Course bars: Download videos to device and Select download quality bars

Core/Core.xcodeproj/project.pbxproj

@@ -126,6 +126,7 @@
 		07E0939F2B308D2800F1E4B2 /* Data_Certificate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 07E0939E2B308D2800F1E4B2 /* Data_Certificate.swift */; };
 		A53A32352B233DEC005FE38A /* ThemeConfig.swift in Sources */ = {isa = PBXBuildFile; fileRef = A53A32342B233DEC005FE38A /* ThemeConfig.swift */; };
 		BA30427F2B20B320009B64B7 /* SocialAuthError.swift in Sources */ = {isa = PBXBuildFile; fileRef = BA30427D2B20B299009B64B7 /* SocialAuthError.swift */; };
+		BA4AFB422B5A7A0900A21367 /* VideoDownloadQualityView.swift in Sources */ = {isa = PBXBuildFile; fileRef = BA4AFB412B5A7A0900A21367 /* VideoDownloadQualityView.swift */; };
 		BA593F1C2AF8E498009ADB51 /* ScrollSlidingTabBar.swift in Sources */ = {isa = PBXBuildFile; fileRef = BA593F1B2AF8E498009ADB51 /* ScrollSlidingTabBar.swift */; };
 		BA593F1E2AF8E4A0009ADB51 /* FrameReader.swift in Sources */ = {isa = PBXBuildFile; fileRef = BA593F1D2AF8E4A0009ADB51 /* FrameReader.swift */; };
 		BA76135C2B21BC7300B599B7 /* SocialAuthResponse.swift in Sources */ = {isa = PBXBuildFile; fileRef = BA76135B2B21BC7300B599B7 /* SocialAuthResponse.swift */; };
@@ -295,6 +296,7 @@
 		9D5B06CAA99EA5CD49CBE2BB /* Pods-App-Core.debugdev.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-App-Core.debugdev.xcconfig"; path = "Target Support Files/Pods-App-Core/Pods-App-Core.debugdev.xcconfig"; sourceTree = "<group>"; };
 		A53A32342B233DEC005FE38A /* ThemeConfig.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ThemeConfig.swift; sourceTree = "<group>"; };
 		BA30427D2B20B299009B64B7 /* SocialAuthError.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = SocialAuthError.swift; sourceTree = "<group>"; };
+		BA4AFB412B5A7A0900A21367 /* VideoDownloadQualityView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = VideoDownloadQualityView.swift; sourceTree = "<group>"; };
 		BA593F1B2AF8E498009ADB51 /* ScrollSlidingTabBar.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ScrollSlidingTabBar.swift; sourceTree = "<group>"; };
 		BA593F1D2AF8E4A0009ADB51 /* FrameReader.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = FrameReader.swift; sourceTree = "<group>"; };
 		BA76135B2B21BC7300B599B7 /* SocialAuthResponse.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SocialAuthResponse.swift; sourceTree = "<group>"; };
@@ -673,6 +675,7 @@
 				027BD3C42909707700392132 /* Shake.swift */,
 				023A1135291432B200D0D354 /* RegistrationTextField.swift */,
 				023A1137291432FD00D0D354 /* FieldConfiguration.swift */,
+				BA4AFB412B5A7A0900A21367 /* VideoDownloadQualityView.swift */,
 				BA593F1A2AF8E487009ADB51 /* ScrollSlidingTabBar */,
 				BAAD62C52AFCF00B000E6103 /* CustomDisclosureGroup.swift */,
 				BA8FA6672AD59A5700EA029A /* SocialAuthButton.swift */,
@@ -978,6 +981,7 @@
 				0241666B28F5A78B00082765 /* HTMLFormattedText.swift in Sources */,
 				02D800CC29348F460099CF16 /* ImagePicker.swift in Sources */,
 				027BD3B92909476200392132 /* KeyboardAvoidingModifier.swift in Sources */,
+				BA4AFB422B5A7A0900A21367 /* VideoDownloadQualityView.swift in Sources */,
 				0770DE2C28D092B3006D8A5D /* NetworkLogger.swift in Sources */,
 				064987972B4D69FF0071642A /* WebView.swift in Sources */,
 				0770DE2A28D0929E006D8A5D /* HTTPTask.swift in Sources */,

