const std = @import("std");
const SDL = @import("sdl2");

const Game = @import("Game.zig");
const MainMenu = @import("MainMenu.zig");

const State = @import("flow.zig").State;

pub fn main() !void {
    const stderr = std.io.getStdErr();
    defer stderr.close();

    // var gpa = std.heap.GeneralPurposeAllocator(.{}){};
    // defer _ = gpa.deinit();
    // const allocator = gpa.allocator();

    _ = SDL.SDL_Init(SDL.SDL_INIT_VIDEO | SDL.SDL_INIT_EVENTS | SDL.SDL_INIT_AUDIO);
    defer SDL.SDL_Quit();

    var window = SDL.SDL_CreateWindow(
        "USG",
        SDL.SDL_WINDOWPOS_CENTERED,
        SDL.SDL_WINDOWPOS_CENTERED,
        1280,
        720,
        SDL.SDL_WINDOW_SHOWN,
    ) orelse return;
    defer _ = SDL.SDL_DestroyWindow(window);

    var renderer = SDL.SDL_CreateRenderer(window, -1, SDL.SDL_RENDERER_PRESENTVSYNC | SDL.SDL_RENDERER_ACCELERATED) orelse return;
    defer _ = SDL.SDL_DestroyRenderer(renderer);

    var main_menu = MainMenu.init();
    var game = Game.init(renderer);

    var current_state: State = main_menu.state;

    _ = SDL.SDL_SetRenderDrawBlendMode(renderer, SDL.SDL_BLENDMODE_BLEND);

    mainLoop: while (true) {
        var ev: SDL.SDL_Event = undefined;

        while (SDL.SDL_PollEvent(&ev) != 0) {
            if (ev.type == SDL.SDL_QUIT)
                break :mainLoop;
        }

        _ = SDL.SDL_SetRenderDrawColor(renderer, 231, 247, 255, 0xFF);
        _ = SDL.SDL_RenderClear(renderer);

        current_state = switch (current_state) {
            State.main_menu => main_menu.tick(),
            State.game => game.tick(),
        };

        SDL.SDL_RenderPresent(renderer);
    }
}