from re import S
from flask import Flask
import os
from flask_swagger_ui import get_swaggerui_blueprint
from flask_cors import CORS
from app.config import Config
from app.api.routes import api
from app.eco.routes import eco
from app.errors import register_error_handlers
from flask_jwt_extended import (
    JWTManager,
    jwt_required,
    create_access_token,
    get_jwt_identity,
)

def create_app():
    """ Factory function to create a Flask app instance """
    app = Flask(__name__)

    # Load configuration
    app.config.from_object(Config)

    CORS(app)
    JWTManager(app)
    CORS(app, supports_credentials=True) 

    # Swagger Doc
    SWAGGER_URL = app.config.get("SWAGGER_URL")
    API_URL = app.config.get("API_URL")

    # Register blueprints with /api prefix for the main API routes
    app.register_blueprint(api, url_prefix="/api")
    app.register_blueprint(eco, url_prefix="/eco")

    # Swagger UI Blueprint
    api_docs = "/api" + SWAGGER_URL
    api_url = "/api" + API_URL
    swagger_ui_api = get_swaggerui_blueprint(api_docs, api_url)
    swagger_ui_api.name = 'swagger_ui_api'  # Rename blueprint
    app.register_blueprint(swagger_ui_api, url_prefix=api_docs)

    # Second UI (ECO)
    eco_docs = "/eco" + SWAGGER_URL
    eco_api = "/eco" + API_URL
    swagger_ui_eco = get_swaggerui_blueprint(eco_docs, eco_api)
    swagger_ui_eco.name = 'swagger_ui_eco'  # Rename blueprint
    app.register_blueprint(swagger_ui_eco, url_prefix=eco_docs)



    # Error Handlers
    register_error_handlers(app)

    return app