from flask import Flask, jsonify, send_file
import datetime
import os
import time
from garminconnect import Garmin

app = Flask(__name__)

# --- CONFIG ---
EMAIL = os.getenv("GARMIN_EMAIL")
PASSWORD = os.getenv("GARMIN_PASSWORD")
START_DATE = datetime.date.fromisoformat(os.getenv("START_DATE", "2026-01-01"))
GOAL_KM = float(os.getenv("GOAL_KM", "80"))
ALLOWED_TYPES = os.getenv("ALLOWED_TYPES", "running,treadmill_running").split(",")

CACHE_TTL = int(os.getenv("CACHE_TTL", "300"))  # seconds (default 5 mins)

# --- GLOBAL CACHE ---
garmin_client = None
last_login_time = 0

cached_data = None
last_fetch_time = 0


def get_client():
    global garmin_client, last_login_time

    # Reuse client if already logged in
    if garmin_client:
        return garmin_client

    # Otherwise login once
    garmin_client = Garmin(EMAIL, PASSWORD)
    garmin_client.login()
    last_login_time = time.time()

    print("✅ Logged into Garmin")

    return garmin_client


def get_garmin_data():
    global cached_data, last_fetch_time

    now = time.time()

    # --- RETURN CACHED DATA ---
    if cached_data and (now - last_fetch_time < CACHE_TTL):
        print("⚡ Returning cached data")
        return cached_data

    try:
        client = get_client()

        today = datetime.date.today()
        activities = client.get_activities_by_date(
            START_DATE.isoformat(), today.isoformat()
        )

        total_meters = 0
        for act in activities:
            activity_type = act.get("activityType", {}).get("typeKey", "").lower()
            if activity_type in ALLOWED_TYPES:
                total_meters += act.get("distance", 0)

        total_km = total_meters / 1000.0

        result = {
            "total_km": round(total_km, 2),
            "goal_km": GOAL_KM,
            "percent": round((total_km / GOAL_KM) * 100, 1),
            "status": "success",
        }

        # --- UPDATE CACHE ---
        cached_data = result
        last_fetch_time = now

        print("🔄 Fetched fresh data")

        return result

    except Exception as e:
        # If Garmin session expired → reset client and retry once
        print(f"⚠️ Error: {e}, retrying login...")

        try:
            reset_client()

            client = get_client()

            today = datetime.date.today()
            activities = client.get_activities_by_date(
                START_DATE.isoformat(), today.isoformat()
            )

            total_meters = sum(
                act.get("distance", 0)
                for act in activities
                if act.get("activityType", {}).get("typeKey", "").lower() in ALLOWED_TYPES
            )

            total_km = total_meters / 1000.0

            result = {
                "total_km": round(total_km, 2),
                "goal_km": GOAL_KM,
                "percent": round((total_km / GOAL_KM) * 100, 1),
                "status": "success",
            }

            cached_data = result
            last_fetch_time = now

            return result

        except Exception as e2:
            return {"status": "error", "message": str(e2)}


def reset_client():
    global garmin_client
    garmin_client = None
    print("♻️ Garmin client reset")


@app.route('/progress')
def progress():
    return jsonify(get_garmin_data())


@app.route('/image')
def get_image():
    return send_file("logo.bin", mimetype='application/octet-stream')


if __name__ == '__main__':
    app.run(host='0.0.0.0', port=5000)