joplin-desktop: support profiles and more options

Joplin supports creating multiple profiles. This functionality was
previously missing from the joplin-desktop module and is implemented
in this PR.
In order to support profiles, the structure of the defined options had
to be split up into "global" settings that are shared between profiles
and profile-specific settings. This is a breaking change, but
necessary to avoid confusion about the difference between global and
profile-specific settings.

In addition to profiles, a few new options (such as markdown settings)
have been added.

modules/programs/joplin-desktop.nix

@@ -1,13 +1,92 @@
 { config, lib, pkgs, ... }:
 
 let
-
   cfg = config.programs.joplin-desktop;
 
   jsonFormat = pkgs.formats.json { };
 
   # config path is the same for linux and mac
-  configPath = "${config.xdg.configHome}/joplin-desktop/settings.json";
+  configPath = "${config.xdg.configHome}/joplin-desktop";
+
+  # toJoplinSettings receives cfg as input and creates the content of the joplin-desktop/settings.json file
+  toJoplinSettings = settings:
+    (jsonFormat.generate "joplin-settings.json"
+      (lib.attrsets.filterAttrsRecursive (n: v: v != null) ({
+        ### General
+        "editor" = settings.general.editor;
+        "locale" = settings.general.language;
+        ### Sync
+        "sync.interval" = {
+          "" = null;
+          "disabled" = 0;
+          "5m" = 300;
+          "10m" = 600;
+          "30m" = 1800;
+          "1h" = 3600;
+          "12h" = 43200;
+          "1d" = 86400;
+        }.${settings.sync.interval};
+        ### Appearance
+        "theme" = {
+          "" = null;
+          "light" = 1;
+          "dark" = 2;
+          "solarised-light" = 3;
+          "solarised-dark" = 4;
+          "dracula" = 5;
+          "nord" = 6;
+          "aritim-dark" = 7;
+          "oled-dark" = 22;
+        }.${settings.appearance.theme};
+        "themeAutoDetect" = settings.appearance.autoDetectTheme;
+        ### Note
+        "imageResizing" = settings.note.resizeLargeImages;
+        "newTodoFocus" = settings.note.newTodoFocus;
+        "newNoteFocus" = settings.note.newTodoFocus;
+        "trackLocation" = settings.note.saveGeoLocation;
+        "editor.autoMatchingBraces" = settings.note.autoPairBraces;
+      }
+      ### Markdown
+      # map all values; replaces "markdown.plugin.softbreaks" = settings.markdown.softbreaks;
+        // (lib.attrsets.concatMapAttrs
+          (name: value: { "markdown.plugin.${name}" = value; })
+          settings.markdown)
+        ### Application
+        ### Encryption
+        ### Web Clipper
+        ### Keyboard Shortcuts
+        // settings.extraConfig)));
+
+  # This creates the content of the joplin-desktop/<profile-name>/settings.json file
+  toProfileSettings = settings:
+    (jsonFormat.generate "profile-settings.json"
+      (lib.attrsets.filterAttrsRecursive (n: v: v != null) {
+        ### Sync
+        "sync.target" = {
+          "" = null;
+          "none" = 0;
+          "file-system" = 2;
+          "onedrive" = 3;
+          "nextcloud" = 5;
+          "webdav" = 6;
+          "dropbox" = 7;
+          "s3" = 8;
+          "joplin-server" = 9;
+          "joplin-cloud" = 10;
+        }.${settings.sync.target};
+        ### Note History
+        "revisionService.enabled" = settings.noteHistory.enable;
+        "revisionService.ttlDays" = settings.noteHistory.historyDuration;
+      } // settings.extraConfig));
+
+  # This creates the content of the joplin-desktop/profiles.json file
+  toJoplinProfiles = profiles:
+    (jsonFormat.generate "profiles.json" ({
+      "profiles" = (builtins.map (name: {
+        "name" = name;
+        "id" = profiles.${name}.id;
+      }) (builtins.attrNames profiles));
+    }));
 
 in {
   meta.maintainers = [ lib.hm.maintainers.zorrobert ];
@@ -17,17 +96,35 @@ in {
 
     package = lib.mkPackageOption pkgs "joplin-desktop" { };
 
