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553 lines
21 KiB
Swift
553 lines
21 KiB
Swift
// SOURCE: https://github.com/bhagat-techind/flutter_sharing_intent/blob/main/example/ios/Share%20Extension/FSIShareViewController.swift
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// FSIShareViewController.swift
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// Merged, optimized controller: uses RSI architecture with all FSI features preserved
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// Uses model name `SharingFile` (same fields as SharedMediaFile) where `value` = path
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import AVFoundation
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import MobileCoreServices
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import Social
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import UIKit
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import UniformTypeIdentifiers
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public let kSchemePrefix = "SharingMedia"
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public let kUserDefaultsKey = "SharingKey"
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public let kUserDefaultsMessageKey = "SharingMessageKey"
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public let kAppGroupIdKey = "AppGroupId"
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public let kAppChannel = "flutter_sharing_intent"
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@available(swift, introduced: 5.0)
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open class FSIShareViewController: SLComposeServiceViewController {
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// MARK: - Config
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private(set) var hostAppBundleIdentifier: String = ""
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private(set) var appGroupId: String = ""
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// Results
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private var sharedMedia: [SharingFile] = []
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// Debug
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private let debugLogs = false
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// MARK: - Lifecycle
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open override func viewDidLoad() {
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super.viewDidLoad()
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loadIds()
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}
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open override func isContentValid() -> Bool {
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return true
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}
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open override func didSelectPost() {
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if self.sharedMedia.isEmpty {
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if let text = self.contentText, !text.isEmpty {
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self.sharedMedia.append(
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SharingFile(value: text, thumbnail: nil, duration: nil, type: .text)
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)
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self.saveAndRedirect(message: text)
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return
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}
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self.completeAndExit()
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} else {
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self.saveAndRedirect()
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}
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}
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open override func viewDidAppear(_ animated: Bool) {
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super.viewDidAppear(animated)
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// Process attachments automatically on appear like original FSI
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processAttachments()
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}
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// MARK: - Load Ids
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private func loadIds() {
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let shareExtId = Bundle.main.bundleIdentifier ?? ""
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if let idx = shareExtId.lastIndex(of: ".") {
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hostAppBundleIdentifier = String(shareExtId[..<idx])
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} else {
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hostAppBundleIdentifier = shareExtId
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}
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let custom = Bundle.main.object(forInfoDictionaryKey: kAppGroupIdKey) as? String
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appGroupId = custom ?? "group.\(hostAppBundleIdentifier)"
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log("loaded host=\(hostAppBundleIdentifier) group=\(appGroupId)")
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}
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// MARK: - Attachment processing (clean RSI style, preserve FSI features)
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private func processAttachments() {
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guard let content = extensionContext?.inputItems.first as? NSExtensionItem else {
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completeAndExit()
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return
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}
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guard let attachments = content.attachments, !attachments.isEmpty else {
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completeAndExit()
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return
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}
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// Use DispatchGroup to wait for async loads
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let group = DispatchGroup()
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for (index, provider) in attachments.enumerated() {
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group.enter()
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// Try all SharedMediaType options similar to RSI but preserve explicit FSI order
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if provider.isImage {
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provider.loadItem(forTypeIdentifier: UType.image, options: nil) { [weak self] data, error in
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defer { group.leave() }
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guard let self = self, error == nil else { self?.dismissWithError(); return }
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self.handleImageItem(data: data, index: index, total: attachments.count)
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}
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continue
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}
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if provider.isMovie {
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provider.loadItem(forTypeIdentifier: UType.movie, options: nil) { [weak self] data, error in
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defer { group.leave() }
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guard let self = self, error == nil else { self?.dismissWithError(); return }
