Zig

Lookup Google Drive Folder ID Given a Folder Path

See more Google Drive Examples

Demonstrates how to find the Google Drive folder ID given a Folder Path.

This example demonstrates that we cannot simply query by folder name. (We can if every folder name is unique, but if not...) For example, imagine we have the following directory structure on Google Drive:

/AAWorkArea
/AAWorkArea/FolderA
/AAWorkArea/FolderB
/Folder2
/Folder2/FolderA

There are two directories named "FolderA". One is contained within AAWorkArea, and one is contained within "Folder2". To say it differently: One has the parent "AAWorkArea" and the other's parent is "Folder2".

To find the id of "/AAWorkArea/FolderA", we need to first find the id for "AAWorkArea", and then find the id for the folder with name="FolderA" and with AAWorkArea's id in FolderA's parents.

Zig

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

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

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

    // This example uses a previously obtained access token having permission for the
    // Google Drive scope.

    const g_auth = try chilkat.AuthGoogle.init();
    defer g_auth.deinit();
    g_auth.setAccessToken("GOOGLE-DRIVE-ACCESS-TOKEN");

    const rest = try chilkat.Rest.init();
    defer rest.deinit();

    // Connect using TLS.
    const b_auto_reconnect = true;
    try rest.connect("www.googleapis.com", 443, true, b_auto_reconnect);

    // Provide the authentication credentials (i.e. the access token)
    rest.setAuthGoogle(g_auth) catch {};

    const json = try chilkat.JsonObject.init();
    defer json.deinit();
    json.setEmitCompact(false);

    // Get the AAWorkArea folder that is in the Google Drive root.
    rest.addQueryParam("q", "'root' in parents and name='AAWorkArea'") catch {};
    var json_response: [:0]const u8 = rest.fullRequestNoBody(alloc, "GET", "/drive/v3/files") catch {
        std.debug.print("{s}\n", .{try rest.getLastErrorText(alloc)});
        return;
    };

    json.load(json_response) catch {};
    std.debug.print("{s}\n", .{try json.emit(alloc)});
    std.debug.print("name: {s}\n", .{try json.stringOf(alloc, "files[0].name")});
    std.debug.print("id: {s}\n", .{try json.stringOf(alloc, "files[0].id")});
    std.debug.print("mimeType: {s}\n", .{try json.stringOf(alloc, "files[0].mimeType")});
    std.debug.print("-\n", .{});

    rest.clearAllQueryParams() catch {};

    // Now that we know the ID for the AAWorkarea directory, get the id for the FolderA having AAWorkArea as the parent.
    const sb_query = try chilkat.StringBuilder.init();
    defer sb_query.deinit();
    sb_query.append("name = 'FolderA' and '") catch {};
    sb_query.append(try json.stringOf(alloc, "files[0].id")) catch {};
    sb_query.append("' in parents") catch {};
    rest.addQueryParamSb("q", sb_query) catch {};

    json_response = rest.fullRequestNoBody(alloc, "GET", "/drive/v3/files") catch {
        std.debug.print("{s}\n", .{try rest.getLastErrorText(alloc)});
        return;
    };

    json.load(json_response) catch {};
    std.debug.print("{s}\n", .{try json.emit(alloc)});
    std.debug.print("name: {s}\n", .{try json.stringOf(alloc, "files[0].name")});
    std.debug.print("id: {s}\n", .{try json.stringOf(alloc, "files[0].id")});
    std.debug.print("mimeType: {s}\n", .{try json.stringOf(alloc, "files[0].mimeType")});
    std.debug.print("-\n", .{});
}