dialog

-- Minex dialogs api

termWidth, termHeight = term.getSize()
local termHalfWidth = math.floor(termWidth / 2)
local termHalfHeight = math.floor(termHeight / 2)

-- Character table.
-- If you have a better way of doing this, lemme know.
local keyboard = {
    [30] = 'a',
    [48] = 'b',
    [46] = 'c',
    [32] = 'd',
    [18] = 'e',
    [33] = 'f',
    [34] = 'g',
    [35] = 'h',
    [23] = 'i',
    [36] = 'j',
    [37] = 'k',
    [38] = 'l',
    [50] = 'm',
    [49] = 'n',
    [24] = 'o',
    [25] = 'p',
    [16] = 'q',
    [19] = 'r',
    [31] = 's',
    [20] = 't',
    [22] = 'u',
    [47] = 'v',
    [17] = 'w',
    [45] = 'x',
    [21] = 'y',
    [44] = 'z',
    [2] = '1',
    [3] = '2',
    [4] = '3',
    [5] = '4',
    [6] = '5',
    [7] = '6',
    [8] = '7',
    [9] = '8',
    [10] = '9',
    [11] = '0',
    [57] = ' '
}

-- Self explanatory, this function prints text centered on the screen.
-- Or at least, it tries to.
function centeredText(y, text)
    local textLength = string.len(text)
    local cursorXPos = termHalfWidth - math.floor(textLength / 2)
    term.setCursorPos(cursorXPos, y)
    term.write(text)
end

-- A standard dialog screen.
function notice(text, colorSchema)
    -- Set background color.
    paintutils.drawFilledBox(1, 2, termWidth, termHeight, colorSchema.bgColor)
    term.setBackgroundColor(colorSchema.bgColor)
    term.setTextColor(colorSchema.fgColor)
    centeredText(termHalfHeight, text)

    --draw buttons.
    local buttonEnd = (termHalfWidth + 3)
    local buttonStart = (termHalfWidth - 2)

    local yPos = (termHalfHeight + 2)

    paintutils.drawLine(buttonStart, yPos, buttonEnd, yPos, colorSchema.btColor)
    term.setCursorPos(buttonStart+1, yPos)
    term.write("Okay")

    --wait for input.
    while true do
        -- sets multiple variables using os.pullEvent, if the mouse if clicked.
        local event, button, x, y = os.pullEvent("mouse_click")
        -- Basic logic to check which button has been pressed.
        if y == yPos then
            if x >= buttonStart and x <= buttonEnd then
                break
            end
        end
    end
end

-- A y/n dialog screen.
function truth(text, colorSchema)
    -- Set background color.
    paintutils.drawFilledBox(1, 2, termWidth, termHeight, colorSchema.bgColor)
    term.setBackgroundColor(colorSchema.bgColor)
    term.setTextColor(colorSchema.fgColor)
    centeredText(termHalfHeight, text)

    --draw buttons.
    local yesEnd = (termHalfWidth - 1)
    local yesStart = (yesEnd - 4)
    local noStart = (termHalfWidth + 1)
    local noEnd = (noStart + 3)
    local yPos = (termHalfHeight + 2)

    paintutils.drawLine(yesStart, yPos, yesEnd, yPos, colorSchema.btColor)
    paintutils.drawLine(noStart, yPos, noEnd, yPos, colorSchema.btColor)
    term.setCursorPos(yesStart+1, yPos)
    term.write("yes")

    term.setCursorPos(noStart+1, yPos)
    term.write("no")

    --wait for input.
    while true do
        -- sets multiple variables using os.pullEvent, if the mouse is clicked.
        local event, button, x, y = os.pullEvent("mouse_click")

        -- Basic logic to check which button has been pressed.
        if y == yPos then
            if x >= yesStart and x <= yesEnd then
                return true
            elseif x >= noStart and x <= noEnd then
                return false
            end
        end
    end
end

-- A textfield dialog screen.
function text(text, colorSchema)
    -- Set background color.
    paintutils.drawFilledBox(1, 2, termWidth, termHeight, colorSchema.bgColor)
    term.setBackgroundColor(colorSchema.bgColor)
    term.setTextColor(colorSchema.fgColor)
    centeredText(termHalfHeight, text)

    --draw buttons.
    local buttonEnd = (termHalfWidth + 3)
    local buttonStart = (termHalfWidth - 2)

    local yPos = (termHalfHeight + 5)

    paintutils.drawLine(1, yPos - 2, termWidth, yPos - 2, colorSchema.btColor)
    paintutils.drawLine(buttonStart, yPos, buttonEnd, yPos, colorSchema.btColor)
    term.setCursorPos(buttonStart+1, yPos)
    term.write("Okay")

    --wait for input.
    local content = ""
    while true do
        -- sets multiple variables using os.pullEvent, if key is pressed.
        local event, key, mouseX, mouseY = os.pullEvent()
        -- return stored value when enter key pressed
        if event == "key" then
            if key == keys.enter then
                return content
        -- Otherwise, concatenate to the value.
            elseif keyboard[key] ~= nil and string.len(content) < termWidth - 2 then
                content = content .. keyboard[key]
                -- display output.
                term.setCursorPos(2, yPos - 2)
                term.write(content)
            end
        end

        -- check if button clicked
        -- Basic logic to check which button has been pressed.
        if event == "mouse_click" then
            if mouseY == yPos then
                if mouseX >= buttonStart and mouseX <= buttonEnd then
                    return content
                end
            end
        end
    end
end