-- startup script for mining turtles

function ack(id)
    rednet.send(id, "ack")
end

rednet.close("right")
rednet.open("right")

function findDirection()
    local ret = 0
    local oldX, _, oldZ = gps.locate(1)
    print("location 1: "..oldX.." "..oldZ)
    local moved = false
    for d = 1,4 do
        print("testing direction "..d)
        if not turtle.detect() then
            while not turtle.forward() do
                turtle.attack()
                sleep(0.25)
            end
            moved = true
            break
        else
            turtle.turnRight()
        end
    end
    if not moved then
        turtle.dig()
        while not turtle.forward() do
            turtle.attack()
            sleep(0.25)
        end
    end
    local newX, _, newZ = gps.locate(1)
    print("location 2: "..newX.." "..newZ)
    while not turtle.back() do
        sleep(0.25)
    end
    local deltaX = newX - oldX
    local deltaZ = newZ - oldZ
    if deltaX == 1 then
        ret = 4
    elseif deltaX == -1 then
        ret = 2
    elseif deltaZ == 1 then
        ret = 1
    elseif deltaZ == -1 then
        ret = 3
    end
    print("found direction: "..ret)
    return ret
end

local pos = {}
-- print("which direction am i facing?")
-- pos[4] = tonumber(read())
sleep(5)
pos[4] = findDirection()
pos[1], pos[2], pos[3] = gps.locate(1)
local statefile = "state"
local fh = fs.open(statefile, "w")
for i = 1,4 do
    fh.writeLine(tostring(pos[i]))
end
fh.close()

local state = {}
local metastatefile = "metastate"
local mfh = fs.open(metastatefile, "r")
for i = 1,10 do
    state[i] = tonumber(mfh.readLine())
end
mfh.close()

for Z = 1,state[8] do
    for X = 1,state[7] do
        local mineX = state[1] + (X - 1) * 5
        local mineZ = state[2] + (Z - 1) * 5
        if (Z >= state[10]) and (X >= state[9]) then
            print("going to mine at "..mineX.." "..mineZ)--..", dropping loot at "..state[3].." "..state[4].." "..state[5].." "..state[6])
            shell.run("miminer "..mineX.." "..mineZ.." "..state[3].." "..state[4].." "..state[5].." "..state[6])
            mfh = fs.open(metastatefile, "w")
            for i = 1,8 do
                mfh.writeLine(tostring(state[i]))
            end
            mfh.writeLine(tostring(X))
            mfh.writeLine(tostring(Z))
            mfh.close()
            sleep(5)
        else
            print("already mined out "..mineX.." "..mineZ)
        end
    end
end
-- while true do
    -- local msg = ""
    -- print("broadcasting ready signal")
    -- rednet.broadcast("drone ready")

    -- id, msg, _ = rednet.receive(10)
    -- if msg ~= "" then
        -- print("answer received")
        -- if msg == "mine at" then
            -- ack(id)
            -- args = {}
            -- for i = 1,6 do
                -- id, args[i], _ = rednet.receive()
                -- print("received: ", args[i])
                -- ack(id)
            -- end
            -- print("going to mine at "..args[1].." "..args[2]..", dropping loot at "..args[3].." "..args[4].." "..args[5].." "..args[6])
            -- shell.run("miminer ", args[1].." "..args[2].." "..args[3].." "..args[4].." "..args[5].." "..args[6]) -- go do stuff
        -- else
            -- os.sleep(10)
        -- end
    -- end
-- end