def edit_as_mail(obj: dict, fields=None, bodyfield=None):
# Returns only the fields that changed
# Fields that the user deletes are considered unchanged
if fields is None:
fields = sorted(obj.keys())
if bodyfield is not None:
fields.remove(bodyfield)
elif isinstance(fields, str):
fields = fields.split()
parser = HeaderParser(body=False if bodyfield is None else None)
msg = ''
for f in fields:
dispname = f.replace('_', '-').title()
val = obj[f]
if val is None:
msg += '{}: \n'.format(dispname, val)
parser.add_field(dispname, dest=f)
elif isinstance(val, bool):
msg += '{}: {}\n'.format(dispname, 'yes' if val else 'no')
parser.add_field(dispname, type=BOOL, dest=f)
elif isinstance(val, str):
msg += '{}: {}\n'.format(dispname, val)
parser.add_field(dispname, dest=f)
elif isinstance(val, (list, tuple)):
msg += '{}: {}\n'.format(dispname, ', '.join(map(str, val)))
parser.add_field(dispname, type=LIST, dest=f)
else:
raise TypeError('only string, boolean, and list fields supported')
if bodyfield is not None:
msg += '\n' + (obj[bodyfield] or '')
msg = click.edit(msg, require_save=True)
if msg is None:
return None
data = parser.parse_string(msg)
newobj = dict(data)
if data.body is not None:
newobj[bodyfield] = data.body
for k,v in list(newobj.items()):
if (list(obj[k]) if isinstance(obj[k], tuple) else obj[k]) == v or \
obj[k] is None and v == '':
del newobj[k]
return newobj
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