graphql-zig

A simple GraphQL client library. Can fetch endpoints and parse the response.

Supports typed and untyped responses. For typed response look at the example.

Note

I'll eventually try to expand this project to handle more GraphQL features, but for now this is all I need.

Example

You can also run the example directly from the example/ dir.

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

const Title = struct {
    english: ?[]const u8 = null,
    native: ?[]const u8 = null,
};

const Media = struct {
    siteUrl: []const u8,
    title: Title,
    description: ?[]const u8 = null,
};

const Page = struct {
    media: []const Media,
};

const PageData = struct {
    Page: Page,
};

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

    var client = try graphql.Client.init(
        allocator, io, "https://graphql.anilist.co", &.{}
    );
    defer client.deinit();

    var response = try client.executeTyped(
        PageData,
        \\query($search: String) {
        \\  Page {
        \\    media(search: $search, type: ANIME) {
        \\      siteUrl
        \\      title {
        \\        english
        \\        native
        \\      }
        \\      description
        \\    }
        \\  }
        \\}
    ,
        .{ .search = "Frieren" },
    );
    defer response.deinit();

    if (response.errors.len > 0) {
        for (response.errors) |err| {
            std.log.err("gql err: {s}", .{err.msg});
        }
        return error.GraphQLRequestFailed;
    }

    const page = response.data orelse return error.NoData;

    var stdout_buf: [4096]u8 = undefined;
    var stdout_writer = std.Io.File.stdout().writer(io, &stdout_buf);
    const stdout = &stdout_writer.interface;

    for (page.Page.media) |media| {
        try stdout.print("{s}\n", .{media.siteUrl});
        if (media.title.english) |en| try stdout.print("  en: {s}\n", .{en});
        if (media.title.native) |na| try stdout.print("  native: {s}\n", .{na});
    }
    try stdout.flush();
}

License

MIT