const std = @import("std");
const Sdk = @import("Sdk.zig"); // Import the Sdk at build time

pub fn build(b: *std.build.Builder) !void {
    // Determine compilation target
    const target = b.standardTargetOptions(.{});
  
    // Create a new instance of the SDL2 Sdk
    const sdk = Sdk.init(b);

    // Create executable for our example
    const demo_basic = b.addExecutable("demo-basic", "my-game.zig");
    
    demo_basic.setTarget(target);   // must be done before calling sdk.link
    sdk.link(demo_basic, .dynamic); // link SDL2 as a shared library

    // Add "sdl2" package that exposes the SDL2 api (like SDL_Init or SDL_CreateWindow)
    demo_basic.addPackage(sdk.getNativePackage("sdl2")); 

    // Install the executable into the prefix when invoking "zig build"
    demo_basic.install();
}

const std = @import("std");
const SDL = @import("sdl2"); // Add this package by using sdk.getNativePackage

pub fn main() !void {
    if (SDL.SDL_Init(SDL.SDL_INIT_VIDEO | SDL.SDL_INIT_EVENTS | SDL.SDL_INIT_AUDIO) < 0)
        sdlPanic();
    defer SDL.SDL_Quit();

    var window = SDL.SDL_CreateWindow(
        "SDL2 Native Demo",
        SDL.SDL_WINDOWPOS_CENTERED, SDL.SDL_WINDOWPOS_CENTERED,
        640, 480,
        SDL.SDL_WINDOW_SHOWN,
    ) orelse sdlPanic();
    defer _ = SDL.SDL_DestroyWindow(window);

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

    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, 0xF7, 0xA4, 0x1D, 0xFF);
        _ = SDL.SDL_RenderClear(renderer);

        SDL.SDL_RenderPresent(renderer);
    }
}

fn sdlPanic() noreturn {
    const str = @as(?[*:0]const u8, SDL.SDL_GetError()) orelse "unknown error";
    @panic(std.mem.sliceTo(str, 0));
}

const std = @import("std");
const SDL = @import("sdl2"); // Add this package by using sdk.getWrapperPackage

pub fn main() !void {
    try SDL.init(.{
        .video = true,
        .events = true,
        .audio = true,
    });
    defer SDL.quit();

    var window = try SDL.createWindow(
        "SDL2 Wrapper Demo",
        .{ .centered = {} }, .{ .centered = {} },
        640, 480,
        .{ .shown = true },
    );
    defer window.destroy();

    var renderer = try SDL.createRenderer(window, null, .{ .accelerated = true });
    defer renderer.destroy();

    mainLoop: while (true) {
        while (SDL.pollEvent()) |ev| {
            switch (ev) {
                .quit => break :mainLoop,
                else => {},
            }
        }

        try renderer.setColorRGB(0xF7, 0xA4, 0x1D);
        try renderer.clear();

        renderer.present();
    }
}

/// Just call `Sdk.init(b)` to obtain a handle to the Sdk!
const Sdk = @This();

/// Creates a instance of the Sdk and initializes internal steps.
/// Initialize once, use everywhere (in your `build` function).
pub fn init(b: *Builder) *Sdk

/// Returns a package with the raw SDL api with proper argument types, but no functional/logical changes
/// for a more *ziggy* feeling.
/// This is similar to the *C import* result.
pub fn getNativePackage(sdk: *Sdk, package_name: []const u8) std.build.Pkg;

/// Returns the smart wrapper for the SDL api. Contains convenient zig types, tagged unions and so on.
pub fn getWrapperPackage(sdk: *Sdk, package_name: []const u8) std.build.Pkg ;

/// Links SDL2 to the given exe and adds required installs if necessary.
/// **Important:** The target of the `exe` must already be set, otherwise the Sdk will do the wrong thing!
pub fn link(sdk: *Sdk, exe: *LibExeObjStep, linkage: std.build.LibExeObjStep.Linkage) void;