text: import json
  from typing import List
  from requests import get, post, put, RequestException
  import re
  from dracoonsprayer.util.models import Branding, BrandingUpload
  from PIL import Image
  from resizeimage import resizeimage
  import typer
  import os
  import zipfile
  
  
  # helper to validate DRACOON version string
  def validate_dracoon_version(version_string: str):
      version_string = version_string[:4]
  
      version = version_string.split('.')
  
      version_numbers = []
  
      for number in version:
          version_numbers.append(int(number))
      
      return version_numbers[0] == 4 and version_numbers[1] >= 19
  
  # validate DRACOON url 
  def validate_dracoon_url(dracoon_url: str):
  
      # validate if correct url format
      valid_url = re.compile(
          r'^(?:https)?://' # https://
          r'(?:(?:[A-Z0-9](?:[A-Z0-9-]{0,61}[A-Z0-9])?\.)+(?:[A-Z]{2,6}\.?|[A-Z0-9-]{2,}\.?))' #domain...
          r'(?:/?|[/?]\S+)$', re.IGNORECASE)
      
      if re.match(valid_url, dracoon_url):
          # validate if real DRACOON instance
          dracoon_version_url = dracoon_url + '/api/v4/public/software/version'
          try:
              version_response = get(dracoon_version_url)
              if version_response and 'restApiVersion' in version_response.json():
                  version_string = version_response.json()['restApiVersion']
              else: 
                  error_txt = typer.style('Connection error: ', bg=typer.colors.RED, fg=typer.colors.WHITE)
                  typer.echo(f'{error_txt} Incompatible DRACOON version.')  
                  return False
  
          except RequestException as e:
              error_txt = typer.style('Connection error: ', bg=typer.colors.RED, fg=typer.colors.WHITE)
              typer.echo(f'{error_txt} no connection to {dracoon_url} possible.')  
              return False
          
          # finalize by validating if compatible version (>= 4.19)
          return validate_dracoon_version(version_string)
  
      else:
          return False
  
  # get public branding
  def get_branding(url: str, on_prem_source: bool):
  
      dracoon_url = 'https://dracoon.team'
  
      # remove trailing / if present
      if url[-1] == '/':
          url = url[:-1]
  
      headers = {
          "accept": "application/json"
      }
  
      if on_prem_source: 
          api_url =  dracoon_url + '/branding/api/v1/public/branding'
          headers["Host"] = url[8:]
      else:
          api_url = url + '/branding/api/v1/public/branding'
  
      # only get branding if valid DRACOON URL 
      if not on_prem_source and validate_dracoon_url(url):
          try:
              branding_response = get(api_url)
  
          # handle connection errors
          except RequestException as e:
              error_txt = typer.style('Connection error: ', bg=typer.colors.RED, fg=typer.colors.WHITE)
              typer.echo(f'{error_txt} no connection to {dracoon_url} possible.')  
              return None
  
          # return call response
          typer.echo(f'Downloaded branding from {url}.')
          return branding_response.json()
  
      elif on_prem_source and validate_dracoon_url(dracoon_url):
          try:
              branding_response = get(api_url, headers=headers)
  
          # handle connection errors
          except RequestException as e:
              return None
  
          # return call response
          typer.echo(f'Downloaded on prem branding for {url}.')
          return branding_response.json()   
  
  
  # function to download all branding images 
  def download_images(branding: Branding, path: str = None):
  
      with typer.progressbar(branding['images'], len(branding['images']), label='Downloading branding images') as progress:
      # iterate through all images
          for image in progress:
  
              # iterate through all sizes
              for file in image['files']:
              
                  # get only large size
                  if file['size'] == 'large':
                      image_response = get(file['url'], allow_redirects=True)
                      
                      # get correct file ending for PNG or JPG
                      mime_type = image_response.headers['Content-Type'].split('/')
                      file_type = mime_type[1]
                      if file_type == 'jpeg': file_type = 'jpg'
                      if file_type == 'vnd.microsoft.icon': break
                      filename = image['type'] + '_' + file['size'] + '.' + file_type
                      if path: filename = path + filename
                      open(filename, 'wb').write(image_response.content)
  
                      # convert JPG to PNG 
                      if file_type == 'jpg':
                          with open(filename, 'rb') as f:
                              with Image.open(f) as image:
                                  png_name = filename[:-3] + 'png'
                                  image.save(png_name)
                          os.remove(filename)
                          
  
      # resize webLogo_large.png
      filename = 'webLogo_large.png'
      with open(filename, 'rb') as f:
          with Image.open(f) as image:
              resized = resizeimage.resize_contain(image, [1136, 440])
              resized.save(filename, image.format)
              typer.echo('Resized webLogo.')
  
