import uuid
from flask import Flask, render_template, request, session
from db import init_db, save_history, get_user_history, enforce_history_limit
from utils import summarize_text, extract_tags, detect_sentiment

app = Flask(__name__)
app.secret_key = "dev-secret" # creates an ID for session cookies
init_db()

@app.before_request
def assign_user_id():
    if "user_id" not in session:
        session["user_id"] = str(uuid.uuid4())

@app.route("/", methods=["GET", "POST"])
def index():
    summary = tags = sentiment = None
    if request.method == "POST":
        text = request.form["text"].strip()
        if not text:
            return render_template("index.html", error="Please enter some text.")

        user_id = session["user_id"]
        enforce_history_limit(user_id)

        summary = summarize_text(text)
        tags = extract_tags(text)
        sentiment = detect_sentiment(text)

        save_history(user_id, text, summary, tags, sentiment)
    
    print(session)
    return render_template("index.html", summary=summary, tags=tags, sentiment=sentiment)

@app.route("/history")
def history():
    user_id = session.get("user_id")
    notes = get_user_history(user_id)
    return render_template("history.html", notes=notes)

if __name__ == "__main__":
    app.run(host="0.0.0.0", port=7860, debug=False)