Core/Core/Data/Model/UserSettings.swift

@@ -7,13 +7,19 @@
 
 import Foundation
 
-public struct UserSettings: Codable {
+public struct UserSettings: Codable, Hashable {
     public var wifiOnly: Bool
     public var streamingQuality: StreamingQuality
-
-    public init(wifiOnly: Bool, streamingQuality: StreamingQuality) {
+    public var downloadQuality: DownloadQuality
+
+    public init(
+        wifiOnly: Bool,
+        streamingQuality: StreamingQuality,
+        downloadQuality: DownloadQuality
+    ) {
         self.wifiOnly = wifiOnly
         self.streamingQuality = streamingQuality
+        self.downloadQuality = downloadQuality
     }
 }
 
@@ -23,3 +29,10 @@ public enum StreamingQuality: Codable {
     case medium
     case high
 }
+
+public enum DownloadQuality: Codable, CaseIterable {
+    case auto
+    case low_360
+    case medium_540
+    case high_720
+}

Core/Core/Data/Persistence/CoreDataModel.xcdatamodeld/CoreDataModel.xcdatamodel/contents

@@ -1,8 +1,10 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<model type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="22222" systemVersion="22G91" minimumToolsVersion="Automatic" sourceLanguage="Swift" userDefinedModelVersionIdentifier="">
+<model type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="22522" systemVersion="22G91" minimumToolsVersion="Automatic" sourceLanguage="Swift" userDefinedModelVersionIdentifier="">
     <entity name="CDDownloadData" representedClassName="CDDownloadData" syncable="YES" codeGenerationType="class">
         <attribute name="courseId" optional="YES" attributeType="String"/>
+        <attribute name="displayName" optional="YES" attributeType="String"/>
         <attribute name="fileName" optional="YES" attributeType="String"/>
+        <attribute name="fileSize" optional="YES" attributeType="Integer 32" defaultValueString="0.0" usesScalarValueType="YES"/>
         <attribute name="id" optional="YES" attributeType="String"/>
         <attribute name="progress" optional="YES" attributeType="Double" defaultValueString="0.0" usesScalarValueType="YES"/>
         <attribute name="resumeData" optional="YES" attributeType="Binary"/>

Core/Core/Data/Persistence/CorePersistenceProtocol.swift

@@ -10,14 +10,15 @@ import Combine
 
 public protocol CorePersistenceProtocol {
     func publisher() -> AnyPublisher<Int, Never>
-    func getAllDownloadData() -> [DownloadData]
-    func addToDownloadQueue(blocks: [CourseBlock])
-    func getNextBlockForDownloading() -> DownloadData?
-    func getDownloadsForCourse(_ courseId: String) -> [DownloadData]
-    func downloadData(by blockId: String) -> DownloadData?
+    func addToDownloadQueue(blocks: [CourseBlock], downloadQuality: DownloadQuality)
+    func getNextBlockForDownloading() -> DownloadDataTask?
     func updateDownloadState(id: String, state: DownloadState, resumeData: Data?)
-    func deleteDownloadData(id: String) throws
-    func saveDownloadData(data: DownloadData)
+    func deleteDownloadDataTask(id: String) throws
+    func saveDownloadDataTask(data: DownloadDataTask)
+    func downloadDataTask(for blockId: String) -> DownloadDataTask?
+    func downloadDataTask(for blockId: String, completion: @escaping (DownloadDataTask?) -> Void)
+    func getDownloadDataTasks(completion: @escaping ([DownloadDataTask]) -> Void)
+    func getDownloadDataTasksForCourse(_ courseId: String, completion: @escaping ([DownloadDataTask]) -> Void)
 }
 
