import os

import k3httpmultipart
import k3fs

# http request headers
headers = {'Content-Length': 1200}

# http request fields
file_path = '/tmp/abc.txt'
k3fs.fwrite(file_path, '123456789')
fields = [
    {
        'name': 'aaa',
        'value': 'abcde',
    },
    {
        'name': 'bbb',
        'value': [open(file_path), os.path.getsize(file_path), 'abc.txt']
    },
]

# get http request headers
multipart = k3httpmultipart.Multipart()
res_headers = multipart.make_headers(fields, headers=headers)

print(res_headers)

#output:
#{
#    'Content-Type': 'multipart/form-data; boundary=FormBoundaryrGKCBY7',
#    'Conetnt-Length': 1200,
#}

# get http request body reader
multipart = k3httpmultipart.Multipart()
body_reader = multipart.make_body_reader(fields)
data = []

for body in body_reader:
    data.append(body)

print(''.join(data))

#output:
#--FormBoundaryrGKCBY7
#Content-Disposition: form-data; name=aaa
#
#abcde
#--FormBoundaryrGKCBY7
#Content-Disposition: form-data; name=bbb; filename=abc.txt
#Content-Type: text/plain
#
#123456789
#--FormBoundaryrGKCBY7--