Google-SDK

Warning

Google-SDK is not a primary focus of mine, and, although I do maintain and occasionally expand upon the library, support may vary.

Google-SDK is a D library for Google Drive and Gmail. It manages OAuth sessions, file browsing, read/write operations, and Gmail messages and labels without requiring large wrapper layers.

Features

• Drive: Authenticate, browse folders and files, read bytes, write bytes, and export Google Workspace-native files.
• Gmail: List, get, send, trash, and delete messages and threads. Manage labels and apply them to messages or threads.
• Docs And Sheets: Detect MIME types and export Google Docs as plain text or Google Sheets as CSV. File.text dispatches automatically when the format is readable.
• Error Handling: Typed exceptions for auth, permission, not-found, rate-limit, and protocol errors in both Drive and Gmail.

Usage

dub add google-sdk

Create an OAuth client JSON from the Google Cloud Console and keep it handy.

Connect To Drive

import conductor.oauth : OAuth;
import google.drive;
import std.file : readText;
import std.json : parseJSON;

auto oauth = OAuth.fromJSON(parseJSON(readText("oauth_client.json")));
auto session = new Session("MyApp", oauth);
auto identity = session.login();
scope (exit) identity.logout();

Browse Files

Folder[] folders = identity.folders();
File[] files = identity.listFiles("root");

Read Or Write

File file = identity.file("drive-file-id");

ubyte[] bytes = file.read();
string text = file.textReadable ? file.text : null;

File newFile = new File(identity, "data.txt", "text/plain");
newFile.write(cast(const(ubyte)[])"hello");

Connect To Gmail

import google.gmail;

auto gmailSession = new google.gmail.Session("MyApp", oauth);
auto gmailIdentity = gmailSession.login();
scope (exit) gmailIdentity.logout();

Manage Messages

Message[] inbox = gmailIdentity.messages("label:inbox");
Message msg = gmailIdentity.message(inbox[0].id);

gmailIdentity.trash(msg);
gmailIdentity.modifyLabels(msg, ["SPAM"], ["INBOX"]);

Manage Labels

Label[] allLabels = gmailIdentity.labels();

Label label = new Label();
label.name = "Project-A";
gmailIdentity.create(label);

gmailIdentity.remove(label);

Docs And Sheets

import google.docs;
import google.sheets;

assert(google.docs.supports("application/vnd.google-apps.document"));
assert(google.sheets.supports("application/vnd.google-apps.spreadsheet"));

Scope

• Docs support is export-only and currently targets plain text.
• Sheets support is export-only and currently targets CSV.
• Other Google Workspace-native formats remain metadata-aware but not text-readable or writable.
• This library does not try to provide full Docs or Sheets editing APIs yet.

License

Google-SDK is licensed under AGPL-3.0.