#!/usr/bin/env python

import os
import sys

import supybot

import fix

import re
import sets
import pydoc
import pprint
import socket
import logging
import optparse
from itertools import imap

import ansi
import utils
import ircutils
import registry

import questions
from questions import output, yn, anything, something, expect, getpass

def getPlugins(pluginDirs):
    filenames = []
    for pluginDir in pluginDirs:
        try:
            filenames.extend(os.listdir(pluginDir))
        except OSError:
            continue
    plugins = sets.Set([])
    for filename in filenames:
        if filename.endswith('.py') and filename[0].isupper():
            plugins.add(os.path.splitext(filename)[0])
    plugins.discard('Owner')
    plugins = list(plugins)
    plugins.sort()
    return plugins

def loadPlugin(name):
    import Owner
    try:
        module = Owner.loadPluginModule(name)
        if hasattr(module, 'Class'):
            return module
        else:
            output("""That plugin loaded fine, but didn't seem to be a real
            Supybot plugin; there was no Class variable to tell us what class
            to load when we load the plugin.  We'll skip over it for now, but
            you can always add it later.""")
            return None
    except Exception, e:
        output("""We encountered a bit of trouble trying to load plugin %r.
        Python told us %r.  We'll skip over it for now, you can always add it
        later.""" % (name, utils.exnToString(e)))
        return None

def describePlugin(module, showUsage):
    if module.__doc__:
        output(module.__doc__, unformatted=False)
    elif hasattr(module.Class, '__doc__'):
        output(module.Class.__doc__, unformatted=False)
    else:
        output("""Unfortunately, this plugin doesn't seem to have any
        documentation.  Sorry about that.""")
    if showUsage:
        if hasattr(module, 'example'):
            if yn('This plugin has a usage example.  '
                  'Would you like to see it?', default=False):
                pydoc.pager(module.example)
        else:
            output("""This plugin has no usage example.""")
    
def clearLoadedPlugins(plugins, pluginRegistry):
    for plugin in plugins:
        try:
            pluginKey = pluginRegistry.get(plugin)
            if pluginKey():
                plugins.remove(plugin)
        except registry.NonExistentRegistryEntry:
            continue

_windowsVarRe = re.compile(r'%(\w+)%')
def getDirectoryName(default):
    done = False
    while not done:
        dir = something('What directory do you want to use?',
                       default=os.path.join(os.curdir, default))
        dir = os.path.expanduser(dir)
        dir = _windowsVarRe.sub(r'$\1', dir)
        dir = os.path.expandvars(dir)
        dir = os.path.abspath(dir)
        try:
            os.makedirs(dir)
            done = True
        except OSError, e:
            if e.args[0] != 17: # File exists.
                output("""Sorry, I couldn't make that directory for some
                reason.  The Operating System told me %s.  You're going to
                have to pick someplace else.""" % e)
            else:
                done = True
    return os.path.expandvars(os.path.expanduser(dir))

def getRegistryValue(setting, prompt='', showHelp=True, showType=True):
    if not prompt:
        prompt = 'What would you like to set this option to?'
    if showHelp:
        help = ''
        if showType:
            help = '%s:   ' % type(setting).__name__
        help = '%s%s' % (help, setting.help)
        output(textwrap.fill(help), unformatted=False)
    ret = None
    while not ret:
        try:
            setting.set(expect(prompt, [], default=str(setting)))
            ret = setting()
        except registry.InvalidRegistryValue, reason:
            output(str(reason))
    return ret

def main():
    import log
    import conf
    log._stdoutHandler.setLevel(100) # *Nothing* gets through this!
    parser = optparse.OptionParser(usage='Usage: %prog [options] [configFile]',
                                   version='Supybot %s' % conf.version)
    parser.add_option('', '--allow-root', action='store_true',
                      dest='allowRoot',
                      help='Determines whether the bot will be allowed to run'
                           'as root.  You don\'t want this.  Don\'t do it.'
                           'Even if you think you want it, you don\'t.  '
                           'You\'re probably dumb if you do this.')
    (options, args) = parser.parse_args()
    if os.name == 'posix':
        if os.getuid() == 0 or os.geteuid() == 0 and not options.allowRoot:
            sys.stderr.write('Please, don\'t run this as root.\n')

