sys2_service_unit

--sys2_service_unit
os.loadAPI("sys/syslib")

--syslib_end

rednet.open("back")


function identify()
    local label = os.getComputerLabel()
    if label == nil then
        label = "<unnamed>"
    end
    rednet.broadcast("@root:identifyServiceUnit," .. label)
end

print("<serviceUnit>")

identify()
local rootId
local bootUnitId

function main()
    local id, msg = syslib.receiveRednet()
    local tag, pts = syslib.getMsgData(msg)
    if tag == "@serviceUnit" then
        if pts[1] == "identifyToRoot" then
            bootUnitId = id
            rootId = pts[2]
            identify()
        elseif pts[1] == "setRootData" then
            rootId = id
            bootUnitId = pts[2]
        elseif pts[1] == "action" then
            if pts[2] == "setStartup" then
                print("setStartup")
                shell.run("delete", "startup")
                local f = fs.open("startup", "w")
                f.write("shell.run(\"delete\",\"unitHandler\")\n")
                f.write("shell.run(\"pastebin\",\"get\",\"" .. pts[3] .. "\",\"unitHandler\")\n")
                f.write("shell.run(\"unitHandler\")\n")
                f.close()
            elseif pts[2] == "executePastebin" then
                shell.run("delete", "temp")
                shell.run("pastebin", "get", pts[3], "temp")
                shell.run("temp", rootId, bootUnitId)
                syslib.sendRednet(id, "@root:answer,executionTerminated")
            elseif pts[2] == "setLabel" then
                syslib.log("root", "successfully renamed unit '" .. os.getComputerLabel() .. "' to '" .. pts[3] .. "'")
                os.setComputerLabel(pts[3])
                syslib.sendRednet(rootId, "@root:answer,renamedUnit," .. pts[3])
            else print("unknown message>action: ", msg)
            end
        else print("unknown message: ", msg)
        end
    end
end

while true do
    local status, err = pcall(main)
    if err == "Terminated" then
        break
    elseif not status then
        print("error thrown: " .. err)
        rednet.broadcast("@err:" .. os.getComputerID() .. "," .. os.getComputerLabel() .. ",serviceUnit")
    end
end