local E, L, V, P, G = unpack(select(2, ...)); --Import: Engine, Locales, PrivateDB, ProfileDB, GlobalDB
local MC = E:GetModule("ModuleCopy")

--Lua functions
local pairs, next, type = pairs, next, type
local format, error = format, error
--WoW API / Variables
-- GLOBALS: ElvDB

--This table to reserve settings names in E.global.profileCopy. Used in export/imports functions
--Pligins can add own values for their internal settings for safechecks here
MC.InternalOptions = {
	["selected"] = true,
	["movers"] = true,
}

--Default template for a config group for a single module.
--Contains header, general group toggle (shown only if the setting actually exists) and imports button.
--Usage as seen in ElvUI_OptionsUI\modulecopy.lua
function MC:CreateModuleConfigGroup(Name, section, pluginSection)
	local config = {
		order = 10,
		type = "group",
		name = Name,
		args = {
			header = {
				order = 0,
				type = "header",
				name = Name
			},
			general = {
				order = 1,
				type = "toggle",
				name = L["General"]
			},
			PreButtonSpacer = {
				order = 200,
				type = "description",
				name = ""
			},
			import = {
				order = 201,
				type = "execute",
				name = L["Import Now"],
				func = function()
					E.PopupDialogs.MODULE_COPY_CONFIRM.text = format(L["You are going to copy settings for |cffD3CF00\"%s\"|r from |cff4beb2c\"%s\"|r profile to your current |cff4beb2c\"%s\"|r profile. Are you sure?"], Name, E.global.profileCopy.selected, ElvDB.profileKeys[E.myname.." - "..E.myrealm])
					E.PopupDialogs.MODULE_COPY_CONFIRM.OnAccept = function()
						MC:ImportFromProfile(section, pluginSection)
					end
					E:StaticPopup_Show("MODULE_COPY_CONFIRM")
				end
			},
			export = {
				order = 202,
				type = "execute",
				name = L["Export Now"],
				func = function()
					E.PopupDialogs.MODULE_COPY_CONFIRM.text = format(L["You are going to copy settings for |cffD3CF00\"%s\"|r from your current |cff4beb2c\"%s\"|r profile to |cff4beb2c\"%s\"|r profile. Are you sure?"], Name, ElvDB.profileKeys[E.myname.." - "..E.myrealm], E.global.profileCopy.selected)
					E.PopupDialogs.MODULE_COPY_CONFIRM.OnAccept = function()
						MC:ExportToProfile(section, pluginSection)
					end
					E:StaticPopup_Show("MODULE_COPY_CONFIRM")
				end
			}
		}
	}
	if pluginSection then
		config.args.general.hidden = function(info) return E.global.profileCopy[pluginSection][section][ info[#info] ] == nil end
		config.args.general.get = function(info) return E.global.profileCopy[pluginSection][section][ info[#info] ] end
		config.args.general.set = function(info, value) E.global.profileCopy[pluginSection][section][ info[#info] ] = value end
	else
		config.args.general.hidden = function(info) return E.global.profileCopy[section][ info[#info] ] == nil end
		config.args.general.get = function(info) return E.global.profileCopy[section][ info[#info] ] end
		config.args.general.set = function(info, value) E.global.profileCopy[section][ info[#info] ] = value end
	end

