autogenerated opengraph images for documents

poetry.lock

@@ -1,67 +1,71 @@
 [[package]]
-category = "dev"
-description = "Disable App Nap on OS X 10.9"
-marker = "sys_platform == \"darwin\""
 name = "appnope"
+version = "0.1.0"
+description = "Disable App Nap on OS X 10.9"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.1.0"
+marker = "sys_platform == \"darwin\""
 
 [[package]]
-category = "main"
-description = "ASGI specs, helper code, and adapters"
 name = "asgiref"
+version = "3.2.5"
+description = "ASGI specs, helper code, and adapters"
+category = "main"
 optional = false
 python-versions = ">=3.5"
-version = "3.2.5"
 
 [package.extras]
 tests = ["pytest (>=4.3.0,<4.4.0)", "pytest-asyncio (>=0.10.0,<0.11.0)"]
 
 [[package]]
-category = "dev"
-description = "Specifications for callback functions passed in to an API"
 name = "backcall"
+version = "0.1.0"
+description = "Specifications for callback functions passed in to an API"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.1.0"
 
 [[package]]
-category = "main"
-description = "An easy safelist-based HTML-sanitizing tool."
 name = "bleach"
+version = "3.1.4"
+description = "An easy safelist-based HTML-sanitizing tool."
+category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "3.1.4"
 
 [package.dependencies]
 six = ">=1.9.0"
 webencodings = "*"
 
 [[package]]
-category = "main"
-description = "cffi-based cairo bindings for Python"
 name = "cairocffi"
+version = "1.1.0"
+description = "cffi-based cairo bindings for Python"
+category = "main"
 optional = false
 python-versions = ">= 3.5"
-version = "1.1.0"
-
-[package.dependencies]
-cffi = ">=1.1.0"
-setuptools = ">=39.2.0"
 
 [package.extras]
 doc = ["sphinx", "sphinx-rtd-theme"]
 test = ["pytest-runner", "pytest-cov", "pytest-flake8", "pytest-isort"]
 xcb = ["xcffib (>=0.3.2)"]
 
+[package.dependencies]
+cffi = ">=1.1.0"
+setuptools = ">=39.2.0"
+
 [[package]]
-category = "main"
-description = "A Simple SVG Converter based on Cairo"
 name = "cairosvg"
+version = "2.4.2"
+description = "A Simple SVG Converter based on Cairo"
+category = "main"
 optional = false
 python-versions = ">= 3.5"
-version = "2.4.2"
+
+[package.extras]
+doc = ["sphinx", "sphinx-rtd-theme"]
+test = ["pytest-runner", "pytest-cov", "pytest-flake8", "pytest-isort"]
 
 [package.dependencies]
 cairocffi = "*"
@@ -70,109 +74,102 @@ defusedxml = "*"
 pillow = "*"
 tinycss2 = "*"
 
-[package.extras]
-doc = ["sphinx", "sphinx-rtd-theme"]
-test = ["pytest-runner", "pytest-cov", "pytest-flake8", "pytest-isort"]
-
 [[package]]
-category = "main"
-description = "Foreign Function Interface for Python calling C code."
 name = "cffi"
+version = "1.14.0"
+description = "Foreign Function Interface for Python calling C code."
+category = "main"
 optional = false
 python-versions = "*"
-version = "1.14.0"
 
 [package.dependencies]
 pycparser = "*"
 
 [[package]]
-category = "dev"
-description = "Cross-platform colored terminal text."
-marker = "sys_platform == \"win32\""
 name = "colorama"
+version = "0.4.3"
+description = "Cross-platform colored terminal text."
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "0.4.3"
+marker = "sys_platform == \"win32\""
 
 [[package]]
-category = "main"
-description = "CSS selectors for Python ElementTree"
 name = "cssselect2"
+version = "0.3.0"
+description = "CSS selectors for Python ElementTree"
+category = "main"
 optional = false
 python-versions = ">=3.5"
-version = "0.3.0"
+
+[package.extras]
+doc = ["sphinx", "sphinx-rtd-theme"]
+test = ["pytest-runner", "pytest-cov", "pytest-flake8", "pytest-isort"]
 
 [package.dependencies]
 setuptools = ">=39.2.0"
 tinycss2 = "*"
 webencodings = "*"
 
-[package.extras]
-doc = ["sphinx", "sphinx-rtd-theme"]
-test = ["pytest-runner", "pytest-cov", "pytest-flake8", "pytest-isort"]
-
 [[package]]
-category = "dev"
-description = "Decorators for Humans"
 name = "decorator"
+version = "4.4.2"
+description = "Decorators for Humans"
+category = "dev"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*"
-version = "4.4.2"
 
