const std = @import("std");

pub fn build(b: *std.Build) void {
    const target = b.standardTargetOptions(.{});
    const optimize = b.standardOptimizeOption(.{});

    const triple = target.result;
    if (triple.os.tag != .linux or triple.cpu.arch != .x86_64) {
        std.log.warn("The build file only supports Linux x86-64 right now.\n", .{});
        std.log.warn("You can extend the build.zig to call the appropriate platform scripts in 3rd/libomtnet/build/ and 3rd/libomt/build.\n", .{});
    }

    // Build libomtnet
    const libomtnet_build = b.addSystemCommand(&.{
        "bash",
        "buildall.sh",
    });
    libomtnet_build.cwd = b.path("3rd/libomtnet/build");

    // Build libomt
    const libomt_build = b.addSystemCommand(&.{
        "bash",
        "buildlinuxx64.sh",
    });
    libomt_build.cwd = b.path("3rd/libomt/build");
    libomt_build.step.dependOn(&libomtnet_build.step);

    // Define executable
    const exe = b.addExecutable(.{
        .name = "omtoy",
        .root_module = b.createModule(.{
            .root_source_file = b.path("src/main.zig"),
            .target = target,
            .optimize = optimize,
        }),
    });

    // Link libomt with the build
    {
        const omt_output_dir = b.path("3rd/libomt/bin/Release/net8.0/linux-x64/publish");
        // exe.step.dependOn(&libomt_build.step);
        exe.addIncludePath(omt_output_dir);
        exe.addLibraryPath(omt_output_dir);
        exe.linkSystemLibrary("omt");
        exe.linkLibC();
    }

    b.installArtifact(exe);

    // Manual build step for libomt dependencies
    const build_omt_step = b.step("build-omt", "Build libomt and libomtnet");
    build_omt_step.dependOn(&libomt_build.step);

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

    run_cmd.step.dependOn(b.getInstallStep());

    if (b.args) |args| {
        run_cmd.addArgs(args);
    }

    const exe_tests = b.addTest(.{
        .root_module = exe.root_module,
    });

    const run_exe_tests = b.addRunArtifact(exe_tests);

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