implement settings for download on demand

deltachat-ios.xcodeproj/project.pbxproj

@@ -69,6 +69,7 @@
 		30734326249A280B00BF9AD1 /* MediaQualityController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 30734325249A280B00BF9AD1 /* MediaQualityController.swift */; };
 		307A82CC25B8D26700748B57 /* ChatEditingBar.swift in Sources */ = {isa = PBXBuildFile; fileRef = 307A82CB25B8D26700748B57 /* ChatEditingBar.swift */; };
 		307D822E241669C7006D2490 /* LocationManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = 307D822D241669C7006D2490 /* LocationManager.swift */; };
+		30860EE926F49E64002651A6 /* DownloadOnDemandViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 30860EE826F49E64002651A6 /* DownloadOnDemandViewController.swift */; };
 		3095A351237DD1F700AB07F7 /* MediaPicker.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3095A350237DD1F700AB07F7 /* MediaPicker.swift */; };
 		30A4149724F6EFBE00EC91EB /* InfoMessageCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = 30A4149624F6EFBE00EC91EB /* InfoMessageCell.swift */; };
 		30B0ACFA24AB5B99004D5E29 /* SettingsEphemeralMessageController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 30B0ACF924AB5B99004D5E29 /* SettingsEphemeralMessageController.swift */; };
@@ -318,6 +319,7 @@
 		30734325249A280B00BF9AD1 /* MediaQualityController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MediaQualityController.swift; sourceTree = "<group>"; };
 		307A82CB25B8D26700748B57 /* ChatEditingBar.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ChatEditingBar.swift; sourceTree = "<group>"; };
 		307D822D241669C7006D2490 /* LocationManager.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LocationManager.swift; sourceTree = "<group>"; };
+		30860EE826F49E64002651A6 /* DownloadOnDemandViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DownloadOnDemandViewController.swift; sourceTree = "<group>"; };
 		3095A350237DD1F700AB07F7 /* MediaPicker.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MediaPicker.swift; sourceTree = "<group>"; };
 		30A4149624F6EFBE00EC91EB /* InfoMessageCell.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = InfoMessageCell.swift; sourceTree = "<group>"; };
 		30AC265E237F1807002A943F /* AvatarHelper.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AvatarHelper.swift; sourceTree = "<group>"; };
@@ -809,6 +811,7 @@
 				AE76E5ED242BF2EA003CF461 /* WelcomeViewController.swift */,
 				AE8F503424753DFE007FEE0B /* GalleryViewController.swift */,
 				30734325249A280B00BF9AD1 /* MediaQualityController.swift */,
+				30860EE826F49E64002651A6 /* DownloadOnDemandViewController.swift */,
 				AED423D2249F578B00B6B2BB /* AddGroupMembersViewController.swift */,
 				AED423D6249F580700B6B2BB /* BlockedContactsViewController.swift */,
 				AE39D322249CFC1A007346A1 /* DocumentGalleryController.swift */,
@@ -1314,6 +1317,7 @@
 				30149D9322F21129003C12B5 /* QrViewController.swift in Sources */,
 				AEE56D80225504DB007DC082 /* Extensions.swift in Sources */,
 				7A0052C81FBE6CB40048C3BF /* NewContactController.swift in Sources */,
+				30860EE926F49E64002651A6 /* DownloadOnDemandViewController.swift in Sources */,
 				AEE56D762253431E007DC082 /* AccountSetupController.swift in Sources */,
 				AE8F503524753DFE007FEE0B /* GalleryViewController.swift in Sources */,
 				B2C42570265C325C00B95377 /* MultilineLabelCell.swift in Sources */,

deltachat-ios/Controller/DownloadOnDemandViewController.swift

@@ -0,0 +1,83 @@
+import UIKit
+import DcCore
+class DownloadOnDemandViewController: UITableViewController {
+
+    private var dcContext: DcContext
+
+    private var options: [Int]
+
+    private lazy var staticCells: [UITableViewCell] = {
+        return options.map({
+            let cell = UITableViewCell(style: .default, reuseIdentifier: nil)
+            cell.textLabel?.text = DownloadOnDemandViewController.getValString(val: $0)
+            return cell
+        })
+    }()
+
+    init(dcContext: DcContext) {
+        self.dcContext = dcContext
+        self.options = [0, 40960, 163840, 655360, 5242880, 26214400]
+        super.init(style: .grouped)
+        self.title = String.localized("auto_download_messages")
+        hidesBottomBarWhenPushed = true
+    }
+
+    required init?(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+    }
+
+    static func getValString(val: Int) -> String {
+        switch val {
+        case 0:
+            return String.localized("no_limit")
+        case 40960:
+            return String.localizedStringWithFormat(String.localized("up_to_x"), "40 KiB")
+        case 163840:
+            return String.localizedStringWithFormat(String.localized("up_to_x_most_worse_quality_images"), "160 KiB")
+        case 655360:
+            return String.localizedStringWithFormat(String.localized("up_to_x_most_balanced_quality_images"), "640 KiB")
+        case 5242880:
+            return String.localizedStringWithFormat(String.localized("up_to_x"), "5 MB")
+        case 26214400:
+            return String.localizedStringWithFormat(String.localized("up_to_x"), "25 MB")
+        default:
+            return "Err"
+        }
+    }
+
+    // MARK: - Table view data source
+
+    override func numberOfSections(in tableView: UITableView) -> Int {
+        return 1
+    }
+
+    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+        return options.count
+    }
+
+    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
+        tableView.deselectRow(at: indexPath, animated: true) // animated as no other elements pop up
+
+        if let lastSelectedIndex = options.index(of: dcContext.getConfigInt("download_limit")) {
+            let oldSelectedCell = tableView.cellForRow(at: IndexPath.init(row: lastSelectedIndex, section: 0))
+            oldSelectedCell?.accessoryType = .none
+        }
+
+        let newSelectedCell = tableView.cellForRow(at: IndexPath.init(row: indexPath.row, section: 0))
+        newSelectedCell?.accessoryType = .checkmark
+
+        dcContext.setConfigInt("download_limit", options[indexPath.row])
+    }
+
+    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
+        let cell = staticCells[indexPath.row]
+        if options[indexPath.row] == dcContext.getConfigInt("download_limit") {
+            cell.accessoryType = .checkmark
+        }
+        return cell
+    }
+}

