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Move Imgur to API #757

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Jan 22, 2023
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76 changes: 22 additions & 54 deletions bdfr/site_downloaders/imgur.py
Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,6 @@
import re
from typing import Optional

import bs4
from praw.models import Submission

from bdfr.exceptions import SiteDownloaderError
Expand All @@ -23,73 +22,42 @@ def find_resources(self, authenticator: Optional[SiteAuthenticator] = None) -> l
self.raw_data = self._get_data(self.post.url)

out = []
if "album_images" in self.raw_data:
images = self.raw_data["album_images"]
for image in images["images"]:
out.append(self._compute_image_url(image))
if "is_album" in self.raw_data:
for image in self.raw_data["images"]:
if "mp4" in image:
out.append(Resource(self.post, image["mp4"], Resource.retry_download(image["mp4"])))
else:
out.append(Resource(self.post, image["link"], Resource.retry_download(image["link"])))
else:
out.append(self._compute_image_url(self.raw_data))
if "mp4" in self.raw_data:
out.append(Resource(self.post, self.raw_data["mp4"], Resource.retry_download(self.raw_data["mp4"])))
else:
out.append(Resource(self.post, self.raw_data["link"], Resource.retry_download(self.raw_data["link"])))
return out

def _compute_image_url(self, image: dict) -> Resource:
ext = self._validate_extension(image["ext"])
if image.get("prefer_video", False):
ext = ".mp4"

image_url = "https://i.imgur.com/" + image["hash"] + ext
return Resource(self.post, image_url, Resource.retry_download(image_url))

@staticmethod
def _get_data(link: str) -> dict:
try:
if re.search(r".*/(.*?)(gallery/|a/)", link):
imgur_id = re.match(r".*/(?:gallery/|a/)(.*?)(?:/.*)?$", link).group(1)
link = f"https://api.imgur.com/3/album/{imgur_id}"
else:
imgur_id = re.match(r".*/(.*?)(?:_d)?(?:\..{0,})?$", link).group(1)
gallery = "a/" if re.search(r".*/(.*?)(gallery/|a/)", link) else ""
if len(imgur_id) > 7:
if imgur_id.endswith(("s", "b", "t", "m", "l", "h")):
imgur_id = imgur_id[:7]
else:
raise SiteDownloaderError(f"Imgur ID error in link {link}")
link = f"https://imgur.com/{gallery}{imgur_id}"
link = f"https://api.imgur.com/3/image/{imgur_id}"
except AttributeError:
raise SiteDownloaderError(f"Could not extract Imgur ID from {link}")

res = Imgur.retrieve_url(link, cookies={"over18": "1", "postpagebeta": "0"})

soup = bs4.BeautifulSoup(res.text, "html.parser")
scripts = soup.find_all("script", attrs={"type": "text/javascript"})
scripts = [script.string.replace("\n", "") for script in scripts if script.string]

script_regex = re.compile(r"\s*\(function\(widgetFactory\)\s*{\s*widgetFactory\.mergeConfig\(\'gallery\'")
chosen_script = list(filter(lambda s: re.search(script_regex, s), scripts))
if len(chosen_script) != 1:
raise SiteDownloaderError(f"Could not read page source from {link}")

chosen_script = chosen_script[0]

outer_regex = re.compile(r"widgetFactory\.mergeConfig\(\'gallery\', ({.*})\);")
inner_regex = re.compile(r"image\s*:(.*),\s*group")
try:
image_dict = re.search(outer_regex, chosen_script).group(1)
image_dict = re.search(inner_regex, image_dict).group(1)
except AttributeError:
raise SiteDownloaderError("Could not find image dictionary in page source")
headers = {
"referer": "https://imgur.com/",
"origin": "https://imgur.com",
"content-type": "application/json",
"Authorization": "Client-ID 546c25a59c58ad7",
}
res = Imgur.retrieve_url(link, headers=headers)

try:
image_dict = json.loads(image_dict)
image_dict = json.loads(res.text)
except json.JSONDecodeError as e:
raise SiteDownloaderError(f"Could not parse received dict as JSON: {e}")
raise SiteDownloaderError(f"Could not parse received response as JSON: {e}")

return image_dict

@staticmethod
def _validate_extension(extension_suffix: str) -> str:
extension_suffix = re.sub(r"\?.*", "", extension_suffix)
possible_extensions = (".jpg", ".png", ".mp4", ".gif")
selection = [ext for ext in possible_extensions if ext == extension_suffix]
if len(selection) == 1:
return selection[0]
else:
raise SiteDownloaderError(f'"{extension_suffix}" is not recognized as a valid extension for Imgur')
return image_dict["data"]
98 changes: 2 additions & 96 deletions tests/site_downloaders/test_imgur.py
Original file line number Diff line number Diff line change
Expand Up @@ -5,105 +5,10 @@

import pytest

from bdfr.exceptions import SiteDownloaderError
from bdfr.resource import Resource
from bdfr.site_downloaders.imgur import Imgur