 [[package]]
-category = "main"
-description = "XML bomb protection for Python stdlib modules"
 name = "defusedxml"
+version = "0.6.0"
+description = "XML bomb protection for Python stdlib modules"
+category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "0.6.0"
 
 [[package]]
-category = "main"
-description = "A high-level Python Web framework that encourages rapid development and clean, pragmatic design."
 name = "django"
+version = "3.0.4"
+description = "A high-level Python Web framework that encourages rapid development and clean, pragmatic design."
+category = "main"
 optional = false
 python-versions = ">=3.6"
-version = "3.0.4"
+
+[package.extras]
+argon2 = ["argon2-cffi (>=16.1.0)"]
+bcrypt = ["bcrypt"]
 
 [package.dependencies]
 asgiref = ">=3.2,<4.0"
 pytz = "*"
 sqlparse = ">=0.2.2"
 
-[package.extras]
-argon2 = ["argon2-cffi (>=16.1.0)"]
-bcrypt = ["bcrypt"]
-
 [[package]]
-category = "main"
-description = "Django model mixins and utilities"
 name = "django-model-utils"
+version = "4.0.0"
+description = "Django model mixins and utilities"
+category = "main"
 optional = false
 python-versions = "*"
-version = "4.0.0"
 
 [package.dependencies]
 Django = ">=2.0.1"
 
 [[package]]
-category = "main"
-description = "Allows Django models to be ordered and provides a simple admin interface for reordering them."
 name = "django-ordered-model"
+version = "3.4.1"
+description = "Allows Django models to be ordered and provides a simple admin interface for reordering them."
+category = "main"
 optional = false
 python-versions = "*"
-version = "3.4.1"
 
 [[package]]
-category = "dev"
-description = "WSGI HTTP Server for UNIX"
 name = "gunicorn"
+version = "20.0.4"
+description = "WSGI HTTP Server for UNIX"
+category = "dev"
 optional = false
 python-versions = ">=3.4"
-version = "20.0.4"
-
-[package.dependencies]
-setuptools = ">=3.0"
 
 [package.extras]
 eventlet = ["eventlet (>=0.9.7)"]
@@ -180,17 +177,16 @@ gevent = ["gevent (>=0.13)"]
 setproctitle = ["setproctitle"]
 tornado = ["tornado (>=0.2)"]
 
+[package.dependencies]
+setuptools = ">=3.0"
+
 [[package]]
-category = "main"
-description = "HTML parser based on the WHATWG HTML specification"
 name = "html5lib"
+version = "1.0.1"
+description = "HTML parser based on the WHATWG HTML specification"
+category = "main"
 optional = false
 python-versions = "*"
-version = "1.0.1"
-
-[package.dependencies]
-six = ">=1.9"
-webencodings = "*"
 
 [package.extras]
 all = ["genshi", "chardet (>=2.2)", "datrie", "lxml"]
@@ -199,13 +195,28 @@ datrie = ["datrie"]
 genshi = ["genshi"]
 lxml = ["lxml"]
 
+[package.dependencies]
+six = ">=1.9"
+webencodings = "*"
+
 [[package]]
-category = "dev"
-description = "IPython: Productive Interactive Computing"
 name = "ipython"
+version = "7.13.0"
+description = "IPython: Productive Interactive Computing"
+category = "dev"
 optional = false
 python-versions = ">=3.6"
-version = "7.13.0"
+
+[package.extras]
+all = ["numpy (>=1.14)", "testpath", "notebook", "nose (>=0.10.1)", "nbconvert", "requests", "ipywidgets", "qtconsole", "ipyparallel", "Sphinx (>=1.3)", "pygments", "nbformat", "ipykernel"]
+doc = ["Sphinx (>=1.3)"]
+kernel = ["ipykernel"]
+nbconvert = ["nbconvert"]
+nbformat = ["nbformat"]
+notebook = ["notebook", "ipywidgets"]
+parallel = ["ipyparallel"]
+qtconsole = ["qtconsole"]
+test = ["nose (>=0.10.1)", "requests", "testpath", "pygments", "nbformat", "ipykernel", "numpy (>=1.14)"]
 
 [package.dependencies]
 appnope = "*"
@@ -220,236 +231,237 @@ pygments = "*"
 setuptools = ">=18.5"
 traitlets = ">=4.2"
 