deltachat-ios/Controller/SettingsController.swift

@@ -25,9 +25,10 @@ internal final class SettingsViewController: UITableViewController, ProgressAler
         case help = 10
         case autodel = 11
         case mediaQuality = 12
-        case switchAccount = 13
-        case videoChat = 14
-        case connectivity = 15
+        case downloadOnDemand = 13
+        case switchAccount = 14
+        case videoChat = 15
+        case connectivity = 16
     }
 
     private var dcContext: DcContext
@@ -106,6 +107,15 @@ internal final class SettingsViewController: UITableViewController, ProgressAler
         return cell
     }()
 
+    private lazy var downloadOnDemandCell: UITableViewCell = {
+        let cell = UITableViewCell(style: .value1, reuseIdentifier: nil)
+        cell.tag = CellTags.downloadOnDemand.rawValue
+        cell.textLabel?.text = String.localized("auto_download_messages")
+        cell.accessoryType = .disclosureIndicator
+        cell.detailTextLabel?.text = DownloadOnDemandViewController.getValString(val: dcContext.getConfigInt("download_limit"))
+        return cell
+    }()
+
     private lazy var videoChatInstanceCell: UITableViewCell = {
         let cell = UITableViewCell(style: .value1, reuseIdentifier: nil)
         cell.tag = CellTags.videoChat.rawValue
@@ -220,7 +230,8 @@ internal final class SettingsViewController: UITableViewController, ProgressAler
         let preferencesSection = SectionConfigs(
             headerTitle: String.localized("pref_chats_and_media"),
             footerTitle: String.localized("pref_read_receipts_explain"),
-            cells: [showArchiveCell, showEmailsCell, blockedContactsCell, autodelCell, mediaQualityCell, videoChatInstanceCell, notificationCell, receiptConfirmationCell]
+            cells: [showArchiveCell, showEmailsCell, blockedContactsCell, autodelCell, mediaQualityCell,
+                    downloadOnDemandCell, videoChatInstanceCell, notificationCell, receiptConfirmationCell]
         )
         let autocryptSection = SectionConfigs(
             headerTitle: String.localized("autocrypt"),
@@ -334,6 +345,7 @@ internal final class SettingsViewController: UITableViewController, ProgressAler
         case .blockedContacts: showBlockedContacts()
         case .autodel: showAutodelOptions()
         case .mediaQuality: showMediaQuality()
+        case .downloadOnDemand: showDownloadOnDemand()
         case .videoChat: showVideoChatInstance()
         case .notifications: break
         case .receiptConfirmation: break
@@ -558,6 +570,8 @@ internal final class SettingsViewController: UITableViewController, ProgressAler
         profileCell.updateCell(cellViewModel: ProfileViewModel(context: dcContext))
         showEmailsCell.detailTextLabel?.text = SettingsClassicViewController.getValString(val: dcContext.showEmails)
         mediaQualityCell.detailTextLabel?.text = MediaQualityController.getValString(val: dcContext.getConfigInt("media_quality"))
+        downloadOnDemandCell.detailTextLabel?.text = DownloadOnDemandViewController.getValString(
+            val: dcContext.getConfigInt("download_limit"))
         videoChatInstanceCell.detailTextLabel?.text = dcContext.getConfig("webrtc_instance")
         autodelCell.detailTextLabel?.text = autodelSummary()
         connectivityCell.detailTextLabel?.text = DcUtils.getConnectivityString(dcContext: dcContext,
@@ -580,6 +594,11 @@ internal final class SettingsViewController: UITableViewController, ProgressAler
         navigationController?.pushViewController(mediaQualityController, animated: true)
     }
 
+    private func showDownloadOnDemand() {
+        let downloadOnDemandViewController = DownloadOnDemandViewController(dcContext: dcContext)
+        navigationController?.pushViewController(downloadOnDemandViewController, animated: true)
+    }
+
     private func showVideoChatInstance() {
         let videoInstanceController = SettingsVideoChatViewController(dcContext: dcContext)
         navigationController?.pushViewController(videoInstanceController, animated: true)