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Add email templates for user notifications and account management
- Created a base email template (base.html) for consistent styling across all emails. - Added moderation approval email template (moderation_approved.html) to notify users of approved submissions. - Added moderation rejection email template (moderation_rejected.html) to inform users of required changes for their submissions. - Created password reset email template (password_reset.html) for users requesting to reset their passwords. - Developed a welcome email template (welcome.html) to greet new users and provide account details and tips for using ThrillWiki.
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pacnpal
195
django/apps/media/validators.py
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195
django/apps/media/validators.py
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"""
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Validators for image uploads.
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"""
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import magic
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from django.core.exceptions import ValidationError
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from django.core.files.uploadedfile import InMemoryUploadedFile, TemporaryUploadedFile
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from PIL import Image
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from typing import Optional
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# Allowed file types
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ALLOWED_MIME_TYPES = [
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'image/jpeg',
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'image/jpg',
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'image/png',
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'image/webp',
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'image/gif',
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]
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ALLOWED_EXTENSIONS = ['.jpg', '.jpeg', '.png', '.webp', '.gif']
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# Size limits (in bytes)
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MAX_FILE_SIZE = 10 * 1024 * 1024 # 10 MB
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MIN_FILE_SIZE = 1024 # 1 KB
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# Dimension limits
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MIN_WIDTH = 100
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MIN_HEIGHT = 100
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MAX_WIDTH = 8000
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MAX_HEIGHT = 8000
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# Aspect ratio limits (for specific photo types)
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ASPECT_RATIO_LIMITS = {
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'banner': {'min': 2.0, 'max': 4.0}, # Wide banners
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'logo': {'min': 0.5, 'max': 2.0}, # Square-ish logos
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}
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def validate_image_file_type(file: InMemoryUploadedFile | TemporaryUploadedFile) -> None:
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"""
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Validate that the uploaded file is an allowed image type.
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Uses python-magic to detect actual file type, not just extension.
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Args:
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file: The uploaded file object
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Raises:
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ValidationError: If file type is not allowed
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"""
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# Check file extension
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file_ext = None
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if hasattr(file, 'name') and file.name:
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file_ext = '.' + file.name.split('.')[-1].lower()
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if file_ext not in ALLOWED_EXTENSIONS:
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raise ValidationError(
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f"File extension {file_ext} not allowed. "
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f"Allowed extensions: {', '.join(ALLOWED_EXTENSIONS)}"
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)
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# Check MIME type from content type
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if hasattr(file, 'content_type'):
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if file.content_type not in ALLOWED_MIME_TYPES:
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raise ValidationError(
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f"File type {file.content_type} not allowed. "
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f"Allowed types: {', '.join(ALLOWED_MIME_TYPES)}"
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)
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# Verify actual file content using python-magic
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try:
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file.seek(0)
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mime = magic.from_buffer(file.read(2048), mime=True)
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file.seek(0)
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if mime not in ALLOWED_MIME_TYPES:
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raise ValidationError(
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f"File content type {mime} does not match allowed types. "
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"File may be corrupted or incorrectly labeled."
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)
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except Exception as e:
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# If magic fails, we already validated content_type above
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pass
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def validate_image_file_size(file: InMemoryUploadedFile | TemporaryUploadedFile) -> None:
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"""
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Validate that the file size is within allowed limits.
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Args:
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file: The uploaded file object
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Raises:
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ValidationError: If file size is not within limits
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"""
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file_size = file.size
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if file_size < MIN_FILE_SIZE:
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raise ValidationError(
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f"File size is too small. Minimum: {MIN_FILE_SIZE / 1024:.0f} KB"
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)
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if file_size > MAX_FILE_SIZE:
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raise ValidationError(
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f"File size is too large. Maximum: {MAX_FILE_SIZE / (1024 * 1024):.0f} MB"
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)
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def validate_image_dimensions(
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file: InMemoryUploadedFile | TemporaryUploadedFile,
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photo_type: Optional[str] = None
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) -> None:
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"""
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Validate image dimensions and aspect ratio.
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Args:
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file: The uploaded file object
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photo_type: Optional photo type for specific validation
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Raises:
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ValidationError: If dimensions are not within limits
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"""
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try:
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file.seek(0)
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image = Image.open(file)
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width, height = image.size
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file.seek(0)
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except Exception as e:
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raise ValidationError(f"Could not read image dimensions: {str(e)}")
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# Check minimum dimensions
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if width < MIN_WIDTH or height < MIN_HEIGHT:
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raise ValidationError(
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f"Image dimensions too small. Minimum: {MIN_WIDTH}x{MIN_HEIGHT}px, "
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f"got: {width}x{height}px"
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)
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# Check maximum dimensions
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if width > MAX_WIDTH or height > MAX_HEIGHT:
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raise ValidationError(
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f"Image dimensions too large. Maximum: {MAX_WIDTH}x{MAX_HEIGHT}px, "
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f"got: {width}x{height}px"
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)
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# Check aspect ratio for specific photo types
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if photo_type and photo_type in ASPECT_RATIO_LIMITS:
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aspect_ratio = width / height
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limits = ASPECT_RATIO_LIMITS[photo_type]
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if aspect_ratio < limits['min'] or aspect_ratio > limits['max']:
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raise ValidationError(
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f"Invalid aspect ratio for {photo_type}. "
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f"Expected ratio between {limits['min']:.2f} and {limits['max']:.2f}, "
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f"got: {aspect_ratio:.2f}"
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)
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def validate_image(
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file: InMemoryUploadedFile | TemporaryUploadedFile,
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photo_type: Optional[str] = None
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) -> None:
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"""
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Run all image validations.
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Args:
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file: The uploaded file object
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photo_type: Optional photo type for specific validation
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Raises:
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ValidationError: If any validation fails
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"""
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validate_image_file_type(file)
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validate_image_file_size(file)
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validate_image_dimensions(file, photo_type)
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def validate_image_content_safety(file: InMemoryUploadedFile | TemporaryUploadedFile) -> None:
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"""
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Placeholder for content safety validation.
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This could integrate with services like:
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- AWS Rekognition
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- Google Cloud Vision
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- Azure Content Moderator
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For now, this is a no-op but provides extension point.
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Args:
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file: The uploaded file object
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Raises:
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ValidationError: If content is deemed unsafe
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"""
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# TODO: Integrate with content moderation API
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pass
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