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self.handleVideoItem(data: data, index: index, total: attachments.count)
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}
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continue
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}
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if provider.isFile {
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provider.loadItem(forTypeIdentifier: UType.fileURL, options: nil) { [weak self] data, error in
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defer { group.leave() }
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guard let self = self, error == nil else { self?.dismissWithError(); return }
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self.handleFileItem(data: data, index: index, total: attachments.count)
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}
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continue
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}
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if provider.isURL {
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provider.loadItem(forTypeIdentifier: UType.url, options: nil) { [weak self] data, error in
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defer { group.leave() }
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guard let self = self, error == nil else { self?.dismissWithError(); return }
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self.handleUrlItem(data: data, index: index, total: attachments.count)
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}
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continue
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}
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if provider.isText {
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let id = provider.hasItemConformingToTypeIdentifier(UType.plainText)
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? UType.plainText
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: UType.text
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provider.loadItem(forTypeIdentifier: id, options: nil) { [weak self] data, error in
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defer { group.leave() }
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guard let self = self, error == nil else { self?.dismissWithError(); return }
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self.handleTextItem(data: data, index: index, total: attachments.count)
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}
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continue
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}
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if provider.isData {
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provider.loadItem(forTypeIdentifier: UType.data, options: nil) { [weak self] data, error in
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defer { group.leave() }
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guard let self = self, error == nil else { self?.dismissWithError(); return }
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self.handleFileItem(data: data, index: index, total: attachments.count)
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}
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continue
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}
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if provider.isItem {
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provider.loadItem(forTypeIdentifier: UType.item, options: nil) { [weak self] data, error in
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defer { group.leave() }
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guard let self = self, error == nil else { self?.dismissWithError(); return }
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self.handleFileItem(data: data, index: index, total: attachments.count)
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}
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continue
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}
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log("Unknown provider type: \(provider.registeredTypeIdentifiers)")
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// Unknown type: just leave
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group.leave()
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}
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group.notify(queue: .main) { [weak self] in
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guard let self = self else { return }
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// if we have media -> media, else fallback to complete
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if !self.sharedMedia.isEmpty {
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self.saveAndRedirect()
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} else {
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print("FSIShare: No shared media → stopping.")
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self.completeAndExit()
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}
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}
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}
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// MARK: - Individual handlers (preserve FSI behavior)
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private func handleTextItem(data: NSSecureCoding?, index: Int, total: Int) {
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if let s = data as? String {
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sharedMedia.append(SharingFile(value: s, thumbnail: nil, duration: nil, type: .text))
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} else if let url = data as? URL {
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sharedMedia.append(SharingFile(value: url.absoluteString, thumbnail: nil, duration: nil, type: .url))
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}
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}
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private func handleUrlItem(data: NSSecureCoding?, index: Int, total: Int) {
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if let url = data as? URL {
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sharedMedia.append(SharingFile(value: url.absoluteString, thumbnail: nil, duration: nil, type: .url))
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} else if let s = data as? String {
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sharedMedia.append(SharingFile(value: s, thumbnail: nil, duration: nil, type: .text))
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}
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}
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private func handleImageItem(data: NSSecureCoding?, index: Int, total: Int) {
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// data can be URL, UIImage, or Data
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if let url = data as? URL {
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let filename = getFileName(from: url, type: .image)
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if let dst = containerURL()?.appendingPathComponent(filename) {
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if copyFile(at: url, to: dst) {
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sharedMedia.append(SharingFile(value: dst.absoluteString, mimeType: url.mimeType(), thumbnail: nil, duration: nil, type: .image))
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}
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}
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} else if let img = data as? UIImage {
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if let saved = writeTempImage(img) {
