main.py

from flask import Flask, request, render_template, redirect, session, jsonify  # Import jsonify
from flask_sqlalchemy import SQLAlchemy
import numpy as np
import pandas as pd
import pickle
import bcrypt

# flask app
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI']='sqlite:///database.db'
db = SQLAlchemy(app)
app.secret_key ='secret_key'

class User(db.Model):
    id = db.Column(db.Integer,primary_key= True)
    name = db.Column(db.String(100),nullable=False)
    email = db.Column(db.String(100),unique=True)
    password = db.Column(db.String(100))

    def __init__(self,name,email,password):
        self.name = name
        self.email=email
        self.password=bcrypt.hashpw(password.encode('utf-8'),bcrypt.gensalt()).decode('utf-8')

    def check_password(self,password):
        return bcrypt.checkpw(password.encode('utf-8'),self.password.encode('utf-8'))

with app.app_context():
    db.create_all()

# load databasedataset===================================
sym_des = pd.read_csv("datasets/symtoms_df.csv")
precautions = pd.read_csv("datasets/precautions_df.csv")
workout = pd.read_csv("datasets/workout_df.csv")
description = pd.read_csv("datasets/description.csv")
medications = pd.read_csv('datasets/medications.csv')
diets = pd.read_csv("datasets/diets.csv")


# load model===========================================
svc = pickle.load(open('models/svc.pkl','rb'))


#============================================================
# custome and helping functions
#==========================helper funtions================
def helper(dis):
    desc = description[description['Disease'] == dis]['Description']
    desc = " ".join([w for w in desc])

    pre = precautions[precautions['Disease'] == dis][['Precaution_1', 'Precaution_2', 'Precaution_3', 'Precaution_4']]
    pre = [col for col in pre.values]

    med = medications[medications['Disease'] == dis]['Medication']
    med = [med for med in med.values]

    die = diets[diets['Disease'] == dis]['Diet']
    die = [die for die in die.values]

    


    return desc,pre,med,die

symptoms_dict = {'itching': 0, 'skin_rash': 1, 'nodal_skin_eruptions': 2, 'continuous_sneezing': 3, 'shivering': 4, 'chills': 5, 'joint_pain': 6, 'stomach_pain': 7, 'acidity': 8, 'ulcers_on_tongue': 9, 'muscle_wasting': 10, 'vomiting': 11, 'burning_micturition': 12, 'spotting_ urination': 13, 'fatigue': 14, 'weight_gain': 15, 'anxiety': 16, 'cold_hands_and_feets': 17, 'mood_swings': 18, 'weight_loss': 19, 'restlessness': 20, 'lethargy': 21, 'patches_in_throat': 22, 'irregular_sugar_level': 23, 'cough': 24, 'high_fever': 25, 'sunken_eyes': 26, 'breathlessness': 27, 'sweating': 28, 'dehydration': 29, 'indigestion': 30, 'headache': 31, 'yellowish_skin': 32, 'dark_urine': 33, 'nausea': 34, 'loss_of_appetite': 35, 'pain_behind_the_eyes': 36, 'back_pain': 37, 'constipation': 38, 'abdominal_pain': 39, 'diarrhoea': 40, 'mild_fever': 41, 'yellow_urine': 42, 'yellowing_of_eyes': 43, 'acute_liver_failure': 44, 'fluid_overload': 45, 'swelling_of_stomach': 46, 'swelled_lymph_nodes': 47, 'malaise': 48, 'blurred_and_distorted_vision': 49, 'phlegm': 50, 'throat_irritation': 51, 'redness_of_eyes': 52, 'sinus_pressure': 53, 'runny_nose': 54, 'congestion': 55, 'chest_pain': 56, 'weakness_in_limbs': 57, 'fast_heart_rate': 58, 'pain_during_bowel_movements': 59, 'pain_in_anal_region': 60, 'bloody_stool': 61, 'irritation_in_anus': 62, 'neck_pain': 63, 'dizziness': 64, 'cramps': 65, 'bruising': 66, 'obesity': 67, 'swollen_legs': 68, 'swollen_blood_vessels': 69, 'puffy_face_and_eyes': 70, 'enlarged_thyroid': 71, 'brittle_nails': 72, 'swollen_extremeties': 73, 'excessive_hunger': 74, 'extra_marital_contacts': 75, 'drying_and_tingling_lips': 76, 'slurred_speech': 77, 'knee_pain': 78, 'hip_joint_pain': 79, 'muscle_weakness': 80, 'stiff_neck': 81, 'swelling_joints': 82, 'movement_stiffness': 83, 'spinning_movements': 84, 'loss_of_balance': 85, 'unsteadiness': 86, 'weakness_of_one_body_side': 87, 'loss_of_smell': 88, 'bladder_discomfort': 89, 'foul_smell_of urine': 90, 'continuous_feel_of_urine': 91, 'passage_of_gases': 92, 'internal_itching': 93, 'toxic_look_(typhos)': 94, 'depression': 95, 'irritability': 96, 'muscle_pain': 97, 'altered_sensorium': 98, 'red_spots_over_body': 99, 'belly_pain': 100, 'abnormal_menstruation': 101, 'dischromic _patches': 102, 'watering_from_eyes': 103, 'increased_appetite': 104, 'polyuria': 105, 'family_history': 106, 'mucoid_sputum': 107, 'rusty_sputum': 108, 'lack_of_concentration': 109, 'visual_disturbances': 110, 'receiving_blood_transfusion': 111, 'receiving_unsterile_injections': 112, 'coma': 113, 'stomach_bleeding': 114, 'distention_of_abdomen': 115, 'history_of_alcohol_consumption': 116, 'fluid_overload.1': 117, 'blood_in_sputum': 118, 'prominent_veins_on_calf': 119, 'palpitations': 120, 'painful_walking': 121, 'pus_filled_pimples': 122, 'blackheads': 123, 'scurring': 124, 'skin_peeling': 125, 'silver_like_dusting': 126, 'small_dents_in_nails': 127, 'inflammatory_nails': 128, 'blister': 129, 'red_sore_around_nose': 130, 'yellow_crust_ooze': 131}
diseases_list = {15: 'Fungal infection', 4: 'Allergy', 16: 'GERD', 9: 'Chronic cholestasis', 14: 'Drug Reaction', 33: 'Peptic ulcer diseae', 1: 'AIDS', 12: 'Diabetes ', 17: 'Gastroenteritis', 6: 'Bronchial Asthma', 23: 'Hypertension ', 30: 'Migraine', 7: 'Cervical spondylosis', 32: 'Paralysis (brain hemorrhage)', 28: 'Jaundice', 29: 'Malaria', 8: 'Chicken pox', 11: 'Dengue', 37: 'Typhoid', 40: 'hepatitis A', 19: 'Hepatitis B', 20: 'Hepatitis C', 21: 'Hepatitis D', 22: 'Hepatitis E', 3: 'Alcoholic hepatitis', 36: 'Tuberculosis', 10: 'Common Cold', 34: 'Pneumonia', 13: 'Dimorphic hemmorhoids(piles)', 18: 'Heart attack', 39: 'Varicose veins', 26: 'Hypothyroidism', 24: 'Hyperthyroidism', 25: 'Hypoglycemia', 31: 'Osteoarthristis', 5: 'Arthritis', 0: '(vertigo) Paroymsal  Positional Vertigo', 2: 'Acne', 38: 'Urinary tract infection', 35: 'Psoriasis', 27: 'Impetigo'}

