GuildRecipesOcto = GuildRecipesOcto or {}

---@class GuildRecipesOcto
local M = GuildRecipesOcto

local QUALITY_COLORS = {
	[ "ff9d9d9d" ] = 0, -- poor (gray)
	[ "ffffffff" ] = 1, -- common (white)
	[ "ff1eff00" ] = 2, -- uncommon (green)
	[ "ff0070dd" ] = 3, -- rare (blue)
	[ "ffa335ee" ] = 4, -- epic (purple)
	[ "ffff8000" ] = 5, -- legendary (orange)
}

M.TRADE_SKILL_LOCALIZATION = {
	Alchemy = {
		enUS = "Alchemy",
		deDE = "Alchimie",
		frFR = "Alchimie",
		esES = "Alquimia",
		koKR = "연금술",
		zhCN = "炼金术",
		zhTW = "鍊金術",
	},
	Blacksmithing = {
		enUS = "Blacksmithing",
		deDE = "Schmiedekunst",
		frFR = "Forge",
		esES = "Herrería",
		koKR = "대장기술",
		zhCN = "锻造",
		zhTW = "鍛造",
	},
	Engineering = {
		enUS = "Engineering",
		deDE = "Ingenieurskunst",
		frFR = "Ingénierie",
		esES = "Ingeniería",
		koKR = "기계공학",
		zhCN = "工程学",
		zhTW = "工程學",
	},
	Leatherworking = {
		enUS = "Leatherworking",
		deDE = "Lederverarbeitung",
		frFR = "Travail du cuir",
		esES = "Peletería",
		koKR = "가죽세공",
		zhCN = "制皮",
		zhTW = "製皮",
	},
	Tailoring = {
		enUS = "Tailoring",
		deDE = "Schneiderei",
		frFR = "Couture",
		esES = "Sastrería",
		koKR = "재봉술",
		zhCN = "裁缝",
		zhTW = "裁縫",
	},
	Enchanting = {
		enUS = "Enchanting",
		deDE = "Verzauberkunst",
		frFR = "Enchantement",
		esES = "Encantamiento",
		koKR = "마법부여",
		zhCN = "附魔",
		zhTW = "附魔",
	},
	Jewelcrafting = {
		enUS = "Jewelcrafting",
	},
}

function M.build_reverse_trade_map( locale )
	local map = {}
	for internal, locs in pairs( M.TRADE_SKILL_LOCALIZATION ) do
		local localized = locs[ locale ]
		if localized then
			map[ localized ] = internal
		end
	end
	return map
end

---@param item_link string
---@return integer? id
---@return string? name
---@return integer? quality
function M.parse_item_link( item_link )
	if type( item_link ) ~= "string" then return nil, nil, nil end

	local item_id = tonumber( string.match( item_link, ":(%d+)" ) )
	local name = string.match( item_link, "|h%[(.-)%]|h" )
	local quality

	local color = string.match( item_link, "|c(%x%x%x%x%x%x%x%x)" )
	if color then
		quality = QUALITY_COLORS[ string.lower( color ) ]
	else
		local _, _, q = GetItemInfo( item_id )
		quality = q or 1
	end

	return item_id, name, quality
end

---@param item Item
---@return string
function M.get_item_name_colorized( item )
	local color = ITEM_QUALITY_COLORS[ item.quality or 1 ]
	local hex = string.format( "%02x%02x%02x", color.r * 255, color.g * 255, color.b * 255 )

	return string.format( "|cFF%s%s|r", hex, item.name )
end

---@param id integer
---@param name string
---@param quality integer
---@return string
function M.make_item_link( id, name, quality )
	local color = ITEM_QUALITY_COLORS[ quality or 1 ]
	local hex = string.format( "%02x%02x%02x", color.r * 255, color.g * 255, color.b * 255 )

	return string.format( "|cFF%s|Hitem:%d:0:0:0|h[%s]|h|r", hex, id, name )
end

function M.make_enchant_link( id, name )
	return string.format( "|cFF%s|Henchant:%d|h[%s]|h|r", "71d5ff", id, name )
end

function M.colorize_player_by_class( name, class )
	if not class then return name end
	local color = RAID_CLASS_COLORS[ string.upper( class ) ]
	if not color.colorStr then
		color.colorStr = string.format( "ff%02x%02x%02x", color.r * 255, color.g * 255, color.b * 255 )
	end
	return "|c" .. color.colorStr .. name .. "|r"
end

function M.clean_string( input )
	input = string.gsub( input, "^%s+", "" )
	input = string.gsub( input, "%s+$", "" )
	input = string.gsub( input, "|c%x%x%x%x%x%x%x%x", "" )
	input = string.gsub( input, "|r", "" )

	return input
end

---@param player_name string
---@return boolean
---@nodiscard
function M.guild_member_online( player_name )
	for i = 1, GetNumGuildMembers() do
		local name, _, _, _, _, _, _, _, online = GetGuildRosterInfo( i )
		if player_name == name and online == 1 then
			return true
		end
	end