	return config
end

function MC:CreateMoversConfigGroup()
	local config = {
		header = {
			order = 0,
			type = "header",
			name = L["On screen positions for different elements."]
		},
		PreButtonSpacer = {
			order = 200,
			type = "description",
			name = ""
		},
		import = {
			order = 201,
			type = "execute",
			name = L["Import Now"],
			func = function()
				E.PopupDialogs.MODULE_COPY_CONFIRM.text = format(L["You are going to copy settings for |cffD3CF00\"%s\"|r from |cff4beb2c\"%s\"|r profile to your current |cff4beb2c\"%s\"|r profile. Are you sure?"], L["Movers"], E.global.profileCopy.selected, ElvDB.profileKeys[E.myname.." - "..E.myrealm])
				E.PopupDialogs.MODULE_COPY_CONFIRM.OnAccept = function()
					MC:CopyMovers("import")
				end
				E:StaticPopup_Show("MODULE_COPY_CONFIRM")
			end
		},
		export = {
			order = 202,
			type = "execute",
			name = L["Export Now"],
			func = function()
				E.PopupDialogs.MODULE_COPY_CONFIRM.text = format(L["You are going to copy settings for |cffD3CF00\"%s\"|r from your current |cff4beb2c\"%s\"|r profile to |cff4beb2c\"%s\"|r profile. Are you sure?"], L["Movers"], ElvDB.profileKeys[E.myname.." - "..E.myrealm], E.global.profileCopy.selected)
				E.PopupDialogs.MODULE_COPY_CONFIRM.OnAccept = function()
					MC:CopyMovers("export")
				end
				E:StaticPopup_Show("MODULE_COPY_CONFIRM")
			end
		}
	}
	for moverName, data in pairs(E.CreatedMovers) do
		if not G.profileCopy.movers[moverName] then G.profileCopy.movers[moverName] = false end
		config[moverName] = {
			order = 1,
			type = "toggle",
			name = data.mover.textString,
			get = function(info) return E.global.profileCopy.movers[moverName] end,
			set = function(info, value) E.global.profileCopy.movers[moverName] = value end
		}
	end
	for moverName, data in pairs(E.DisabledMovers) do
		if not G.profileCopy.movers[moverName] then G.profileCopy.movers[moverName] = false end
		config[moverName] = {
			order = 1,
			type = "toggle",
			name = data.mover.textString,
			get = function(info) return E.global.profileCopy.movers[moverName] end,
			set = function(info, value) E.global.profileCopy.movers[moverName] = value end
		}
	end

	return config
end

function MC:CopyTable(CopyFrom, CopyTo, CopyDefault, module)
	for key, value in pairs(CopyTo) do
		if type(value) ~= "table" then
			if module == true or (type(module) == "table" and (module.general == nil or (not CopyTo.general and module.general))) then --Some dark magic of a logic to figure out stuff
				--This check is to see if the profile we are copying from has keys absent from defaults.
				--If key exists, then copy. If not, then clear obsolite key from the profile.
				if CopyDefault[key] ~= nil then
					CopyTo[key] = CopyFrom[key] or CopyDefault[key]
				else
					CopyFrom[key] = nil
				end
			end
		else
			if module == true then --Copy over entire section of profile subgroup
				E:CopyTable(CopyTo, CopyDefault)
				E:CopyTable(CopyTo, CopyFrom)
			elseif type(module) == "table" and module[key] ~= nil then
				--Making sure tables actually exist in profiles (e.g absent values in ElvDB.profiles are for default values)
				CopyFrom[key], CopyTo[key] = MC:TablesExist(CopyFrom[key], CopyTo[key], CopyDefault[key])
				--If key exists, then copy. If not, then clear obsolite key from the profile.
				--Someone should double check this logic. Cause for single keys it is fine, but I'm no sure bout whole tables @Darth
				if CopyFrom[key] ~= nil then
					MC:CopyTable(CopyFrom[key], CopyTo[key], CopyDefault[key], module[key])
				else
					CopyTo[key] = nil
				end
			end
		end
	end
end

--[[
* Valid copy templates should be as follows
G.profileCopy[YourOptionGroupName] = {
	[SubGroupName1] = true,
	[SubGroupName2] = true,
	...
}
* For example
G.profileCopy.auras = {
	["general"] = true,
	["buffs"] = true,
	["debuffs"] = true,
	["cooldown"] = true,
}
* "general" key can refer to a similar named subtable or all non-table variables inside your group
* If you leave the table as G.profileCopy[YourOptionGroupName] = {}, this will result in no valid copy template error.
* If set to G.profileCopy[YourOptionGroupName] = true, then this will copy everything without selecting
any particular subcategory from your settings table.
* Plugins can use "pluginSection" argument to determain their own table if they keep settings apart from core ElvUI settings.
Examples S&L uses "sle" table, MerathilisUI uses "mui" table, BenikUI uses "benikui" and core table
]]

function MC:TablesExist(CopyFrom, CopyTo, CopyDefault)
	if not CopyFrom then CopyFrom = CopyDefault end
	if not CopyTo then CopyTo = CopyDefault end
	return CopyFrom, CopyTo
end

function MC:ImportFromProfile(section, pluginSection)
	--Some checks for the occasion someone passes wrong stuff
	if not section then error("No profile section provided. Usage MC:ImportFromProfile(\"section\")") end
	if not pluginSection and MC.InternalOptions[section] then error(format("Section name could not be \"%s\". This name is reserved for internal setting"), section) end
	if pluginSection and (MC.InternalOptions[pluginSection] and MC.InternalOptions[pluginSection][section]) then error(format("Section name for plugin group \"%s\" could not be \"%s\". This name is reserved for internal setting"), pluginSection, section) end

