package("libsdl")

    set_homepage("https://www.libsdl.org/")
    set_description("Simple DirectMedia Layer")

    if is_plat("windows", "mingw") then
        set_urls("https://www.libsdl.org/release/SDL2-devel-$(version)-VC.zip")
        add_versions("2.0.8", "68505e1f7c16d8538e116405411205355a029dcf2df738dbbc768b2fe95d20fd")
        add_versions("2.0.12", "00c55a597cebdb9a4eb2723f2ad2387a4d7fd605e222c69b46099b15d5d8b32d")
        add_versions("2.0.14", "232071cf7d40546cde9daeddd0ec30e8a13254c3431be1f60e1cdab35a968824")
    else
        set_urls("https://www.libsdl.org/release/SDL2-$(version).zip")
        add_versions("2.0.8", "e6a7c71154c3001e318ba7ed4b98582de72ff970aca05abc9f45f7cbdc9088cb")
        add_versions("2.0.12", "476e84d6fcbc499cd1f4a2d3fd05a924abc165b5d0e0d53522c9604fe5a021aa")
        add_versions("2.0.14", "2c1e870d74e13dfdae870600bfcb6862a5eab4ea5b915144aff8d75a0f9bf046")
    end

    if is_plat("macosx") then
        add_frameworks("OpenGL", "CoreVideo", "CoreAudio", "AudioToolbox", "Carbon", "CoreGraphics", "ForceFeedback", "Metal", "AppKit", "IOKit", "CoreFoundation", "Foundation")
        add_syslinks("iconv")
    elseif is_plat("linux") then
        add_syslinks("pthread", "dl")
    elseif is_plat("windows", "mingw") then
        add_syslinks("gdi32", "user32", "winmm", "shell32")
    end
    add_includedirs("include", "include/SDL2")

    add_configs("use_sdlmain", {description = "Use SDL_main entry", default = true, type = "boolean"})

    on_load(function (package)
        if package:config("use_sdlmain") then
            package:add("links", "SDL2main", "SDL2")
        else
            package:add("links", "SDL2")
            package:add("defines", "SDL_MAIN_HANDLED")
        end

        if package:is_plat("macosx") and package:version():ge("2.0.14") then
            package:add("frameworks", "CoreHaptics", "GameController")
        end
    end)

    on_fetch("linux", "macosx", function (package, opt)
        if opt.system then
            -- use sdl2-config
            local sdl2conf = try {function() return os.iorunv("sdl2-config", {"--version", "--cflags", "--libs"}) end}
            if sdl2conf then
                sdl2conf = os.argv(sdl2conf)
                local sdl2ver = table.remove(sdl2conf, 1)

                local result = {}
                result.version = sdl2ver

                for _, flag in ipairs(sdl2conf) do
                    if flag:startswith("-L") and #flag > 2 then
                        -- get linkdirs
                        local linkdir = flag:sub(3)
                        if linkdir and os.isdir(linkdir) then
                            result.linkdirs = result.linkdirs or {}
                            table.insert(result.linkdirs, linkdir)
                        end
                    elseif flag:startswith("-I") and #flag > 2 then
                        -- get includedirs
                        local includedir = flag:sub(3)
                        if includedir and os.isdir(includedir) then
                            result.includedirs = result.includedirs or {}
                            table.insert(result.includedirs, includedir)
                        end
                    elseif flag:startswith("-l") and #flag > 2 then
                        -- get links
                        local link = flag:sub(3)
                        result.links = result.links or {}
                        table.insert(result.links, link)
                    elseif flag:startswith("-D") and #flag > 2 then
                        -- get defines
                        local define = flag:sub(3)
                        result.defines = result.defines or {}
                        table.insert(result.defines, define)
                    end
                end

                return result
            end

            -- finding using sdl2-config didn't work, fallback on pkgconfig
            if package.find_package then
                return package:find_package("pkgconfig::sdl2", opt)
            else
                return find_package("pkgconfig::sdl2", opt)
            end
        end
    end)

    on_install("windows", "mingw", function (package)
        local arch = package:arch()
        if package:is_plat("mingw") then
            arch = (arch == "x86_64") and "x64" or "x86"
        end
        os.cp("include/*", package:installdir("include/SDL2"))
        os.cp(path.join("lib", arch, "*.lib"), package:installdir("lib"))
        os.cp(path.join("lib", arch, "*.dll"), package:installdir("bin"))
    end)

    on_install("macosx", "linux", function (package)
        local configs = {}
        if package:config("shared") then
            table.insert(configs, "--enable-shared=yes")
        else
            table.insert(configs, "--enable-shared=no")
        end
        if package:is_plat("linux") and package:config("pic") ~= false then
            table.insert(configs, "--with-pic")
        end
        if package:is_plat("linux") then
            -- fix Missing Xext.h if some X libs are found
            table.insert(configs, "--without-x")
        end
        import("package.tools.autoconf").install(package, configs)
    end)

    on_test(function (package)
        assert(package:has_cfuncs("SDL_Init", {includes = "SDL2/SDL.h", configs = {defines = "SDL_MAIN_HANDLED"}}))
    end)