      # resize webLogo_large.png
      filename = 'appLogo_large.png'
      with open(filename, 'rb') as f:
          with Image.open(f) as image:
              resized = resizeimage.resize_contain(image, [1900, 1900])
              resized.save(filename, image.format)
              typer.echo('Resized appLogo.')
  
  
  # function to upload all images to a branding
  def upload_images(url: str, auth_header):
      # remove trailing / if present
      if url[-1] == '/':
          url = url[:-1]
  
      # public branding API endpoint
      api_url = url + '/branding/api/v1/branding/files'
  
      images = ['webLogo' ,'webSplashImage', 'squaredLogo', 'appSplashImage', 'appLogo']
  
      image_ids = []
  
      with typer.progressbar(images, 5, label='Uploading branding images') as progress:
  
          # only get branding if valid DRACOON URL 
          if validate_dracoon_url(url):
  
              # upload each image as mulitpart upload 
              for image in progress:
  
                  img_file = open(image + '_large.png', 'rb')
                  payload = {
                      'file': img_file
                  }
  
                  try:
                      upload_response = post(api_url + '?type=' + image, files=payload, headers=auth_header)
  
                      if upload_response.status_code == 200:
  
                          image_id = {
                          'type': image,
                          'id': upload_response.json()['id']
                          }
                          image_ids.append(image_id)
           
                  # handle connection errors
                  except RequestException as e:
                      error_txt = typer.style('Connection error: ', bg=typer.colors.RED, fg=typer.colors.WHITE)
                      typer.echo(f'{error_txt} no connection to {url} possible.')  
                      return None
              
              if upload_response.status_code == 200:
  
                  return image_ids
                  
              # handle missing config manager role    
              elif upload_response.status_code == 403:
                  error_txt = typer.style('Error: ', bg=typer.colors.RED, fg=typer.colors.WHITE)
                  typer.echo(f'{error_txt} Config Manager role required ({upload_response.status_code}).')  
              else:
                  error_txt = typer.style('Error: ', bg=typer.colors.RED, fg=typer.colors.WHITE)
                  typer.echo(f'{error_txt} {upload_response.status_code}')  
                  typer.echo(f'{error_txt} {upload_response.text}')  
                  return None
  
                       
  def delete_images(path: str = None):
  
      images = ['webLogo_large.png' ,'webSplashImage_large.png', 
      'squaredLogo_large.png', 'appSplashImage_large.png', 'appLogo_large.png', 
      'ingredientLogo_large.png']
  
      for image in images:
          if path: image = path + '/' + image
  
      for image in images:
          os.remove(image)
          typer.echo(f'Temporary file {image} deleted.')
  
  def delete_zip_images(path: str = None):
  
      images = ['webLogo_large.png' ,'webSplashImage_large.png', 
      'squaredLogo_large.png', 'appSplashImage_large.png', 'appLogo_large.png']
  
      for image in images:
          if path: image = path + '/' + image
  
      for image in images:
          os.remove(image)
          typer.echo(f'Temporary file {image} deleted.')
  
  def delete_branding_json(path: str = None):
  
      branding_json = 'branding.json'
  
      if path: branding_json = path + '/' + branding_json
      os.remove(branding_json)
      typer.echo(f'Temporary file {branding_json} deleted.')
      
      
  # PUT request to update branding
  def update_branding(url: str, branding: BrandingUpload, auth_header):
  
      # remove trailing / if present
      if url[-1] == '/':
          url = url[:-1]
  
      # public branding API endpoint
      api_url = url + '/branding/api/v1/branding'
  
      # only get branding if valid DRACOON URL 
      if validate_dracoon_url(url):
          try:
              update_response = put(url=api_url, json=branding, headers=auth_header)
          except RequestException as e:
              error_txt = typer.style('Connection error: ', bg=typer.colors.RED, fg=typer.colors.WHITE)
              typer.echo(f'{error_txt} no connection to {url} possible.')  
              return None
  
          if update_response.status_code == 200:
              return update_response
          else:
              error_txt = typer.style('Error: ', bg=typer.colors.RED, fg=typer.colors.WHITE)
              typer.echo(f'{error_txt} {update_response.status_code}')
              typer.echo(f'{error_txt} {update_response.text}')  
              return None
  
  def zip_branding(source_url: str, zip_name: str, on_prem_source: bool):
  
      branding_json = get_branding(source_url, on_prem_source)
      download_images(branding_json)
  
      parsed_colors = []
  
