Robot Chank

local robot = require('robot')
local api = {}
local chest_robot = 16

function api.forward()
    while true do
        if robot.forward() then break else robot.swing() end
    end
end

function api.kop()
    for i = 1, 16 do
        if robot.detectUp() then robot.swingUp() end
        if robot.detect() and i ~=16 then robot.swing()end
        if robot.detectDown() then robot.swingDown() end
        if i ~= 16 then
            api.forward()
        end
    end
end

function api.down()
    for i = 1, 3 do
        if robot.detectDown() then robot.swingDown() end
        robot.down()
        if i ~= 3 then robot.turnLeft() end
    end
end

function api.turn(info, n)
    if info == n then
        robot.turnRight()
        if robot.detect() then api.forward() end
        robot.forward()
        robot.turnRight()
    else
        robot.turnLeft()
        if robot.detect() then api.forward() end
        robot.forward()
        robot.turnLeft()
    end
end

function api.drop()
    robot.select(chest_robot)
    if robot.count() ~= 0 then
        robot.select(1)
        robot.swing()
        robot.up()
        robot.swing()
        robot.down()
        if robot.place(1) then
            for i = 2, chest_robot do
                robot.select(i)
                robot.drop()
            end
        end
    end
    robot.select(1)
end

function api.mine(y)
    local n = 0,5
    for i = 1, y / 3 do
        for j = 1, 16 do
            api.kop()
            api.drop()
            _, info = math.modf(j / 2)
            if j ~= 16 then api.turn(info, n) end
        end
        if n == 0.5 then n = 0 else n = 0.5 end
        api.down()
    end
end

return api