schedular.py

import spacy
from dateparser.search import search_dates
from spacy.matcher import Matcher

nlp = spacy.load("en_core_web_sm")

def extract_event_info(paragraph):
    doc = nlp(paragraph)
    
    matcher = Matcher(nlp.vocab)
    reschedule_patterns = [
        [{"LOWER": {"IN": ["rescheduled", "moved", "postponed", "changed", "pushed"]}}],
        [{"LOWER": "from"}, {"IS_DIGIT": True, "OP": "?"}, {"LIKE_NUM": True}, {"LOWER": "to"}, {"IS_DIGIT": True, "OP": "?"}, {"LIKE_NUM": True}],
        [{"LOWER": "to"}, {"IS_DIGIT": True, "OP": "?"}, {"LIKE_NUM": True}]
    ]

    matcher.add("RESCHEDULE", reschedule_patterns)
    matches = matcher(doc)

    tasks = [chunk.text for chunk in doc.noun_chunks if "event" in chunk.text.lower() or "meeting" in chunk.text.lower()]

    date_time_info = search_dates(paragraph)

    is_rescheduled = False
    new_date = None

    for match_id, start, end in matches:
        span = doc[start:end]
        if span.text.lower().split()[0] in ["rescheduled", "moved", "postponed", "changed", "pushed"]:
            is_rescheduled = True
        elif "from" in span.text.lower() and "to" in span.text.lower():
            from_index = span.text.lower().split().index("from")
            to_index = span.text.lower().split().index("to")
            if to_index > from_index + 1:
                new_date = date_time_info[-1][1] if date_time_info else None
        elif "to" in span.text.lower():
            new_date = date_time_info[-1][1] if date_time_info else None  

    if is_rescheduled and new_date is None and date_time_info:
        new_date = date_time_info[-1][1]

    return {
        "tasks": tasks,
        "date_time": new_date
    }

# Example usage with a single paragraph
# paragraph = """I hope this email finds you well. I am writing to request a meeting to discuss the current status of our ongoing project, “Client Project XYZ”. As the User Experience Director at ABC Company, Inc., I have been leading the UX design efforts and would like to provide an update on our progress.

# The meeting would be rescheduled from 25th of March to 27th of March and would last approximately 30 minutes. I will be sharing a presentation outlining the key findings and recommendations for the project’s next phase.

# If this time does not work for you, please let me know and I will work with you to find an alternative. I look forward to discussing the project with you and exploring ways to move forward."""
# paragraph=""""The meeting is rescheduled on 30th of march is cancelled now."""
# event_info = extract_event_info(paragraph)
# print(f"Extracted Info: {event_info}")