+    # This could be implemented in the future if needed
+    # useNixStore = lib.mkOption {
+    #   type = lib.types.bool;
+    #   default = false;
+    #   description = ''
+    #     There are two ways to configure Joplin, #1 is the default:
+    #     #1: Use jq and printf to generate and write to .config/joplin-desktop/settings.json.
+    #     #2: Use home.file to create the config file in the Nix Store and link it to .config/joplin-desktop/settings.json.
+    #
+    #     Both methods have advantages and drawbacks:
+    #     #1: This method still allows the user to change settings via the Joplin GUI, which is good for usability. This is also necessary to find out what to put into the extraConfig option to change a  setting not covered by this module. The problem is that the file is only written when options in home-manager are changed, but not when changes are made via the GUI, potentially leading to inconsistencies across systems.
+    #     #2: Because the Nix Store is read-only, settings can't be changed via the Joplin GUI. The advantage is that this ensures that every system has the same config file because it is only written by home-manager. The problem is that since Joplin itself can't modify the config file, it can't store things like "api.token", "$schema" or "ui.layout", which could break things.
+    #
+    #     Because of the potentially side effects that a read-only config file could have on Joplin, #1 is the default. Still, there may be cases where #2 could be useful.
+    #   '';
+    # };
+
     extraConfig = lib.mkOption {
       type = lib.types.attrs;
       default = { };
       example = {
         "newNoteFocus" = "title";
         "markdown.plugin.mark" = true;
+        "sync.interval" = 600;
       };
       description = ''
-        Use this to add other options to the Joplin config file. Settings are
+        Use this to add other options to the global Joplin config file. Settings are
         written in JSON, so `"sync.interval": 600` would be written as
-        `"sync.interval" = 600`.
+        `"sync.interval" = 600;`.
       '';
     };
 
