main.lua

os.loadAPI("/blackboard/blackBoard")

function display(t)
        local x, y = t.getSize()
        t.clear()
        t.setCursorPos(1, 1)
        for i = 1, x do
                t.blit(" ", "0", "7")
        end
        t.setCursorPos(1, 1)
        t.blit("id", "00", "77")
        t.setCursorPos(4, 1)
        t.blit("from", "0000", "7777")
        t.setCursorPos(x / 4 + 4, 1)
        t.blit("to", "00", "77")
        t.setCursorPos(x / 2 + 3, 1)
        t.blit("message", "0000000", "7777777")

        blackBoard.load("/todo.bb")
        for i = 1, blackBoard.maxid() do
                local from, to, what = blackBoard.select(i)
                t.setCursorPos(1, i + 1)
                t.write(tostring(i))
                t.setCursorPos(4, i + 1)
                t.write(from)
                t.setCursorPos(x / 4 + 4, i + 1)
                t.write(to)
                t.setCursorPos(x / 2 + 3, i + 1)
                t.write(what)
        end

end

function main()
        local mon = peripheral.wrap("left")
        mon.setTextScale(0.5)
        display(mon)
        display(term)
        local x, y = term.getSize()
        blackBoard.load("/todo.bb")
        while true do
                term.setCursorPos(1, y)
                term.write("Command: ")
                local command = io.read()
                if command == "insert" then
                        display(mon)
                        display(term)
                        term.setCursorPos(1, y)
                        term.write("from: ")
                        local from = io.read()
                        display(mon)
                        display(term)
                        term.setCursorPos(1, y)
                        term.write("to: ")
                        local to = io.read()
                        display(mon)
                        display(term)
                        term.setCursorPos(1, y)
                        term.write("what: ")
                        local what = io.read()
                        blackBoard.insert(from, to, what)
                elseif command == "delete" then
                        display(mon)
                        display(term)
                        term.setCursorPos(1, y)
                        term.write("id: ")
                        local id = io.read()
                        blackBoard.delete(tonumber(id))
                elseif command == "update" then
                        display(mon)
                        display(term)
                        term.setCursorPos(1, y)
                        term.write("id: ")
                        local id = io.read()
                        display(mon)
                        display(term)
                        term.setCursorPos(1, y)
                        term.write("from: ")
                        local from = io.read()
                        if from == "" then
                                from = nil
                        end
                        display(mon)
                        display(term)
                        term.setCursorPos(1, y)
                        term.write("to: ")
                        local to = io.read()
                        if to == "" then
                                to = nil
                        end
                        display(mon)
                        display(term)
                        term.setCursorPos(1, y)
                        term.write("what: ")
                        local what = io.read()
                        if what == "" then
                                what = nil
                        end
                        print(from)
                        blackBoard.update(tonumber(id), from, to, what)
                elseif command == "exit" then
                        mon.clear()
                        term.clear()
                        return
                end

                display(mon)
                display(term)
        end
end


main()