    filename = ''
    if len(args) > 1:
        parser.error('the wizard takes one argument at most.')
    elif len(args) == 1:
        filename = args[0]
        try:
            registry.open(filename)
        except OSError, msg:
            raise SystemExit, 'Unable to open file %s: %s' % (filename, msg)
        output("""It seems you already have a configuration file. We'll run
        you through the options so you can change them if you want.""")
    else:
        output("""This is a wizard to help you start running supybot.  What it
        will do is create a single Python file whose effect will be that of
        starting an IRC bot with the options you select here.  So hold on tight
        and be ready to be interrogated :)""")


    output("""First of all, we can bold the questions you're asked so you can
    easily distinguish the mostly useless blather (like this) from the
    questions that you actually have to answer.""")
    if yn('Would you like to try this bolding?', default=True):
        questions.useBold = True
        if not yn('Do you see this in bold?'):
            output("""Sorry, it looks like your terminal isn't ANSI compliant.
            Try again some other day, on some other terminal :)""")
            questions.useBold = False
        else:
            output("""Great!""")

    ###
    # Preliminary questions.
    ###
    output("""We've got some preliminary things to get out of the way before
    we can really start asking you questions that directly relate to what your
    bot is going to be like.""")

    # Advanced?
    output("""We want to know if you consider yourself an advanced Supybot
    user because some questions are just utterly boring and useless for new
    users.  Others might not make sense unless you've used Supybot for some
    time.""")
    advanced = yn('Are you an advanced Supybot user?', default=False)
    
    ### Directories.
    # We set these variables in cache because otherwise conf and log will
    # create directories for the default values, which might not be what the
    # user wants.
    output("""Now we've got to ask you some questions about where some of
    your directories are (or, perhaps, will be :)).  If you're running this
    wizard from the directory you'll actually be starting your bot from and
    don't mind creating some directories in the current directory, then just
    don't give answers to these questions and we'll create the directories we
    need right here in this directory.""")

    # conf.supybot.directories.log
    output("""Your bot will need to put his logs somewhere.  Do you have any
    specific place you'd like them?  If not, just press enter and we'll make
    a directory named "logs" right here.""")
    try:
        logDir = registry._cache['supybot.directories.log']
        logDir = utils.safeEval(logDir)
        logDir = getDirectoryName(logDir)
    except KeyError:
        logDir = getDirectoryName('logs')
    conf.supybot.directories.log.setValue(logDir)

    # conf.supybot.directories.data
    output("""Your bot will need to put various data somewhere.  Things like
    databases, downloaded files, etc.  Do you have any specific place you'd
    like the bot to put these things?  If not, just press enter and we'll make
    a directory named "data" right here.""")
    try:
        dataDir = registry._cache['supybot.directories.data']
        dataDir = utils.safeEval(dataDir)
        dataDir = getDirectoryName(dataDir)
    except KeyError:
        dataDir = getDirectoryName('data')
    conf.supybot.directories.data.setValue(dataDir)

    # conf.supybot.directories.conf
    output("""Your bot must know where to find his configuration files.  It'll
    probably only make one or two, but it's gotta have some place to put them.
    Where should that place be?  If you don't care, just press enter and we'll
    make a directory right here named "conf" where it'll store his stuff. """)
    try:
        confDir = registry._cache['supybot.directories.conf']
        confDir = utils.safeEval(confDir)
        confDir = getDirectoryName(confDir)
    except KeyError:
        confDir = getDirectoryName('conf')
    conf.supybot.directories.conf.setValue(confDir)
    
    # pluginDirs
    output("""Your bot will also need to know where to find his plugins at.
    Of course, he already knows where the plugins that he came with are, but
    your own personal plugins that you write for will probably be somewhere
    else.""")
    pluginDirs = conf.supybot.directories.plugins()
    output("""Currently, the bot knows about the following directories:""")
    output(utils.commaAndify(pluginDirs))
    while yn('Would you like to add another plugin directory?',
             default=False):
        pluginDir = getDirectoryName('plugins')
        if pluginDir not in pluginDirs:
            pluginDirs.append(pluginDir)
    conf.supybot.directories.plugins.setValue(pluginDirs)

    output("Good!  We're done with the directory stuff.")

