Add support for more generic notification

This is a start to have different kinds of notifications. It is
possible to be notified via e-mail, matrix or gotify. It also extends
the current "periodic query" for due items by allowing notification
over different channels. A "generic periodic query" variant is added
as well.

modules/webapp/src/main/elm/Messages/Comp/ChannelForm.elm

@@ -0,0 +1,47 @@
+{-
+   Copyright 2020 Eike K. & Contributors
+
+   SPDX-License-Identifier: AGPL-3.0-or-later
+-}
+
+
+module Messages.Comp.ChannelForm exposing
+    ( Texts
+    , de
+    , gb
+    )
+
+import Messages.Basics
+import Messages.Comp.NotificationGotifyForm
+import Messages.Comp.NotificationHttpForm
+import Messages.Comp.NotificationMailForm
+import Messages.Comp.NotificationMatrixForm
+
+
+type alias Texts =
+    { basics : Messages.Basics.Texts
+    , matrixForm : Messages.Comp.NotificationMatrixForm.Texts
+    , gotifyForm : Messages.Comp.NotificationGotifyForm.Texts
+    , mailForm : Messages.Comp.NotificationMailForm.Texts
+    , httpForm : Messages.Comp.NotificationHttpForm.Texts
+    }
+
+
+gb : Texts
+gb =
+    { basics = Messages.Basics.gb
+    , matrixForm = Messages.Comp.NotificationMatrixForm.gb
+    , gotifyForm = Messages.Comp.NotificationGotifyForm.gb
+    , mailForm = Messages.Comp.NotificationMailForm.gb
+    , httpForm = Messages.Comp.NotificationHttpForm.gb
+    }
+
+
+de : Texts
+de =
+    { basics = Messages.Basics.de
+    , matrixForm = Messages.Comp.NotificationMatrixForm.de
+    , gotifyForm = Messages.Comp.NotificationGotifyForm.de
+    , mailForm = Messages.Comp.NotificationMailForm.de
+    , httpForm = Messages.Comp.NotificationHttpForm.de
+    }

modules/webapp/src/main/elm/Messages/Comp/DueItemsTaskForm.elm

@@ -5,7 +5,7 @@
 -}
 
 
-module Messages.Comp.NotificationForm exposing
+module Messages.Comp.DueItemsTaskForm exposing
     ( Texts
     , de
     , gb
@@ -14,25 +14,23 @@ module Messages.Comp.NotificationForm exposing
 import Http
 import Messages.Basics
 import Messages.Comp.CalEventInput
+import Messages.Comp.ChannelForm
 import Messages.Comp.HttpError
+import Messages.Data.ChannelType
 
 
 type alias Texts =
     { basics : Messages.Basics.Texts
     , calEventInput : Messages.Comp.CalEventInput.Texts
     , httpError : Http.Error -> String
+    , channelForm : Messages.Comp.ChannelForm.Texts
     , reallyDeleteTask : String
     , startOnce : String
     , startTaskNow : String
-    , selectConnection : String
     , deleteThisTask : String
     , enableDisable : String
     , summary : String
     , summaryInfo : String
-    , sendVia : String
-    , sendViaInfo : String
-    , recipients : String
-    , recipientsInfo : String
     , tagsInclude : String
     , tagsIncludeInfo : String
     , tagsExclude : String
@@ -48,6 +46,9 @@ type alias Texts =
     , invalidCalEvent : String
     , remindDaysRequired : String
     , recipientsRequired : String
+    , queryLabel : String
+    , channelRequired : String
+    , channelHeader : Messages.Data.ChannelType.Texts
     }
 