-[package.extras]
-all = ["numpy (>=1.14)", "testpath", "notebook", "nose (>=0.10.1)", "nbconvert", "requests", "ipywidgets", "qtconsole", "ipyparallel", "Sphinx (>=1.3)", "pygments", "nbformat", "ipykernel"]
-doc = ["Sphinx (>=1.3)"]
-kernel = ["ipykernel"]
-nbconvert = ["nbconvert"]
-nbformat = ["nbformat"]
-notebook = ["notebook", "ipywidgets"]
-parallel = ["ipyparallel"]
-qtconsole = ["qtconsole"]
-test = ["nose (>=0.10.1)", "requests", "testpath", "pygments", "nbformat", "ipykernel", "numpy (>=1.14)"]
-
 [[package]]
-category = "dev"
-description = "Vestigial utilities from IPython"
 name = "ipython-genutils"
+version = "0.2.0"
+description = "Vestigial utilities from IPython"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.2.0"
 
 [[package]]
-category = "dev"
-description = "An autocompletion tool for Python that can be used for text editors."
 name = "jedi"
+version = "0.16.0"
+description = "An autocompletion tool for Python that can be used for text editors."
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "0.16.0"
-
-[package.dependencies]
-parso = ">=0.5.2"
 
 [package.extras]
 qa = ["flake8 (3.7.9)"]
 testing = ["colorama (0.4.1)", "docopt", "pytest (>=3.9.0,<5.0.0)"]
 
-[[package]]
+[package.dependencies]
-category = "main"
+parso = ">=0.5.2"
-description = "A fast and complete Python implementation of Markdown"
+
-name = "markdown2"
+[[package]]
-optional = false
+name = "markdown2"
-python-versions = "*"
+version = "2.3.8"
-version = "2.3.8"
+description = "A fast and complete Python implementation of Markdown"
+category = "main"
+optional = false
+python-versions = "*"
 
 [[package]]
-category = "dev"
-description = "A Python Parser"
 name = "parso"
+version = "0.6.2"
+description = "A Python Parser"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "0.6.2"
 
 [package.extras]
 testing = ["docopt", "pytest (>=3.0.7)"]
 
 [[package]]
-category = "dev"
+name = "pdf2image"
-description = "Pexpect allows easy control of interactive console applications."
+version = "1.14.0"
-marker = "sys_platform != \"win32\""
+description = "A wrapper around the pdftoppm and pdftocairo command line tools to convert PDF to a PIL Image list."
-name = "pexpect"
+category = "main"
 optional = false
 python-versions = "*"
+
+[package.dependencies]
+pillow = "*"
+
+[[package]]
+name = "pexpect"
 version = "4.8.0"
+description = "Pexpect allows easy control of interactive console applications."
+category = "dev"
+optional = false
+python-versions = "*"
+marker = "sys_platform != \"win32\""
 
 [package.dependencies]
 ptyprocess = ">=0.5"
 
 [[package]]
-category = "dev"
-description = "Tiny 'shelve'-like database with concurrency support"
 name = "pickleshare"
+version = "0.7.5"
+description = "Tiny 'shelve'-like database with concurrency support"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.7.5"
 
 [[package]]
-category = "main"
-description = "Python Imaging Library (Fork)"
 name = "pillow"
+version = "8.0.1"
+description = "Python Imaging Library (Fork)"
+category = "main"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=3.6"
-version = "7.0.0"
 
 [[package]]
-category = "dev"
-description = "Library for building powerful interactive command lines in Python"
 name = "prompt-toolkit"
+version = "3.0.4"
+description = "Library for building powerful interactive command lines in Python"
+category = "dev"
 optional = false
 python-versions = ">=3.6.1"
-version = "3.0.4"
 
 [package.dependencies]
 wcwidth = "*"
 
 [[package]]
-category = "dev"
-description = "Run a subprocess in a pseudo terminal"
-marker = "sys_platform != \"win32\""
 name = "ptyprocess"
+version = "0.6.0"
+description = "Run a subprocess in a pseudo terminal"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.6.0"
+marker = "sys_platform != \"win32\""
 
 [[package]]
-category = "main"
-description = "C parser in Python"
 name = "pycparser"
+version = "2.20"
+description = "C parser in Python"
+category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "2.20"
 
 [[package]]
-category = "dev"
-description = "Pygments is a syntax highlighting package written in Python."
 name = "pygments"
+version = "2.6.1"
+description = "Pygments is a syntax highlighting package written in Python."
+category = "dev"
 optional = false
 python-versions = ">=3.5"
-version = "2.6.1"
 
 [[package]]
-category = "main"
-description = "PDF toolkit"
 name = "pypdf2"
-optional = false
-python-versions = "*"
 version = "1.26.0"
+description = "PDF toolkit"
+category = "main"
+optional = false
+python-versions = "*"
 
