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timetravel.py
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timetravel.py
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from typing import Optional, Match
import re
import random
from queries import Query
from reynir import NounPhrase
_TIMETRAVEL_QTYPE = "Timetravel"
_STARTOVER_QTYPE = "Startover"
def help_text(lemma: str) -> str:
"""Help text to return when query.py is unable to parse a query but
one of the above lemmas is found in it"""
return "Ég get svarað ef þú spyrð til dæmis: {0}?".format(
random.choice(
(
"Spilaðu Gísla Martein í kvöld",
"Gætirðu spilað Kiljuna frá í gær",
"Spilaðu Tíufréttir frá því í fyrradag",
)
)
)
_STARTOVER_RE = (
r"^byrja(ðu)?( þáttinn| myndina)?( aftur)? upp á nýtt$",
r"^byrja(ðu)?( þáttinn| myndina)?(( aftur)? frá)? byrjun(inni)?$",
)
# Ways of saying 'from ...'
_SINCE_RE = r"(frá( (því|það))?|síðan)"
# Ways of saying 'today'
_TODAY_RE = rf"(?P<today>{_SINCE_RE}? í (dag|kvöld|morgun))"
# Ways of saying 'yesterday'
_YESTERDAY_RE = rf"(?P<yesterday>{_SINCE_RE}? í gær(kvöldi?|morgun)?)"
# Ways of saying 'day before yesterday'
_DAYBEFOREYESTERDAY_RE = rf"(?P<daybeforeyesterday>{_SINCE_RE}? í fyrradag)"
# Ways of specifying date
_WHEN_RE = r"( ?({}) ?)".format(
"|".join(
(
_TODAY_RE,
_YESTERDAY_RE,
_DAYBEFOREYESTERDAY_RE,
)
)
)
# Common courtesies
_CAN_YOU_RE = r"( ?({}) ?)".format(
"|".join(
(
r"geturðu",
r"getur þú",
r"gætirðu",
r"værirðu til í að",
)
)
)
# Ways of saying 'play'
_PLAY_RE = r"( ?({}) ?)".format(
"|".join(
(
r"spilaðu?",
r"spilaði",
r"spilar(ðu)?",
r"spila",
r"spilað? fyrir mig",
)
)
)
_TIMETRAVEL_RE = rf"^{_CAN_YOU_RE}?{_PLAY_RE}(?P<program>.+?){_WHEN_RE}?$"
# Manual fixes to program names (keyed by their indefinite form)
_PROGRAM_NAME_FIXES = {
"sjöfréttir": ("Fréttir kl. 19:00", "Fréttir kl. 19:00"),
}
def handle_plain_text(q: Query) -> bool:
"""Handles a plain text query."""
ql: str = q.query_lower
if any(re.search(r, ql) for r in _STARTOVER_RE):
q.set_qtype(_STARTOVER_QTYPE)
q.set_answer({"answer": "startover"}, "startover")
return True
m: Optional[Match[str]] = re.search(_TIMETRAVEL_RE, ql)
if m:
gd = m.groupdict()
program_raw: str = gd["program"]
when: Optional[str] = (
"daybeforeyesterday" if gd.get("daybeforeyesterday") else None
)
if not when:
when = "yesterday" if gd.get("yesterday") else None
if not when:
when = "today"
program_indef: str = NounPhrase(program_raw).indefinite or program_raw
if program_indef.lower() in _PROGRAM_NAME_FIXES:
program_raw, program_indef = _PROGRAM_NAME_FIXES[program_indef.lower()]
q.set_qtype(_TIMETRAVEL_QTYPE)
q.set_answer({"answer": "timetravel"}, [when, program_raw, program_indef])
return True
return False