 
@@ -56,18 +57,14 @@ gb =
     { basics = Messages.Basics.gb
     , calEventInput = Messages.Comp.CalEventInput.gb
     , httpError = Messages.Comp.HttpError.gb
+    , channelForm = Messages.Comp.ChannelForm.gb
     , reallyDeleteTask = "Really delete this notification task?"
     , startOnce = "Start Once"
     , startTaskNow = "Start this task now"
-    , selectConnection = "Select connection..."
     , deleteThisTask = "Delete this task"
     , enableDisable = "Enable or disable this task."
     , summary = "Summary"
     , summaryInfo = "Some human readable name, only for displaying"
-    , sendVia = "Send via"
-    , sendViaInfo = "The SMTP connection to use when sending notification mails."
-    , recipients = "Recipient(s)"
-    , recipientsInfo = "One or more mail addresses, confirm each by pressing 'Return'."
     , tagsInclude = "Tags Include (and)"
     , tagsIncludeInfo = "Items must have all the tags specified here."
     , tagsExclude = "Tags Exclude (or)"
@@ -87,6 +84,9 @@ gb =
     , invalidCalEvent = "The calendar event is not valid."
     , remindDaysRequired = "Remind-Days is required."
     , recipientsRequired = "At least one recipient is required."
+    , queryLabel = "Query"
+    , channelRequired = "A valid channel must be given."
+    , channelHeader = \ct -> "Connection details for " ++ Messages.Data.ChannelType.gb ct
     }
 
 
@@ -95,18 +95,14 @@ de =
     { basics = Messages.Basics.de
     , calEventInput = Messages.Comp.CalEventInput.de
     , httpError = Messages.Comp.HttpError.de
+    , channelForm = Messages.Comp.ChannelForm.gb
     , reallyDeleteTask = "Diesen Benachrichtigungsauftrag wirklich löschen?"
     , startOnce = "Jetzt starten"
     , startTaskNow = "Starte den Auftrag sofort"
-    , selectConnection = "Verbindung auswählen…"
     , deleteThisTask = "Den Auftrag löschen"
     , enableDisable = "Auftrag aktivieren oder deaktivieren"
     , summary = "Kurzbeschreibung"
     , summaryInfo = "Eine kurze lesbare Zusammenfassung, nur für die Anzeige"
-    , sendVia = "Senden via"
-    , sendViaInfo = "Die SMTP-Verbindung, die zum Senden der Benachrichtigungs-E-Mails verwendet werden soll."
-    , recipients = "Empfänger"
-    , recipientsInfo = "Eine oder mehrere E-Mail-Adressen, jede mit 'Eingabe' bestätigen."
     , tagsInclude = "Tags verknüpft (&&)"
     , tagsIncludeInfo = "Dokumente müssen alle diese Tags haben."
     , tagsExclude = "Tags nicht verknüpft (||)"
@@ -126,4 +122,7 @@ de =
     , invalidCalEvent = "Das Kalenderereignis ist nicht gültig."
     , remindDaysRequired = "'Fällig in Tagen' ist erforderlich."
     , recipientsRequired = "Mindestens ein Empfänger muss angegeben werden."
+    , queryLabel = "Abfrage"
+    , channelRequired = "Ein Versandkanal muss angegeben werden."
+    , channelHeader = \ct -> "Details für " ++ Messages.Data.ChannelType.de ct
     }

modules/webapp/src/main/elm/Messages/Comp/DueItemsTaskList.elm

@@ -5,7 +5,7 @@
 -}
 
 
-module Messages.Comp.NotificationTable exposing
+module Messages.Comp.DueItemsTaskList exposing
     ( Texts
     , de
     , gb

modules/webapp/src/main/elm/Messages/Comp/DueItemsTaskManage.elm

@@ -5,7 +5,7 @@
 -}
 
 
-module Messages.Comp.NotificationManage exposing
+module Messages.Comp.DueItemsTaskManage exposing
     ( Texts
     , de
     , gb
@@ -13,16 +13,18 @@ module Messages.Comp.NotificationManage exposing
 
 import Http
 import Messages.Basics
+import Messages.Comp.DueItemsTaskForm
+import Messages.Comp.DueItemsTaskList
 import Messages.Comp.HttpError
-import Messages.Comp.NotificationForm
-import Messages.Comp.NotificationTable
+import Messages.Data.ChannelType
 