 [[package]]
-category = "main"
-description = "Pure Python module to hyphenate text"
 name = "pyphen"
-optional = false
-python-versions = "*"
 version = "0.9.5"
-
+description = "Pure Python module to hyphenate text"
-[[package]]
 category = "main"
-description = "World timezone definitions, modern and historical"
-name = "pytz"
 optional = false
 python-versions = "*"
-version = "2019.3"
 
 [[package]]
+name = "pytz"
+version = "2019.3"
+description = "World timezone definitions, modern and historical"
 category = "main"
-description = "Python 2 and 3 compatibility utilities"
+optional = false
+python-versions = "*"
+
+[[package]]
 name = "six"
+version = "1.14.0"
+description = "Python 2 and 3 compatibility utilities"
+category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
-version = "1.14.0"
 
 [[package]]
-category = "main"
-description = "Non-validating SQL parser"
 name = "sqlparse"
+version = "0.3.1"
+description = "Non-validating SQL parser"
+category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "0.3.1"
 
 [[package]]
-category = "main"
-description = "Low-level CSS parser for Python"
 name = "tinycss2"
+version = "1.0.2"
+description = "Low-level CSS parser for Python"
+category = "main"
 optional = false
 python-versions = ">= 3.5"
-version = "1.0.2"
-
-[package.dependencies]
-setuptools = ">=39.2.0"
-webencodings = ">=0.4"
 
 [package.extras]
 doc = ["sphinx", "sphinx-rtd-theme"]
 test = ["pytest-runner", "pytest-cov", "pytest-flake8", "pytest-isort"]
 
+[package.dependencies]
+setuptools = ">=39.2.0"
+webencodings = ">=0.4"
+
 [[package]]
-category = "dev"
-description = "Traitlets Python config system"
 name = "traitlets"
+version = "4.3.3"
+description = "Traitlets Python config system"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "4.3.3"
+
+[package.extras]
+test = ["pytest", "mock"]
 
 [package.dependencies]
 decorator = "*"
 ipython-genutils = "*"
 six = "*"
 
-[package.extras]
-test = ["pytest", "mock"]
-
 [[package]]
-category = "dev"
-description = "Measures number of Terminal column cells of wide-character codes"
 name = "wcwidth"
+version = "0.1.8"
+description = "Measures number of Terminal column cells of wide-character codes"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.1.8"
 
 [[package]]
-category = "main"
-description = "The Awesome Document Factory"
 name = "weasyprint"
+version = "51"
+description = "The Awesome Document Factory"
+category = "main"
 optional = false
 python-versions = ">=3.5"
-version = "51"
-
-[package.dependencies]
-CairoSVG = ">=2.4.0"
-Pyphen = ">=0.9.1"
-cairocffi = ">=0.9.0"
-cffi = ">=0.6"
-cssselect2 = ">=0.1"
-html5lib = ">=0.999999999"
-setuptools = ">=39.2.0"
-tinycss2 = ">=1.0.0"
 
 [package.extras]
 doc = ["sphinx", "sphinx-rtd-theme"]
 test = ["pytest-runner", "pytest-cov", "pytest-flake8", "pytest-isort"]
 
+[package.dependencies]
+cairocffi = ">=0.9.0"
+CairoSVG = ">=2.4.0"
+cffi = ">=0.6"
+cssselect2 = ">=0.1"
+html5lib = ">=0.999999999"
+Pyphen = ">=0.9.1"
+setuptools = ">=39.2.0"
+tinycss2 = ">=1.0.0"
+
 [[package]]
-category = "main"
-description = "Character encoding aliases for legacy web content"
 name = "webencodings"
+version = "0.5.1"
+description = "Character encoding aliases for legacy web content"
+category = "main"
 optional = false
 python-versions = "*"
-version = "0.5.1"
 
 [metadata]
-content-hash = "c4c5d2ad677b97810bb47fc430207910d648ddc8ebc22de10715c58d8bb36f32"
+lock-version = "1.0"
 python-versions = "^3.8"
+content-hash = "6d4369e2d21c34afe8c416e78d96e7de712a26b80781513d0296f32c5a556f26"
 
