompact(false);

    std.debug.print("Response Body:\n", .{});
    std.debug.print("{s}\n", .{try j_resp.emit(alloc)});

    const resp_status_code = resp.getStatusCode();
    std.debug.print("Response Status Code = {d}\n", .{resp_status_code});
    if (resp_status_code >= 400) {
        std.debug.print("Response Header:\n", .{});
        std.debug.print("{s}\n", .{try resp.getHeader(alloc)});
        std.debug.print("Failed.\n", .{});
        return;
    }

    // Sample JSON response:
    // (Sample code for parsing the JSON response is shown below)

    // {
    //   "envelopeId": "d51cfdab-22ed-4832-bf68-446c44077ffc",
    //   "uri": "/envelopes/d51cfdab-22ed-4832-bf68-446c44077ffc",
    //   "statusDateTime": "2018-04-17T16:31:51.8830000Z",
    //   "status": "sent"
    // }

    // Sample code for parsing the JSON response...
    // Use the following online tool to generate parsing code from sample JSON:
    // Generate Parsing Code from JSON

    _ = try j_resp.stringOf(alloc, "envelopeId");
    _ = try j_resp.stringOf(alloc, "uri");
    _ = try j_resp.stringOf(alloc, "statusDateTime");
    _ = try j_resp.stringOf(alloc, "status");
}