 
 type alias Texts =
     { basics : Messages.Basics.Texts
-    , notificationForm : Messages.Comp.NotificationForm.Texts
-    , notificationTable : Messages.Comp.NotificationTable.Texts
+    , notificationForm : Messages.Comp.DueItemsTaskForm.Texts
+    , notificationTable : Messages.Comp.DueItemsTaskList.Texts
     , httpError : Http.Error -> String
+    , channelType : Messages.Data.ChannelType.Texts
     , newTask : String
     , createNewTask : String
     , taskCreated : String
@@ -35,9 +37,10 @@ type alias Texts =
 gb : Texts
 gb =
     { basics = Messages.Basics.gb
-    , notificationForm = Messages.Comp.NotificationForm.gb
-    , notificationTable = Messages.Comp.NotificationTable.gb
+    , notificationForm = Messages.Comp.DueItemsTaskForm.gb
+    , notificationTable = Messages.Comp.DueItemsTaskList.gb
     , httpError = Messages.Comp.HttpError.gb
+    , channelType = Messages.Data.ChannelType.gb
     , newTask = "New Task"
     , createNewTask = "Create a new notification task"
     , taskCreated = "Task created."
@@ -50,9 +53,10 @@ gb =
 de : Texts
 de =
     { basics = Messages.Basics.de
-    , notificationForm = Messages.Comp.NotificationForm.de
-    , notificationTable = Messages.Comp.NotificationTable.de
+    , notificationForm = Messages.Comp.DueItemsTaskForm.de
+    , notificationTable = Messages.Comp.DueItemsTaskList.de
     , httpError = Messages.Comp.HttpError.de
+    , channelType = Messages.Data.ChannelType.de
     , newTask = "Neuer Auftrag"
     , createNewTask = "Erstelle einen neuen Benachrichtigungsauftrag"
     , taskCreated = "Auftrag erstellt."

modules/webapp/src/main/elm/Messages/Comp/EventSample.elm

@@ -0,0 +1,40 @@
+{-
+   Copyright 2020 Eike K. & Contributors
+
+   SPDX-License-Identifier: AGPL-3.0-or-later
+-}
+
+
+module Messages.Comp.EventSample exposing
+    ( Texts
+    , de
+    , gb
+    )
+
+import Data.EventType exposing (EventType)
+import Http
+import Messages.Comp.HttpError
+import Messages.Data.EventType
+
+
+type alias Texts =
+    { eventType : EventType -> Messages.Data.EventType.Texts
+    , httpError : Http.Error -> String
+    , selectEvent : String
+    }
+
+
+gb : Texts
+gb =
+    { eventType = Messages.Data.EventType.gb
+    , httpError = Messages.Comp.HttpError.gb
+    , selectEvent = "Select event…"
+    }
+
+
+de : Texts
+de =
+    { eventType = Messages.Data.EventType.de
+    , httpError = Messages.Comp.HttpError.de
+    , selectEvent = "Ereignis wählen…"
+    }

modules/webapp/src/main/elm/Messages/Comp/NotificationGotifyForm.elm

@@ -0,0 +1,37 @@
+{-
+   Copyright 2020 Eike K. & Contributors
+
+   SPDX-License-Identifier: AGPL-3.0-or-later
+-}
+
+
+module Messages.Comp.NotificationGotifyForm exposing
+    ( Texts
+    , de
+    , gb
+    )
+
+import Messages.Basics
+
+
+type alias Texts =
+    { basics : Messages.Basics.Texts
+    , gotifyUrl : String
+    , appKey : String
+    }
+
+
+gb : Texts
+gb =
+    { basics = Messages.Basics.gb
+    , gotifyUrl = "Gotify URL"
+    , appKey = "App Key"
+    }
+
+
+de : Texts
+de =
+    { basics = Messages.Basics.de
+    , gotifyUrl = "Gotify URL"
+    , appKey = "App Key"
+    }

