Sample code for 30+ languages & platforms
Zig

Google OAuth2 v3 userinfo (https://www.googleapis.com/oauth2/v3/userinfo)

See more Google APIs Examples

Demonstrates how to get the Google OAuth2 v3 userinfo.

Important: Make sure the OAuth2 access token included "profile" in the list of scopes.

Chilkat Zig Downloads

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.

    // It is assumed we previously obtained an OAuth2 access token.
    // This example loads the JSON access token file
    // originally obtained by this example: Get Google People API OAuth2 Access Token
    // or refreshed by this example: Refresh Google People API OAuth2 Access Token

    const json_token = try chilkat.JsonObject.init();
    defer json_token.deinit();
    json_token.loadFile("qa_data/tokens/googlePeople.json") catch {
        std.debug.print("Failed to load googleContacts.json\n", .{});
        return;
    };

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

    // -------------------------------------------------------------------------------------
    // Make sure the access token was obtained with "profile" included in the list of scopes.
    // -------------------------------------------------------------------------------------
    http.setAuthToken(try json_token.stringOf(alloc, "access_token"));

    const sb_response_body = try chilkat.StringBuilder.init();
    defer sb_response_body.deinit();
    http.quickGetSb("https://www.googleapis.com/oauth2/v3/userinfo", sb_response_body) catch {
        std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
        std.debug.print("{s}\n", .{try sb_response_body.getAsString(alloc)});
        return;
    };

    // Sample JSON Response

    const json = try chilkat.JsonObject.init();
    defer json.deinit();
    json.setEmitCompact(false);
    json.load(try sb_response_body.getAsString(alloc)) catch {};
    std.debug.print("{s}\n", .{try json.emit(alloc)});

    // Sample response:

    // {
    //   "sub": "119999690625687999964",
    //   "name": "Matt",
    //   "given_name": "Matt",
    //   "picture": "https://lh3.googleusercontent.com/-b4...eg3Zjo/AAAAAAAAAAI/AAAAAAAAAAA/AMZuu....3RpdA/s96-c/photo.jpg",
    //   "locale": "en"
    // }
    //
}