Save GIFs Locally

GIFCollector MessagesExtension/Services/DownloadService.swift

@@ -1,19 +1,19 @@
 import Foundation
 import UIKit
 
-class GIFDownloadService {
-    static let shared = GIFDownloadService()
+class DownloadService {
+    static let shared = DownloadService()
     
     private let cache = NSCache<NSString, NSData>()
     private var activeTasks: [URL: URLSessionDataTask] = [:]
     
     private init() {
-        cache.totalCostLimit = 100 * 1024 * 1024 // 100 MB cache limit
+        cache.totalCostLimit = 50 * 1024 * 1024 // 50 MB cache limit
     }
     
     func downloadGIF(from urlString: String, completion: @escaping (Data?, Error?) -> Void) {
         guard let url = URL(string: urlString) else {
-            completion(nil, NSError(domain: "GIFDownloadService", code: 1, userInfo: [NSLocalizedDescriptionKey: "Invalid URL"]))
+            completion(nil, NSError(domain: "DownloadService", code: 1, userInfo: [NSLocalizedDescriptionKey: "Invalid URL"]))
             return
         }
         
@@ -35,7 +35,7 @@ class GIFDownloadService {
             
             guard let self = self, error == nil, let data = data else {
                 DispatchQueue.main.async {
-                    completion(nil, error ?? NSError(domain: "GIFDownloadService", code: 2, userInfo: [NSLocalizedDescriptionKey: "Failed to download GIF"]))
+                    completion(nil, error ?? NSError(domain: "DownloadService", code: 2, userInfo: [NSLocalizedDescriptionKey: "Failed to download GIF"]))
                 }
                 return
             }

GIFCollector MessagesExtension/Services/GIFFileManager.swift

@@ -0,0 +1,132 @@
+import Foundation
+import UIKit
+
+class GIFFileManager {
+    static let shared = GIFFileManager()
+    
+    private init() {
+        createGIFsDirectoryIfNeeded()
+    }
+    
+    // MARK: - File Storage
+    
+    private var documentsDirectory: URL {
+        let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
+        return paths[0]
+    }
+    
+    private var gifsDirectory: URL {
+        return documentsDirectory.appendingPathComponent("SavedGIFs", isDirectory: true)
+    }
+    
+    private func createGIFsDirectoryIfNeeded() {
+        let fileManager = FileManager.default
+        
+        if !fileManager.fileExists(atPath: gifsDirectory.path) {
+            do {
+                try fileManager.createDirectory(at: gifsDirectory, withIntermediateDirectories: true)
+            } catch {
+                print("Error creating GIFs directory: \(error)")
+            }
+        }
+    }
+    
+    func storeGIF(data: Data, fromURL urlString: String) -> String? {
+        // Create a unique filename based on the URL hash and timestamp
+        let urlHash = urlString.hashValue
+        let timestamp = Int(Date().timeIntervalSince1970)
+        let filename = "gif_\(urlHash)_\(timestamp).gif"
+        
+        let fileURL = gifsDirectory.appendingPathComponent(filename)
+        
+        do {
+            try data.write(to: fileURL)
+            return fileURL.path
+        } catch {
+            print("Error saving GIF to disk: \(error)")
+            return nil
+        }
+    }
+    
+    func loadGIFData(from localPath: String) -> Data? {
+        let url = URL(fileURLWithPath: localPath)
+        
+        do {
+            let data = try Data(contentsOf: url)
+            return data
+        } catch {
+            print("Error loading GIF from disk: \(error)")
+            return nil
+        }
+    }
+    
+    func deleteGIF(at localPath: String) -> Bool {
+        let fileManager = FileManager.default
+        
+        do {
+            try fileManager.removeItem(atPath: localPath)
+            return true
+        } catch {
+            print("Error deleting GIF from disk: \(error)")
+            return false
+        }
+    }
+    
+    func fileExists(at localPath: String) -> Bool {
+        return FileManager.default.fileExists(atPath: localPath)
+    }
+    
+    func getAllGIFsSize() -> Int64 {
+        let fileManager = FileManager.default
+        let enumerator = fileManager.enumerator(at: gifsDirectory, includingPropertiesForKeys: [.fileSizeKey])
+        
+        var totalSize: Int64 = 0
+        
+        while let fileURL = enumerator?.nextObject() as? URL {
+            do {
+                let attributes = try fileURL.resourceValues(forKeys: [.fileSizeKey])
+                if let fileSize = attributes.fileSize {
+                    totalSize += Int64(fileSize)
+                }
+            } catch {
+                print("Error calculating file size: \(error)")
+            }
+        }
+        
+        return totalSize
+    }
+    
+    // Clean up old GIFs if storage exceeds 100 MB
+    func performStorageCleanupIfNeeded() {
+        let maxStorageSize: Int64 = 100 * 1024 * 1024 // 100 MB
+        
+        if getAllGIFsSize() > maxStorageSize {
+            cleanupOldGIFs()
+        }
+    }
+    
+    private func cleanupOldGIFs() {
+        let fileManager = FileManager.default
+        
+        do {
+            // Get all files and their creation dates
+            let fileURLs = try fileManager.contentsOfDirectory(at: gifsDirectory, includingPropertiesForKeys: [.creationDateKey])
+            
+            // Sort by creation date
+            let sortedFiles = try fileURLs.sorted {
+                let date1 = try $0.resourceValues(forKeys: [.creationDateKey]).creationDate ?? Date.distantPast
+                let date2 = try $1.resourceValues(forKeys: [.creationDateKey]).creationDate ?? Date.distantPast
+                return date1 < date2
+            }
+            
+            // Delete the oldest 30% of files
+            let filesToDelete = Int(Double(sortedFiles.count) * 0.3)
+            
+            for i in 0..<min(filesToDelete, sortedFiles.count) {
+                try fileManager.removeItem(at: sortedFiles[i])
+            }
+        } catch {
+            print("Error cleaning up old GIFs: \(error)")
+        }
+    }
+}

