app.py

import os
import io
import json
import base64
import random
import urllib.request
import urllib.parse
import websocket
import uuid
from dotenv import load_dotenv
from flask import Flask, request, jsonify, render_template
from PIL import Image

# Load environment variables from the .env file
load_dotenv()

# Initialize Flask app
app = Flask(__name__)

# Set server and websocket addresses from environment variables
server_address = os.getenv("SERVER_ADDRESS")
ws_address = os.getenv("WS_ADDRESS")

# Generate a unique client ID
client_id = str(uuid.uuid4())

def make_request(url, data=None, headers=None):
    req = urllib.request.Request(url, data=data, headers=headers)
    with urllib.request.urlopen(req) as response:
        return json.loads(response.read())

def queue_prompt(prompt, token):
    payload = {"prompt": prompt, "client_id": client_id}
    data = json.dumps(payload).encode('utf-8')
    headers = {
        'Authorization': f'Bearer {token}',
        'Content-Type': 'application/json'
    }
    return make_request(f"{server_address}/prompt", data=data, headers=headers)

def get_image(filename, subfolder, image_type, token):
    url_values = {'filename': filename, 'subfolder': subfolder, 'type': image_type}
    url = f"{server_address}/view?{urllib.parse.urlencode(url_values)}"
    req = urllib.request.Request(url)
    req.add_header("Authorization", f"Bearer {token}")
    try:
        return urllib.request.urlopen(req).read()
    except urllib.error.HTTPError as e:
        print(f"HTTP Error: {e.code} - {e.reason}")
        print(e.read())
        raise

def get_history(prompt_id, token):
    headers = {
        'Authorization': f'Bearer {token}',
        'Content-Type': 'application/json'
    }
    return make_request(f"{server_address}/history/{prompt_id}", headers=headers)

def get_images(ws, prompt, token):
    prompt_id = queue_prompt(prompt, token)['prompt_id']
    output_images = {}

    while True:
        out = ws.recv()
        if isinstance(out, str):
            message = json.loads(out)
            if message['type'] == 'executing':
                data = message['data']
                if data['node'] is None and data['prompt_id'] == prompt_id:
                    break  # Execution is done

    history = get_history(prompt_id, token)[prompt_id]
    for node_id in history['outputs']:
        node_output = history['outputs'][node_id]
        images_output = []
        if 'images' in node_output:
            for image in node_output['images']:
                image_data = get_image(image['filename'], image['subfolder'], image['type'], token)
                images_output.append(image_data)
        output_images[node_id] = images_output

    return output_images

# Default route for home welcome
@app.route('/')
def home():
    return render_template('home.html')

# Generate image route
@app.route('/generate_image', methods=['POST'])
def generate_image():
    data = request.json

    # Extract the token from the request headers
    # token = request.headers.get('Authorization')

    token = "Bearer JDJiJDEyJDgwbUJwQTFrQ0JYdS9lR2R4ZEZWdmV3WS9VTmlCeHNtc2txbnBITjR4Qm96ZmFnVUkvNDlh"
    
    if token is None:
        return jsonify({'error': 'No token provided'}), 400
    if token.startswith("Bearer "):
        token = token.split(" ")[1]

    # Base64 decode the encoded token
    token = base64.b64decode(token).decode("utf-8")

    if 'text_prompt' not in data:
        return jsonify({'error': 'No text prompt provided'}), 400

    text_prompt = data['text_prompt']
    
    # Get the path to the current file's directory
    current_dir = os.path.dirname(os.path.abspath(__file__))
    file_path = os.path.join(current_dir, 'workflow_api.json')
    
    with open(file_path, 'r', encoding='utf-8') as file:
        workflow_jsondata = file.read()

    prompt = json.loads(workflow_jsondata)
    prompt["6"]["inputs"]["text"] = text_prompt
    prompt["7"]["inputs"]["text"] = "text, watermark, low quality, extra hands, extra legs."

    seednum = random.randint(1, 9999999999999)
    prompt["3"]["inputs"]["seed"] = seednum

    ws = websocket.WebSocket()
    ws.connect(f"{ws_address}?clientId={client_id}&token={token}")
    images = get_images(ws, prompt, token)
    ws.close()

    output_images_base64 = []

    for node_id in images:
        for image_data in images[node_id]:
            image = Image.open(io.BytesIO(image_data))
            buffered = io.BytesIO()
            image.save(buffered, format="PNG")
            img_str = base64.b64encode(buffered.getvalue()).decode("utf-8")
            output_images_base64.append(img_str)

    return jsonify({'images': output_images_base64})

@app.route('/get_image/<filename>', methods=['GET'])
def get_image_file(filename):
    return send_file(filename, mimetype='image/png')

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=7860)  # Removed 'debug=True'