From 03c87105d3e4e69cb421fdd48d546ffd0663d5f0 Mon Sep 17 00:00:00 2001
From: Shadowfacts <me@shadowfacts.net>
Date: Mon, 27 Aug 2018 12:40:22 -0400
Subject: [PATCH] Add StatusContentLabel entity detection

---
 MastodonKit                            |  2 +-
 Tusker/Views/StatusContentLabel.swift  | 60 +++++++++++++++++++++++++-
 Tusker/Views/StatusTableViewCell.swift | 19 +++++++-
 3 files changed, 78 insertions(+), 3 deletions(-)

diff --git a/MastodonKit b/MastodonKit
index 30aa01aa..b3653523 160000
--- a/MastodonKit
+++ b/MastodonKit
@@ -1 +1 @@
-Subproject commit 30aa01aa0ffb7cdd27030869d816cc0bc718ab3d
+Subproject commit b3653523af6b15fae5e3f8d425304c93d9bef9c7
diff --git a/Tusker/Views/StatusContentLabel.swift b/Tusker/Views/StatusContentLabel.swift
index bd016d72..90042a4c 100644
--- a/Tusker/Views/StatusContentLabel.swift
+++ b/Tusker/Views/StatusContentLabel.swift
@@ -7,10 +7,23 @@
 //
 
 import UIKit
+import MastodonKit
 import SwiftSoup
 
+protocol StatusContentLabelDelegate {
+    
+    func selected(mention: Mention)
+    
+    func selected(tag: MastodonKit.Tag)
+    
+    func selected(url: URL)
+    
+}
+
 class StatusContentLabel: UILabel {
 
+    var delegate: StatusContentLabelDelegate?
+    
     override var text: String? {
         didSet {
             parseHTML()
@@ -35,6 +48,12 @@ class StatusContentLabel: UILabel {
         }
     }
     
+    var status: Status! {
+        didSet {
+            text = status.content
+        }
+    }
+    
     private var _customizing = true
     
     private lazy var textStorage = NSTextStorage()
@@ -165,6 +184,35 @@ class StatusContentLabel: UILabel {
     
     // MARK: - Interaction
     
+    private func getMention(for url: URL, text: String) -> Mention? {
+        return status.mentions.first(where: { mention -> Bool in
+            (text.dropFirst() == mention.username || text == mention.username) && url.host == URL(string: mention.url)!.host
+        })
+    }
+    
+    private func getTag(for url: URL, text: String) -> MastodonKit.Tag? {
+        if let tag = status.tags.first(where: { tag -> Bool in
+            tag.url == url.absoluteString
+        }) {
+            return tag
+        } else if text.starts(with: "#") {
+            let tag = String(text.dropFirst())
+            return MastodonKit.Tag(name: tag, url: url.absoluteString)
+        } else {
+            return nil
+        }
+    }
+    
+    private func getEntity(for url: URL, text: String) -> Any {
+        if let mention = getMention(for: url, text: text) {
+            return mention
+        } else if let tag = getTag(for: url, text: text) {
+            return tag
+        } else {
+            return url
+        }
+    }
+    
     private func onTouch(_ touch: UITouch) -> Bool {
         let location = touch.location(in: self)
         var avoidSuperCall = false
@@ -185,7 +233,17 @@ class StatusContentLabel: UILabel {
         case .ended:
             guard let selectedLink = selectedLink else { return avoidSuperCall }
             
-            print("tapped \(selectedLink)")
+            let text = String(self.text![Range(selectedLink.range, in: self.text!)!])
+//            print(getEntity(for: selectedLink.url, text: text))
+            if let delegate = delegate {
+                if let mention = getMention(for: selectedLink.url, text: text) {
+                    delegate.selected(mention: mention)
+                } else if let tag = getTag(for: selectedLink.url, text: text) {
+                    delegate.selected(tag: tag)
+                } else {
+                    delegate.selected(url: selectedLink.url)
+                }
+            }
             
             let when = DispatchTime.now() + Double(Int64(0.25 * Double(NSEC_PER_SEC))) / Double(NSEC_PER_SEC)
             DispatchQueue.main.asyncAfter(deadline: when) {
diff --git a/Tusker/Views/StatusTableViewCell.swift b/Tusker/Views/StatusTableViewCell.swift
index 4d991c4f..16cedae9 100644
--- a/Tusker/Views/StatusTableViewCell.swift
+++ b/Tusker/Views/StatusTableViewCell.swift
@@ -49,7 +49,8 @@ class StatusTableViewCell: UITableViewCell {
             }
         }
         
-        contentLabel.text = status.content
+        contentLabel.status = status
+        contentLabel.delegate = self
     }
     
     override func prepareForReuse() {
@@ -59,3 +60,19 @@ class StatusTableViewCell: UITableViewCell {
     }
 
 }
+
+extension StatusTableViewCell: StatusContentLabelDelegate {
+    
+    func selected(mention: Mention) {
+        print("selected mention: \(mention.acct)")
+    }
+    
+    func selected(tag: MastodonKit.Tag) {
+        print("selected tag: \(tag.name)")
+    }
+    
+    func selected(url: URL) {
+        print("selected url: \(url)")
+    }
+    
+}