package("icu4c")
    set_homepage("http://site.icu-project.org/")
    set_description("C/C++ libraries for Unicode and globalization.")

    add_urls("https://github.com/unicode-org/icu/releases/download/release-$(version)-src.tgz", {version = function (version)
            return (version:gsub("%.", "-")) .. "/icu4c-" .. (version:gsub("%.", "_"))
        end})
    add_versions("75.1", "cb968df3e4d2e87e8b11c49a5d01c787bd13b9545280fc6642f826527618caef")
    add_versions("73.2", "818a80712ed3caacd9b652305e01afc7fa167e6f2e94996da44b90c2ab604ce1")
    add_versions("73.1", "a457431de164b4aa7eca00ed134d00dfbf88a77c6986a10ae7774fc076bb8c45")
    add_versions("72.1", "a2d2d38217092a7ed56635e34467f92f976b370e20182ad325edea6681a71d68")
    add_versions("71.1", "67a7e6e51f61faf1306b6935333e13b2c48abd8da6d2f46ce6adca24b1e21ebf")
    add_versions("70.1", "8d205428c17bf13bb535300669ed28b338a157b1c01ae66d31d0d3e2d47c3fd5")
    add_versions("69.1", "4cba7b7acd1d3c42c44bb0c14be6637098c7faf2b330ce876bc5f3b915d09745")
    add_versions("68.2", "c79193dee3907a2199b8296a93b52c5cb74332c26f3d167269487680d479d625")
    add_versions("68.1", "a9f2e3d8b4434b8e53878b4308bd1e6ee51c9c7042e2b1a376abefb6fbb29f2d")
    add_versions("64.2", "627d5d8478e6d96fc8c90fed4851239079a561a6a8b9e48b0892f24e82d31d6c")

    add_patches("69.1", path.join(os.scriptdir(), "patches", "69.1", "replace-py-3.patch"), "ae27a55b0e79a8420024d6d349a7bae850e1dd403a8e1131e711c405ddb099b9")
    add_patches("70.1", path.join(os.scriptdir(), "patches", "70.1", "replace-py-3.patch"), "6469739da001721122b62af513370ed62901caf43af127de3f27ea2128830e35")
    if is_plat("mingw") then
        add_patches(">=69.1", path.join(os.scriptdir(), "patches", "72.1", "mingw.patch"), "9ddbe7f691224ccf69f8c0218f788f0a39ab8f1375cc9aad2cc92664ffcf46a5")
    end

    if is_plat("mingw") and is_subhost("msys") then
        add_extsources("pacman::icu")
    elseif is_plat("linux") then
        add_extsources("pacman::icu", "apt::libicu-dev")
    elseif is_plat("macosx") then
        add_extsources("brew::icu4c")
    end

    add_configs("tools", {description = "Build tools.", default = false, type = "boolean"})
    if is_plat("windows") then
        add_configs("shared", {description = "Build shared library.", default = true, type = "boolean", readonly = true})
    end

    if is_plat("linux") then
        add_syslinks("dl")
    end

    on_load(function (package)
        if package:is_plat("windows") then
            if package:config("tools") then
                package:add("deps", "python 3.x", {kind = "binary"})
            end

            if package:has_runtime("MTd", "MDd") then
                wprint("MTd/MDd runtime force to use debug package")
                package:config_set("debug", true)
            end
        end

        local libsuffix = package:is_debug() and package:is_plat("mingw", "windows") and "d" or ""
        package:add("links", "icutu" .. libsuffix, "icuio" .. libsuffix)
        if package:is_plat("mingw", "windows") then
            package:add("links", "icuin" .. libsuffix, "icuuc" .. libsuffix, "icudt" .. libsuffix)
        else
            package:add("links", "icui18n" .. libsuffix, "icuuc" .. libsuffix, "icudata" .. libsuffix)
        end
    end)

    on_install("windows", function (package)
        import("package.tools.msbuild")

        local projectfiles = os.files("source/**.vcxproj")
        local sln = path.join("source", "allinone", "allinone.sln")
        table.join2(projectfiles, sln, os.files("source/**.props"))

        if package:is_cross() then
            -- icu build requires native tools
            local configs = {
                sln,
                "/p:Configuration=Release",
                "/target:pkgdata,genrb"
            }

            local arch_prev = package:arch()
            package:arch_set(os.arch())
            msbuild.build(package, configs, {upgrade = projectfiles})
            package:arch_set(arch_prev)
        end

        if package:has_runtime("MT", "MTd") then
            local files = {
                "source/common/common.vcxproj",
                "source/i18n/i18n.vcxproj",
                "source/extra/uconv/uconv.vcxproj",
                "source/io/io.vcxproj",
                "source/stubdata/stubdata.vcxproj",
            }
            for _, vcxproj in ipairs(files) do
                io.replace(vcxproj, "MultiThreadedDLL", "MultiThreaded", {plain = true})
                io.replace(vcxproj, "MultiThreadedDebugDLL", "MultiThreadedDebug", {plain = true})
            end
        end

        local configs = {
            sln,
            "/p:SkipUWP=True",
            "/p:_IsNativeEnvironment=true",
        }

        if not package:config("tools") then
            table.insert(configs, "/target:common,i18n,uconv,io,stubdata")
        end
        msbuild.build(package, configs, {upgrade = projectfiles})

        local suffix = package:is_arch("arm.*") and "ARM" or ""
        if package:is_arch(".*64") then
            suffix = suffix .. "64"
        end

        os.vcp("include", package:installdir())
        os.vcp("bin" .. suffix .. "/*", package:installdir("bin"))
        os.vcp("lib" .. suffix .. "/*", package:installdir("lib"))
        package:addenv("PATH", "bin")
    end)

    on_install("macosx", "linux", "mingw@msys", function (package)
        import("package.tools.autoconf")

        os.cd("source")
        local configs = {"--disable-samples", "--disable-tests"}
        if package:debug() then
            table.insert(configs, "--enable-debug")
            table.insert(configs, "--disable-release")
        end
        if package:config("shared") then
            table.insert(configs, "--enable-shared")
            table.insert(configs, "--disable-static")
        else
            table.insert(configs, "--disable-shared")
            table.insert(configs, "--enable-static")
        end
        if package:is_plat("mingw") then
            table.insert(configs, "--with-data-packaging=dll")
        end


        local envs = {}
        local cxxflags = "-std=gnu++17"
        if package:is_plat("linux") and package:config("pic") ~= false then
            envs = autoconf.buildenvs(package, {cxflags = "-fPIC", cxxflags = cxxflags})
        else
            envs = autoconf.buildenvs(package, {cxxflags = cxxflags})
        end
        -- suppress ar errors when passing --toolchain=clang
        envs.ARFLAGS = nil
        autoconf.install(package, configs, {envs = envs})
        package:addenv("PATH", "bin")
    end)

    on_test(function (package)
        assert(package:has_cfuncs("ucnv_convert", {includes = "unicode/ucnv.h"}))
    end)