const std = @import("std");
const testing = std.testing;
const transmission = @import("transmission.zig");

var gpa = std.heap.GeneralPurposeAllocator(.{}){};
const allocator = gpa.allocator();

export fn add(a: i32, b: i32) i32 {
    const clientOptions = transmission.ClientOptions{
        .host = "192.168.0.2",
        .port = 9091,
        .https = false,
    };
    var client = transmission.Client.init(allocator, clientOptions);
    defer client.deinit();

    //{
    //const body = transmission.session_get_raw(&client, null) catch |err| {
    //std.debug.print("error: {any}\n", .{err});
    //unreachable;
    //};
    //defer allocator.free(body);
    //std.debug.print("body: {s}\n", .{body});
    //}

    {
        const body = transmission.torrent_get_(&client, null) catch |err| {
            std.debug.print("error: {any}\n", .{err});
            unreachable;
        };
        //defer allocator.free(body);
        for (body.arguments.torrent_get.torrents.?) |t| {
            std.debug.print("name: {any}\n", .{t});
        }
    }

    //{
    //const body = transmission.torrent_get_(&client, null) catch |err| {
    //std.debug.print("error: {any}\n", .{err});
    //unreachable;
    //};
    ////defer allocator.free(body);
    //std.debug.print("body: {any}\n", .{body});
    //}

    //{
    //const body = transmission.session_set_raw(&client, .{ .peer_port = 51413 }) catch |err| {
    //std.debug.print("error: {any}\n", .{err});
    //unreachable;
    //};
    //defer allocator.free(body);
    //std.debug.print("body: {s}\n", .{body});
    //}

    return a + b;
}

export fn c_client_init(clientOptions: transmission.ClientOptions) ?*anyopaque {
    var client = allocator.create(transmission.Client) catch unreachable;
    client.* = transmission.Client.init(allocator, clientOptions);
    return @ptrCast(*anyopaque, client);
}

export fn c_client_deinit(client: ?*anyopaque) void {
    var real_client: *transmission.Client = @ptrCast(*transmission.Client, @alignCast(
        @alignOf(transmission.Client),
        client.?,
    ));
    real_client.*.deinit();
    allocator.destroy(real_client);
}

export fn c_session_get(client: ?*anyopaque, buf: [*]u8) c_int {
    var real_client: *transmission.Client = @ptrCast(*transmission.Client, @alignCast(
        @alignOf(transmission.Client),
        client.?,
    ));

    const body = transmission.session_get_raw(real_client, null) catch |err| {
        std.debug.print("error: {any}\n", .{err});
        unreachable;
    };
    defer allocator.free(body);

    std.debug.print("body: {s}\n", .{body});
    _ = buf;
    return 0;
}

export fn c_torrent_get(client: ?*anyopaque) [*:0]u8 {
    var real_client: *transmission.Client = @ptrCast(*transmission.Client, @alignCast(
        @alignOf(transmission.Client),
        client.?,
    ));

    const body = transmission.torrent_get_raw(real_client, null) catch |err| {
        std.debug.print("error: {any}\n", .{err});
        unreachable;
    };
    defer allocator.free(body);

    // TODO: use the same pointer of body but gotta go fast :(
    var foo = std.ArrayList(u8).init(allocator);
    foo.insertSlice(0, body) catch unreachable;

    //std.debug.print("body: {s}\n", .{body});
    return foo.toOwnedSliceSentinel(0) catch unreachable;
}

test "c api" {
    const clientOptions = transmission.ClientOptions{
        .host = "192.168.0.2",
        .port = 9091,
        .https = false,
    };
    var foo = c_client_init(clientOptions);
    _ = c_session_get(foo, undefined);
    _ = c_torrent_get(foo);
    c_client_deinit(foo);
}

test "basic add functionality" {
    try testing.expect(add(3, 7) == 10);
}