	return false
end

---@return table<string, boolean> -- name -> online, built from a single pass over the guild roster
---@nodiscard
-- Use this instead of calling guild_member_online() in a loop (e.g. once per
-- synced player, or once per recipe row) -- each guild_member_online() call
-- re-scans the entire roster, so doing that repeatedly is O(n*m) and can
-- visibly stutter the game when triggered by a frequent event.
function M.build_online_roster()
	local online = {}
	for i = 1, GetNumGuildMembers() do
		local name, _, _, _, _, _, _, _, is_online = GetGuildRosterInfo( i )
		if name and is_online == 1 then
			online[ name ] = true
		end
	end
	return online
end

function M.get_server_timestamp()
	local server_hour, server_min = GetGameTime()
	local local_time = date( "*t" )

	local t = {
		year = local_time.year,
		month = local_time.month,
		day = local_time.day,
		hour = server_hour,
		min = server_min,
		sec = 0,
	}

	local hour_diff = server_hour - local_time.hour
	if hour_diff <= -20 then
		t.day = t.day + 1
	elseif hour_diff >= 20 then
		t.day = t.day - 1
	end

	return time( t )
end

---@param message string
---@param short boolean?
function M.info( message, short )
	local tag = string.format( "|c%s%s|r", M.tagcolor, short and "GRO" or "GuildRecipesOcto" )
	DEFAULT_CHAT_FRAME:AddMessage( string.format( "%s: %s", tag, message ) )
end

---@param message string
function M.error( message )
	local tag = string.format( "|c%s%s|r|cffff0000%s|r", M.tagcolor, "GR", "ERROR" )
	DEFAULT_CHAT_FRAME:AddMessage( string.format( "%s: %s", tag, message ) )
end

function M.debug( message )
	if M.debug_enabled then
		M.info( message, true )
	end
end

---@param t string[]
---@return string
---@nodiscard
function M.table_to_comma_separated( t )
	local s = ""
	for _, v in pairs( t ) do
		if s ~= "" then s = s .. "," end
		s = s .. tostring( v )
	end
	return s
end

---@param s string
---@return string[]
---@nodiscard
function M.comma_separated_to_table( s )
	local t = {}
	for v in string.gmatch( s, "([^,]+)" ) do
		table.insert( t, v )
	end
	return t
end

---@param value string|number
---@param t table
---@param extract_field string?
---@nodiscard
function M.find( value, t, extract_field )
	if type( t ) ~= "table" or M.count( t ) == 0 then return nil end

	for i, v in pairs( t ) do
		local val = extract_field and v[ extract_field ] or v
		if val == value then return v, i end
	end

	return nil
end

---@param t table
---@param field string?
---@return number
function M.count( t, field )
	local count = 0
	for _, e in pairs( t ) do
		if field and e[ field ] and e[ field ] > 0 or not field then
			count = count + 1
		end
	end

	return count
end

---@param recipes table
---@param player string
---@return number
function M.count_recipes( recipes, player )
	local _, player_id = M.find( player, M.db.players )
	local count = 0

	if player_id and recipes then
		for _, recipe in pairs( recipes ) do
			if M.find( tostring( player_id ), M.comma_separated_to_table( recipe.p ) ) then
				count = count + 1
			end
		end
	end

	return count
end

---@param id integer
---@param ufunc function
---@param data table?
---@return nil
function M.get_item_info( id, ufunc, data )
	local function callback( item_id, cbfunc, _data )
		local info = { GetItemInfo( item_id ) }
		cbfunc( {
			id = item_id,
			name = info[ 1 ],
			link = info[ 2 ],
			quality = info[ 3 ],
			texture = info[ 9 ],
		}, _data )
	end

	if GetItemInfo( id ) then
		callback( id, ufunc, data )
		return
	end

	if not M.item_info_frame then
		M.item_info_frame = CreateFrame( "Frame" )
	end

	if not M.get_item_info_items then
		M.get_item_info_items = {}
	end

	table.insert( M.get_item_info_items, {
		id = id,
		ufunc = ufunc,
		data = data
	} )

	if not M.item_info_frame:GetScript( "OnUpdate" ) then
		local elapsed = 0
		local poll_interval = 0.1

		M.item_info_frame:SetScript( "OnUpdate", function()
			local item_data = M.get_item_info_items[ 1 ]
			if not item_data then
				M.item_info_frame:SetScript( "OnUpdate", nil )
				return
			end

			elapsed = elapsed + arg1
			if elapsed < poll_interval then return end
			elapsed = 0

			M.tooltip:SetOwner( WorldFrame, "ANCHOR_NONE" )
			M.tooltip:SetHyperlink( "item:" .. item_data.id )

			if GetItemInfo( item_data.id ) then
				callback( item_data.id, item_data.ufunc, item_data.data )
				table.remove( M.get_item_info_items, 1 )
			end
		end )
	end
end

