ComputerCraft EnderChat Server

-- Chat Server with MiniChat support
local modem = peripheral.find("modem")
if not modem then
    print("Ender Modem not found!")
    return
end

local defaultChannel = 1
modem.open(defaultChannel)

-- Table to store chat logs and users for each MiniChat channel
local channels = {}

-- Function to add a user to a channel
function addUserToChannel(channel, username)
    if not channels[channel] then
        -- Create a new channel with the user as owner
        channels[channel] = {
            owner = username,
            users = {},
            messages = {}
        }
    end

    -- Add the user to the channel if they are not already in
    if not channels[channel].users[username] then
        channels[channel].users[username] = {
            role = "normal"  -- normal, muted, banned, etc.
        }
    end
end

-- Function to handle new messages
function handleChatMessage(channel, username, message)
    -- Make sure the user is in the channel and not banned
    if channels[channel] and channels[channel].users[username] then
        -- Store the message in the channel history
        local formattedMessage = "[" .. username .. "]: " .. message
        table.insert(channels[channel].messages, formattedMessage)

        -- Broadcast the message to all users in the channel
        for user, _ in pairs(channels[channel].users) do
            modem.transmit(defaultChannel, defaultChannel, {type="message", channel=channel, data=formattedMessage})
        end
    end
end

-- Function to handle incoming requests
function handleRequest(event, side, freq, replyFreq, message)
    if message.type == "join" then
        addUserToChannel(message.channel, message.username)
        modem.transmit(defaultChannel, replyFreq, {type="status", data="Joined channel: " .. message.channel})

    elseif message.type == "message" then
        handleChatMessage(message.channel, message.username, message.message)
    end
end

-- Main loop to handle incoming messages
print("Server is running...")

while true do
    local event, side, freq, replyFreq, message, dist = os.pullEvent("modem_message")
    if freq == defaultChannel and type(message) == "table" then
        handleRequest(event, side, freq, replyFreq, message)
    end
end