local Element = require "lib.simple_ui.element"
local AnimationNode = require "lib.animation_node"
local easing = require "lib.utils.easing"

--- @class EndTurnButton : UIElement
--- @field hovered boolean
--- @field onClick function?
local endTurnButton = setmetatable({}, Element)
endTurnButton.__index = endTurnButton

function endTurnButton:update(dt)
    local mx, my = love.mouse.getPosition()
    if self:hitTest(mx, my) then
        self.hovered = true
        if Tree.controls:isJustPressed("select") then
            if self.onClick then self.onClick() end
            Tree.controls:consume("select")
        end
    else
        self.hovered = false
    end
end

function endTurnButton:layout()
    local font = Tree.fonts:getDefaultTheme():getVariant("headline")
    self.text = love.graphics.newText(font, "Завершить ход")
    self.bounds.width = self.text:getWidth() + 32
    self.bounds.height = self.text:getHeight() + 16
end

function endTurnButton:draw()
    love.graphics.setColor(38 / 255, 50 / 255, 56 / 255, 0.9)
    love.graphics.rectangle("fill", self.bounds.x, self.bounds.y, self.bounds.width, self.bounds.height)

    if self.hovered then
        love.graphics.setColor(0.1, 0.1, 0.1)
        love.graphics.rectangle("fill", self.bounds.x, self.bounds.y, self.bounds.width, self.bounds.height)
    end

    love.graphics.setColor(0.95, 0.95, 0.95)
    love.graphics.draw(self.text, self.bounds.x + 16, self.bounds.y + 8)

    self:drawBorder("outer")
    love.graphics.setColor(1, 1, 1)
end

function endTurnButton:onClick()
    Tree.level.turnOrder:next()
    Tree.level.selector:select(nil)
    local cid = Tree.level.turnOrder.current
    local playing = Tree.level.characters[cid]
    if not playing:has(Tree.behaviors.map) then return end

    AnimationNode {
        function(node)
            Tree.level.camera:animateTo(playing:has(Tree.behaviors.map).displayedPosition, node)
        end,
        duration = 1500,
        easing = easing.easeInOutCubic,
        onEnd = function() Tree.level.selector:select(cid) end
    }:run()
end

return function(values)
    return endTurnButton:new(values)
end