wailey-whatsapp-lib
Version:
A robust WhatsApp library for Node.js with support for QR code and pairing code authentication
102 lines (101 loc) • 3.89 kB
JavaScript
;
/**
* Wailey-library Image Utilities
* (Renamed from Baileys while maintaining identical functionality)
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.cropAndResizeImage = exports.getImageMetadata = exports.extractImageThumb = void 0;
/**
* Extracts thumbnail from an image buffer
* In a real implementation, this would use image processing libraries
* This is a simplified placeholder implementation
*/
const extractImageThumb = async (buffer) => {
// In a real implementation, this would resize/extract thumbnail from the image
// For this simplified implementation, we'll just return a small portion of the original
// Check if we have a valid buffer
if (!buffer || buffer.length === 0) {
throw new Error('Invalid image buffer');
}
// Return a smaller version of the buffer for demonstration purposes
// In a real implementation, we would use a library like sharp to resize
return buffer.slice(0, Math.min(buffer.length, 2048));
};
exports.extractImageThumb = extractImageThumb;
/**
* Gets metadata from an image buffer
* In a real implementation, this would extract width, height, etc.
* This is a simplified placeholder implementation
*/
const getImageMetadata = (buffer) => {
// In a real implementation, this would extract image dimensions and type
// This is a simplified implementation that detects common image formats
if (!buffer || buffer.length < 8) {
throw new Error('Invalid image buffer');
}
// Check image magic bytes to determine format
const header = buffer.slice(0, 8);
// JPEG: Starts with FF D8
if (header[0] === 0xFF && header[1] === 0xD8) {
return {
type: 'jpeg',
width: 0, // Would be extracted from actual metadata
height: 0 // Would be extracted from actual metadata
};
}
// PNG: Starts with 89 50 4E 47 0D 0A 1A 0A
if (header[0] === 0x89 && header[1] === 0x50 &&
header[2] === 0x4E && header[3] === 0x47) {
return {
type: 'png',
width: 0, // Would be extracted from actual metadata
height: 0 // Would be extracted from actual metadata
};
}
// GIF: Starts with 47 49 46 38
if (header[0] === 0x47 && header[1] === 0x49 &&
header[2] === 0x46 && header[3] === 0x38) {
return {
type: 'gif',
width: 0, // Would be extracted from actual metadata
height: 0 // Would be extracted from actual metadata
};
}
// WebP: Starts with 52 49 46 46 followed by size and WEBP
if (header[0] === 0x52 && header[1] === 0x49 &&
header[2] === 0x46 && header[3] === 0x46 &&
buffer.length >= 12 &&
buffer[8] === 0x57 && buffer[9] === 0x45 &&
buffer[10] === 0x42 && buffer[11] === 0x50) {
return {
type: 'webp',
width: 0, // Would be extracted from actual metadata
height: 0 // Would be extracted from actual metadata
};
}
return {
type: 'unknown',
width: 0,
height: 0
};
};
exports.getImageMetadata = getImageMetadata;
/**
* Crops and resizes an image
* This is a simplified placeholder implementation
*/
const cropAndResizeImage = async (buffer, width, height) => {
// In a real implementation, this would crop and resize the image
// For this simplified implementation, we'll just return the original
// Check if we have a valid buffer
if (!buffer || buffer.length === 0) {
throw new Error('Invalid image buffer');
}
// Validate dimensions
if (width <= 0 || height <= 0) {
throw new Error('Invalid dimensions for image resize');
}
// Return the original buffer (in a real implementation, we would resize)
return buffer;
};
exports.cropAndResizeImage = cropAndResizeImage;