8 files changed, 62 insertions, 0 deletions
diff --git a/ignis/__init__.py b/ignis/__init__.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/ignis/__init__.py
diff --git a/ignis/admin.py b/ignis/admin.py
new file mode 100644
index 00000000..8c38f3f3
--- /dev/null
+++ b/ignis/admin.py
@@ -0,0 +1,3 @@
+from django.contrib import admin
+
+# Register your models here.
diff --git a/ignis/apps.py b/ignis/apps.py
new file mode 100644
index 00000000..8c2eea77
--- /dev/null
+++ b/ignis/apps.py
@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class IgnisConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'ignis'
diff --git a/ignis/migrations/__init__.py b/ignis/migrations/__init__.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/ignis/migrations/__init__.py
diff --git a/ignis/models.py b/ignis/models.py
new file mode 100644
index 00000000..71a83623
--- /dev/null
+++ b/ignis/models.py
@@ -0,0 +1,3 @@
+from django.db import models
+
+# Create your models here.
diff --git a/ignis/tests.py b/ignis/tests.py
new file mode 100644
index 00000000..7ce503c2
--- /dev/null
+++ b/ignis/tests.py
@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.
diff --git a/ignis/urls.py b/ignis/urls.py
new file mode 100644
index 00000000..4e931c4d
--- /dev/null
+++ b/ignis/urls.py
@@ -0,0 +1,8 @@
+from django.urls import path
+from . import views
+
+app_name = 'ignis'
+urlpatterns = [
+    path('tex/', views.tex, name='tex'),
+    path('post_image/<int:post_id>/', views.post_image, name='post_image'),
+]
diff --git a/ignis/views.py b/ignis/views.py
new file mode 100644
index 00000000..ffbce848
--- /dev/null
+++ b/ignis/views.py
@@ -0,0 +1,39 @@
+from django.shortcuts import render
+from PIL import Image
+from io import BytesIO
+from django.http import HttpResponse
+from django.views.decorators.csrf import csrf_exempt
+import base64
+from blog.models import Post
+
+# Create your views here.
+@csrf_exempt
+def tex(request):
+    # get expression from request query
+    expression = request.GET.get('expr').replace('"', '').strip()
+    if not expression:
+        return HttpResponse('No expression provided!', status=400)
+
+    import requests
+
+    image = requests.get('https://latex.codecogs.com/png.image?%5Cinline%20%5Clarge%20%5Cdpi%7B300%7D%5Cbg%7Btransparent%7D' + expression).content
+
+    # Image is a transparent GIF with black text. Invert the colors.
+    image = Image.open(BytesIO(image))
+    image = image.convert('RGBA')
+    image = Image.eval(image, lambda x: 255 - x)
+
+    # Convert back to gif and return
+    output = BytesIO()
+    image.save(output, format='GIF')
+    return HttpResponse(output.getvalue(), content_type='image/gif')
+
+@csrf_exempt
+def post_image(request, post_id):
+    pi = Post.objects.get(id=post_id).post_image
+    if not pi:
+        return HttpResponse('No image found!', status=404)
+    
+    # convert base64 data src to image
+    image = base64.b64decode(pi.split(',')[1])
+    return HttpResponse(image, content_type='image/png')