@@ -43,13 +140,250 @@ in {
           editor.
         '';
       };
+
+      language = lib.mkOption {
+        type = lib.types.nullOr lib.types.str;
+        default = null;
+        example = "en_GB";
+        description = "The language of the Joplin Application.";
+      };
+    };
+
+    ### Sync
+    sync = {
+      interval = lib.mkOption {
+        type =
+          lib.types.enum [ "" "disabled" "5m" "10m" "30m" "1h" "12h" "1d" ];
+        default = "";
+        example = "10m";
+        description = "Set the synchronisation interval.";
+      };
+    };
+
+    ### Appearance
+    appearance = {
+      theme = lib.mkOption {
+        type = lib.types.enum [
+          ""
+          "light"
+          "dark"
+          "solarised-light"
+          "solarised-dark"
+          "dracula"
+          "nord"
+          "aritim-dark"
+          "oled-dark"
+        ];
+        default = "";
+        example = "10m";
+        description = "Set the application theme.";
+      };
+
+      autoDetectTheme = lib.mkOption {
+        type = lib.types.nullOr lib.types.bool;
+        default = null;
+        description = "Automatically switch theme to match system theme.";
+      };
+    };
+
+    ### Note
+    note = {
+      resizeLargeImages = lib.mkOption {
+        type = lib.types.enum [ null "alwaysResize" "alwaysAsk" "neverResize" ];
+        default = null;
+        description =
+          "Shrink large images before adding them to notes to save storage space.";
+      };
+
+      newTodoFocus = lib.mkOption {
+        type = lib.types.enum [ null "body" "title" ];
+        default = null;
+        description = "Focus body or title when creating a new to-do.";
+      };
+
+      newNoteFocus = lib.mkOption {
+        type = lib.types.enum [ null "body" "title" ];
+        default = null;
+        description = "Focus body or title when creating a new note.";
+      };
+
+      saveGeoLocation = lib.mkOption {
+        type = lib.types.nullOr lib.types.bool;
+        default = null;
+        description = "Whether to save geo-location to the note.";
+      };
+
+      autoPairBraces = lib.mkOption {
+        type = lib.types.nullOr lib.types.bool;
+        default = null;
+        description =
+          "Whether to auto-pair braces, paranthesis, quotations, etc.";
+      };
+    };
+
+    ### Plugins (WIP)
+    # This is a WIP and not ready for release yet
+    #plugins = {
+    #  installedPlugins = lib.mkOption {
+    #    type = lib.types.listOf lib.types.str;
+    #    default = [ ];
+    #    example = [
+    #      "com.s73ph4n.automate_notes"
+    #      "com.github.marc0l92.joplin-plugin-drawio"
+    #      "com.gitlab.BeatLink.joplin-plugin-agenda"
+    #    ];
+    #    description = ''
+    #      A list of plugins to install.
+    #      The full list of Plugins can be found here:
+    #      https://github.com/joplin/plugins/blob/master/README.md#plugins
+    #      The plugin name can be found in the download URL:
+    #      https://github.com/joplin/plugins/raw/master/plugins/PLUGIN-NAME/plugin.jpl
+    #    '';
+    #  };
+    #};
+
+    ### Markdown
+    # The markdown options are all booleans with default = null, the definitions can be shortened.
+    markdown = let
+      type = lib.types.nullOr lib.types.bool;
+      default = null;
+    in {
+      softbreaks = lib.mkOption {
+        inherit type default;
+        description = "Enable soft breaks (wysiwyg: yes)";
+      };
+      typographer = lib.mkOption {
+        inherit type default;
+        description = "Enable typographer support (wysiwyg: yes)";
+      };
+      linkify = lib.mkOption {
+        inherit type default;
+        description = "Enable Linkify (wysiwyg: yes)";
+      };
+      math = lib.mkOption {
+        inherit type default;
+        description = "Enable math expressions (wysiwyg: yes)";
+      };
+      fountain = lib.mkOption {
+        inherit type default;
+        description = "Enable Fountain support (wysiwyg: yes)";
+      };
+      mermaid = lib.mkOption {
+        inherit type default;
+        description = "Enable Mermaid diagrams support (wysiwyg: yes)";
+      };
+      audioPlayer = lib.mkOption {
+        inherit type default;
+        description = "Enable audio player (wysiwyg: no)";
+      };
+      videoPlayer = lib.mkOption {
+        inherit type default;
+        description = "Enable video player (wysiwyg: no)";
+      };
+      pdfViewer = lib.mkOption {
+        inherit type default;
+        description = "Enable PDF viewer (wysiwyg: no)";
+      };
+      mark = lib.mkOption {
+        inherit type default;
+        description = "Enable ==mark== syntax (wysiwyg: yes)";
+      };
+      footnote = lib.mkOption {
+        inherit type default;
+        description = "Enable footnotes (wysiwyg: no)";
+      };
+      toc = lib.mkOption {
+        inherit type default;
+        description = "Enable table of contents extension (wysiwyg: no)";
+      };
+      sub = lib.mkOption {
+        inherit type default;
+        description = "Enable ~sub~ syntax (wysiwyg: yes)";
+      };
+      sup = lib.mkOption {
+        inherit type default;
+        description = "Enable ^sup^ syntax (wysiwyg: yes)";
+      };
+      deflist = lib.mkOption {
+        inherit type default;
+        description = "Enable deflist syntax (wysiwyg: no)";
+      };
+      abbr = lib.mkOption {
+        inherit type default;
+        description = "Enable abbreviation syntax (wysiwyg: no)";
+      };
+      emoji = lib.mkOption {
+        inherit type default;
+        description = "Enable markdown emoji (wysiwyg: no)";
+      };
+      insert = lib.mkOption {
+        inherit type default;
+        description = "Enable ++insert++ syntax (wysiwyg: yes)";
+      };
+      multitable = lib.mkOption {
+        inherit type default;
+        description = "Enable multimarkdown table extension (wysiwyg: no)";
+      };
+    };
+
+    ### Application
+    ### Encryption
+    ### Web Clipper
+    ### Keyboard Shortcuts
+
+    profiles = lib.mkOption {
+      default = { };
+      description = ''
+        Joplin supports creating multiple profiles. The settings in this set
+        are profile-specific, while others are shared between profiles.
+        See https://joplinapp.org/help/apps/profiles/
+      '';
+      type = lib.types.attrsOf (lib.types.submodule ({ config, name, ... }: {
+        options = {
+          name = lib.mkOption {
+            type = lib.types.str;
+            default = name;
+            description = "Profile name.";
+          };
+
+          id = lib.mkOption {
+            type = lib.types.str;
+            # The default profile has the name "Default" and needs the ID "default".
+            default = (if name == "Default" then
+              "default"
+            else
+              (builtins.substring 0 8 (builtins.hashString "md5" name)));
+            description = ''
+              The Profile ID.
+              This should be unique string of 8 characters per profile.
+              By default, the first 8 characters of the md5  hash
+              of the profile name are used.
+            '';
+          };
+
+          extraConfig = lib.mkOption {
+            type = lib.types.attrs;
+            default = { };
+            example = {
+              "newNoteFocus" = "title";
+              "markdown.plugin.mark" = true;
+            };
+            description = ''
+              Use this to further modify the config file of this profile.
+              Settings are written in JSON, so `"sync.target": 7` would be
+              written as `"sync.target" = "dropbox";`.
+              Note that if you add settings here that Joplin views as
+              "global settings" (see https://joplinapp.org/help/apps/profiles/),
+              they will not be applied in the profile.
+              Try to use the joplin-desktop.extraConfig option instead.
+            '';
           };
 