	local module = pluginSection and E.global.profileCopy[pluginSection][section] or E.global.profileCopy[section]
	if not module then error(format("Provided section name \"%s\" does not have a template for profile copy.", section)) end
	--Starting digging through the settings
	local CopyFrom = pluginSection and (ElvDB.profiles[E.global.profileCopy.selected][pluginSection] and ElvDB.profiles[E.global.profileCopy.selected][pluginSection][section] or P[pluginSection][section]) or ElvDB.profiles[E.global.profileCopy.selected][section]
	local CopyTo = pluginSection and E.db[pluginSection][section] or E.db[section]
	local CopyDefault = pluginSection and P[pluginSection][section] or P[section]
	--Making sure tables actually exist in profiles (e.g absent values in ElvDB.profiles are for default values)
	CopyFrom, CopyTo = MC:TablesExist(CopyFrom, CopyTo, CopyDefault)
	if type(module) == "table" and next(module) then --This module is not an empty table
		MC:CopyTable(CopyFrom, CopyTo, CopyDefault, module)
	elseif type(module) == "boolean" then --Copy over entire section of profile subgroup
		E:CopyTable(CopyTo, CopyDefault)
		E:CopyTable(CopyTo, CopyFrom)
	else
		error(format("Provided section name \"%s\" does not have a valid copy template.", section))
	end
	E:UpdateAll(true)
end

function MC:ExportToProfile(section, pluginSection)
	--Some checks for the occasion someone passes wrong stuff
	if not section then error("No profile section provided. Usage MC:ExportToProfile(\"section\")") end
	if not pluginSection and MC.InternalOptions[section] then error(format("Section name could not be \"%s\". This name is reserved for internal setting"), section) end
	if pluginSection and MC.InternalOptions[pluginSection][section] then error(format("Section name for plugin group \"%s\" could not be \"%s\". This name is reserved for internal setting"), pluginSection, section) end

	local module = pluginSection and E.global.profileCopy[pluginSection][section] or E.global.profileCopy[section]
	if not module then error(format("Provided section name \"%s\" does not have a template for profile copy.", section)) end
	--Making sure tables actually exist
	if not ElvDB.profiles[E.global.profileCopy.selected][section] then ElvDB.profiles[E.global.profileCopy.selected][section] = {} end
	if not E.db[section] then E.db[section] = {} end
	--Starting digging through the settings
	local CopyFrom = pluginSection and E.db[pluginSection][section] or E.db[section]
	local CopyTo = pluginSection and ElvDB.profiles[E.global.profileCopy.selected][pluginSection][section] or ElvDB.profiles[E.global.profileCopy.selected][section]
	local CopyDefault = pluginSection and P[pluginSection][section] or P[section]
	if type(module) == "table" and next(module) then --This module is not an empty table
		MC:CopyTable(CopyFrom, CopyTo, CopyDefault, module)
	elseif type(module) == "boolean" then --Copy over entire section of profile subgroup
		E:CopyTable(CopyTo, CopyDefault)
		E:CopyTable(CopyTo, CopyFrom)
	else
		error(format("Provided section name \"%s\" does not have a valid copy template.", section))
	end
end

function MC:CopyMovers(mode)
	if not E.db.movers then E.db.movers = {} end --Nothing was moved in cutrrent profile
	if not ElvDB.profiles[E.global.profileCopy.selected].movers then ElvDB.profiles[E.global.profileCopy.selected].movers = {} end --Nothing was moved in selected profile
	local CopyFrom, CopyTo
	if mode == "export" then
		CopyFrom, CopyTo = E.db.movers, ElvDB.profiles[E.global.profileCopy.selected].movers
	else
		CopyFrom, CopyTo = ElvDB.profiles[E.global.profileCopy.selected].movers or {}, E.db.movers
	end

	for moverName in pairs(E.CreatedMovers) do
		if E.global.profileCopy.movers[moverName] then
			CopyTo[moverName] = CopyFrom[moverName]
		end
	end
	E:SetMoversPositions()
end

function MC:Initialize()
	self.Initialized = true
end

local function InitializeCallback()
	MC:Initialize()
end

E:RegisterModule(MC:GetName(), InitializeCallback)