from flask import Flask, request, render_template, send_from_directory
from flask import flash, request, redirect, url_for, Response, make_response
from werkzeug.utils import secure_filename

from super_gradients.training import models
from deep_sort_torch.deep_sort.deep_sort import DeepSort
from super_gradients.training.utils.distributed_training_utils import setup_device
from super_gradients.training.processing import ComposeProcessing
import torch

from model_tools import vid_predict, img_predict
from dotenv import load_dotenv
import os
import urllib.request

myhost = os.uname()[1]
import socket

 

# Get the fully qualified domain name

fqdn = socket.getfqdn()

print("Fully qualified domain name of this computer is:");

print(fqdn)

load_dotenv()
secret_key = os.getenv("secret_key")

dir = os.getcwd()+ f'/build'
dir_static= dir + '/static'
dir_ckpt = os.getcwd()+ f'/checkpoints'

ckpt_path =  dir_ckpt + "/best181-8376/ckpt_latest.pth"
best_model = models.get('yolo_nas_s',
                        num_classes=1,
                        checkpoint_path=ckpt_path)

best_model = best_model.to("cuda" if torch.cuda.is_available() else "cpu")                                             
best_model.eval()

#### Initiatize tracker
tracker_model = "./checkpoints/ckpt.t7"
tracker = DeepSort(model_path=tracker_model,max_age=30,nn_budget=100, max_iou_distance=0.7, max_dist=0.2)


ALLOWED_EXTENSIONS = {'png', 'jpg', 'jpeg', 'gif', 'mp4', 'avi','webm'}

app = Flask(__name__, template_folder=dir,static_folder=dir_static)
app.config['UPLOAD_FOLDER'] = dir_static
app.config['MAX_CONTENT_LENGTH'] = 20*1024*1024
app.secret_key = secret_key

def allowed_file(filename):
    return '.' in filename and \
           filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS

@app.route('/')
def index():
    predictions = False
    return render_template('index.html', predictions=predictions)

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

    if request.method == 'POST':
        print('Form',request.form.get('options'))
        try:
            filename = request.form.get('options')
            if filename:
                save_path = os.path.join(app.config['UPLOAD_FOLDER'], filename)
                filetype = 'video'
                new_filename = filename[:-4] + ".webm"
                save_to = vid_predict(save_path,best_model,tracker, out_path=dir_static, filename=new_filename)
                save_to = url_for('static', filename=new_filename)
                predictions = True
                return render_template('index.html', predictions=predictions, saved_outout=save_to, ft=filetype)
        except:
            pass    
        # check if the post request has the file part
        if ('file') and ('media') not in request.files:
            flash('No file part')
            return redirect(request.url)
        
        try:
            file = request.files['file']
        except:
            file = request.files['media']
        # If the user does not select a file, the browser submits an
        # empty file without a filename.
        if file.filename == '':
            flash('No selected file')
            return redirect(request.url)
        
        if file and allowed_file(file.filename):
            filename = secure_filename(file.filename)
            save_path = os.path.join(app.config['UPLOAD_FOLDER'], filename)
            file.save(save_path)
            new_filename = filename[:-4] + ".webm"

            if filename[-3:] in ['mp4','avi','webm']:
                print("VIDEO")
                filetype = 'video'
                save_to = vid_predict(save_path,best_model,tracker, out_path=dir_static, filename=new_filename)
                save_to = url_for('static', filename=new_filename)
            else:
                print("IMAGE")
                filetype = 'image'
                save_to = img_predict(save_path,best_model, out_path=dir_static, filename=new_filename)
                save_to = url_for('static', filename="pred_0.jpg")

            predictions = True
           
            return render_template('index.html', predictions=predictions, saved_outout=save_to, ft=filetype)



@app.route('/static/<folder>/<file>')
def css(folder,file):
    ''' User will call with with thier id to store the symbol as registered'''   
    path = folder+'/'+file
    return send_from_directory(directory=dir_static,path=path)

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