--!A cross-platform build utility based on Lua
--
-- Licensed to the Apache Software Foundation (ASF) under one
-- or more contributor license agreements.  See the NOTICE file
-- distributed with this work for additional information
-- regarding copyright ownership.  The ASF licenses this file
-- to you under the Apache License, Version 2.0 (the
-- "License"); you may not use this file except in compliance
-- with the License.  You may obtain a copy of the License at
--
--     http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
-- 
-- Copyright (C) 2015 - 2018, TBOOX Open Source Group.
--
-- @author      ruki
-- @file        xmake.lua
--

-- define rule: *.ui
rule("qt.ui")

    -- add rule: qt environment
    add_deps("qt.env")

    -- set extensions
    set_extensions(".ui")

    -- before load
    before_load(function (target)
        
        -- get uic
        local uic = path.join(target:data("qt").bindir, is_host("windows") and "uic.exe" or "uic")
        assert(uic and os.isexec(uic), "uic not found!")
        
        -- save uic
        target:data_set("qt.uic", uic)
    end)

    -- before build file
    before_build_file(function (target, sourcefile_ui, opt)

        -- imports
        import("core.base.option")
        import("core.project.config")
        import("core.project.depend")

        -- get uic
        local uic = target:data("qt.uic")

        -- get c++ header file for ui
        local headerfile_ui = path.join(config.buildir(), ".qt", "ui", target:name(), "ui_" .. path.basename(sourcefile_ui) .. ".h")
        local headerfile_dir = path.directory(headerfile_ui)

        -- add includedirs
        target:add("includedirs", path.absolute(headerfile_dir, os.projectdir()))

        -- add clean files
        target:data_add("qt.cleanfiles", headerfile_ui)

        -- need build this object?
        local dependfile = target:dependfile(headerfile_ui)
        local dependinfo = option.get("rebuild") and {} or (depend.load(dependfile) or {})
        if not depend.is_changed(dependinfo, {lastmtime = os.mtime(headerfile_ui)}) then
            return 
        end

        -- trace progress info
        if option.get("verbose") then
            cprint("${green}[%3d%%]:${dim} compiling.qt.ui %s", opt.progress, sourcefile_ui)
        else
            cprint("${green}[%3d%%]:${clear} compiling.qt.ui %s", opt.progress, sourcefile_ui)
        end

        -- ensure ui header file directory
        if not os.isdir(headerfile_dir) then
            os.mkdir(headerfile_dir)
        end

        -- compile ui 
        os.vrunv(uic, {sourcefile_ui, "-o", headerfile_ui})

        -- update files and values to the dependent file
        dependinfo.files = {sourcefile_ui}
        depend.save(dependinfo, dependfile)
    end)