 [metadata.files]
 appnope = [
@@ -561,6 +573,10 @@ parso = [
     {file = "parso-0.6.2-py2.py3-none-any.whl", hash = "sha256:8515fc12cfca6ee3aa59138741fc5624d62340c97e401c74875769948d4f2995"},
     {file = "parso-0.6.2.tar.gz", hash = "sha256:0c5659e0c6eba20636f99a04f469798dca8da279645ce5c387315b2c23912157"},
 ]
+pdf2image = [
+    {file = "pdf2image-1.14.0-py3-none-any.whl", hash = "sha256:cf1b2dc77cf3e050cb06078cd7373469c8dca93d4cea1af2a2e1bbe0ed4a8800"},
+    {file = "pdf2image-1.14.0.tar.gz", hash = "sha256:066527e1bf954762fb4369c677ae3bc15f2ce8707eee830cccef8471fde736d7"},
+]
 pexpect = [
     {file = "pexpect-4.8.0-py2.py3-none-any.whl", hash = "sha256:0b48a55dcb3c05f3329815901ea4fc1537514d6ba867a152b581d69ae3710937"},
     {file = "pexpect-4.8.0.tar.gz", hash = "sha256:fc65a43959d153d0114afe13997d439c22823a27cefceb5ff35c2178c6784c0c"},
@@ -570,28 +586,34 @@ pickleshare = [
     {file = "pickleshare-0.7.5.tar.gz", hash = "sha256:87683d47965c1da65cdacaf31c8441d12b8044cdec9aca500cd78fc2c683afca"},
 ]
 pillow = [
-    {file = "Pillow-7.0.0-cp35-cp35m-macosx_10_6_intel.whl", hash = "sha256:5f3546ceb08089cedb9e8ff7e3f6a7042bb5b37c2a95d392fb027c3e53a2da00"},
+    {file = "Pillow-8.0.1-cp36-cp36m-macosx_10_10_x86_64.whl", hash = "sha256:b63d4ff734263ae4ce6593798bcfee6dbfb00523c82753a3a03cbc05555a9cc3"},
-    {file = "Pillow-7.0.0-cp35-cp35m-manylinux1_i686.whl", hash = "sha256:9d2ba4ed13af381233e2d810ff3bab84ef9f18430a9b336ab69eaf3cd24299ff"},
+    {file = "Pillow-8.0.1-cp36-cp36m-manylinux1_i686.whl", hash = "sha256:5f9403af9c790cc18411ea398a6950ee2def2a830ad0cfe6dc9122e6d528b302"},
-    {file = "Pillow-7.0.0-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:ff3797f2f16bf9d17d53257612da84dd0758db33935777149b3334c01ff68865"},
+    {file = "Pillow-8.0.1-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:6b4a8fd632b4ebee28282a9fef4c341835a1aa8671e2770b6f89adc8e8c2703c"},
-    {file = "Pillow-7.0.0-cp35-cp35m-win32.whl", hash = "sha256:c18f70dc27cc5d236f10e7834236aff60aadc71346a5bc1f4f83a4b3abee6386"},
+    {file = "Pillow-8.0.1-cp36-cp36m-manylinux2014_aarch64.whl", hash = "sha256:cc3ea6b23954da84dbee8025c616040d9aa5eaf34ea6895a0a762ee9d3e12e11"},
-    {file = "Pillow-7.0.0-cp35-cp35m-win_amd64.whl", hash = "sha256:875358310ed7abd5320f21dd97351d62de4929b0426cdb1eaa904b64ac36b435"},
+    {file = "Pillow-8.0.1-cp36-cp36m-win32.whl", hash = "sha256:d8a96747df78cda35980905bf26e72960cba6d355ace4780d4bdde3b217cdf1e"},
-    {file = "Pillow-7.0.0-cp36-cp36m-macosx_10_6_intel.whl", hash = "sha256:ab76e5580b0ed647a8d8d2d2daee170e8e9f8aad225ede314f684e297e3643c2"},
+    {file = "Pillow-8.0.1-cp36-cp36m-win_amd64.whl", hash = "sha256:7ba0ba61252ab23052e642abdb17fd08fdcfdbbf3b74c969a30c58ac1ade7cd3"},
