const std = @import("std");
const widow = @import("widow");
const event = widow.event;
var gpa_allocator: std.heap.DebugAllocator(.{}) = .init;

pub fn main() !void {
    defer std.debug.assert(gpa_allocator.deinit() == .ok);
    const allocator = gpa_allocator.allocator();
    // first we need to preform some platform specific initialization.
    // and build a context for the current platform.
    // the context also keep a copy of the allocator you pass it
    // to use it for all allocations done by the library.
    const ctx = try widow.createWidowContext(allocator);
    defer widow.destroyWidowContext(allocator, ctx);

    // the window will require an event queue to
    // send events.
    var ev_queue = try event.EventQueue.init(allocator, 256);
    defer ev_queue.deinit();

    // create a WindowBuilder.
    var builder = widow.WindowBuilder.init();
    // customize the window.
    var mywindow = builder.withTitle("Simple Window")
        .withSize(800, 600)
        .withResize(true)
        .withDPIAware(true)
        .withPosition(200, 200)
        .withEventQueue(&ev_queue)
        .build(ctx, null) catch |err| {
        std.debug.print("Failed to build the window,{}\n", .{err});
        return;
    };

    // closes the window when done.
    defer mywindow.deinit();

    var event: event.Event = undefined;
    event_loop: while (true) {
        // wait until an event is posted.
        try mywindow.waitEvent();
        while (ev_queue.popEvent(&event)) {
            switch (event) {
                .WindowClose => |window_id| {
                    std.debug.print("closing Window #{}\n", .{window_id});
                    break :event_loop;
                },
                .Keyboard => |*key| {
                    if (key.state.isPressed()) {
                        if (key.keycode == .Q) {
                            // let's request closing the window on
                            // pressing Q key
                            mywindow.queueCloseEvent();
                        }
                    }
                },
                else => continue,
            }
        }
    }
}