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sharedMedia.append(saved)
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}
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} else if let raw = data as? Data, let img = UIImage(data: raw) {
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if let saved = writeTempImage(img) {
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sharedMedia.append(saved)
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}
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}
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}
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private func handleVideoItem(data: NSSecureCoding?, index: Int, total: Int) {
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if let url = data as? URL {
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let filename = getFileName(from: url, type: .video)
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if let dst = containerURL()?.appendingPathComponent(filename) {
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if copyFile(at: url, to: dst) {
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if let m = getSharedMediaFile(forVideo: dst) {
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sharedMedia.append(m)
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}
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}
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}
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}
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}
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private func handleFileItem(data: NSSecureCoding?, index: Int, total: Int) {
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if let url = data as? URL {
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let filename = getFileName(from: url, type: .file)
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if let dst = containerURL()?.appendingPathComponent(filename) {
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if copyFile(at: url, to: dst) {
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sharedMedia.append(SharingFile(value: dst.absoluteString, mimeType: url.mimeType(), thumbnail: nil, duration: nil, type: .file))
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}
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}
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}
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else if let raw = data as? Data {
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let filename = "File_\(UUID().uuidString)"
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if let dst = containerURL()?.appendingPathComponent(filename) {
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do {
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try raw.write(to: dst)
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sharedMedia.append(SharingFile(value: dst.absoluteString, mimeType: "application/octet-stream", thumbnail: nil, duration: nil, type: .file))
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} catch {}
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}
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}
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}
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// MARK: - Helpers: write temp image
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private func writeTempImage(_ image: UIImage) -> SharingFile? {
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guard let container = containerURL() else { return nil }
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let tempName = "TempImage_\(UUID().uuidString).png"
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let dst = container.appendingPathComponent(tempName)
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do {
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if let d = image.pngData() {
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try d.write(to: dst)
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let decoded = dst.absoluteString.removingPercentEncoding ?? dst.absoluteString
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return SharingFile(value: decoded, mimeType: "image/png", thumbnail: nil, duration: nil, type: .image)
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}
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} catch {
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log("writeTempImage error: \(error)")
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}
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return nil
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}
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private func saveAndRedirect(message: String? = nil) {
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let ud = UserDefaults(suiteName: appGroupId)
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if !sharedMedia.isEmpty {
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if let data = try? JSONEncoder().encode(sharedMedia) {
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ud?.set(data, forKey: kUserDefaultsKey)
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}
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}
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ud?.set(message, forKey: kUserDefaultsMessageKey)
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ud?.synchronize()
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redirectToHostApp()
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}
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private func redirectToHostApp() {
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// kept for compatibility (RSI style)
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loadIds()
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// let raw = "\(kSchemePrefix)-\(hostAppBundleIdentifier):share"
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let raw = "\(kSchemePrefix)-\(hostAppBundleIdentifier)://dataUrl=\(kUserDefaultsKey)"
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guard let url = URL(string: raw.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) ?? raw) else { completeAndExit(); return }
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var responder: UIResponder? = self
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if #available(iOS 18.0, *) {
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while responder != nil {
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if let app = responder as? UIApplication { app.open(url, options: [:], completionHandler: nil) }
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responder = responder?.next
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}
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} else {
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let sel = sel_registerName("openURL:")
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while responder != nil {
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if responder?.responds(to: sel) ?? false { _ = responder?.perform(sel, with: url) }
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responder = responder?.next
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}
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}
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extensionContext?.completeRequest(returningItems: [], completionHandler: nil)
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}
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// MARK: - File / thumbnail / metadata helpers
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func getExtension(from url: URL, type: SharingFileType) -> String {
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let parts = url.lastPathComponent.components(separatedBy: ".")