      # parse colors (only normal color required)
      for color in branding_json['colors']:
          for details in color['colorDetails']:
              if details['type'] == 'normal':
                  parsed_colors.append({
                          'type': color['type'],
                          'colorDetails': [details]
                      })
  
      # create payload to dump update ready json (without image ids) to file
      parsed_branding = {
              'appearanceLoginBox': branding_json['appearanceLoginBox'],
              'colorizeHeader': branding_json['colorizeHeader'],
              'colors': parsed_colors,
              'emailContact':branding_json['emailContact'],
              'emailSender': branding_json['emailSender'],
              'imprintUrl': branding_json['imprintUrl'],
              'positionLoginBox': branding_json['positionLoginBox'],
              'privacyUrl': branding_json['privacyUrl'],
              'productName': branding_json['productName'],
              'supportUrl': branding_json['supportUrl'],
              'texts': branding_json['texts']
          }
  
     # dump json to file
      with open('branding.json', 'w') as jsonfile:
          json.dump(parsed_branding, jsonfile)
  
      images = ['webLogo' ,'webSplashImage', 'squaredLogo', 'appSplashImage', 'appLogo']
  
      with zipfile.ZipFile(zip_name, 'w', compression=zipfile.ZIP_DEFLATED) as branding_zip:
          branding_zip.write('branding.json')
          for image in images:
              branding_zip.write(image + '_large.png')
  
      delete_images()
      delete_branding_json()
      success_txt = typer.style('SUCCESS: ', fg=typer.colors.GREEN, bold=True)
      typer.echo(f'{success_txt} Stored branding from {source_url} in file {zip_name}')
  
  # function to upload branding from zip      
  def load_from_zip(zip_file: str, url: str, auth_header):
  
      with zipfile.ZipFile('branding.zip', 'r') as branding_zip:
          branding_files = branding_zip.namelist()
          required_files = ['branding.json', 'webLogo_large.png', 'webSplashImage_large.png', 
          'squaredLogo_large.png', 'appSplashImage_large.png', 'appLogo_large.png']
  
          for file in required_files:
              if file not in branding_files:
                  error_txt = typer.style('Format error: ', bg=typer.colors.RED, fg=typer.colors.WHITE)
                  typer.echo(f'{error_txt}Invalid branding zip file format.')  
                  raise SystemExit()
         
          # extract in cwd
          branding_zip.extractall()
      
      # upload images
      image_ids = upload_images(url, auth_header)
  
      # load branding JSON
      with open('branding.json') as json_file:
          branding_json = json.load(json_file)
  
      parsed_colors = []
          
      # parse colors (only normal color required)
      for color in branding_json['colors']:
          for details in color['colorDetails']:
              if details['type'] == 'normal':
                  parsed_colors.append({
                          'type': color['type'],
                          'colorDetails': [details]
                  })
  
      updated_branding = {
              'appearanceLoginBox': branding_json['appearanceLoginBox'],
              'colorizeHeader': branding_json['colorizeHeader'],
              'colors': parsed_colors,
              'emailContact':branding_json['emailContact'],
              'emailSender': branding_json['emailSender'],
              'images': image_ids,
              'imprintUrl': branding_json['imprintUrl'],
              'positionLoginBox': branding_json['positionLoginBox'],
              'privacyUrl': branding_json['privacyUrl'],
              'productName': branding_json['productName'],
              'supportUrl': branding_json['supportUrl'],
              'texts': branding_json['texts']
          }
  
      # send request to update branding
      result = update_branding(url, updated_branding, auth_header)
      delete_zip_images()
      delete_branding_json()
  
      if result is not None:
          success_txt = typer.style('SUCCESS: ', fg=typer.colors.GREEN, bold=True)
          typer.echo(f'{success_txt} Sprayed source branding from {zip_file} to {url}.')
      else:
          error_txt = typer.style('Error: ', bg=typer.colors.RED, fg=typer.colors.WHITE)
          typer.echo(f'{error_txt} Branding could not be sprayed to target.')
     
          
  
      
  
  
              
  
  
  
  
      
          
  
  
  
                      
  
  
  
  
  
  
  
      
  
          
  
      