require 'grid'
require 'point'
require 'line'
require 'mouse'
require 'levelhandler'
require 'button'
Input = require 'input'

InMenu = true

local function updateCellSize()
    local width, height = love.graphics.getDimensions()
    local gridX, gridY = GameGrid.size:coords();
    local isWidthBased = (width / height) / (gridX / gridY)
    Config.cellSize = math.floor(isWidthBased and height / gridY or width / gridX)
    love.graphics.setLineWidth( Config.cellSize * Config.lineWidth )
end

function love.load()
    love.window.setMode( 800, 480 )

    local menuButtonReleased = function()
        InMenu = false
        GameGrid = LevelHandler:first()
        updateCellSize()
    end

    MenuStartButton = Button:new( Point:new( 240, 120 ), Point:new( 320, 80 ), nil, nil, menuButtonReleased )


    love.graphics.setLineStyle( Config.lineStyle )
end

function love.update( dt )
    Mouse:update()
    Input:update()
    if InMenu then
        MenuStartButton:update( dt, Point:new( Mouse.x, Mouse.y ), Mouse.pressed )
    else
        if Input:actionReleased( 'exit' ) then
            love.event.quit()
        end

        if Input:actionReleased( 'nextlevel' ) then
            if GameGrid:isCompleted() then
                GameGrid = LevelHandler:next()
                updateCellSize()
            end
        end
    end
end

function love.draw()
    if InMenu then
        MenuStartButton:draw()
    else
        GameGrid:draw()

        local text = string.format( "%d:%d global\n%d:%d local\n%d:%d from start", Mouse.x, Mouse.y, Mouse.point.x, Mouse.point.y, Mouse.startX - Mouse.x, Mouse.startY - Mouse.y )
        love.graphics.print( text, 64, 256 )

        if Mouse.dragged then
            love.graphics.print( "drag", 64, 300 )
        end
        if Mouse.lastLine ~= nil then
            love.graphics.print( tostring( Mouse.lastLine ), 128, 300 )
        end

        if GameGrid:isCompleted() then
            love.graphics.print( "Grid completed. Press space to proceed to next", 64, 320 )
        end
    end
end