workspace("Pong")
    configurations {"Debug", "Release"}

project("Pong")
    newaction {
        trigger = "install",
        description = "Install the game to prefix.",
        execute = function()
            os.executef("mkdir -p %s/Pong/resources", prefix)
            os.executef("cp -v resources/* %s/Pong/resources/", prefix)
            os.executef("install -Dm755 bin/*/Pong %s/Pong/pong", prefix)
            os.exit(0)
        end
    }

    newaction {
        trigger = "clean",
        description = "Clean the work environment.",
        execute = function()
            os.executef("rm -rvf %s/obj", _MAIN_SCRIPT_DIR)
            os.executef("rm -rvf %s/bin", _MAIN_SCRIPT_DIR)
            os.executef("rm -rvf %s/app", _MAIN_SCRIPT_DIR)
            os.executef("rm -vf %s/Makefile", _MAIN_SCRIPT_DIR)
            os.executef("rm -vf %s/Pong.make", _MAIN_SCRIPT_DIR)
            os.executef("rm -rvf %s/flatpak_repo", _MAIN_SCRIPT_DIR)
            os.executef("rm -rvf %s/.flatpak-builder", _MAIN_SCRIPT_DIR)
            os.executef("rm -rvf %s/build-dir", _MAIN_SCRIPT_DIR)
            os.executef("rm -vf %s/*.flatpak", _MAIN_SCRIPT_DIR)
            os.exit(0)
        end
    }

    newaction {
        trigger = "check_deps",
        description = "Check if you have all the dependencies installed.",
        execute = function()
            os.exit(0)
        end
    }

    kind("WindowedApp")
    language("C")
    files {"src/*.c", "src/*.h", }
    includedirs {"raylib/src"}

    -- Prefix Option
    newoption {
        trigger     = "prefix",
        value       = "path",
        description = "Prefix for where the game is to be installed."
    }
    prefix = _OPTIONS["prefix"] or "app"

    -- Flatpak
    newoption {
        trigger     = "flatpak",
        value       = "bool",
        description = "Build a flatpak."
    }
    flatpak = _OPTIONS["flatpak"] or "false"

    -- Check for pkgconf
    Pkgconf_Result = os.executef("pkgconf --version")
    if(Pkgconf_Result == nil)
    then
        print("You do not have pkgconf installed. Aborting.")
        os.exit(1)
    end

    if (flatpak == true)
    then
        linkoptions {"-L/app/lib"}
    end

    linkoptions {"-lraylib", "`pkgconf --libs glfw3`", "`pkgconf --libs gl`", "`pkgconf --libs sdl2`", "`pkgconf --libs SDL2_mixer`"}

    -- Detect OS
    if(os.ishost("linux") == true) then
        links {RaylibStaticLibrary, "m", "pthread", "dl"}
    elseif(os.ishost("bsd") == true) then
        print("It is required you build raylib to an external glfw library when on bsd.")    
        -- Which BSD?
        BSD_OS = io.popen("uname")
        BSD_OS_NAME = BSD_OS:read("*a")
        BSD_OS:close()
        -- Check Result
        if(BSD_OS_NAME == "NetBSD\n") then
            links {RaylibStaticLibrary, "m", "pthread"}
        elseif(BSD_OS_NAME == "FreeBSD\n") then
            links {RaylibStaticLibrary, "m", "stdthreads", "pthread"}
        elseif(BSD_OS_NAME == "OpenBSD\n") then
	    
	    -- Work around the fact openbsd doesn't have c11 threads.
	    includedirs {"src/openbsd"}
	    files {"src/openbsd/*.c", "src/openbsd/*.h"}

	    -- Tell compiler where libraries are.
	    libdirs {"/usr/local/lib"}
            links {RaylibStaticLibrary, "m", "pthread"}

        else
            print("Couldn't figure out BSD, assuming freebsd.")
            links {RaylibStaticLibrary, "m", "stdthreads"}
        end
    elseif(os.ishost("windows") == true) then
        print("This script is expecting a MSYS2 or Cygwin environment. You've been warned.")
        links {RaylibStaticLibrary, "-lopengl32", "-lgdi32", "-lwinmm", "-lpthread", "-lm"}
        includedirs {"raylib/src", "src/windows"}
    else
        links {RaylibStaticLibrary, "m", "pthread", "dl"}
    end