---@type Diesal.GUI
local DiesalGUI = LibStub("DiesalGUI-2.0")
---@type Diesal.Tools
local DiesalTools = LibStub("DiesalTools-2.0")
---@type Diesal.Style
local DiesalStyle = LibStub("DiesalStyle-2.0")
-- ~~| Diesal Upvalues |~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
local Colors = DiesalStyle.Colors
local HSL, ShadeColor, TintColor = DiesalTools.HSL, DiesalTools.ShadeColor, DiesalTools.TintColor
-- | Lua Upvalues |~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
local type, tonumber, select = type, tonumber, select
local pairs, ipairs, next = pairs, ipairs, next
local min, max = math.min, math.max
-- | WoW Upvalues |~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-- | Spinner |~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
local Type = "DiesalBar"
local Version = 1
-- | Stylesheets |~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
local Stylesheet = {
    ["frame-background"] = {
        type = "texture",
        layer = "BACKGROUND",
        color = "000000",
        alpha = 0.60,
    },
    ["frame-outline"] = {
        type = "outline",
        layer = "BORDER",
        color = "FFFFFF",
        alpha = 0.02,
        position = 1,
    },
    ["frame-inline"] = {
        type = "outline",
        layer = "BORDER",
        color = "000000",
        alpha = 0.60,
    },
    ["bar-background"] = {
        type = "texture",
        layer = "BACKGROUND",
        gradient = { "VERTICAL", Colors.UI_A100, ShadeColor(Colors.UI_A100, 0.1) },
        position = 0,
    },
    ["bar-inline"] = {
        type = "outline",
        layer = "BORDER",
        gradient = { "VERTICAL", "FFFFFF", "FFFFFF" },
        alpha = { 0.07, 0.02 },
        position = 0,
    },
    ["bar-outline"] = {
        type = "texture",
        layer = "ARTWORK",
        color = "000000",
        alpha = 0.7,
        width = 1,
        position = { nil, 1, 0, 0 },
    },
}
local wireFrame = {
    ["frame-white"] = {
        type = "outline",
        layer = "OVERLAY",
        color = "ffffff",
    },
    ["bar-green"] = {
        type = "outline",
        layer = "OVERLAY",
        color = "55ff00",
    },
}
-- | Locals |~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
local function round(num)
    return floor((num + 1 / 2) / 1) * 1
end
-- | Methods |~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
---@class Diesal.GUI.Object.Bar.Methods
---@field OnAcquire fun(self: Diesal.GUI.Object.Bar)
---@field OnRelease fun(self: Diesal.GUI.Object.Bar)
---@field ApplySettings fun(self: Diesal.GUI.Object.Bar)
---@field UpdateSize fun(self: Diesal.GUI.Object.Bar)
---@field SetColor fun(self: Diesal.GUI.Object.Bar, color: string, colorTop: string, gradientDirection: string)
---@field SetSize fun(self: Diesal.GUI.Object.Bar, width: number, height: number)
---@field SetValue fun(self: Diesal.GUI.Object.Bar, number: number, min: number, max: number)
---@field SetMin fun(self: Diesal.GUI.Object.Bar, number: number)
---@field SetMax fun(self: Diesal.GUI.Object.Bar, number: number)
---@field UpdateBar fun(self: Diesal.GUI.Object.Bar)
---@field IsVisible fun(self: Diesal.GUI.Object.Bar): boolean
local methods = {
    ["OnAcquire"] = function(self)
        self:SetStylesheet(Stylesheet)
        self:ApplySettings()

        -- self:SetStylesheet(wireFrame)
        self:Show()
    end,
    ["OnRelease"] = function(self) end,
    ["ApplySettings"] = function(self)
        self:UpdateSize()
    end,
    ["UpdateSize"] = function(self)
        self:SetWidth(self.settings.width)
        self:SetHeight(self.settings.height)

        self.bar:SetPoint("TOPLEFT", self.settings.padding[1], -self.settings.padding[3])
        self.bar:SetPoint("BOTTOMLEFT", self.settings.padding[1], self.settings.padding[4])

        self.settings.barWidth = self.settings.width - self.settings.padding[1] - self.settings.padding[2]

        self:UpdateBar()
    end,
    ["SetColor"] = function(self, color, colorTop, gradientDirection) end,
    ["SetSize"] = function(self, width, height)
        width, height = tonumber(width), tonumber(height)
        if not width then
            error("Bar:SetSize(width, height) width to be a number.", 0)
        end
        if not height then
            error("Bar:SetSize(width, height) height to be a number.", 0)
        end

        self.settings.width, self.settings.height = width, height

        self:UpdateSize()
    end,
    ["SetValue"] = function(self, number, mi, ma)
        number, mi, ma = tonumber(number), tonumber(mi), tonumber(ma)
        if not number then
            error("Bar:SetValue(number) number needs to be a number.", 0)
        end

        self.settings.min = mi or self.settings.min
        self.settings.max = ma or self.settings.max
        self.settings.value = number
        self:UpdateBar()
    end,
    ["SetMin"] = function(self, number)
        number = tonumber(number)
        if not number then
            error("Bar:SetMin(number) needs to be a number.", 0)
        end

        self.settings.min = number
        self:UpdateBar()
    end,
    ["SetMax"] = function(self, number)
        number = tonumber(number)
        if not number then
            error("Bar:SetMax(number) needs to be a number.", 0)
        end

        self.settings.max = number
        self:UpdateBar()
    end,
    ["UpdateBar"] = function(self)
        local min, max, value, barWidth = self.settings.min, self.settings.max, self.settings.value, self.settings.barWidth
        local width = round((value - min) / (max - min) * barWidth)
        if width == 0 then
            self.bar:Hide()
        else
            self.bar:Show()
            self.bar:SetWidth(width)
        end
    end,
    ["IsVisible"] = function(self)
        return self.frame:IsVisible()
    end,
}

---@class DiesalBar : Diesal.GUI.Object.Bar

-- | Constructor |~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
local function Constructor()
    ---@class Diesal.GUI.Object.Bar : Diesal.GUI.ObjectBase, Diesal.GUI.Object.Bar.Methods
    ---@field bar Frame
    ---@field settings { height: number, width: number, padding: number[], value: number, min: number, max: number, barWidth: number }
    local self = DiesalGUI:Create(Type, true)
    local frame = CreateFrame("Frame", nil, DiesalGUI.UIParent)
    self.frame = frame
    -- ~~ Default Settings ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    self.defaults = {
        height = 14, -- frame height (not bar)
        width = 96, -- frame width (not bar)
        padding = { 1, 1, 1, 1 }, -- left, right, top, bottom		(bar padding from frame)
        value = 0,
        min = 0,
        max = 100,
    }
    -- ~~ Construct ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    frame:SetScript("OnHide", function(this)
        self:FireEvent("OnHide")
    end)

    local bar = self:CreateRegion("Frame", "bar", frame)

    -- ~~ Methods ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    self:SetMethods(methods)
    self:SetObj(self.frame)
    --[[ for method, func in pairs(methods) do
        self[method] = func
    end ]]
    -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    return self
end
DiesalGUI:RegisterObjectConstructor(Type, Constructor, Version)