Ilyas Hallak
b9f8e11782
Refactorings: - Extract HTMLImageEmbedder and HTMLImageExtractor utilities - Create UseCases for cached data access (GetCachedBookmarksUseCase, GetCachedArticleUseCase) - Create CreateAnnotationUseCase to remove API dependency from ViewModel - Simplify CachedAsyncImage by extracting helper methods - Fix Kingfisher API compatibility (Source types, Result handling) - Add documentation to OfflineCacheSyncUseCase - Remove unused TestView from production code Enforces Clean Architecture: - ViewModels now only use UseCases, no direct Repository or API access - All data layer access goes through Domain layer
64 lines
2.2 KiB
Swift
64 lines
2.2 KiB
Swift
//
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// HTMLImageExtractor.swift
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// readeck
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//
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// Created by Ilyas Hallak on 30.11.25.
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//
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import Foundation
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/// Utility for extracting image URLs from HTML content
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struct HTMLImageExtractor {
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/// Extracts all image URLs from HTML using regex
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/// - Parameter html: The HTML string to parse
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/// - Returns: Array of absolute image URLs (http/https only)
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func extract(from html: String) -> [String] {
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var imageURLs: [String] = []
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// Simple regex pattern for img tags
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let pattern = #"<img[^>]+src="([^"]+)""#
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guard let regex = try? NSRegularExpression(pattern: pattern, options: []) else {
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return imageURLs
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}
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let nsString = html as NSString
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let results = regex.matches(in: html, options: [], range: NSRange(location: 0, length: nsString.length))
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for result in results {
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if result.numberOfRanges >= 2 {
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let urlRange = result.range(at: 1)
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if let url = nsString.substring(with: urlRange) as String?,
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url.hasPrefix("http") { // Only include absolute URLs
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imageURLs.append(url)
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}
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}
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}
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Logger.sync.debug("Extracted \(imageURLs.count) image URLs from HTML")
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return imageURLs
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}
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/// Extracts image URLs from HTML and optionally prepends hero/thumbnail image
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/// - Parameters:
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/// - html: The HTML string to parse
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/// - heroImageURL: Optional hero image URL to prepend
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/// - thumbnailURL: Optional thumbnail URL to prepend if no hero image
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/// - Returns: Array of image URLs with hero/thumbnail first if provided
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func extract(from html: String, heroImageURL: String? = nil, thumbnailURL: String? = nil) -> [String] {
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var imageURLs = extract(from: html)
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// Prepend hero or thumbnail image if available
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if let heroURL = heroImageURL {
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imageURLs.insert(heroURL, at: 0)
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Logger.sync.debug("Added hero image: \(heroURL)")
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} else if let thumbURL = thumbnailURL {
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imageURLs.insert(thumbURL, at: 0)
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Logger.sync.debug("Added thumbnail image: \(thumbURL)")
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}
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return imageURLs
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}
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}
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