local getExeFileExt = function()
    if os.host() == "windows" then
        return ".exe"
    end
    return ""
end 

local testPath = function(cwd, exe, ext) 
    local path = cwd .. "/" .. exe .. ext
    if (not os.isfile(path)) then
        return nil
    end
    return os.realpath(path) 
end

local getPremakeExec = function()
    local exec = premake_exe;
    if (exec) then
        return exec
    end

    if (_PREMAKE_COMMAND) then
        premake_exe = _PREMAKE_COMMAND
        return premake_exe
    end

    local cwd = os.getcwd()
    local ext = getExeFileExt()

    local mods = {"auroramake", "premake5", "premake", "genie"}
    for k, v in pairs(mods) do 
        premake_exe = testPath(cwd, v, ext)
        if (premake_exe) then
            return premake_exe
        end  
    end

    premake_exe = "premake5"
    return premake_exe
end

local addBuildCommand = function(when, scriptType, path, cwdRelToProject, args)
    local scriptPath = path
    local cwd = getroot()

    if (os.host() == "linux") then
        command = "cd \"" .. cwd .. "\" && "
    elseif (os.host() == "windows") then
        command = "call "
    end

    local cur = getProjectInfo(getCurrentProjectName())
    command = command .. getPremakeExec()
    command = command .. " --file=\"" .. os.realpath(cwd .. "/Build_Scripts/Actions/buildActionBootstrap.lua") .. "\""
    --command = command .. " --project_name=\"%{prj.name}\""
    command = command .. " --project_name=\"" .. cur.name .. "\""
    command = command .. " --project_arch=\"%{cfg.architecture}\""
    command = command .. " --project_platform=\"%{cfg.system}\""

    if (cwdRelToProject) then
        command = command .. " --actualcwd=\"" .. cur.path .. "\""
    else
        command = command .. " --actualcwd=\"" .. os.realpath(cwd) .. "\""
    end

    if (cur and cur.path) then
        command = command .. " --project_root=\"" .. cur.path .. "\""
    end

    command = command .. " --scripts=\"" .. os.realpath(cwd .. "/Build_Scripts") .. "\""

    if (when == "post") then

        local postBuildSuffix = " --cur_binary=\"%{cfg.buildtarget.abspath}\""
        command = command .. postBuildSuffix
    end

    local cliArgs = ""
    local argsEscaped = ""
    if (args) then
        argsEscaped = args:gsub("\"", "\\\"")
        cliArgs = " " .. argsEscaped
    end

    if (scriptType == "lua") then
        if (os.isfile(path) and os.realpath(path) == path) then
            command = command .. " --luaabsscript=\"" .. path .. "\""
        else
            command = command .. " --luascript=\"" .. path .. "\""
        end

        command = command .. " --additional=\"" .. base64.encode(argsEscaped) .. "\""
    elseif (scriptType == "bin") then
        command = command .. " --binscript=\"" .. path .. cliArgs .. "\""
    end

    --command = command:gsub("\\","\\\\")
    if (when == "post") then
        postbuildcommands(command)
    elseif (when == "pre") then
        prebuildcommands(command)
    end

end

return addBuildCommand