---@param link string -- item link or spell link
---@param callback function -- function(lines: string[]|nil) end
---@param max_attempts number|nil -- retry limit (default 5)
---@param delay number|nil
function M.scan_tooltip( link, callback, max_attempts, delay )
	---@class TooltipScan
	---@field link string
	---@field callback fun(lines: string[]|nil)
	---@field max_attempts number
	---@field delay number
	---@field attempt number
	---@field elapsed number
	---@field initialized boolean

	---@type TooltipScan | nil
	local current_scan = nil
	local scan_queue = {}
	local start_next_scan

	local function process_scan()
		if not current_scan then
			M.tooltip_scan_frame:SetScript( "OnUpdate", nil )
			return
		end

		current_scan.elapsed = current_scan.elapsed + arg1
		if current_scan.elapsed < current_scan.delay then return end

		current_scan.elapsed = 0
		current_scan.attempt = current_scan.attempt + 1

		M.tooltip:SetOwner( WorldFrame, "ANCHOR_NONE" )
		M.tooltip:ClearLines()
		M.tooltip:SetHyperlink( current_scan.link )

		local num_lines = M.tooltip:NumLines()
		if num_lines and num_lines > 0 then
			local lines = {}
			for i = 1, num_lines do
				local line = getglobal( "GuildRecipesOctoTooltipTextLeft" .. i )
				if line then
					table.insert( lines, line:GetText() or "" )
				end
			end

			local scan_callback = current_scan.callback
			current_scan = nil
			M.tooltip_scan_frame:SetScript( "OnUpdate", nil )
			scan_callback( lines )
			start_next_scan()
			return
		end

		if current_scan.attempt >= current_scan.max_attempts then
			M.tooltip_scan_frame:SetScript( "OnUpdate", nil )
			M.debug( "Failed to scan tooltip for " .. current_scan.link )
			if current_scan.callback then
				current_scan.callback( nil )
			end

			current_scan = nil
			start_next_scan()
		end
	end

	function start_next_scan()
		current_scan = table.remove( scan_queue, 1 )

		if not current_scan then
			M.tooltip_scan_frame:SetScript( "OnUpdate", nil )
			return
		end

		current_scan.attempt = 0
		current_scan.elapsed = 0
		M.tooltip_scan_frame:SetScript( "OnUpdate", process_scan )
	end

	if not M.tooltip_scan_frame then
		M.tooltip_scan_frame = CreateFrame( "Frame" )
	end

	table.insert( scan_queue, {
		link = link,
		callback = callback,
		max_attempts = max_attempts or 5,
		delay = delay or 0.1,
	} )

	if not current_scan then
		start_next_scan()
	end
end

---@param tradeskill string
---@return integer
---@nodiscard
function M.tradeskill_hash( tradeskill )
	local keys = {}
	local s = ""
	local ts = M.db.tradeskills[ tradeskill ]

	if ts then
		for k in pairs( ts ) do
			table.insert( keys, k )
		end

		table.sort( keys )

		for i = 1, getn( keys ) do
			local _, c = string.gsub( ts[ keys[ i ] ].p, ",", "" )
			s = s .. keys[ i ] .. "=" .. c .. ";"
		end
	end

	return M.hash_string( s )
end

---@param str string
---@return integer
function M.hash_string( str )
	local hash = 5381
	for i = 1, string.len( str ) do
		local c = string.byte( str, i )
		hash = mod( hash * 33 + c, 4294967296 )
	end

	return hash
end

--- @param hex string
--- @return number r
--- @return number g
--- @return number b
--- @return number a
function M.hex_to_rgba( hex )
	local r, g, b, a = string.match( hex, "^#?(%x%x)(%x%x)(%x%x)(%x?%x?)$" )

	r, g, b = tonumber( r, 16 ) / 255, tonumber( g, 16 ) / 255, tonumber( b, 16 ) / 255
	a = a ~= "" and tonumber( a, 16 ) / 255 or 1
	return r, g, b, a
end

---@param o any
---@return string
function M.dump( o )
	if not o then return "nil" end
	if type( o ) ~= 'table' then return tostring( o ) end

	local entries = 0
	local s = "{"

	for k, v in pairs( o ) do
		if (entries == 0) then s = s .. " " end

		local key = type( k ) ~= "number" and '"' .. k .. '"' or k

		if (entries > 0) then s = s .. ", " end

		s = s .. "[" .. key .. "] = " .. M.dump( v )
		entries = entries + 1
	end

	if (entries > 0) then s = s .. " " end
	return s .. "}"
end

---@diagnostic disable-next-line: undefined-field
if not string.gmatch then string.gmatch = string.gfind end

---@diagnostic disable-next-line: duplicate-set-field
string.match = function( str, pattern )
	if not str then return nil end

	local _, _, r1, r2, r3, r4, r5, r6, r7, r8, r9 = string.find( str, pattern )
	return r1, r2, r3, r4, r5, r6, r7, r8, r9
end

return M