"XMP Manipulator for gallery-dl"
import logging
logging.basicConfig(stream=sys.stderr, level=logging.DEBUG)

allowed_exts=[
  "html", "htm", "xhtml", "xht",            # HTML
  "tif", "tiff",                            # TIFF
  "jpeg", "jpg", "pjpeg", "pjpg", "jpe",    # JPEG
  "jp2",  "jpf", "jpx", "jpm", "mj2",       # JPEG 2000
  "png", "apng",                            # PNG
  "gif",                                    # GIF
  "mp3",                                    # MPEG-1 / MPEG-2 Layer III
  "mp4", "m4a", "m4p", "m4b", "m4r", "m4v", # MPEG-4
  "mov", "qt",                              # Apple QuickTime .mov
  "pdf",                                    # PDF
  "webp"                                    # WebP
]

# def backupMetadata(file: str, outputFileExt: str = "xmp_backup.json.xz") -> bool:
#   """Exports XMP metadata inside of a file.
  
#   Parameters
#   ----------
#   file : str
#       Location of the file relative to the working directory.
#   outputFileExt : str, optional
#       The suffix used for the backup file. By default, the output file will be formatted as such:
#         <source filename>.xmp_backup.json.xz
        
#   Returns
#   -------
#   bool
#     True, if operation was successful.
#     False, if operation failed.
#   """
#   from libxmp.utils import file_to_dict
  
#   import json
#   with open(f"{file}.xmp_backup.json.xz",'w+b') as bfile
#     logging.debug(f"writing to {bfile}")
#     import lzma
#     bfile.write(lzma.compress(
#       bytes(json.dumps(file_to_dict(file),sort_keys=True)),
#       format=FORMAT_XZ,
#       check=CHECK_SHA256,
#       preset=9
#     ))
#     logging.debug("wrote backup data")
    
#   logging.info("backup done!")
  
def backupMetadata(file):
  import pyexiv2
  data = pyexiv2.ImageMetadata(file)
  data.read()
  
  full = []
  
  for key in data.xmp_keys:
    full.append([
      key,
      data[key].raw_value
    ])
  
  with open(f"{file}.xmp_backup.json.xz",'w+b') as bfile
    import lzma, json
    bfile.write(lzma.compress(
      bytes(json.dumps(full)),
      format=FORMAT_XZ,
      check=CHECK_SHA256,
      preset=9
    ))
  
# def writeTags(file: str, tags: dict) -> bool:
#   """Writes XMP tags to file taking the info.json file as a dict.
  
  
#   """
#   from libxmp import XMPFiles, consts
#   xmpfile = XMPFiles(file_path=file,)
#   if artist in tags:
#     if type(tags.artist) == str:
#       xmp.set_property(consts.XMP_NS_DC, u'creator', tags.artist.decode('unicode-escape'))

def writeTags(file, tags):
  import pyexiv2
  xmptags = pyexiv2.ImageMetadata(file)
  xmptags.read()
  
   if artist in tags:
    if type(tag.artist) == str:
      xmptags['Xmp.dc.creator'] = tags.artist
    elif tags.category == "deviantart":
      xmptags['Xmp.dc.creator'] = tags.artist.username
  
  if title in tags:
    xmptags['Xmp.dc.title'] = tags.title
   
  if description in tags:
    xmptags['Xmp.dc.description'] = tags.description
  
  if date in tags:
    xmptags['Xmp.dc.date'] = tags.date
  
  from getpub import getPub
  xmptags['Xmp.dc.publisher'] = getPub(tags)
  del getPub
  
  keywords=[]
  
  if tags in tags: for item in tags.tags: if item not in keywords: keywords.append(item)
  
  if theme in tags and tags.theme not in keywords:
    keywords.append(tags.theme)
  
  if rating in tags and tags.rating not in keywords:
    keywords.append(tags.rating)
  
  if species in tags and tags.species not in keywords:
    keywords.append(tags.species)
  
  if gender in tags and tags.gender not in keywords:
    keywords