import re
from mode import Fundamental
from method import WrapParagraph
from mode.text import ContinuedRule, WordRule, TextInsertSpace
from lex import Grammar, PatternRule

class MuttGrammar(Grammar):
    rules = [
        PatternRule('mutt_header', '^(?:From|To|Cc|Bcc|Subject|Reply-To|In-Reply-To|Delivered-To|Date):'),
        PatternRule('quotec', '^ *(?:(?: *>){3})*(?: *>){3}.*$'),
        PatternRule('quoteb', '^ *(?:(?: *>){3})*(?: *>){2}.*$'),
        PatternRule('quotea', '^ *(?:(?: *>){3})*(?: *>){1}.*$'),
        PatternRule('email', r'(?:^|(?<=[ :]))<?[^<>@\n ]+@(?:[^<>@\.\n ]+\.)*[^<>@\.\n ]+>?'),
        PatternRule('url', r'(?:^|(?<= ))(?:http|https|ftp|sftp|file|smtp|smtps|torrent|news|jabber|irc|telnet)://(?:[^\.\n ]+\.)*[^\.\n ]+'),
        ContinuedRule(),
        WordRule(),
        PatternRule('punct', '[^a-zA-Z0-9_]'),
        PatternRule('stuff', '[a-zA-Z0-9_]+'),
    ]

class MuttWrapParagraph(WrapParagraph):
    limit    = 72
    empty_re = re.compile('^(?: *>.*| *)$')
class MuttInsertSpace(TextInsertSpace):
    wrapper = MuttWrapParagraph

class Mutt(Fundamental):
    name    = 'Mutt'
    grammar = MuttGrammar()
    colors  = {
        'mutt_header': ('green', 'default', 'bold'),
        'email':       ('cyan', 'default', 'bold'),
        'url':         ('cyan', 'default', 'bold'),
        'quotea':      ('yellow', 'default', 'bold'),
        'quoteb':      ('cyan', 'default', 'bold'),
        'quotec':      ('magenta', 'default', 'bold'),
        'misspelled':  ('red', 'default', 'bold'),
        'cont.start':  ('default', 'default', 'bold'),
        'cont.end':    ('default', 'default', 'bold'),
        'word':        ('default', 'default', 'bold'),
        'punct':       ('default', 'default', 'bold'),
        'stuff':       ('default', 'default', 'bold'),
    }
    actions = [MuttInsertSpace, MuttWrapParagraph]
    config = {
        'mutt.margin': 72,
    }
    _bindings = {
        'learn-word':          ('C-c l',),
        'mutt-wrap-paragraph': ('M-q',),
        'mutt-insert-space':   ('SPACE',),
    }

install = Mutt.install