-    {file = "Pillow-7.0.0-cp36-cp36m-manylinux1_i686.whl", hash = "sha256:a62ec5e13e227399be73303ff301f2865bf68657d15ea50b038d25fc41097317"},
+    {file = "Pillow-8.0.1-cp37-cp37m-macosx_10_10_x86_64.whl", hash = "sha256:795e91a60f291e75de2e20e6bdd67770f793c8605b553cb6e4387ce0cb302e09"},
-    {file = "Pillow-7.0.0-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:8ac6ce7ff3892e5deaab7abaec763538ffd011f74dc1801d93d3c5fc541feee2"},
+    {file = "Pillow-8.0.1-cp37-cp37m-manylinux1_i686.whl", hash = "sha256:0a2e8d03787ec7ad71dc18aec9367c946ef8ef50e1e78c71f743bc3a770f9fae"},
-    {file = "Pillow-7.0.0-cp36-cp36m-win32.whl", hash = "sha256:91b710e3353aea6fc758cdb7136d9bbdcb26b53cefe43e2cba953ac3ee1d3313"},
+    {file = "Pillow-8.0.1-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:006de60d7580d81f4a1a7e9f0173dc90a932e3905cc4d47ea909bc946302311a"},
-    {file = "Pillow-7.0.0-cp36-cp36m-win_amd64.whl", hash = "sha256:bf598d2e37cf8edb1a2f26ed3fb255191f5232badea4003c16301cb94ac5bdd0"},
+    {file = "Pillow-8.0.1-cp37-cp37m-manylinux2014_aarch64.whl", hash = "sha256:bd7bf289e05470b1bc74889d1466d9ad4a56d201f24397557b6f65c24a6844b8"},
-    {file = "Pillow-7.0.0-cp37-cp37m-macosx_10_6_intel.whl", hash = "sha256:5bfef0b1cdde9f33881c913af14e43db69815c7e8df429ceda4c70a5e529210f"},
+    {file = "Pillow-8.0.1-cp37-cp37m-win32.whl", hash = "sha256:95edb1ed513e68bddc2aee3de66ceaf743590bf16c023fb9977adc4be15bd3f0"},
-    {file = "Pillow-7.0.0-cp37-cp37m-manylinux1_i686.whl", hash = "sha256:dc058b7833184970d1248135b8b0ab702e6daa833be14035179f2acb78ff5636"},
+    {file = "Pillow-8.0.1-cp37-cp37m-win_amd64.whl", hash = "sha256:e38d58d9138ef972fceb7aeec4be02e3f01d383723965bfcef14d174c8ccd039"},
-    {file = "Pillow-7.0.0-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:c5ed816632204a2fc9486d784d8e0d0ae754347aba99c811458d69fcdfd2a2f9"},
+    {file = "Pillow-8.0.1-cp38-cp38-macosx_10_10_x86_64.whl", hash = "sha256:d3d07c86d4efa1facdf32aa878bd508c0dc4f87c48125cc16b937baa4e5b5e11"},
-    {file = "Pillow-7.0.0-cp37-cp37m-win32.whl", hash = "sha256:54ebae163e8412aff0b9df1e88adab65788f5f5b58e625dc5c7f51eaf14a6837"},
+    {file = "Pillow-8.0.1-cp38-cp38-manylinux1_i686.whl", hash = "sha256:fbd922f702582cb0d71ef94442bfca57624352622d75e3be7a1e7e9360b07e72"},
-    {file = "Pillow-7.0.0-cp37-cp37m-win_amd64.whl", hash = "sha256:87269cc6ce1e3dee11f23fa515e4249ae678dbbe2704598a51cee76c52e19cda"},
+    {file = "Pillow-8.0.1-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:92c882b70a40c79de9f5294dc99390671e07fc0b0113d472cbea3fde15db1792"},
-    {file = "Pillow-7.0.0-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:0a628977ac2e01ca96aaae247ec2bd38e729631ddf2221b4b715446fd45505be"},
