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

rules = [
    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('punctuation', '[^a-zA-Z0-9_]'),
    PatternRule('data', '[a-zA-Z0-9_]+'),
]

class HeaderGrammar(Grammar): rules = [PatternRule('header', '^.+:')] + rules
class BodyGrammar(Grammar): rules = rules
class MuttGrammar(Grammar): 
    rules = [RegionRule('mutt', '^', HeaderGrammar, '^\n$', BodyGrammar, '')]

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'),
        'mutt.email':       ('cyan', 'default', 'bold'),
        'mutt.url':         ('cyan', 'default', 'bold'),
        'mutt.quotea':      ('yellow', 'default', 'bold'),
        'mutt.quoteb':      ('cyan', 'default', 'bold'),
        'mutt.quotec':      ('magenta', 'default', 'bold'),
        'mutt.misspelled':  ('red', 'default', 'bold'),
        'mutt.cont.start':  ('default', 'default'),
        'mutt.cont.end':    ('default', 'default'),
        'mutt.word':        ('default', 'default'),
        'mutt.punctuation': ('default', 'default'),
        'mutt.data':        ('default', 'default'),
    }
    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