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

const sdl = @import("lib/SDL.zig/build.zig");

const SemVer = std.SemanticVersion;

const target_version = "0.13.0";

pub fn build(b: *std.Build) void {
    const actual_version = builtin.zig_version;
    if (comptime actual_version.order(SemVer.parse(target_version) catch unreachable) != .eq) {
        @compileError("ZBA must be built with Zig v" ++ target_version ++ ".");
    }

    const target = b.standardTargetOptions(.{});
    const optimize = b.standardOptimizeOption(.{});

    const exe = b.addExecutable(.{
        .name = "zba",
        .root_source_file = b.path("src/main.zig"),
        .target = target,
        .optimize = optimize,
    });

    const sdk = sdl.init(b, null, null);
    const zgui = b.dependency("zgui", .{ .shared = false, .with_implot = true, .backend = .sdl2_opengl3 });
    const imgui = zgui.artifact("imgui");

    exe.root_module.addImport("known_folders", b.dependency("known-folders", .{}).module("known-folders")); // https://github.com/ziglibs/known-folders
    exe.root_module.addImport("datetime", b.dependency("zig-datetime", .{}).module("zig-datetime")); // https://github.com/frmdstryr/zig-datetime
    exe.root_module.addImport("clap", b.dependency("zig-clap", .{}).module("clap")); // https://github.com/Hejsil/zig-clap
    exe.root_module.addImport("zba-util", b.dependency("zba-util", .{}).module("zba-util")); // https://git.musuka.dev/paoda/zba-util
    exe.root_module.addImport("tomlz", b.dependency("tomlz", .{}).module("tomlz")); // https://github.com/mattyhall/tomlz
    exe.root_module.addImport("arm32", b.dependency("arm32", .{}).module("arm32")); // https://git.musuka.dev/paoda/arm32
    exe.root_module.addImport("gdbstub", b.dependency("zba-gdbstub", .{}).module("zba-gdbstub")); // https://git.musuka.dev/paoda/gdbstub
    exe.root_module.addImport("nfd", b.dependency("nfd", .{}).module("nfd")); // https://github.com/fabioarnold/nfd-zig
    exe.root_module.addImport("zgui", zgui.module("root")); // https://git.musuka.dev/paoda/zgui
    exe.root_module.addImport("sdl2", sdk.getNativeModule()); // https://github.com/MasterQ32/SDL.zig

    exe.root_module.addAnonymousImport("bitfield", .{ .root_source_file = b.path("lib/bitfield.zig") }); // https://github.com/FlorenceOS/
    exe.root_module.addAnonymousImport("gl", .{ .root_source_file = b.path("lib/gl.zig") }); // https://github.com/MasterQ32/zig-opengl
    exe.root_module.addAnonymousImport("example.toml", .{ .root_source_file = b.path("example.toml") });

    sdk.link(exe, .dynamic, .SDL2);
    sdk.link(imgui, .dynamic, .SDL2);
    exe.linkLibrary(imgui);

    b.installArtifact(exe);

    const run_cmd = b.addRunArtifact(exe);
    run_cmd.step.dependOn(b.getInstallStep());
    if (b.args) |args| run_cmd.addArgs(args);

    const run_step = b.step("run", "Run the app");
    run_step.dependOn(&run_cmd.step);

    const exe_tests = b.addTest(.{
        .root_source_file = b.path("src/main.zig"),
        .target = target,
        .optimize = optimize,
    });

    const test_step = b.step("test", "Run unit tests");
    test_step.dependOn(&exe_tests.step);
}