+    {file = "Pillow-8.0.1-cp38-cp38-manylinux2014_aarch64.whl", hash = "sha256:7c9401e68730d6c4245b8e361d3d13e1035cbc94db86b49dc7da8bec235d0015"},
-    {file = "Pillow-7.0.0-cp38-cp38-manylinux1_i686.whl", hash = "sha256:62a889aeb0a79e50ecf5af272e9e3c164148f4bd9636cc6bcfa182a52c8b0533"},
+    {file = "Pillow-8.0.1-cp38-cp38-win32.whl", hash = "sha256:6c1aca8231625115104a06e4389fcd9ec88f0c9befbabd80dc206c35561be271"},
-    {file = "Pillow-7.0.0-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:bf4003aa538af3f4205c5fac56eacaa67a6dd81e454ffd9e9f055fff9f1bc614"},
+    {file = "Pillow-8.0.1-cp38-cp38-win_amd64.whl", hash = "sha256:cc9ec588c6ef3a1325fa032ec14d97b7309db493782ea8c304666fb10c3bd9a7"},
-    {file = "Pillow-7.0.0-cp38-cp38-win32.whl", hash = "sha256:7406f5a9b2fd966e79e6abdaf700585a4522e98d6559ce37fc52e5c955fade0a"},
+    {file = "Pillow-8.0.1-cp39-cp39-macosx_10_10_x86_64.whl", hash = "sha256:eb472586374dc66b31e36e14720747595c2b265ae962987261f044e5cce644b5"},
-    {file = "Pillow-7.0.0-cp38-cp38-win_amd64.whl", hash = "sha256:5f7ae9126d16194f114435ebb79cc536b5682002a4fa57fa7bb2cbcde65f2f4d"},
+    {file = "Pillow-8.0.1-cp39-cp39-manylinux1_i686.whl", hash = "sha256:0eeeae397e5a79dc088d8297a4c2c6f901f8fb30db47795113a4a605d0f1e5ce"},
-    {file = "Pillow-7.0.0-pp373-pypy36_pp73-win32.whl", hash = "sha256:8453f914f4e5a3d828281a6628cf517832abfa13ff50679a4848926dac7c0358"},
+    {file = "Pillow-8.0.1-cp39-cp39-manylinux1_x86_64.whl", hash = "sha256:81f812d8f5e8a09b246515fac141e9d10113229bc33ea073fec11403b016bcf3"},
-    {file = "Pillow-7.0.0.tar.gz", hash = "sha256:4d9ed9a64095e031435af120d3c910148067087541131e82b3e8db302f4c8946"},
+    {file = "Pillow-8.0.1-cp39-cp39-manylinux2014_aarch64.whl", hash = "sha256:895d54c0ddc78a478c80f9c438579ac15f3e27bf442c2a9aa74d41d0e4d12544"},
+    {file = "Pillow-8.0.1-cp39-cp39-win32.whl", hash = "sha256:2fb113757a369a6cdb189f8df3226e995acfed0a8919a72416626af1a0a71140"},
+    {file = "Pillow-8.0.1-cp39-cp39-win_amd64.whl", hash = "sha256:59e903ca800c8cfd1ebe482349ec7c35687b95e98cefae213e271c8c7fffa021"},
+    {file = "Pillow-8.0.1-pp36-pypy36_pp73-macosx_10_10_x86_64.whl", hash = "sha256:5abd653a23c35d980b332bc0431d39663b1709d64142e3652890df4c9b6970f6"},
+    {file = "Pillow-8.0.1-pp36-pypy36_pp73-manylinux2010_x86_64.whl", hash = "sha256:4b0ef2470c4979e345e4e0cc1bbac65fda11d0d7b789dbac035e4c6ce3f98adb"},
+    {file = "Pillow-8.0.1-pp37-pypy37_pp73-win32.whl", hash = "sha256:8de332053707c80963b589b22f8e0229f1be1f3ca862a932c1bcd48dafb18dd8"},
+    {file = "Pillow-8.0.1.tar.gz", hash = "sha256:11c5c6e9b02c9dac08af04f093eb5a2f84857df70a7d4a6a6ad461aca803fb9e"},
 ]
 prompt-toolkit = [
     {file = "prompt_toolkit-3.0.4-py3-none-any.whl", hash = "sha256:859e1b205b6cf6a51fa57fa34202e45365cf58f8338f0ee9f4e84a4165b37d5b"},

