local ui = {}

ui.theme = {
    bg          = {0.13, 0.13, 0.14},
    panel       = {0.17, 0.17, 0.19},
    border      = {0.28, 0.28, 0.30}, -- also known as outline
    borderwidth = 3,
    text        = {0.90, 0.90, 0.90},
    text_dim    = {0.50, 0.50, 0.55}, -- low-key forgot
    accent      = {0.27, 0.52, 0.90}, -- low-key also forgot
    hover       = {0.22, 0.25, 0.35},
    active      = {0.20, 0.40, 0.75}, -- i low-key forgot again, probably made for when a toggle or something is turned on
}

ui.events    = {}
ui._wasDown  = false
ui._focused  = nil
ui._inputs   = {}
ui._claimedFocus = false
ui._clickConsumed = false

function ui.emit(event)
    ui.events[event] = true -- should change to a custom ID soon to prevent conflicts.
end

function ui.on(event)
    return ui.events[event] == true
end

function ui.flush() -- all issues is because of this btw (joke, kinda. bunch of bugs from it)
    local isDown = love.mouse.isDown(1)
    if isDown and not ui._wasDown and not ui._claimedFocus then
        ui._focused = nil
    end
    ui._wasDown = isDown  -- update AFTER using it
    ui._claimedFocus = false
    ui.events = {}
    ui._clickConsumed = false
end

function ui.panel(x, y, w, h) -- this thingy magic panel creator makes a ui with outline. (x pos, y pos, width, height)
    love.graphics.setColor(ui.theme.panel)
    love.graphics.rectangle("fill", x, y, w, h)
    love.graphics.setColor(ui.theme.border)
    love.graphics.setLineWidth(ui.theme.borderwidth)
    love.graphics.rectangle("line", x, y, w, h)
end

function ui.button(x, y, w, h, text)
    local mousex, mousey = love.mouse.getPosition()
    local hovered = mousex > x and mousex < x + w and mousey > y and mousey < y + h -- calculaters if its touching the box
    if hovered then
        -- makes dimed panel then text ontop
        love.graphics.setColor(ui.theme.hover)
        love.graphics.rectangle("fill", x, y, w, h)
        love.graphics.setColor(ui.theme.border)
        love.graphics.setLineWidth(ui.theme.borderwidth)
        love.graphics.rectangle("line", x, y, w, h)
        ui.text(x, y, w, h, text)
    else
        ui.textPanel(x, y, w, h, text) -- just normal text with a background
    end

    if hovered and love.mouse.isDown(1) and not ui._wasDown and not ui._clickConsumed then
        ui.emit(text)
        ui._clickConsumed = true
    end

    return hovered -- returns hovered, this means hovered is returned. and hovered being returned means it returns what hovered is
end

function ui.textPanel(x, y, w, h, text) -- expand on this, havent fully read the text documentation so i dont know if i should have more    
    ui.panel(x, y, w, h)
    ui.text(x, y, w, h, text)
end

function ui.text(x, y, w, h, text)
    local font = love.graphics.getFont()
    local _, lines = font:getWrap(text, w)
    local lineCount = #lines
    local lineHeight = font:getHeight()
    local totalHeight = lineCount * lineHeight
    local startY = y + (h - totalHeight) / 2

    love.graphics.setScissor(x, y, w, h)
    love.graphics.setColor(ui.theme.text)
    love.graphics.printf(text, x, startY, w, "center")
    love.graphics.setScissor()  -- limits drawing space.
end

function ui.textInput(x, y, w, h, placeholder) -- two days for this to work...
    local text = ui._inputs[placeholder] or ""
    local focused = ui._focused == placeholder
    local mousex, mousey = love.mouse.getPosition()
    local clickedInside = mousex > x and mousex < x + w and mousey > y and mousey < y + h

    if love.mouse.isDown(1) and not ui._wasDown and clickedInside then
        ui._focused = placeholder
        ui._claimedFocus = true
    end

    if focused then
        ui.panel(x, y, w, h)
        if text == "" then
            local font = love.graphics.getFont()
            local lineHeight = font:getHeight()
            local startY = y + (h - lineHeight) / 2
            love.graphics.setColor(ui.theme.text_dim)
            love.graphics.printf(placeholder, x + 4, startY, w - 8, "left")
        else
            ui.text(x, y, w, h, text)
        end
    else
        ui.button(x, y, w, h, text == "" and placeholder or text)
    end
end


function ui.textinput_char(t)
    if ui._focused then
        ui._inputs[ui._focused] = (ui._inputs[ui._focused] or "") .. t
    end
end

function ui.textinput_backspace()
    if ui._focused then
        local str = ui._inputs[ui._focused] or ""
        ui._inputs[ui._focused] = str:sub(1, -2)
    end
end

return ui