#! /usr/bin/env lua

local commands = {}

function trim(s)

  return s:match("^%s*(.-)%s*$")

end

function rtrim(s)

  return s:gsub("%s+$", "")

end

function string.starts(String, Start)

   return string.sub(String, 1, string.len(Start)) == Start

end

function mcbot_register_command (name, object)

    commands[name] = object

end

function mcbot_get_command_list ()

    return commands

end

require "cmds.help"

require "cmds.wtf"

require "cmds.calc"

require "cmds.spell"

require "cmds.dict"

require "cmds.littre"

require "cmds.misc"

require "cmds.xep"

require "cmds.rfc"

require "cmds.mcabber_bts"

require "cmds.bofh"

require "cmds.xmpp"

require "cmds.tvcal"

function process (line, botdata, muc, cmdprefix)

    local n

    line = trim(line)

    line, n = line:gsub("^"..botdata.nickname.."[,:]?%s+", "")

    if muc and n ~= 1 then

        if cmdprefix and line:starts(cmdprefix) then

            line = line:sub(string.len(cmdprefix)+1)

            line = line:gsub("^%s*", "")

        else

            return nil, nil

        end

    end

    local cmd, arg

    cmd = line:match("^(%w+)%s*[!]*$")

    if not cmd then

        -- Check if there are arguments

        cmd, arg = line:match("^(%w+)%s+(.*)")

    end

    if cmd then

        local lccmd = cmd:lower()

        for name, obj in pairs(commands) do

            if lccmd == name then

                return obj.cmd(arg, botdata, cmd)

            end

            if obj.aliases then

                for i, alias in ipairs(obj.aliases) do

                    if lccmd == alias then

                        return obj.cmd(arg, botdata, cmd)

                    end

                end

            end

        end

    else

        -- Ignore smileys

        if line:match("^[:;8]'?%-?[D()|/\\%[%]pPoO$@]+%s*$") then return nil,nil end

        if line:match("^^^%s*$") then return nil,nil end

    end

    return "I don't understand, Sir"

end