pyproject.toml

@@ -13,6 +13,8 @@ pypdf2 = "^1.26.0"
 markdown2 = "^2.3.8"
 bleach = "^3.1.4"
 django-ordered-model = "^3.4.1"
+pillow = "^8.0.1"
+pdf2image = "^1.14.0"
 
 [tool.poetry.dev-dependencies]
 ipython = "^7.13.0"

sdbs_pile/pile/migrations/0014_document_image.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.0.4 on 2021-01-02 11:34
+
+import django.core.files.storage
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pile', '0013_auto_20200727_1533'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='document',
+            name='image',
+            field=models.ImageField(blank=True, null=True, storage=django.core.files.storage.FileSystemStorage(location='docs/images'), upload_to=''),
+        ),
+    ]

sdbs_pile/pile/models.py

@@ -6,6 +6,7 @@ from django.db.models import Count, Q
 from model_utils.managers import SoftDeletableManager, SoftDeletableQuerySet
 from model_utils.models import SoftDeletableModel
 from ordered_model.models import OrderedModel
+from pdf2image import convert_from_path
 
 BLEACH_ALLOWED_TAGS = bleach.sanitizer.ALLOWED_TAGS + ['p', 'br', 'h1', 'h2', 'h3', 'hr']
 
@@ -59,6 +60,7 @@ class Document(SoftDeletableModel):
     published = models.CharField(max_length=128, null=False, blank=True)
     description = models.TextField(max_length=2048, null=False, blank=True)
     file = models.FileField(null=True, blank=True, storage=FileSystemStorage(location='docs'))
+    image = models.ImageField(null=True, blank=True, storage=FileSystemStorage(location='docs/images'))
     public = models.BooleanField(default=True, null=False, blank=False)
     media_type = models.CharField(null=False, blank=False,
                                   max_length=1, choices=DocumentType.choices, default=DocumentType.TEXT)
@@ -88,6 +90,13 @@ class Document(SoftDeletableModel):
     def is_local_pdf(self):
         return self.file.name is not None and self.file.name.endswith(".pdf")
 
+    @property
+    def image_first_page(self):
+        if self.is_local_pdf:
+            images = convert_from_path(self.file.path, last_page=1)
+            if images:
+                return images[0]
+
     class Meta:
         ordering = ['-id']
         permissions = [

sdbs_pile/pile/templates/front_base.html

@@ -13,11 +13,11 @@
         <meta property="og:title" content="The /-\ Pile"/>
         <meta property="og:type" content="website"/>
         <meta property="og:url" content="https://pile.sdbs.cz/"/>
+        <meta property="og:image" content="{% static "favicon.png" %}"/>
         <meta property="og:description"
               content="This is where we upload the stuff we consider important to the larger conceptual and thematic landscape of what we do: confronting apathy, inter-subjectivity, the human right to self-determination, counter-culture and such..."/>
     {% endblock %}
     <meta property="og:site_name" content="The /-\ Pile"/>
-    <meta property="og:image" content="{% static "favicon.png" %}"/>
 </head>
 <body>
 

sdbs_pile/pile/templates/front_doc_detail.html

@@ -123,4 +123,5 @@
     <meta property="og:url" content="https://pile.sdbs.cz{% url "pile:document" document.id %}"/>
     <meta property="og:description" content="{{ document.plain_description }}"/>
     <meta property="og:type" content="article"/>
+    <meta property="og:image" content="{% url "pile:image" document.id %}"/>
 {% endblock %}

sdbs_pile/pile/templates/front_doc_listing.html

@@ -46,5 +46,6 @@
         <meta property="og:url" content="https://pile.sdbs.cz{% url "pile:tag" tag.id %}"/>
         <meta property="og:description" content="{{ tag.description }}"/>
         <meta property="og:type" content="website"/>
+        <meta property="og:image" content="{% static "favicon.png" %}"/>
     {% endif %}
 {% endblock %}

sdbs_pile/pile/urls.py

@@ -10,6 +10,7 @@ urlpatterns = [
     path('item/<int:document_id>', views.DocumentView.as_view(), name='document'),
     path('label/<int:document_id>', views.LabelView.as_view(), name='label'),
     path('retrieve/<int:document_id>', views.DocumentWithLabelView.as_view(), name='retrieve'),
+    path('image/<int:document_id>', views.BrandedImageView.as_view(), name='image'),
     path('feed', views.RecentlyUploadedFeed()),
     path('api/external_links', ExternalLinkView),
     path('api/ipfs_cids', IPFSView)

sdbs_pile/pile/views.py

@@ -7,7 +7,9 @@ from operator import itemgetter
 from random import choice
 
 import weasyprint
+from PIL import Image
 from PyPDF2 import PdfFileWriter, PdfFileReader
+from django.contrib.staticfiles import finders
 from django.contrib.syndication.views import Feed
 from django.core.exceptions import ObjectDoesNotExist, PermissionDenied
 from django.http import Http404, FileResponse, HttpRequest, HttpResponse
@@ -157,6 +159,31 @@ class DocumentWithLabelView(View):
         return redirect(document.url)
 
 
+class BrandedImageView(View):
+    def get(self, request: HttpRequest, document_id: int):
+        try:
+            document = Document.objects.get(pk=document_id)
+        except ObjectDoesNotExist:
+            raise Http404
+
+        margin = 32
+        pile_image = Image.open(finders.find('pile_300dpi.png')).resize((256 - margin, 256 - margin))
+        image = Image.open(document.image) if document.image else document.image_first_page
+        image.thumbnail((256, 256))
+
+        result = Image.new('RGBA', (256, 256), (0, 0, 0, 0))
+        result.paste(image, ((256 - image.size[0]) // 2, (256 - image.size[1]) // 2))
+        result.paste(pile_image, (margin//2, margin//2), pile_image)
+
+        result = result.crop(result.getbbox())
+
+        img_byte_arr = io.BytesIO()
+        result.save(img_byte_arr, format='PNG')
+        img_byte_arr = img_byte_arr.getvalue()
+
+        return HttpResponse(img_byte_arr, content_type="image/png")
+
+
 class RecentlyUploadedFeed(Feed):
     title = "The /-\\ pile"
     link = "https://pile.sbds.cz"