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var ex: String? = nil
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if parts.count > 1 { ex = parts.last }
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if ex == nil {
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switch type {
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case .image: ex = "png"
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case .video: ex = "mp4"
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case .file: ex = "txt"
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case .text: ex = "txt"
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case .url: ex = "txt"
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}
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}
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return ex ?? "bin"
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}
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func getFileName(from url: URL, type: SharingFileType) -> String {
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var name = url.lastPathComponent
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if name.isEmpty { name = UUID().uuidString + "." + getExtension(from: url, type: type) }
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return name
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}
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func copyFile(at srcURL: URL, to dstURL: URL) -> Bool {
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do {
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if FileManager.default.fileExists(atPath: dstURL.path) { try FileManager.default.removeItem(at: dstURL) }
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try FileManager.default.copyItem(at: srcURL, to: dstURL)
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return true
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} catch {
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log("copyFile error: \(error)")
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return false
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}
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}
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private func getSharedMediaFile(forVideo: URL) -> SharingFile? {
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let asset = AVAsset(url: forVideo)
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let duration = (CMTimeGetSeconds(asset.duration) * 1000).rounded()
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let thumbnailPath = getThumbnailPath(for: forVideo)
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if FileManager.default.fileExists(atPath: thumbnailPath.path) {
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return SharingFile(value: forVideo.absoluteString, mimeType: forVideo.mimeType(), thumbnail: thumbnailPath.absoluteString, duration: Int(duration), type: .video)
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}
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let gen = AVAssetImageGenerator(asset: asset)
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gen.appliesPreferredTrackTransform = true
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gen.maximumSize = CGSize(width: 360, height: 360)
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// Use first second or zero
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let time = CMTime(seconds: min(1.0, CMTimeGetSeconds(asset.duration)), preferredTimescale: 600)
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do {
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let cg = try gen.copyCGImage(at: time, actualTime: nil)
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if let data = UIImage(cgImage: cg).jpegData(compressionQuality: 0.8) {
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try data.write(to: thumbnailPath)
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return SharingFile(value: forVideo.absoluteString, mimeType: forVideo.mimeType(), thumbnail: thumbnailPath.absoluteString, duration: Int(duration), type: .video)
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}
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} catch {
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log("getSharedMediaFile thumbnail error: \(error)")
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}
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// fallback
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return SharingFile(value: forVideo.absoluteString, mimeType: forVideo.mimeType(), thumbnail: nil, duration: Int(duration), type: .video)
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}
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private func getThumbnailPath(for url: URL) -> URL {
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guard let container = containerURL() else { fatalError("App group not configured or missing") }
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let fileName = Data(url.lastPathComponent.utf8).base64EncodedString().replacingOccurrences(of: "=", with: "")
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return container.appendingPathComponent("\(fileName).jpg")
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}
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private func containerURL() -> URL? {
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FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: appGroupId)
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}
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private func completeAndExit() {
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extensionContext?.completeRequest(returningItems: [], completionHandler: nil)
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}
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private func dismissWithError() {
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log("[ERROR] Error loading data!")
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let alert = UIAlertController(title: "Error", message: "Error loading data", preferredStyle: .alert)
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alert.addAction(UIAlertAction(title: "OK", style: .cancel) { _ in self.dismiss(animated: true, completion: nil) })
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present(alert, animated: true, completion: nil)
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extensionContext?.completeRequest(returningItems: [], completionHandler: nil)
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}
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private func writeTempFile(_ image: UIImage, to dstURL: URL) -> Bool {
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do {
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if FileManager.default.fileExists(atPath: dstURL.path) { try FileManager.default.removeItem(at: dstURL) }
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let pngData = image.pngData()
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try pngData?.write(to: dstURL)
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return true
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} catch (let error) {
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log("writeTempFile error: \(error)")
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return false
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}
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}
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private func saveToUserDefaults(data: [SharingFile]) {
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let ud = UserDefaults(suiteName: appGroupId)
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if let enc = try? JSONEncoder().encode(data) { ud?.set(enc, forKey: kUserDefaultsKey); ud?.synchronize() }
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}
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// MARK: - Logging
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private func log(_ s: String) { if debugLogs { print("[FSIShareVC] \(s)") } }
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}
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// MARK: - Extensions
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extension URL {
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func mimeType() -> String {
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if #available(iOS 14.0, *) {
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if let ut = UTType(filenameExtension: self.pathExtension), let m = ut.preferredMIMEType { return m }
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} else {
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if let uti = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, self.pathExtension as NSString, nil)?.takeRetainedValue() {
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if let mimetype = UTTypeCopyPreferredTagWithClass(uti, kUTTagClassMIMEType)?.takeRetainedValue() { return mimetype as String }
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}
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}
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return "application/octet-stream"
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}
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}
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extension NSItemProvider {
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var isImage: Bool { return hasItemConformingToTypeIdentifier(UType.image) }
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var isMovie: Bool { return hasItemConformingToTypeIdentifier(UType.movie) }
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var isText: Bool {
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hasItemConformingToTypeIdentifier(UType.plainText) || hasItemConformingToTypeIdentifier(UType.text)
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}
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var isURL: Bool { return hasItemConformingToTypeIdentifier(UType.url) }
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var isFile: Bool { return hasItemConformingToTypeIdentifier(UType.fileURL) }
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var isData:Bool { return hasItemConformingToTypeIdentifier(UType.data) }
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var isItem: Bool { hasItemConformingToTypeIdentifier(UType.item) }
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}
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extension Array {
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subscript(safe index: UInt) -> Element? { return Int(index) < count ? self[Int(index)] : nil }
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}
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class SharingFile: Codable {
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var value: String
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var mimeType: String?