GIFCollector MessagesExtension/Services/GIFStorageService.swift

@@ -13,14 +13,28 @@ class GIFStorageService {
         }
     }
     
-    func saveGIF(_ gif: GIF) {
+    func saveGIF(data: Data, fromURL urlString: String, completion: @escaping (GIF?) -> Void) {
+        // First store the GIF data to disk
+        guard let localPath = GIFFileManager.shared.storeGIF(data: data, fromURL: urlString) else {
+            completion(nil)
+            return
+        }
+        
+        // Create and save the GIF model
+        let gif = GIF(localFilePath: localPath, originalURL: urlString)
+        
         var savedGIFs = fetchGIFs()
         
-        // Don't save duplicate URLs
-        if !savedGIFs.contains(where: { $0.urlString == gif.urlString }) {
+        // Don't save duplicates of the same URL
+        if !savedGIFs.contains(where: { $0.originalURL == urlString }) {
             savedGIFs.append(gif)
             saveToUserDefaults(gifs: savedGIFs)
         }
+        
+        // Perform cleanup if needed
+        GIFFileManager.shared.performStorageCleanupIfNeeded()
+        
+        completion(gif)
     }
     
     func fetchGIFs() -> [GIF] {
@@ -29,16 +43,38 @@ class GIFStorageService {
             return []
         }
         
-        return gifs.sorted(by: { $0.createdAt > $1.createdAt })
+        // Filter out any GIFs whose files no longer exist
+        let validGIFs = gifs.filter { GIFFileManager.shared.fileExists(at: $0.localFilePath) }
+        
+        // If we filtered any out, save the updated list
+        if validGIFs.count != gifs.count {
+            saveToUserDefaults(gifs: validGIFs)
+        }
+        
+        return validGIFs.sorted(by: { $0.createdAt > $1.createdAt })
     }
     
     func deleteGIF(with id: UUID) {
         var savedGIFs = fetchGIFs()
-        savedGIFs.removeAll(where: { $0.id == id })
-        saveToUserDefaults(gifs: savedGIFs)
+        
+        // Find the GIF to delete
+        if let gifToDelete = savedGIFs.first(where: { $0.id == id }) {
+            // Delete the file from storage
+            GIFFileManager.shared.deleteGIF(at: gifToDelete.localFilePath)
+            
+            // Remove from the list
+            savedGIFs.removeAll(where: { $0.id == id })
+            saveToUserDefaults(gifs: savedGIFs)
+        }
     }
     
     func clearAllGIFs() {
+        // Delete all GIF files
+        fetchGIFs().forEach { gif in
+            GIFFileManager.shared.deleteGIF(at: gif.localFilePath)
+        }
+        
+        // Clear the list
         saveToUserDefaults(gifs: [])
     }
     
@@ -46,4 +82,8 @@ class GIFStorageService {
         guard let data = try? JSONEncoder().encode(gifs) else { return }
         userDefaults?.set(data, forKey: savedGIFsKey)
     }
+    
+    func getGIFData(for gif: GIF) -> Data? {
+        return GIFFileManager.shared.loadGIFData(from: gif.localFilePath)
+    }
 }