feat(mobile): share intent (#4599)

* feat(mobile): share intent

* feat(ios): share content

* feat(share): fix kUTType* deprecation

* feat(share): fix result of call to 'openURL' is unused

* fix screenshot copy rewrite issue

* fix AndroidManifest.xml

* fix(iOS): app not showing in share list

* address comment

ios/App/ShareViewController/ShareViewController.swift

@@ -0,0 +1,201 @@
+//
+//  ShareViewController.swift
+//  ShareViewController
+//
+//  Created by leizhe on 2022/3/17.
+//
+
+
+import MobileCoreServices
+import Social
+import UIKit
+
+class ShareItem {
+    public var title: String?
+    public var type: String?
+    public var url: String?
+}
+
+class ShareViewController: UIViewController {
+    
+    private var shareItems: [ShareItem] = []
+    
+    var groupContainerUrl: URL? {
+        return FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.com.logseq.logseq")
+    }
+    
+    override public func viewDidAppear(_ animated: Bool) {
+       super.viewDidAppear(animated)
+       self.extensionContext!.completeRequest(returningItems: [], completionHandler: nil)
+    }
+    
+    private func sendData() {
+        let queryItems = shareItems.map {
+            [
+                URLQueryItem(
+                    name: "title",
+                    value: $0.title?.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed) ?? ""),
+                URLQueryItem(name: "description", value: ""),
+                URLQueryItem(
+                    name: "type",
+                    value: $0.type?.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed) ?? ""),
+                URLQueryItem(
+                    name: "url",
+                    value: $0.url?.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed) ?? ""),
+            ]
+        }.flatMap({ $0 })
+        var urlComps = URLComponents(string: "logseq://")!
+        urlComps.queryItems = queryItems
+        openURL(urlComps.url!)
+    }
+    
+    fileprivate func createSharedFileUrl(_ url: URL?) -> String {
+        
+        let copyFileUrl = groupContainerUrl!.absoluteString.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)! + "/" + url!
+            .lastPathComponent.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)!
+        try? Data(contentsOf: url!).write(to: URL(string: copyFileUrl)!)
+        
+        return copyFileUrl
+    }
+    
+    func saveScreenshot(_ image: UIImage) -> String {
+        
+        let dateFormatter = DateFormatter()
+        dateFormatter.dateFormat = "yyyy-MM-dd-HH-mm-ss"
+        
+        let copyFileUrl = groupContainerUrl!.absoluteString.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)!
+        + dateFormatter.string(from: Date()) + ".png"
+        
+        do {
+            try image.pngData()?.write(to: URL(string: copyFileUrl)!)
+            return copyFileUrl
+        } catch {
+            print(error.localizedDescription)
+            return ""
+        }
+    }
+    
+    fileprivate func handleTypeUrl(_ attachment: NSItemProvider)
+    async throws -> ShareItem
+    {
+        let results = try await attachment.loadItem(forTypeIdentifier: kUTTypeURL as String, options: nil)
+        let url = results as! URL?
+        let shareItem: ShareItem = ShareItem()
+        
+        if url!.isFileURL {
+            shareItem.title = url!.lastPathComponent
+            shareItem.type = "application/" + url!.pathExtension.lowercased()
+            shareItem.url = createSharedFileUrl(url)
+        } else {
+            shareItem.title = url!.absoluteString
+            shareItem.url = url!.absoluteString
+            shareItem.type = "text/plain"
+        }
+        
+        return shareItem
+    }
+    
+    fileprivate func handleTypeText(_ attachment: NSItemProvider)
+    async throws -> ShareItem
+    {
+        let results = try await attachment.loadItem(forTypeIdentifier: kUTTypeText as String, options: nil)
+        let shareItem: ShareItem = ShareItem()
+        let text = results as! String
+        shareItem.title = text
+        shareItem.type = "text/plain"
+        
+        return shareItem
+    }
+    
+    fileprivate func handleTypeMovie(_ attachment: NSItemProvider)
+    async throws -> ShareItem
+    {
+        let results = try await attachment.loadItem(forTypeIdentifier: kUTTypeMovie as String, options: nil)
+        let shareItem: ShareItem = ShareItem()
+        
+        let url = results as! URL?
+        shareItem.title = url!.lastPathComponent
+        shareItem.type = "video/" + url!.pathExtension.lowercased()
+        shareItem.url = createSharedFileUrl(url)
+        
+        return shareItem
+    }
+    
+    fileprivate func handleTypeImage(_ attachment: NSItemProvider)
+    async throws -> ShareItem
+    {
+        let data = try await attachment.loadItem(forTypeIdentifier: kUTTypeImage as String, options: nil)
+        
+        let shareItem: ShareItem = ShareItem()
+        switch data {
+        case let image as UIImage:
+            shareItem.title = "screenshot"
+            shareItem.type = "image/png"
+            shareItem.url = self.saveScreenshot(image)
+        case let url as URL:
+            shareItem.title = url.lastPathComponent
+            shareItem.type = "image/" + url.pathExtension.lowercased()
+            shareItem.url = self.createSharedFileUrl(url)
+        default:
+            print("Unexpected image data:", type(of: data))
+        }
+        
+        return shareItem
+    }
+    
+    
+    override public func viewDidLoad() {
+        super.viewDidLoad()
+        
+        shareItems.removeAll()
+        
+        let extensionItem = extensionContext?.inputItems.first as! NSExtensionItem
+        Task {
+            try await withThrowingTaskGroup(
+                of: ShareItem.self,
+                body: { taskGroup in
+                    
+                    for attachment in extensionItem.attachments! {
+                        if attachment.hasItemConformingToTypeIdentifier(kUTTypeURL as String) {
+                            taskGroup.addTask {
+                                return try await self.handleTypeUrl(attachment)
+                            }
+                        } else if attachment.hasItemConformingToTypeIdentifier(kUTTypeText as String) {
+                            taskGroup.addTask {
+                                return try await self.handleTypeText(attachment)
+                            }
+                        } else if attachment.hasItemConformingToTypeIdentifier(kUTTypeMovie as String) {
+                            taskGroup.addTask {
+                                return try await self.handleTypeMovie(attachment)
+                            }
+                        } else if attachment.hasItemConformingToTypeIdentifier(kUTTypeImage as String) {
+                            taskGroup.addTask {
+                                return try await self.handleTypeImage(attachment)
+                            }
+                        }
+                    }
+                    
+                    for try await item in taskGroup {
+                        self.shareItems.append(item)
+                    }
+                })
+            
+            self.sendData()
+            
+        }
+    }
+    
+    @discardableResult
+    @objc func openURL(_ url: URL) -> Bool {
+        var responder: UIResponder? = self
+        while responder != nil {
+            if let application = responder as? UIApplication {
+                return application.perform(#selector(openURL(_:)), with: url) != nil
+            }
+            responder = responder?.next
+        }
+        return false
+    }
+    
+}
+