app.py

from flask import Flask, render_template, request, redirect, url_for, session, jsonify
from pymongo import MongoClient
from bson.objectid import ObjectId  
from werkzeug.security import generate_password_hash, check_password_hash
import requests  

app = Flask(__name__)

#API settings
API_URL = 'https://api.calorieninjas.com/v1/nutrition?query='
API_KEY = 'Mg32i8it134/WHBsJ/BNMw==VzPRDn8ISb0n1GPZ'

app.secret_key = 'pusheen'

# db conncetion 
client = MongoClient('mongodb+srv://Anjahebi:4fLrJVtnEIZPVzRv@pusheenswe.dblujvp.mongodb.net/?retryWrites=true&w=majority')

#mongodb+srv://Anjahebi:4fLrJVtnEIZPVzRv@pusheenswe.dblujvp.mongodb.net/?retryWrites=true&w=majority

try:
    client.admin.command('ping')
    print("Pinged your deployment. You successfully connected to MongoDB!")
except Exception as e:
    print(e)

db = client['HealthApp']


users = db["UserData"]
intake = db["DailyIntake"]


user_id = None

@app.route('/')
def index():
    return render_template('index.html')

@app.route('/signout', methods=['POST'])
def signout():
    session.clear()  # Clears the session, effectively signing the user out
    return redirect(url_for('index'))


@app.route('/signup', methods=['GET', 'POST'])
def signup():
    if request.method == 'POST':
        # Hashing the password
        hashed_password = generate_password_hash(request.form.get('password'))

        user_info = {
            "username": request.form.get('username'),
            "password": hashed_password,
            "gender": request.form.get('gender'),
            "dob": request.form.get('dob'),
            "height": request.form.get('height'),
            "current_weight": request.form.get('current_weight')
        }
        db.users.insert_one(user_info)
        return redirect(url_for('index'))
    return render_template('signup.html')

@app.route('/signin', methods=['GET', 'POST'])
def signin():
    if request.method == 'POST':
        username = request.form.get('username')
        password = request.form.get('password')
        
        # finding user by user name 
        user = db.users.find_one({"username": username})
        

        if user and check_password_hash(user['password'], password):
            session['user_id'] = str(user['_id'])  # Store user_id in session
            return redirect(url_for('nutrition_tracker'))  # Redirect to Nutrition Diary

        else:
            # Authentication failed
            return "Invalid credentials", 401

    return render_template('signin.html')

@app.route('/nutrition_tracker', methods=['GET', 'POST'])
def nutrition_tracker():
    if 'user_id' not in session:
        return redirect(url_for('signin'))  # Redirect to sign-in if not logged in

    if request.method == 'POST':
        entry = {
            "user_id": session['user_id'],
            "food_item": request.form.get("food-item"),
            "calories": request.form.get("calories"),
            "date": request.form.get("date")
        }
        db.nutrition.insert_one(entry)

    entries = db.nutrition.find({"user_id": session['user_id']}).sort("date", -1)
    return render_template('nutrition_tracker.html', entries=entries)

@app.route('/nutrition_diary', methods=['GET', 'POST'])
def nutrition_diary():

    # Initialize an empty list for entries
    entries = []

    if request.method == 'POST':
        # Get the food item from the form
        food_item = request.form.get("food-item")
        
        # Make the API call
        response = requests.get(
            f"{API_URL}?query={food_item}",
            headers={'X-Api-Key': API_KEY}
        )
        
        if response.status_code == 200:
            data = response.json()
            # Assuming the first item in the response is what we want
            if data['items']:
                item_data = data['items'][0]
                calories = item_data['calories']
                
                # Create an entry to insert into the database
                entry = {
                    "user_id": session['user_id'],
                    "food_item": food_item,
                    "calories": calories,
                    "date": request.form.get("date")
                    # Add more fields from item_data if necessary
                }
                db.nutrition.insert_one(entry)
            else:
                pass
        else:
            # Handle error from API
            print(f"Error: {response.status_code}, {response.text}")
    # historical data from MongoDB
    entries = db.nutrition.find().sort("date", -1)  # Sort by date descending
    return render_template('nutrition_diary.html', entries=entries)

    if 'user_id' not in session:
        return redirect(url_for('signin'))  # Redirect to sign-in if not logged in


@app.route('/get-nutrition', methods=['POST'])
def get_nutrition():
    data = request.get_json()
    food_item = data['food_item']
    
    # Make the API call
    response = requests.get(
        'https://api.calorieninjas.com/v1/nutrition',
        headers={'X-Api-Key': API_KEY},
        params={'query': food_item}
    )
    
    if response.status_code == 200:
        # Pass the API response as JSON back to the front-end
        return jsonify(response.json())
    else:
        # Handle any error that occurred during the API call
        return jsonify({'error': 'Could not retrieve nutrition data'}), response.status_code

@app.route('/progress', methods=['GET', 'POST'])
def progress():
    if 'user_id' not in session:
        return redirect(url_for('signin'))

    if request.method == 'POST':
        weight = request.form.get("weight")
        date = request.form.get("date")
        weight_entry = {"date": date, "weight": weight}
        
        # Update the user's document with the new weight entry
        users.update_one({"_id": ObjectId(session['user_id'])}, {"$push": {"weight_logs": weight_entry}})

    user = users.find_one({"_id": ObjectId(session['user_id'])})

    # Check if the user is found
    if user:
        weight_logs = user.get("weight_logs", [])
    else:
        weight_logs = []

    return render_template('progress.html', weight_logs=weight_logs)


if __name__ == '__main__':
    #app.run(debug=True)
    app.run(host='0.0.0.0', debug=True)