import logging
import datetime
from .session.org_mode import (
    global_session as session,
    create_global_session,
)
from .knowledge_base import KnowledgeBase
from .visualization import (
    show_knowledge,
    show_samples,
)
from .tests import gac_100
from .modifiable_property import (
    ModifiableProperty,
    ModifiablePropertyWithAst,
    is_modifiable_property,
)


bye_phrases = ['bye', 'exit']


def gen_session_name():
    now = datetime.datetime.utcnow()
    return "treeNLU-cli-session-{}.org".format(
        now.strftime("%y_%m_%d %H:%M:%S_%f"))


def main():
    create_global_session(gen_session_name())
    logging.getLogger().setLevel(logging.INFO)
    knowledge = gac_100.main()
    logging.getLogger().setLevel(logging.DEBUG)
    while True:
        try:
            data = input("> ").strip()
        except EOFError:
            print("bye")
            break
        if data.lower() in bye_phrases:
            break
        if not data:
            continue

        if data == '/show':
            show_knowledge(knowledge)
            continue
        elif data == '/samples':
            show_samples(knowledge)
            continue

        with session().log(data):
            ret = knowledge.process(data)
            if ret:
                result, _, _ = ret
                if not is_modifiable_property(result):
                    print("<", result)
                else:
                    result.setter()
                    print("OK")
            elif ret is None:
                print("- Couldn't understand that, oops... -")
            else:
                print("Unhandled response:", ret)
    print("< Bye!")