           ### Sync
           sync = {
             target = lib.mkOption {
               type = lib.types.enum [
-          "undefined"
+                ""
                 "none"
                 "file-system"
                 "onedrive"
@@ -60,76 +394,92 @@ in {
                 "joplin-server"
                 "joplin-cloud"
               ];
-        default = "undefined";
+              default = "";
               example = "dropbox";
               description = "What is the type of sync target.";
             };
-
-      interval = lib.mkOption {
-        type = lib.types.enum [
-          "undefined"
-          "disabled"
-          "5m"
-          "10m"
-          "30m"
-          "1h"
-          "12h"
-          "1d"
-        ];
-        default = "undefined";
-        example = "10m";
-        description = ''
-          Set the synchronisation interval.
-        '';
           };
+
+          ### Note History (profile-specific)
+          noteHistory = {
+            enable = lib.mkOption {
+              type = lib.types.nullOr lib.types.bool;
+              default = null;
+              description = "Enable note history.";
+            };
+            historyDuration = lib.mkOption {
+              type = lib.types.nullOr lib.types.int;
+              default = null;
+              description = "Keep Note History for (days)";
+            };
+          };
+        };
+      }));
     };
   };
 
   config = lib.mkIf cfg.enable {
+    assertions = [{
+      assertion = (lib.attrsets.matchAttrs { Default = { id = "default"; }; }
+        cfg.profiles);
+      message = ''
+        Joplin-Desktop: The profile 'Default' must exist and have an ID other than 'default'.
+      '';
+    }];
+
     home.packages = [ cfg.package ];
 