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var thumbnail: String?; // video thumbnail
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var duration: Int?; // video duration in milliseconds
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var type: SharingFileType;
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var message: String? // post message
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enum CodingKeys: String, CodingKey {
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case value
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case mimeType
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case thumbnail
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case duration
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case type
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case message
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}
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init(value: String, mimeType: String? = nil, thumbnail: String?, duration: Int?,
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type: SharingFileType, message: String?=nil) {
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self.value = value
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self.mimeType = mimeType
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self.thumbnail = thumbnail
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self.duration = duration
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self.type = type
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self.message = message
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}
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// Debug method to print out SharedMediaFile details in the console
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func toString() {
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print("[SharingFile] \n\tvalue: \(self.value)\n\tthumbnail: \(self.thumbnail ?? "--" )\n\tduration: \(self.duration ?? 0)\n\ttype: \(self.type)\n\tmimeType: \(String(describing: self.mimeType))\n\tmessage: \(String(describing: self.message))")
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}
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}
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enum SharingFileType: Int, Codable {
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case text
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case url
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case image
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case video
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case file
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}
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|
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// Unified UTType → works on iOS 11–18
|
||
enum UType {
|
||
static var image: String {
|
||
if #available(iOS 14.0, *) {
|
||
return UTType.image.identifier
|
||
} else {
|
||
return kUTTypeImage as String // old API
|
||
}
|
||
}
|
||
|
||
static var movie: String {
|
||
if #available(iOS 14.0, *) {
|
||
return UTType.movie.identifier
|
||
} else {
|
||
return kUTTypeMovie as String
|
||
}
|
||
}
|
||
|
||
|
||
static var url: String {
|
||
if #available(iOS 14.0, *) {
|
||
return UTType.url.identifier
|
||
} else {
|
||
return kUTTypeURL as String
|
||
}
|
||
}
|
||
|
||
static var fileURL: String {
|
||
if #available(iOS 14.0, *) {
|
||
return UTType.fileURL.identifier
|
||
} else {
|
||
return kUTTypeFileURL as String
|
||
}
|
||
}
|
||
|
||
static var text: String {
|
||
if #available(iOS 14.0, *) {
|
||
return UTType.text.identifier
|
||
} else {
|
||
return kUTTypeText as String
|
||
}
|
||
}
|
||
|
||
static var plainText: String {
|
||
if #available(iOS 14.0, *) {
|
||
return UTType.plainText.identifier
|
||
} else {
|
||
return kUTTypePlainText as String
|
||
}
|
||
}
|
||
|
||
static var data: String {
|
||
if #available(iOS 14.0, *) {
|
||
return UTType.data.identifier
|
||
} else {
|
||
return kUTTypeData as String
|
||
}
|
||
}
|
||
|
||
static var item: String {
|
||
if #available(iOS 14.0, *) {
|
||
return UTType.item.identifier
|
||
} else {
|
||
return kUTTypeItem as String
|
||
}
|
||
}
|
||
}
|