--[[

	The MIT License (MIT)

	Copyright (c) 2023 Lars Norberg

	Permission is hereby granted, free of charge, to any person obtaining a copy
	of this software and associated documentation files (the "Software"), to deal
	in the Software without restriction, including without limitation the rights
	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	copies of the Software, and to permit persons to whom the Software is
	furnished to do so, subject to the following conditions:

	The above copyright notice and this permission notice shall be included in all
	copies or substantial portions of the Software.

	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	SOFTWARE.

--]]
local Addon, ns = ...
ns = LibStub("AceAddon-3.0"):NewAddon(ns, Addon, "LibMoreEvents-1.0", "AceConsole-3.0")
ns.L = LibStub("AceLocale-3.0"):GetLocale(Addon, true)
ns.callbacks = LibStub("CallbackHandler-1.0"):New(ns, nil, nil, false)
ns.Hider = CreateFrame("Frame"); ns.Hider:Hide()
ns.Noop = function() end

ns.EDIT_MODE_VERSION = -9999
ns.SETTINGS_VERSION = -9999

_G[Addon] = ns

local defaults = {
	profile = {
		relativeScale = 1
	}
}

local moduleDefaults = {
	enabled = true
}
ns.moduleDefaults = moduleDefaults

-- Lua API
local ipairs = ipairs
local math_max = math.max
local math_min = math.min
local next = next
local string_lower = string.lower
local tonumber = tonumber

-- Addon API
local SetRelativeScale = ns.API.SetRelativeScale
local UpdateObjectScales = ns.API.UpdateObjectScales

-- Proxy method to avoid modules using the callback object directly
ns.Fire = function(self, name, ...)
	self.callbacks:Fire(name, ...)
end

-- Hard table merging without metatables.
ns.Merge = function(self, target, source)
	if (type(target) ~= "table") then target = {} end
	for k,v in pairs(source) do
		if (type(v) == "table") then
			target[k] = self:Merge(target[k], v)
		elseif (target[k] == nil) then
			target[k] = v
		end
	end
	return target
end

ns.ResetBlizzardScale = function(self)
	if (InCombatLockdown()) then return end
	SetCVar("uiScale", ns.API.GetDefaultBlizzardScale())
	ReloadUI() -- need a reset as the above can taint
end

ns.UpdateSettings = function(self, event, ...)
	-- Fire callbacks to submodules.
	self.callbacks:Fire("Saved_Settings_Updated")
end

ns.OnEvent = function(self, event, ...)
	if (event == "PLAYER_ENTERING_WORLD") then
		print("Type |cff4488ff/resetlayout|r to reset the AzeriteUI editmode profile!")
		print("Type |cff4488ff/resetscale|r to set the ui scale to AzeriteUI default.")
		self:UnregisterEvent("PLAYER_ENTERING_WORLD", "OnEvent") -- once is enough.
	end
end

ns.OnInitialize = function(self)

	self.db = LibStub("AceDB-3.0"):New("AzeriteUI5_DB", defaults, true)

	-- Force a settings reset on backwards incompatible changes.
	if (self.db.profile.version ~= ns.SETTINGS_VERSION) then
		self.db:ResetDB() -- Full db reset of all profiles. Destructive operation.
		self.db.profile.version = ns.SETTINGS_VERSION -- Store version in default profile.
		self.triggerProfileReset = true -- Tell modules about it, the simple way.
	end

	-- Force a settings reset on layout updates or fixes.
	if (self.db.profile.layoutversion ~= ns.EDIT_MODE_VERSION) then
		self.db.profile.layoutversion = ns.EDIT_MODE_VERSION
		self.triggerEditModeReset = true -- Tell modules about it, the simple way.
	end

	self.db.RegisterCallback(self, "OnProfileChanged", "UpdateSettings")
	self.db.RegisterCallback(self, "OnProfileCopied", "UpdateSettings")
	self.db.RegisterCallback(self, "OnProfileReset", "UpdateSettings")

	self:RegisterChatCommand("resetscale", "ResetBlizzardScale")

	self:RegisterEvent("PLAYER_ENTERING_WORLD", "OnEvent")

end