    ###
    # Bot stuff
    ###
    output("""Now we're going to ask you things that actually relate to the
    bot you'll be running.""")

    # conf.supybot.server
    # Force the user into specifying a server if he didn't have one already
    try:
        defaultServer = registry._cache['supybot.server']
        defaultServer = utils.safeEval(defaultServer)
        defaultServer = defaultServer.split(':')[0]
    except KeyError:
        defaultServer = None
    server = None
    while not server:
        serverString = something('What server would you like to connect to?',
                                 default=defaultServer)
        try:
            output("""Looking up %s...""" % serverString)
            ip = socket.gethostbyname(serverString)
        except:
            output("""Sorry, I couldn't find that server.  Perhaps you
            misspelled it?""")
            continue
        output("""Found %s (%s).""" % (serverString, ip))
        output("""IRC Servers almost always accept connections on port
        6667.  They can, however, accept connections anywhere their admin
        feels like he wants to accept connections from.""")
        if yn('Does this server require connection on a non-standard port?',
              default=False):
            port = 0
            while not port:
                port = something('What port is that?')
                try:
                    i = int(port)
                    if not (0 < i < 65536):
                        raise ValueError
                except ValueError:
                    output("""That's not a valid port.""")
                    port = 0
        else:
            port = 6667
        server = ':'.join(map(str, [serverString, port]))
    conf.supybot.server.set(server)

    # conf.supybot.nick
    # Force the user into specifying a nick if he didn't have one already
    try:
        defaultNick = registry._cache['supybot.nick']
        defaultNick = utils.safeEval(defaultNick)
    except KeyError:
        defaultNick = None
    while True:
        nick = something('What nick would you like your bot to use?',
                         default=defaultNick)
        try:
            conf.supybot.nick.set(nick)
            break
        except registry.InvalidRegistryValue:
            output("""That's not a valid nick.  Go ahead and pick another.""")

    # conf.supybot.user
    if advanced:
        output("""If you've ever done a /whois on a person, you know that IRC
        provides a way for users to show the world their full name.  What would
        you like your bot's full name to be?  If you don't care, just press
        enter and it'll be the same as your bot's nick.""")
        user = ''
        try:
            defaultUser = registry._cache['supybot.user']
            defaultUser = utils.safeEval(defaultUser)
        except KeyError:
            defaultUser = nick
        user = something('What would you like your bot\'s full name to be?',
                         default=defaultUser)
        conf.supybot.user.set(user)

    # conf.supybot.ident (if advanced)
    try:
        defaultIdent = registry._cache['supybot.ident']
        defaultIdent = utils.safeEval(defaultIdent)
    except KeyError:
        defaultIdent = nick
    if advanced:
        output("""IRC servers also allow you to set your ident, which they
        might need if they can't find your identd server.  What would you
        like your ident to be?  If you don't care, press enter and we'll
        use the same string as your bot's nick.""")
        while True:
            ident = something('What would you like your bot\'s ident to be?',
                              default=defaultIdent)
            try:
                conf.supybot.ident.set(ident)
                break
            except registry.InvalidRegistryValue:
                output("""That was not a valid ident.
                       Go ahead and pick another.""")
    else:
        conf.supybot.ident.set(defaultIdent)

    # conf.supybot.password
    output("""Some servers require a password to connect to them.  Most
    public servers don't.  If you try to connect to a server and for some
    reason it just won't work, it might be that you need to set a
    password.""")
    if yn('Do you want to set such a password?', default=False):
        conf.supybot.password.set(getpass())

