Vendor Tracking Addon

-- addon setup
_addon.name = 'vendor'
_addon.version = '1.0'
_addon.author = 'kaffy'
_addon.commands = {'vendor'}

local packets = require('packets')
local res_items = require('resources').items
local log_file = 'junk.txt'
local logging_enabled = false
local seen_items = {}

-- utility: write to file
local function log_item_name(item_id)
    local item = res_items[item_id]
    if item and logging_enabled and not seen_items[item.name] then
        seen_items[item.name] = true
        local f = io.open(windower.addon_path .. log_file, 'a')
        if f then
            f:write(item.name .. '\n')
            f:close()
        end
    end
end

-- hook outgoing packet: 0x084 = Sell item to NPC
windower.register_event('outgoing chunk', function(id, data, modified, injected, blocked)
    if id == 0x084 then
        local packet = packets.parse('outgoing', data)
        local item_id = packet.Item
        log_item_name(item_id)
    end
end)

-- command handler
windower.register_event('addon command', function(cmd)
    if cmd:lower() == 'toggle' then
		logging_enabled = not logging_enabled
		windower.add_to_chat(123, 'vendor: logging ' .. (logging_enabled and 'enabled' or 'disabled'))
	end
	if cmd:lower() == 'clean' then
        local path = windower.addon_path .. 'junk.txt'
        local f = io.open(path, 'r')
        if not f then
            windower.add_to_chat(123, 'vendor: junk.txt not found.')
            return
        end

        local items = {}
        for line in f:lines() do
            local name = line:match('^%s*(.-)%s*$') -- trim whitespace
            if name ~= '' then
                items[name] = true
            end
        end
        f:close()

        -- convert to sorted list
        local sorted = {}
        for name in pairs(items) do
            table.insert(sorted, name)
        end
        table.sort(sorted)

        -- write to Lua table
        local out = io.open(windower.addon_path .. 'junk.lua', 'w')
        if out then
            out:write('return {\n')
            for _, name in ipairs(sorted) do
                out:write(string.format("    %q,\n", name))
            end
            out:write('}\n')
            out:close()
            windower.add_to_chat(123, 'vendor: junk.lua written.')
        else
            windower.add_to_chat(123, 'vendor: failed to write junk.lua.')
        end
    end
end)

-- addon setup
_addon.name = 'vendor'
_addon.version = '1.1'
_addon.author = 'kaffy'
_addon.commands = {'vendor'}

local packets = require('packets')
local res_items = require('resources').items
local junk_table_path = windower.addon_path .. 'junk.lua'
local logging_enabled = false
local seen_items = {}

-- load junk table
local function load_junk_table()
    local f = loadfile(junk_table_path)
    if f then
        local ok, data = pcall(f)
        if ok and type(data) == 'table' then
            for _, name in ipairs(data) do
                seen_items[name] = true
            end
        end
    end
end

load_junk_table()

local function log_item_name(item_id)
    local item = res_items[item_id]
    if item and logging_enabled and not seen_items[item.name] then
        seen_items[item.name] = true
    end
end

local function save_junk_table()
    local sorted = {}
    for name in pairs(seen_items) do
        table.insert(sorted, name)
    end
    table.sort(sorted)

    local out = io.open(junk_table_path, 'w')
    if out then
        out:write('return {\n')
        for _, name in ipairs(sorted) do
            out:write(string.format("    %q,\n", name))
        end
        out:write('}\n')
        out:close()
        return true
    end
    return false
end

-- hook outgoing packet: 0x084 = Sell item to NPC
windower.register_event('outgoing chunk', function(id, data, modified, injected, blocked)
    if id == 0x084 then
        local packet = packets.parse('outgoing', data)
        local item_id = packet.Item
        log_item_name(item_id)
    end
end)

-- command handler
windower.register_event('addon command', function(cmd)
    if cmd:lower() == 'toggle' then
		logging_enabled = not logging_enabled
		windower.add_to_chat(123, 'vendor: logging ' .. (logging_enabled and 'enabled' or 'disabled'))
	end
	if cmd:lower() == 'clean' then
    if save_junk_table() then
        windower.add_to_chat(123, 'vendor: junk.lua updated.')
    else
        windower.add_to_chat(123, 'vendor: failed to write junk.lua.')
    end
	end
end)

windower.register_event('unload', save_junk_table)