Zig

Refresh Wish for Merchants OAuth2 Access Token

See more OAuth2 Examples

Demonstrates how to refresh a Wish OAuth2 access token.

Note: This example requires Chilkat v9.5.0.85.

Zig

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

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

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

    // See Get Wish OAuth2 Access Token
    // for sample code showing how to obtain a Wish access token for desktop apps.

    // This example assumes we previously obtained an OAuth2 access token for Wish.

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

    // The access token JSON looks something like this:

    // {
    //   "message": "",
    //   "code": 0,
    //   "data": {
    //     "access_token": "15af1c191c1243b029bc1660b5c08ce7",
    //     "scopes": [
    //       "epc:read",
    //       "epc:write",
    //       "fbs:read",
    //       "fbs:write",
    //       "fbw:read",
    //       "fbw:write",
    //       "infractions:read",
    //       "infractions:write",
    //       "insurance:read",
    //       "insurance:write",
    //       "loans:read",
    //       "loans:write",
    //       "merchant:read",
    //       "merchant:write",
    //       "notifications:read",
    //       "notifications:write",
    //       "orders:read",
    //       "orders:write",
    //       "payments:read",
    //       "payments:write",
    //       "penalties:read",
    //       "penalties:write",
    //       "product_boost:read",
    //       "product_boost:write",
    //       "products:read",
    //       "products:write",
    //       "ratings:read",
    //       "ratings:write",
    //       "returns:read",
    //       "returns:write",
    //       "tickets:read",
    //       "tickets:write"
    //     ],
    //     "merchant_id": "5eb3f605178f5be2c784fa02",
    //     "expiry_time": "2020-12-17T16:55:09.594+00:00",
    //     "refresh_token": "55a38e44df674a1e859891624b2c4c23"
    //   }
    // }

    const oauth2 = try chilkat.OAuth2.init();
    defer oauth2.deinit();

    // Note: In most OAuth2 implementations, the token endpoint is the same for both the
    // refresh request and the exchange-code-for-token request (which happens when getting
    // the OAuth2 token for the 1st time).   Wish uses a different URL for the refresh:
    oauth2.setTokenEndpoint("https://merchant.wish.com/api/v3/oauth/refresh_token");

    // The following uncommon option was added in Chilkat v9.5.0.85
    oauth2.setUncommonOptions("EXCHANGE_CODE_FOR_TOKEN_USING_GET");

    // Replace these with actual values.
    oauth2.setClientId("WISH-CLIENT-ID");
    oauth2.setClientSecret("WISH-CLIENT-SECRET");

    // Get the "refresh_token"
    oauth2.setRefreshToken(try json_token.stringOf(alloc, "data.refresh_token"));

    // Send the HTTP request to refresh the access token..
    oauth2.refreshAccessToken() catch {
        std.debug.print("{s}\n", .{try oauth2.getLastErrorText(alloc)});
        return;
    };

    // Save the new JSON access token response to a file.
    // The access + refresh tokens contained in this JSON will be needed for the next refresh.
    const sb_json = try chilkat.StringBuilder.init();
    defer sb_json.deinit();
    sb_json.append(try oauth2.getAccessTokenResponse(alloc)) catch {};
    sb_json.writeFile("qa_data/tokens/wish.json", "utf-8", false) catch {};

    std.debug.print("OAuth2 token refreshed!\n", .{});
    std.debug.print("New Access Token = {s}\n", .{try oauth2.getAccessToken(alloc)});
}