    # conf.supybot.channels
    output("""Of course, having an IRC bot isn't the most useful thing in the
    world unless you can make that bot join some channels.""")
    if yn('Do you want your bot to join some channels when he connects?',
          default=True):
        defaultChannels = ' '.join(conf.supybot.channels())
        output("""Seperate channels with spaces.  If the channel is locked
                  with a key, follow the channel name with the key seperated
                  by a comma. For example:
                  #supybot #mychannel,mykey #otherchannel""");
        while True:
            channels = something('What channels?', default=defaultChannels)
            try:
                conf.supybot.channels.set(channels)
                break
            except registry.InvalidRegistryValue:
                # FIXME: say which ones weren't channels.
                output("""Not all of those are valid IRC channels.  Be sure to
                prefix the channel with # (or +, or !, or &, but no one uses
                those channels, really).""")
    else:
        conf.supybot.channels.setValue([])

    ###
    # Plugins
    ###
    def configurePlugin(module, advanced):
        if hasattr(module, 'configure'):
            output("""Beginning configuration for %s...""" %
                   module.Class.__name__)
            module.configure(advanced)
            print # Blank line :)
            output("""Done!""")
        else:
            conf.registerPlugin(module.__name__, currentValue=True)

    plugins = getPlugins(pluginDirs)
    for s in ('Admin', 'User', 'Channel', 'Misc', 'Config'):
        configurePlugin(loadPlugin(s), advanced)
    clearLoadedPlugins(plugins, conf.supybot.plugins)

    output("""Now we're going to run you through plugin configuration. There's
           a variety of plugins in supybot by default, but you can create and
           add your own, ofcourse. We'll allow you to take a look at the known
           plugins' descriptions and configure them
           if you like what you see.""")

    # bulk
    addedBulk = False
    if advanced and yn('Would you like to add plugins en masse first?'):
        addedBulk = True
        output("""The available plugins are: %s.""" % \
                                                   utils.commaAndify(plugins))
        output("""What plugins would you like to add?  If you've changed your
        mind and would rather not add plugins in bulk like this, just press
        enter and we'll move on to the individual plugin configuration.""")
        massPlugins = anything('Separate plugin names by spaces:')
        for name in re.split(r',?\s+', massPlugins):
            module = loadPlugin(name)
            if module is not None:
                configurePlugin(module, advanced)
                clearLoadedPlugins(plugins, conf.supybot.plugins)

    # individual
    if yn('Would you like to look at plugins individually?'):
        output("""Next comes your oppurtunity to learn more about the plugins
        that are available and select some (or all!) of them to run in your
        bot.  Before you have to make a decision, of course, you'll be able to
        see a short description of the plugin and, if you choose, an example
        session with the plugin.  Let's begin.""")
        # until we get example strings again, this will default to false
        #showUsage =yn('Would you like the option of seeing usage examples?')
        showUsage = False
        name = expect('What plugin would you like to look at?',
                      plugins, acceptEmpty=True)
        while name:
            module = loadPlugin(name)
            if module is not None:
                describePlugin(module, showUsage)
                if yn('Would you like to load this plugin?', default=True):
                    configurePlugin(module, advanced)
                    clearLoadedPlugins(plugins, conf.supybot.plugins)
            if not yn('Would you like add another plugin?'):
                break
            name = expect('What plugin would you like to look at?', plugins)
    
    ###
    # Sundry
    ###
    output("""Although supybot offers a supybot-adduser.py script, with which
    you can add users to your bot's user database, it's *very* important that
    you have an owner user for you bot.""")
    print '***', conf.supybot.directories.conf()
    if yn('Would you like to add an owner user for your bot?', default=True):
        import ircdb
        name = something('What should the owner\'s username be?')
        try:
            id = ircdb.users.getUserId(name)
            u = ircdb.users.getUser(id)
            if u.checkCapability('owner'):
                output("""That user already exists, and has owner capabilities
                already.  Perhaps you added it before? """)
                if yn('Do you want to remove its owner capability?',
                      default=False):
                    u.removeCapability('owner')
                    ircdb.users.setUser(id, u)
            else:
                output("""That user already exists, but doesn't have owner
                capabilities.""")
                if yn('Do you want to add to it owner capabilities?',
                      default=False):
                    u.addCapability('owner')
                    ircdb.users.setUser(id, u)
        except KeyError:
            password = getpass('What should the owner\'s password be?')
            (id, u) = ircdb.users.newUser()
            u.name = name
            u.setPassword(password)
            u.addCapability('owner')
            ircdb.users.setUser(id, u)