     home.activation = {
-      activateJoplinDesktopConfig = let
+      createJoplinConfig = lib.hm.dag.entryAfter [ "linkGeneration" ]
-        newConfig = jsonFormat.generate "joplin-settings.json"
+        (lib.concatStringsSep "\n" (
-          (lib.attrsets.filterAttrs (n: v: (v != null) && (v != "")) ({
+          # write the global config file (including settings for the default profile)
-            # TODO: find a better way to convert nix attribute names to strings:
+          [''
-            # sync.interval = ... -> "sync.interval" = ...
-
-            "editor" = cfg.general.editor;
-
-            "sync.target" = {
-              "undefined" = null;
-              "none" = 0;
-              "file-system" = 2;
-              "onedrive" = 3;
-              "nextcloud" = 5;
-              "webdav" = 6;
-              "dropbox" = 7;
-              "s3" = 8;
-              "joplin-server" = 9;
-              "joplin-cloud" = 10;
-            }.${cfg.sync.target};
-
-            "sync.interval" = {
-              "undefined" = null;
-              "disabled" = 0;
-              "5m" = 300;
-              "10m" = 600;
-              "30m" = 1800;
-              "1h" = 3600;
-              "12h" = 43200;
-              "1d" = 86400;
-            }.${cfg.sync.interval};
-          } // cfg.extraConfig));
-      in lib.hm.dag.entryAfter [ "linkGeneration" ] ''
             # Ensure that settings.json exists.
-        mkdir -p ${builtins.dirOf configPath}
+            mkdir -p ${configPath}
-        touch ${configPath}
+            touch ${configPath}/settings.json
             # Config has to be written to temporary variable because jq cannot edit files in place.
-        config="$(jq -s '.[0] + .[1]' ${configPath} ${newConfig})"
+            config="$(jq -s '.[0] + .[1] + .[2]' ${configPath}/settings.json ${
-        printf '%s\n' "$config" > ${configPath}
+              toJoplinSettings cfg
+            } ${toProfileSettings cfg.profiles.Default})"
+            printf '%s\n' "$config" > ${configPath}/settings.json
             unset config
-      '';
+          '']
+
+          # create the profiles and write the config (except for the default profile)
+          ++ (builtins.map (name: ''
+            # create profile folder
+            mkdir -p ${configPath}/profile-${cfg.profiles.${name}.id}
+            # create config file in every profile folder
+            touch ${configPath}/profile-${cfg.profiles.${name}.id}/settings.json
+            # Config has to be written to temporary variable because jq cannot edit files in place.
+            config="$(jq -s '.[0] + .[1]' ${configPath}/profile-${
+              cfg.profiles.${name}.id
+            }/settings.json ${toProfileSettings cfg.profiles.${name}})"
+            # write config to file
+            printf '%s\n' "$config" > ${configPath}/profile-${
+              cfg.profiles.${name}.id
+            }/settings.json
+            unset config
+          '') (lib.lists.remove "Default" (builtins.attrNames cfg.profiles)))
+
+          # add all declared profiles to profiles.json
+          ++ [''
+            # create profiles.json
+            touch ${configPath}/profiles.json
+            # Config has to be written to temporary variable because jq cannot edit files in place.
+            profiles="$(jq -s '.[0] + .[1]' ${configPath}/profiles.json ${
+              toJoplinProfiles cfg.profiles
+            })"
+            # write config to file
+            printf '%s\n' "$profiles" > ${configPath}/profiles.json
+            unset profiles
+          '']
+
+          # download plugins (WIP)
+          #++ (builtins.map (plugin-name: ''
+          #  ${pkgs.wget}/bin/wget --output-document ${configPath}/plugins/${plugin-name}.jpl https://github.com/joplin/plugins/raw/master/plugins/${plugin-name}/plugin.jpl
+          #'') cfg.plugins.installedPlugins)
+        ));
     };
   };
 }

tests/modules/programs/joplin-desktop/basic-configuration.json

@@ -1,6 +1,20 @@
 {
+  "editor": "kate",
+  "editor.autoMatchingBraces": true,
+  "editor.codeView": true,
+  "imageResizing": "alwaysAsk",
+  "locale": "en_GB",
+  "markdown.plugin.fountain": false,
+  "markdown.plugin.softbreaks": true,
   "newNoteFocus": "title",
+  "newTodoFocus": "title",
   "richTextBannerDismissed": true,
+  "spellChecker.languages": [
+    "en-GB",
+    "de-DE",
+    "fr-FR"
+  ],
   "sync.interval": 600,
-  "sync.target": 7
+  "theme": 2,
+  "trackLocation": false
 }

tests/modules/programs/joplin-desktop/basic-configuration.nix

@@ -1,14 +1,29 @@
 {
   programs.joplin-desktop = {
     enable = true;
-    sync = {
+    general = {
-      target = "dropbox";
+      editor = "kate";
-      interval = "10m";
+      language = "en_GB";
+    };
+    sync.interval = "10m";
+    appearance = { theme = "dark"; };
+    note = {
+      resizeLargeImages = "alwaysAsk";
+      newTodoFocus = "title";
+      newNoteFocus = "title";
+      saveGeoLocation = false;
+      autoPairBraces = true;
+    };
+    markdown = {
+      softbreaks = true;
+      fountain = false;
     };
     extraConfig = {
       "richTextBannerDismissed" = true;
-      "newNoteFocus" = "title";
+      "editor.codeView" = true;
+      "spellChecker.languages" = [ "en-GB" "de-DE" "fr-FR" ];
     };
+    profiles = { Default = { }; };
   };
 
   test.stubs.joplin-desktop = { };