 public final class CoreBundle {

Core/Core/Domain/Model/CourseBlockModel.swift

@@ -8,6 +8,10 @@
 import Foundation
 
 public struct CourseStructure: Equatable {
+    public static func == (lhs: CourseStructure, rhs: CourseStructure) -> Bool {
+        return lhs.id == rhs.id
+    }
+
     public let id: String
     public let graded: Bool
     public let completion: Double
@@ -42,11 +46,24 @@ public struct CourseStructure: Equatable {
         self.media = media
         self.certificate = certificate
     }
-
-    public static func == (lhs: CourseStructure, rhs: CourseStructure) -> Bool {
-        return lhs.id == rhs.id
+
+    public func totalVideosSizeInBytes(downloadQuality: DownloadQuality) -> Int {
+        childs.flatMap {
+            $0.childs.flatMap { $0.childs.flatMap { $0.childs.compactMap { $0 } } }
+        }
+        .filter { $0.isDownloadable }
+        .compactMap { $0.encodedVideo?.video(downloadQuality: downloadQuality)?.fileSize }
+        .reduce(.zero) { $0 + $1 }
     }
-
+
+    public func totalVideosSizeInMb(downloadQuality: DownloadQuality) -> Double {
+        Double(totalVideosSizeInBytes(downloadQuality: downloadQuality)) / 1024.0 / 1024.0
+    }
+
+    public func totalVideosSizeInGb(downloadQuality: DownloadQuality) -> Double {
+        Double(totalVideosSizeInBytes(downloadQuality: downloadQuality)) / 1024.0 / 1024.0 / 1024.0
+    }
+
 }
 
 public struct CourseChapter: Identifiable {
@@ -102,7 +119,11 @@ public struct CourseSequential: Identifiable {
     }
 }
 
-public struct CourseVertical {
+public struct CourseVertical: Identifiable, Hashable {
+    public func hash(into hasher: inout Hasher) {
+        hasher.combine(id)
+    }
+
     public let blockId: String
     public let id: String
     public let courseId: String
@@ -114,7 +135,7 @@ public struct CourseVertical {
     public var isDownloadable: Bool {
         return childs.first(where: { $0.isDownloadable }) != nil
     }
-    
+
     public init(
         blockId: String,
         id: String,
@@ -144,7 +165,17 @@ public struct SubtitleUrl: Equatable {
     }
 }
 
