import ui
import windows
import chaninfo
from conf import conf

def set_target(e):
    target_l = e.target.lstrip('@+%.(<')
    e._target_fr = e.target_fr + len(e.target) - len(target_l)
    
    target_r = e.target.rstrip('>:,')
    e._target_to = e.target_to - len(e.target) + len(target_r)
    
    if target_r.endswith(')'):
        e._target = e.text[e._target_fr:e._target_to]
        open_parens = e._target.count('(') - e._target.count(')')
        while open_parens < 0 and e.text[e._target_to-1] == ')':
            e._target_to -= 1
            open_parens += 1
    
    e._target = e.text[e._target_fr:e._target_to]

def is_nick(e):
    return isinstance(e.window, windows.ChannelWindow) and \
            chaninfo.ison(e.window.network, e.window.id, e._target)
    
def is_url(e):
    def starts(prefix, mindots=1):
        def prefix_url(target):
            return target.startswith(prefix) and target.count('.') >= mindots
            
        return prefix_url
    
    to_check = [starts(*x) for x in [
        ('http://', 1),
        ('https://', 1),
        ('ftp://', 1),
        ('www', 2),
        ]]

    for check_url in to_check:
        if check_url(e._target):
            return True
    
    return False
    
def is_chan(e):
    # click on a #channel
    return e.window.network and e._target and \
            e._target[0] in e.window.network.isupport.get('CHANTYPES', '&#$+')

def get_autojoin_list(network):
    perform = conf.get('networks',{}).get(network.name,{}).get('perform',())
    channels = set()
    for line in perform:
        if line.startswith('join ') and ' ' not in line[5:]:
            channels.update(line[5:].split(','))
    return channels

def add_autojoin(network, channel):
    if 'networks' not in conf:
        conf['networks'] = {}
    if network.name not in conf['networks']:
        conf['networks'][network.name] = {'server': network.server}
        conf['start_networks'] = conf.get('start_networks',[]) + [network.name]
    if 'perform' in conf['networks'][network.name]:
        perform = conf['networks'][network.name]['perform']
    else:
        perform = conf['networks'][network.name]['perform'] = []
    
    for n, line in enumerate(perform):
        if line.startswith('join ') and ' ' not in line[5:]:
            perform[n] = "%s,%s" % (line, channel)
            break
    else:
        perform.append('join %s' % channel)

def make_nick_menu(e, target):
    def query():
        core.events.run('query %s' % target, e.window, e.window.network)
    
    def whois():
        core.events.run('whois %s' % target, e.window, e.window.network)
    
    e.menu += [
        ('Query', query),
        ('Whois', whois),
        (),
        ]

def onHover(e):
    set_target(e)

    for is_check in (is_nick, is_url, is_chan):
        if is_check(e):
            e.tolink.add((e._target_fr, e._target_to))
            break

def onClick(e):
    set_target(e)

    if is_nick(e):
        core.events.run('query %s' % e._target, e.window, e.window.network)
    
    # url of the form http://xxx.xxx or www.xxx.xxx       
    elif is_url(e):
        if e._target.startswith('www'):
            e._target = 'http://%s' % e._target
        ui.open_file(e._target)
    
    # click on a #channel
    elif is_chan(e):
        if not chaninfo.ischan(e.window.network, e._target):
            e.window.network.join(e._target)
        window = windows.get(windows.ChannelWindow, e.window.network, e._target)
        if window:
            window.activate()

def onRightClick(e):
    set_target(e)

    # nick on this channel
    if is_nick(e):
        make_nick_menu(e, e._target)

    elif is_url(e):
        if e._target.startswith('www'):
            e._target = 'http://%s' % e._target
    
        def copy_to():
            # copy to clipboard
            ui.set_clipboard(e._target)
            
        e.menu += [('Copy', copy_to)]
        
    elif is_chan(e):
        e.channel = e._target
        e.network = e.window.network
        core.events.trigger('ChannelMenu', e) 

def onListRightClick(e):
    if isinstance(e.window, windows.ChannelWindow):
        make_nick_menu(e, e.nick)

def onListDoubleClick(e):
    if isinstance(e.window, windows.ChannelWindow):
        core.events.run("query %s" % e.target, e.window, e.window.network)