# Model Prediction function
def get_predicted_value(patient_symptoms):
    input_vector = np.zeros(len(symptoms_dict))
    for item in patient_symptoms:
        input_vector[symptoms_dict[item]] = 1
    return diseases_list[svc.predict([input_vector])[0]]




# creating routes========================================
@app.route("/")
def root():
    if 'email' in session:  # If user is logged in, go to the profile
        return redirect('/user')
    else:
        return redirect('/login')
    
@app.route('/register', methods=['GET','POST'])
def register():
    if request.method =='POST':
        name =request.form['name']
        email =request.form['email']
        password =request.form['password']
        c_password= request.form['c_password']
        if c_password== password:
            new_user = User(name=name,email=email,password=password)
            db.session.add(new_user)
            db.session.commit()
            return redirect('/user')
        else:
            return render_template('/register.html', error= "Passwords don't match")
    return render_template('/register.html')

@app.route('/login', methods=['GET','POST'])
def login():
    if request.method =='POST':
        email = request.form['email']
        password= request.form['password']

        user = User.query.filter_by(email=email).first()

        if user and user.check_password(password):
            session['name']=user.name
            session['email']=user.email
            session['password'] = user.password
            return redirect('/user')
        else:
            return render_template("login.html",error="User Not Found!")

    return render_template('login.html')
@app.route('/user')
def user():
    if 'email' in session:  # Check if the user is logged in
        return render_template("profile.html", name=session['name'])
    return redirect('/login')


@app.route('/logout')
def logout():
    session.pop('email',None)
    return redirect('/login')
    
@app.route("/diagnose")
def index():
    return render_template("index.html")



# Define a route for the home page
@app.route('/predict', methods=['GET', 'POST'])
def home():
    if request.method == 'POST':
        symptoms = request.form.get('symptoms')
        # mysysms = request.form.get('mysysms')
        # print(mysysms)
        print(symptoms)
        if not symptoms or not all(symptom in symptoms_dict for symptom in user_symptoms):
            return render_template('index.html', message="Invalid symptom input.")

        if symptoms =="Symptoms":
            message = "Please either write symptoms or you have written misspelled symptoms"
            return render_template('index.html', message=message)
        else:

            # Split the user's input into a list of symptoms (assuming they are comma-separated)
            user_symptoms = [s.strip() for s in symptoms.split(',')]
            # Remove any extra characters, if any
            user_symptoms = [symptom.strip("[]' ") for symptom in user_symptoms]
            predicted_disease = get_predicted_value(user_symptoms)
            dis_des, precautions, medications, rec_diet = helper(predicted_disease)

            my_precautions = []
            for i in precautions[0]:
                my_precautions.append(i)

            return render_template('index.html', predicted_disease=predicted_disease, dis_des=dis_des,
                                   my_precautions=my_precautions, medications=medications, my_diet=rec_diet
                                   )

    return render_template('index.html')



# about view funtion and path

@app.route('/about')
def about():
    return render_template("about.html")
# contact view funtion and path
@app.route('/contact')
def contact():
    return render_template("contact.html")

# developer view funtion and path
@app.route('/developer')
def developer():
    return render_template("developer.html")

# about view funtion and path
@app.route('/blog')
def blog():
    return render_template("blog.html")


if __name__ == '__main__':

    app.run(debug=True)