--!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 - 2019, TBOOX Open Source Group.
--
-- @author      ruki
-- @file        find_rc.lua
--

-- imports
import("core.project.config")
import("lib.detect.find_program")
import("lib.detect.find_programver")

-- find rc 
--
-- @param opt   the argument options, .e.g {version = true}
--
-- @return      program, version
--
-- @code 
--
-- local rc = find_rc()
-- 
-- @endcode
--
function main(opt)

    -- init options
    opt         = opt or {}
    opt.check   = opt.check or "-?"
    opt.command = opt.command or "-?"
    opt.parse   = opt.parse or function (output) return output:match("Version (%d+%.?%d*%.?%d*.-)%s") end
    
    -- fix rc.exe missing issues
    --
    -- @see https://github.com/xmake-io/xmake/issues/225
    -- https://stackoverflow.com/questions/43847542/rc-exe-no-longer-found-in-vs-2015-command-prompt/45319119
    --
    -- patch sdk bin directory to path environment
    --
    -- .e.g C:\Program Files (x86)\Windows Kits\10\bin\10.0.17134.0\x64
    --
    local arch = opt.arch or config.arch() or os.arch()
    local vcvarsall = config.get("__vcvarsall")
    if vcvarsall then
        local vcvars = vcvarsall[arch] 
        if vcvars and vcvars.WindowsSdkDir and vcvars.WindowsSDKVersion then
            local bindir = path.join(vcvars.WindowsSdkDir, "bin", vcvars.WindowsSDKVersion, arch)
            if os.isdir(bindir) then
                opt.pathes = opt.pathes or {}
                table.insert(opt.pathes, bindir)
            end
        end
    end

    -- find program
    local program = find_program(opt.program or "rc.exe", opt)

    -- find program version
    local version = nil
    if program and opt and opt.version then
        version = find_programver(program, opt)
    end

    -- ok?
    return program, version
end