#!/usr/bin/env luajit


local APT = {}


APT.readCmd = function(cmd)
    local result = {}
    local output = io.popen(cmd)
    if nil ~= output then
	for l in output:lines() do
	    table.insert(result, l)
	end
    end
    return result
end


APT.exe = function(c)
    local exe = {status = 0, result = '', log = true, cmd = c .. ' ', command = c}

    function exe:log()
	self.log = true
	return self
    end
    function exe:Nice(c)
	if nil == c then
	    self.cmd = 'ionice -c3 nice -n 19 ' .. self.cmd
	else
	    self.cmd = self.cmd .. 'ionice -c3 nice -n 19 ' .. c .. ' '
	end
	return self
    end
    function exe:timeout(c)
	-- timeout returns a status of - command status if --preserve-status; "128+9" (actually 137) if --kill-after ends up being done; 124 if it had to TERM; command status if all went well.
	-- --kill-after means "send KILL after TERM fails.
	if nil == c then
	    self.cmd = 'timeout --kill-after=10.0 --foreground 42.0s ' .. self.cmd
	else
	    self.cmd = 'timeout --kill-after=10.0 --foreground ' .. c .. ' ' .. self.cmd
	end
	return self
    end
    function exe:also(c)
	if nil == c then c = '' else c = ' ' .. c end
	self.cmd = self.cmd .. ';' .. c .. ' '
	return self
    end
    function exe:And(c)
	if nil == c then c = '' else c = ' ' .. c end
	self.cmd = self.cmd .. '&&' .. c .. ' '
	return self
    end
    function exe:Or(c)
	if nil == c then c = '' end
	self.cmd = self.cmd .. '|| ' .. c .. ' '
	return self
    end
    function exe:noErr()
	self.cmd = self.cmd .. '2>/dev/null '
	return self
    end
    function exe:wait(w)
	self.cmd = self.cmd .. '&& touch ' .. w .. ' '
	return self
    end
    function exe:Do()
    --[[    "The condition expression of a control structure can return any
	    value. Both false and nil are considered false. All values different
	    from nil and false are considered true (in particular, the number 0
	    and the empty string are also true)."
	says the docs, I beg to differ.]]
	if true == self.log then D("  executing - &nbsp; <code>" .. self.cmd .. "</code>") end
	--[[ Damn os.execute()
	    Lua 5.1 says it returns "a status code, which is system-dependent"
	    Lua 5.2 says it returns true/nil, "exit"/"signal", the status code.
	    I'm getting 7168 or 0.  No idea what the fuck that is.
	local ok, rslt, status = os.execute(s)
	]]
	local f = APT.readCmd(self.cmd, 'r')
	-- The last line will be the command's returned status, collect everything else in result.
	self.status = ''	-- Otherwise the result starts with 0.
	self.result = '\n'
	for i,l in ipairs(f) do
	    self.result = self.result .. l .. "\n"
	end
	f = APT.readCmd('echo "$?"', 'r')
	for i,l in ipairs(f) do
	    self.status = tonumber(l)
	    if (137 == self.status) or (124 == self.status) then
		print("timeout killed " .. self.status .. ' ' .. self.command)
		E("timeout killed " .. self.status .. ' ' .. self.command)
	    elseif (0 ~= self.status) then
		print("status |" .. self.status .. '| ' .. self.command)
		E("status |" .. self.status .. '| ' .. self.command)
	    end
	end
	return self
    end
    function exe:fork(host)
	if nil ~= host then self.cmd = self.cmd .. ';  r=$?; if [ $r -ge 124 ]; then echo "$r ' .. host .. ' failed forked command ' .. string.gsub(self.cmd, '"', "'") .. '"; fi' end
	self.cmd = '{ ' .. self.cmd .. '; } &'
	if true == self.log then D("  forking - &nbsp; <code>" .. self.cmd .. "</code>") end
	os.execute(self.cmd)
	return self
    end
    return exe
end


APT.exe("a2j_control --stop"):Do()
APT.exe("sleep 2"):Do()
APT.exe("a2j_control --exit"):Do()
APT.exe("sleep 2"):Do()
APT.exe("killall -TERM alsa_out"):Do()
APT.exe("killall -TERM alsa_in"):Do()
APT.exe("killall -TERM zita-a2j"):Do()
APT.exe("killall -TERM zita-j2a"):Do()
APT.exe("killall -TERM aseqjoy"):Do()
APT.exe("killall -TERM jack-plumbing"):Do()
APT.exe("sleep 2"):Do()
APT.exe("jack_control stop"):Do()
APT.exe("sleep 2"):Do()
APT.exe("jack_control exit"):Do()
APT.exe("sleep 2"):Do()
--APT.exe("a2j_control --stop; a2j_control --exit"):Do()
--APT.exe("sleep 2"):Do()
APT.exe("killall -TERM jmcore"):Do()
APT.exe("pkill -TERM jackdbus; pkill -TERM a2jmidid"):Do()
APT.exe("killall -TERM a2jmidid"):Do()
APT.exe("killall -KILL jackdbus"):Do()
APT.exe("sleep 2"):Do()
APT.exe("killall -KILL a2jmidid"):Do()
APT.exe("pkill -KILL jackdbus; pkill -KILL a2jmidid"):Do()
APT.exe("sleep 2"):Do()
APT.exe("killall -KILL a2jmidid"):Do()
APT.exe("killall -KILL jackdbus"):Do()
APT.exe("sleep 2"):Do()
APT.exe("killall -KILL a2jmidid"):Do()
APT.exe("killall -KILL jackdbus"):Do()
APT.exe("sleep 2"):Do()
APT.exe("pkill -KILL jackdbus; pkill -KILL a2jmidid"):Do()
APT.exe("killall -TERM qjackctl"):Do()

-- Catia is python, and no easy way to kill it.
APT.exe("ps auxw | grep python"):Do()