-public struct CourseBlock: Equatable {
+public struct CourseBlock: Hashable {
+    public static func == (lhs: CourseBlock, rhs: CourseBlock) -> Bool {
+        lhs.id == rhs.id &&
+        lhs.blockId == rhs.blockId &&
+        lhs.completion == rhs.completion
+    }
+
+    public func hash(into hasher: inout Hasher) {
+        hasher.combine(id)
+    }
+
     public let blockId: String
     public let id: String
     public let courseId: String
@@ -155,13 +186,12 @@ public struct CourseBlock: Equatable {
     public let displayName: String
     public let studentUrl: String
     public let subtitles: [SubtitleUrl]?
-    public let videoUrl: String?
-    public let youTubeUrl: String?
-
+    public let encodedVideo: CourseBlockEncodedVideo?
+
     public var isDownloadable: Bool {
-        return videoUrl != nil
+        encodedVideo?.isDownloadable ?? false
     }
-    
+
     public init(
         blockId: String,
         id: String,
@@ -173,8 +203,7 @@ public struct CourseBlock: Equatable {
         displayName: String,
         studentUrl: String,
         subtitles: [SubtitleUrl]? = nil,
-        videoUrl: String? = nil,
-        youTubeUrl: String? = nil
+        encodedVideo: CourseBlockEncodedVideo?
     ) {
         self.blockId = blockId
         self.id = id
@@ -186,7 +215,109 @@ public struct CourseBlock: Equatable {
         self.displayName = displayName
         self.studentUrl = studentUrl
         self.subtitles = subtitles
-        self.videoUrl = videoUrl
-        self.youTubeUrl = youTubeUrl
+        self.encodedVideo = encodedVideo
+    }
+}
+
+public struct CourseBlockEncodedVideo {
+
+    public let fallback: CourseBlockVideo?
+    public let desktopMP4: CourseBlockVideo?
+    public let mobileHigh: CourseBlockVideo?
+    public let mobileLow: CourseBlockVideo?
+    public let hls: CourseBlockVideo?
+    public let youtube: CourseBlockVideo?
+
+    public init(
+        fallback: CourseBlockVideo?,
+        youtube: CourseBlockVideo?,
+        desktopMP4: CourseBlockVideo?,
+        mobileHigh: CourseBlockVideo?,
+        mobileLow: CourseBlockVideo?,
+        hls: CourseBlockVideo?
+    ) {
+        self.fallback = fallback
+        self.youtube = youtube
+        self.desktopMP4 = desktopMP4
+        self.mobileHigh = mobileHigh
+        self.mobileLow = mobileLow
+        self.hls = hls
+    }
+
+    public var isDownloadable: Bool {
+        [hls, desktopMP4, mobileHigh, mobileLow, fallback]
+            .contains { $0?.isDownloadable == true }
+    }
+
+    public func video(downloadQuality: DownloadQuality) -> CourseBlockVideo? {
+        switch downloadQuality {
+        case .auto:
+            [mobileLow, mobileHigh, desktopMP4, fallback, hls]
+                .first(where: { $0?.isDownloadable == true })?
+                .flatMap { $0 }
+        case .high_720:
+            [desktopMP4, mobileHigh, mobileLow, fallback, hls]
+                .first(where: { $0?.isDownloadable == true })?
+                .flatMap { $0 }
+        case .medium_540:
+            [mobileHigh, mobileLow, desktopMP4, fallback, hls]
+                .first(where: { $0?.isDownloadable == true })?
+                .flatMap { $0 }
+        case .low_360:
+            [mobileLow, mobileHigh, desktopMP4, fallback, hls]
+                .first(where: { $0?.isDownloadable == true })?
+                .flatMap { $0 }
+        }
+    }
+
+    public func video(streamingQuality: StreamingQuality) -> CourseBlockVideo? {
+        switch streamingQuality {
+        case .auto:
+            [mobileLow, mobileHigh, desktopMP4, fallback, hls]
+                .compactMap { $0 }
+                .sorted(by: { ($0?.streamPriority ?? 0) < ($1?.streamPriority ?? 0) })
+                .first?
+                .flatMap { $0 }
+        case .high:
+            [desktopMP4, mobileHigh, mobileLow, fallback, hls]
+                .compactMap { $0 }
+                .first?
+                .flatMap { $0 }
+        case .medium:
+            [mobileHigh, mobileLow, desktopMP4, fallback, hls]
+                .compactMap { $0 }
+                .first?
+                .flatMap { $0 }
+        case .low:
+            [mobileLow, mobileHigh, desktopMP4, fallback, hls]
+                .compactMap { $0 }
+                .first(where: { $0?.isDownloadable == true })?
+                .flatMap { $0 }
+        }
+    }
+
+    public var youtubeVideoUrl: String? {
+        youtube?.url
+    }
+
+}
+
+public struct CourseBlockVideo: Equatable {
+    public let url: String?
+    public let fileSize: Int?
+    public let streamPriority: Int?
+
+    public init(url: String?, fileSize: Int?, streamPriority: Int?) {
+        self.url = url
+        self.fileSize = fileSize
+        self.streamPriority = streamPriority
+    }
+
+    public var isVideoURL: Bool {
+        [".mp4", ".m3u8"].contains(where: { url?.contains($0) == true })
+    }
+
+    public var isDownloadable: Bool {
+        [".mp4"].contains(where: { url?.contains($0) == true })
     }
 }