    output("""Of course, when you're in an IRC channel you can address the bot
    by its nick and it will respond, if you give it a valid command (it may or
    may not respond, depending on what your config variable replyWhenNotCommand
    is set to).  But your bot can also respond to a short "prefix character,"
    so instead of saying "bot: do this," you can say, "@do this" and achieve
    the same effect.  Of course, you don't *have* to have a prefix char, but
    if the bot ends up participating significantly in your channel, it'll ease
    things.""")
    if yn('Would you like to set the prefix char(s) for your bot?  ',
          default=True):
        output("""Enter any characters you want here, but be careful: they
        should be rare enough that people don't accidentally address the bot
        (simply because they'll probably be annoyed if they do address the bot
        on accident).  You can even have more than one.  I (jemfinch) am quite
        partial to @, but that's because I've been using it since my ocamlbot
        days.""")
        import callbacks
        c = ''
        while not c:
            try:
                c = anything('What would you like your bot\'s prefix '
                             'character(s) to be?')
                conf.supybot.prefixChars.set(c)
            except registry.InvalidRegistryValue, e:
                output(str(e))
                c = ''
    else:
        conf.supybot.prefixChars.set('')

    ###
    # logging variables.
    ###

    # conf.supybot.log.stdout
    output("""By default, your bot will log not only to files in the logs
    directory you gave it, but also to stdout.  We find this useful for
    debugging, and also just for the pretty output (it's colored!)""")
    stdout = not yn('Would you like to turn off this logging to stdout?')
    conf.supybot.log.stdout.setValue(stdout)
    if conf.supybot.log.stdout():
        # conf.something
        output("""Some terminals may not be able to display the pretty colors
        logged to stderr.  By default, though, we turn the colors off for
        Windows machines and leave it on for *nix machines.""")
        if os.name is not 'nt':
            conf.supybot.log.stdout.colorized.setValue(
                not yn('Would you like to turn this colorization off?',
                default=False))

    # conf.supybot.log.level
    output("""Your bot can handle debug messages at several priorities,
    CRITICAL, ERROR, WARNING, INFO, and DEBUG, in decreasing order of priority.
    By default, your bot will log all of these priorities except DEBUG.  You
    can, however, specify that it only log messages above a certain priority
    level.""")
    priority = str(conf.supybot.log.level)
    logLevel = something('What would you like the minimum priority to be?  '
                         'Just press enter to accept the default.',
                         default=priority).lower()
    while logLevel not in ['debug', 'info', 'warning', 'error', 'critical']:
        output("""That's not a valid priority.  Valid priorities include
        'DEBUG', 'INFO', 'WARNING', 'ERROR', and 'CRITICAL'""")
        logLevel = something('What would you like the minimum priority to '
                             'be?  Just press enter to accept the default.',
                             default=priority).lower()
    conf.supybot.log.level.set(logLevel)

    if advanced:
        output("""Here's some stuff you only get to choose if you're an
        advanced user :)""")

        # enablePipeSyntax
        output("""Supybot allows nested commands.  You've probably read about
        them in our website or documentation.  By default, they work with a
        syntax that looks something like Lisp with square brackets.  I.e., to
        call the command foo on the output of bar, you would use "foo [bar]".
        Supybot is also capable of providing a pipe syntax similar to *nix
        pipes.  In addition to "foo [bar]", you could achieve the same effect
        with "bar | foo", which some people find more natural.  This syntax
        is disabled by default because so many people have pipes in their
        nicks, and we've found it to be somewhat frustrating to have to quote
        such nicks in commands.""")
        response = yn('Would you like to enable this pipe syntax?', default=0)

        # conf.supybot.reply.withNickPrefix
        output("""By defualt, the bot will respond to all commands with a
        Nick: <response> response.  That is, the user making the command will
        have their nick prefixed to the command.
        If supybot.reply.withNickPrefix is set to False, replies from the bot
        will not include this nick prefix.""")
        conf.supybot.reply.withNickPrefix.setValue(
            not yn('Would you like to turn off this nick prefix?',
            default=False))