@pytest.mark.online
@pytest.mark.parametrize(
("test_url", "expected_gen_dict", "expected_image_dict"),
(
(
"https://imgur.com/a/xWZsDDP",
{"num_images": "1", "id": "xWZsDDP", "hash": "xWZsDDP"},
[{"hash": "ypa8YfS", "title": "", "ext": ".png", "animated": False}],
),
(
"https://imgur.com/gallery/IjJJdlC",
{"num_images": 1, "id": 384898055, "hash": "IjJJdlC"},
[
{
"hash": "CbbScDt",
"description": "watch when he gets it",
"ext": ".gif",
"animated": True,
"has_sound": False,
}
],
),
(
"https://imgur.com/a/dcc84Gt",
{"num_images": "4", "id": "dcc84Gt", "hash": "dcc84Gt"},
[
{"hash": "ylx0Kle", "ext": ".jpg", "title": ""},
{"hash": "TdYfKbK", "ext": ".jpg", "title": ""},
{"hash": "pCxGbe8", "ext": ".jpg", "title": ""},
{"hash": "TSAkikk", "ext": ".jpg", "title": ""},
],
),
(
"https://m.imgur.com/a/py3RW0j",
{
"num_images": "1",
"id": "py3RW0j",
"hash": "py3RW0j",
},
[{"hash": "K24eQmK", "has_sound": False, "ext": ".jpg"}],
),
),
)
def test_get_data_album(test_url: str, expected_gen_dict: dict, expected_image_dict: list[dict]):
result = Imgur._get_data(test_url)
assert all([result.get(key) == expected_gen_dict[key] for key in expected_gen_dict.keys()])

# Check if all the keys from the test dict are correct in at least one of the album entries
assert any(
[
all([image.get(key) == image_dict[key] for key in image_dict.keys()])
for image_dict in expected_image_dict
for image in result["album_images"]["images"]
]
)


@pytest.mark.online
@pytest.mark.parametrize(
("test_url", "expected_image_dict"),
(
("https://i.imgur.com/dLk3FGY.gifv", {"hash": "dLk3FGY", "title": "", "ext": ".mp4", "animated": True}),
(
"https://imgur.com/65FqTpT.gifv",
{"hash": "65FqTpT", "title": "", "description": "", "animated": True, "mimetype": "video/mp4"},
),
),
)
def test_get_data_gif(test_url: str, expected_image_dict: dict):
result = Imgur._get_data(test_url)
assert all([result.get(key) == expected_image_dict[key] for key in expected_image_dict.keys()])


@pytest.mark.parametrize("test_extension", (".gif", ".png", ".jpg", ".mp4"))
def test_imgur_extension_validation_good(test_extension: str):
result = Imgur._validate_extension(test_extension)
assert result == test_extension


@pytest.mark.parametrize(
"test_extension",
(
".jpeg",
"bad",
".avi",
".test",
".flac",
),
)
def test_imgur_extension_validation_bad(test_extension: str):
with pytest.raises(SiteDownloaderError):
Imgur._validate_extension(test_extension)


@pytest.mark.online
@pytest.mark.parametrize(
("test_url", "expected_hashes"),
Expand All @@ -130,7 +35,7 @@ def test_imgur_extension_validation_bad(test_extension: str):
("https://i.imgur.com/lFJai6i.gifv", ("01a6e79a30bec0e644e5da12365d5071",)),
("https://i.imgur.com/ywSyILa.gifv?", ("56d4afc32d2966017c38d98568709b45",)),
("https://imgur.com/ubYwpbk.GIFV", ("d4a774aac1667783f9ed3a1bd02fac0c",)),
("https://i.imgur.com/j1CNCZY.gifv", ("58e7e6d972058c18b7ecde910ca147e3",)),
("https://i.imgur.com/j1CNCZY.gifv", ("ed63d7062bc32edaeea8b53f876a307c",)),
("https://i.imgur.com/uTvtQsw.gifv", ("46c86533aa60fc0e09f2a758513e3ac2",)),
("https://i.imgur.com/OGeVuAe.giff", ("77389679084d381336f168538793f218",)),
("https://i.imgur.com/OGeVuAe.gift", ("77389679084d381336f168538793f218",)),
Expand All @@ -142,6 +47,7 @@ def test_imgur_extension_validation_bad(test_extension: str):
("https://imgur.com/a/1qzfWtY/gifv", ("65fbc7ba5c3ed0e3af47c4feef4d3735",)),
("https://imgur.com/a/1qzfWtY/mp4", ("65fbc7ba5c3ed0e3af47c4feef4d3735",)),
("https://imgur.com/a/1qzfWtY/spqr", ("65fbc7ba5c3ed0e3af47c4feef4d3735",)),
("https://i.imgur.com/expO7Rc.gifv", ("e309f98158fc98072eb2ae68f947f421",)),
),
)
def test_find_resources(test_url: str, expected_hashes: list[str]):
Expand Down
2 changes: 1 addition & 1 deletion tests/test_connector.py
Original file line number Diff line number Diff line change
Expand Up @@ -336,7 +336,7 @@ def test_get_multireddits_public(
(
("danigirl3694", 10),
("danigirl3694", 50),
("CapitanHam", None),
("nasa", None),
),
)
def test_get_user_submissions(test_user: str, limit: int, downloader_mock: MagicMock, reddit_instance: praw.Reddit):
Expand Down