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# -*- coding: utf-8 -*- |
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"""Provides Rest API interfaces |
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""" |
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import os |
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import base64 |
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import glob |
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import json |
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import datetime |
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import tempfile |
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import responder |
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from .convert import Image2PDF |
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from .utils.logging import get_logger |
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api = responder.API() |
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_logger = get_logger("RestAPI") |
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@api.route("/status") |
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def status(_, resp): |
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"""Health Check |
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""" |
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_logger.debug("health Check") |
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resp.media = {"status": "ok"} |
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@api.route("/data/upload") |
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async def upload_image_file(req, resp): |
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"""Endpoint: File uploader |
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""" |
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data = await req.media() |
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_logger.debug(data) |
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content_type = data["contentType"] |
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extension = convert_content_type_to_extension(content_type) |
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images_b64 = data["images"] |
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tmp_dir = tempfile.mkdtemp() |
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write_image(images_b64, extension, tmp_dir) |
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resp.media = {"upload_id": tmp_dir} |
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@api.background.task |
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def write_image(images_b64, extension, tmp_dir): |
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"""Images write at tmp_dir |
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This API is background task. |
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Args: |
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images_b64: Base64 encoded images list |
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extension: Image extension |
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tmp_dir: Temp directory writing images |
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Returns: |
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bool: If success return true. |
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""" |
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for i, content in enumerate(images_b64): |
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image = base64.b64decode(content) |
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file_name = os.path.join(tmp_dir, str(i) + "." + extension) |
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_logger.debug("file_name: {}".format(file_name)) |
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with open(file_name, "wb") as image_file: |
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image_file.write(image) |
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return True |
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@api.route("/convert/pdf") |
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async def convert_image_to_pdf(req, resp): |
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"""Endpoint Image converter to PDF |
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""" |
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data = await req.media() |
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_logger.debug(data) |
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upload_id = data["uploadId"] |
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content_type = data["contentType"] |
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result_meta = os.path.join(upload_id, "result_meta.txt") |
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if os.path.exists(result_meta): |
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os.remove(result_meta) |
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extension = convert_content_type_to_extension(content_type) |
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file_list = sorted( |
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glob.glob(os.path.join(upload_id, "*." + extension)), reverse=True |
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) |
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file_base, _ = os.path.splitext(os.path.basename(file_list[0])) |
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digits = len(file_base) |
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_logger.debug(file_list) |
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convert_pdf(digits, extension, upload_id) |
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resp.media = {"upload_id": upload_id} |
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@api.background.task |
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def convert_pdf(digits, extension, upload_id): |
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"""Convert images to PDF |
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This API is background task. |
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Args: |
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digits: file serial number digits |
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extension: Image extension |
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upload_id: Request ID |
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Returns: |
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bool: If success return true. |
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""" |
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converter = Image2PDF(digits=digits, extension=extension, directory_path=upload_id) |
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converter.make_pdf("result.pdf") |
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with open(os.path.join(upload_id, "result_meta.txt"), "w") as result_txt: |
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now = datetime.datetime.now() |
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result = { |
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"upload_id": upload_id, |
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"digits": digits, |
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"extension": extension, |
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"datetime": now.strftime("%Y/%m/%d %H:%M:%S"), |
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} |
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result_txt.write(json.dumps(result)) |
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return True |
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@api.route("/convert/pdf/download") |
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async def download_result_pdf(req, resp): |
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"""Endpoint download result PDF |
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""" |
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data = await req.media() |
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_logger.debug(data) |
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upload_id = data["uploadId"] |
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result_meta = os.path.join(upload_id, "result_meta.txt") |
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if os.path.exists(result_meta): |
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with open(os.path.join(upload_id, "result.pdf"), "rb") as result_pdf: |
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resp.headers["Content-Type"] = "application/pdf" |
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resp.content = result_pdf.read() |
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else: |
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resp.status_code = api.status_codes.HTTP_404 |
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def convert_content_type_to_extension(content_type): |
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"""Convert image extension to Content-Type |
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Args: |
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content_type: Content-Type |
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Returns: |
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str: extension |
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""" |
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if content_type == "image/jpeg": |
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extension = "jpg" |
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elif content_type == "image/png": |
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extension = "png" |
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elif content_type == "image/gif": |
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extension = "gif" |
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else: |
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extension = False |
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return extension |
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tubone24 /
ebook_homebrew
