feat(concerts): show artwork-themed event details in app

ios/Runner.xcodeproj/project.pbxproj

@@ -7,6 +7,7 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		C0CE00000000000000000001 /* ConcertCalendarBridge.swift in Sources */ = {isa = PBXBuildFile; fileRef = C0CE00000000000000000002 /* ConcertCalendarBridge.swift */; };
 		A0D100000000000000000001 /* AudioOutputView.swift in Sources */ = {isa = PBXBuildFile; fileRef = A0D100000000000000000002 /* AudioOutputView.swift */; };
 		F59500000000000000000011 /* PlayerWidgetState.swift in Sources */ = {isa = PBXBuildFile; fileRef = F59500000000000000000001 /* PlayerWidgetState.swift */; };
 		F59500000000000000000012 /* PlayerControlIntent.swift in Sources */ = {isa = PBXBuildFile; fileRef = F59500000000000000000002 /* PlayerControlIntent.swift */; };
@@ -70,6 +71,7 @@
 /* End PBXCopyFilesBuildPhase section */
 
 /* Begin PBXFileReference section */
+		C0CE00000000000000000002 /* ConcertCalendarBridge.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ConcertCalendarBridge.swift; sourceTree = "<group>"; };
 		A0D100000000000000000002 /* AudioOutputView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AudioOutputView.swift; sourceTree = "<group>"; };
 		F59500000000000000000009 /* PlayerWidget.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = PlayerWidget.xcconfig; sourceTree = "<group>"; };
 		F59500000000000000000001 /* PlayerWidgetState.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PlayerWidgetState.swift; sourceTree = "<group>"; };
@@ -213,6 +215,7 @@
 				74858FAE1ED2DC5600515810 /* AppDelegate.swift */,
 				F59500000000000000000004 /* PlayerWidgetBridge.swift */,
 				A0D100000000000000000002 /* AudioOutputView.swift */,
+				C0CE00000000000000000002 /* ConcertCalendarBridge.swift */,
 				F59500000000000000000007 /* Runner.entitlements */,
 				C03400000000000000000002 /* CoreBackend.swift */,
 				D08A594730CF000100000002 /* DownloadProgressSubscription.swift */,
@@ -475,6 +478,7 @@
 				F59500000000000000000012 /* PlayerControlIntent.swift in Sources */,
 				F59500000000000000000013 /* PlayerWidgetBridge.swift in Sources */,
 				A0D100000000000000000001 /* AudioOutputView.swift in Sources */,
+				C0CE00000000000000000001 /* ConcertCalendarBridge.swift in Sources */,
 				C03400000000000000000001 /* CoreBackend.swift in Sources */,
 				D08A594730CF000100000001 /* DownloadProgressSubscription.swift in Sources */,
 				A11CE0012F00000000000001 /* ExtensionCallbackParser.swift in Sources */,

ios/Runner/AppDelegate.swift

@@ -23,6 +23,7 @@ import UniformTypeIdentifiers
     private var lastLibraryScanProgressPayload: String?
     private var libraryScanProgressGeneration: UInt64 = 0
     private var backendChannel: FlutterMethodChannel?
+    private var concertCalendar: ConcertCalendarBridge?
     private let coreBackend: CoreBackend = createCoreBackend()
     private var pendingSessionGrantEvents: [[String: Any]] = []
 
@@ -55,6 +56,9 @@ import UniformTypeIdentifiers
     }
 
     private func configureFlutterEngine(_ messenger: FlutterBinaryMessenger, registry: FlutterPluginRegistry) {
+        concertCalendar = ConcertCalendarBridge(messenger: messenger) { [weak self] in
+            self?.activeWindow?.rootViewController
+        }
         PlayerWidgetBridge.shared.attach(messenger)
         let channel = FlutterMethodChannel(
             name: CHANNEL,

ios/Runner/ConcertCalendarBridge.swift

@@ -0,0 +1,65 @@
+import EventKit
+import EventKitUI
+import Flutter
+import UIKit
+
+final class ConcertCalendarBridge: NSObject, EKEventEditViewDelegate {
+    private let channel: FlutterMethodChannel
+    private let presenter: () -> UIViewController?
+    private let store = EKEventStore()
+
+    init(messenger: FlutterBinaryMessenger, presenter: @escaping () -> UIViewController?) {
+        channel = FlutterMethodChannel(name: "com.zarz.spotiflac/concert_calendar", binaryMessenger: messenger)
+        self.presenter = presenter
+        super.init()
+        channel.setMethodCallHandler { [weak self] call, result in
+            guard call.method == "add" else {
+                result(FlutterMethodNotImplemented)
+                return
+            }
+            guard let self, let data = call.arguments as? [String: Any],
+                  let start = data["start"] as? NSNumber else {
+                result(false)
+                return
+            }
+            if #available(iOS 17.0, *) {
+                // The system editor saves only after the user confirms; it
+                // needs no permission to read the person's existing events.
+                self.present(data, start: start, result: result)
+            } else {
+                self.store.requestAccess(to: .event) { [weak self] allowed, _ in
+                    DispatchQueue.main.async {
+                        guard let self, allowed else { result(false); return }
+                        self.present(data, start: start, result: result)
+                    }
+                }
+            }
+        }
+    }
+
+    private func present(_ data: [String: Any], start: NSNumber, result: @escaping FlutterResult) {
+        guard let controller = presenter(), controller.viewIfLoaded?.window != nil,
+              controller.presentedViewController == nil else {
+            result(false)
+            return
+        }
+        let event = EKEvent(eventStore: store)
+        event.title = data["title"] as? String
+        event.location = data["location"] as? String
+        event.startDate = Date(timeIntervalSince1970: start.doubleValue / 1000)
+        let end = (data["end"] as? NSNumber)?.doubleValue ?? 0
+        event.endDate = end > start.doubleValue
+            ? Date(timeIntervalSince1970: end / 1000)
+            : event.startDate.addingTimeInterval(3600)
+        if let url = data["url"] as? String { event.url = URL(string: url) }
+        let editor = EKEventEditViewController()
+        editor.eventStore = store
+        editor.event = event
+        editor.editViewDelegate = self
+        controller.present(editor, animated: true) { result(true) }
+    }
+
+    func eventEditViewController(_ controller: EKEventEditViewController, didCompleteWith action: EKEventEditViewAction) {
+        controller.dismiss(animated: true)
+    }
+}

ios/Runner/Info.plist

@@ -2,6 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>NSCalendarsUsageDescription</key>
+	<string>Add a concert to your calendar after you review and save it.</string>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>$(DEVELOPMENT_LANGUAGE)</string>
 	<key>CFBundleLocalizations</key>