        # conf.supybot.reply.whenAddressedByNick
        output("""By default, the bot will respond when addressed by its nick.
        That is, if the bot's nick is 'botnick', then 'botnick: foo' will call
        the foo command.  If replyWhenAddressedByNick is False, the bot will
        not respond to such messages.  Make sure you have a prefixChar set if
        you set this, otherwise people will only be able to communicate with
        the bot through private messages.""")
        conf.supybot.reply.whenAddressedByNick.setValue(
            not yn('Would you like to turn off the bot\'s replies to messages '
                   'prefixed with its nick?', default=False))

        # conf.supybot.showSimpleSyntax
        output("""By default, when the bot receives a message with invalid
        arguments, the bot returns the full help (syntax and description) of
        the command.  If showOnlySyntax is set to True, though, the bot will
        return just the syntax of the command.  Of course, the help will still
        be available via the help command.""")
        conf.supybot.showSimpleSyntax.setValue(
            yn('Would you like to show only the syntax of commands when '
              'they\'re given invalid arguments?', default=False))

        # conf.supybot.reply.whenNotCommand
        output("""By default, when people address your bot but don't give it
        a valid command, it'll respond with a message saying that they didn't
        give it a valid command.  When your channel grows more accustomed to
        the bot, they may prefer that it not do that, since any command you
        give the bot (at least within the included plugins) will respond with
        something, so invalid commands are still noticeable.  This decreases
        the channel traffic somewhat.""")
        conf.supybot.reply.whenNotCommand.setValue(
            not yn('Would you like to turn off the bot\'s replies when he\'s '
              'addressed but given a non-command?', default=False))

        # conf.supybot.reply.withPrivateNotice
        output("""When a user sends a command to the bot from within a
        channel, the bot, by default, also responds to that channel. In some
        rather busy channels this might be considered spam, especially if the
        command returns several lines in its result. In this case you may want
        to notice the user instead.""")
        conf.supybot.reply.withPrivateNotice.setValue(
            yn('Would you like the bot to notice replies to users in private '
              'when a command is executed in a channel?', default=False))

        # conf.supybot.throttleTime
        output("""In order to prevent flooding itself off the network,
        your bot by default will not send more than one message per second to
        the network.  This is, however, configurable.""")
        if yn('Would you like to change the minimum amount of time between '
              'messages your bot sends to the network?', default=False):
            while True:
                try:
                    conf.supybot.throttleTime.set(something(
                        'How long do you want your bot to wait between '
                        'sending messages to the server?  Floating '
                        'point values are accepted.'))
                    break
                except InvalidRegistryValue:
                    output("""That's not a valid time.  You'll need to give
                    a floating-point number.""")
        
    ###
    # This is close to the end.
    ###
    if not advanced:
        output("""There are a lot of options we didn't ask you about simply
        because we'd rather you get up and running and have time left to play
        around with your bot.  But come back and see us!  When you've played
        around with your bot enough to know what you like, what you don't like,
        what you'd like to change, then come back and run this script again
        and tell us you're an advanced user.  Some of those questions might be
        boring, but they'll really help you customize your bot :)""")
    
    ###
    # Write the registry
    ###

    # Save the registry
    if not filename:
        filename = '%s.conf' % nick
    registry.close(conf.supybot, filename)
    
    # Done!
    output("""All done!  Your new bot configuration is %s.  If you're running 
    a *nix based OS, you can probably start your bot with the command line
    "supybot %s".  If you're not running a *nix or similar machine, you'll
    just have to start it like you start all your other Python scripts.""" % \
                                                         (filename, filename))

if __name__ == '__main__':
    try:
        main()
    except KeyboardInterrupt:
        # We may still be using bold text when exiting during a prompt
        if questions.useBold:
            import ansi
            print ansi.RESET
        print
        print
        output("""Well, it looks like you cancelled out of the wizard before
        it was done.  Unfortunately, I didn't get to write anything to file.
        Please run the wizard again to completion.""")