modules/webapp/src/main/elm/Messages/Comp/NotificationHookForm.elm

@@ -0,0 +1,75 @@
+{-
+   Copyright 2020 Eike K. & Contributors
+
+   SPDX-License-Identifier: AGPL-3.0-or-later
+-}
+
+
+module Messages.Comp.NotificationHookForm exposing
+    ( Texts
+    , de
+    , gb
+    )
+
+import Data.EventType exposing (EventType)
+import Messages.Basics
+import Messages.Comp.ChannelForm
+import Messages.Comp.EventSample
+import Messages.Data.ChannelType
+import Messages.Data.EventType
+
+
+type alias Texts =
+    { basics : Messages.Basics.Texts
+    , channelForm : Messages.Comp.ChannelForm.Texts
+    , eventType : EventType -> Messages.Data.EventType.Texts
+    , eventSample : Messages.Comp.EventSample.Texts
+    , channelHeader : Messages.Data.ChannelType.Texts
+    , enableDisable : String
+    , eventsInfo : String
+    , selectEvents : String
+    , events : String
+    , samplePayload : String
+    , toggleAllEvents : String
+    , eventFilter : String
+    , eventFilterInfo : String
+    , eventFilterClickForHelp : String
+    }
+
+
+gb : Texts
+gb =
+    { basics = Messages.Basics.gb
+    , channelForm = Messages.Comp.ChannelForm.gb
+    , eventType = Messages.Data.EventType.gb
+    , eventSample = Messages.Comp.EventSample.gb
+    , channelHeader = Messages.Data.ChannelType.gb
+    , enableDisable = "Enabled / Disabled"
+    , eventsInfo = "Select events that trigger this webhook"
+    , selectEvents = "Select…"
+    , events = "Events"
+    , samplePayload = "Sample Payload"
+    , toggleAllEvents = "Notify on all events"
+    , eventFilter = "Event Filter Expression"
+    , eventFilterInfo = "Optional specify an expression to filter events based on their JSON structure."
+    , eventFilterClickForHelp = "Click here for help"
+    }
+
+
+de : Texts
+de =
+    { basics = Messages.Basics.de
+    , channelForm = Messages.Comp.ChannelForm.de
+    , eventType = Messages.Data.EventType.de
+    , eventSample = Messages.Comp.EventSample.de
+    , channelHeader = Messages.Data.ChannelType.de
+    , enableDisable = "Aktiviert / Deaktivert"
+    , eventsInfo = "Wähle die Ereignisse, die diesen webhook auslösen"
+    , selectEvents = "Wähle…"
+    , events = "Ereignisse"
+    , samplePayload = "Beispieldaten"
+    , toggleAllEvents = "Bei allen Ereignissen"
+    , eventFilter = "Ereignisfilter"
+    , eventFilterInfo = "Optionaler Ausdruck zum filtern von Ereignissen auf Basis ihrer JSON Struktur."
+    , eventFilterClickForHelp = "Klicke für Hilfe"
+    }

modules/webapp/src/main/elm/Messages/Comp/NotificationHookManage.elm

@@ -0,0 +1,106 @@
+{-
+   Copyright 2020 Eike K. & Contributors
+
+   SPDX-License-Identifier: AGPL-3.0-or-later
+-}
+
+
+module Messages.Comp.NotificationHookManage exposing
+    ( Texts
+    , de
+    , gb
+    )
+
+import Html exposing (Html, text)
+import Http
+import Messages.Basics
+import Messages.Comp.HttpError
+import Messages.Comp.NotificationHookForm
+import Messages.Comp.NotificationHookTable
+import Messages.Data.ChannelType
+
+
+type alias Texts =
+    { basics : Messages.Basics.Texts
+    , notificationForm : Messages.Comp.NotificationHookForm.Texts
+    , notificationTable : Messages.Comp.NotificationHookTable.Texts
+    , httpError : Http.Error -> String
+    , channelType : Messages.Data.ChannelType.Texts
+    , newHook : String
+    , matrix : String
+    , gotify : String
+    , email : String
+    , httpRequest : String
+    , hookCreated : String
+    , hookUpdated : String
+    , hookStarted : String
+    , hookDeleted : String
+    , deleteThisHook : String
+    , reallyDeleteHook : String
+    , formInvalid : String
+    , invalidJsonFilter : String -> String
+    , integrate : String
+    , intoDocspell : String
+    , postRequestInfo : String
+    , updateWebhook : String
+    , addWebhook : String
+    , notifyEmailInfo : String
+    }
+
+
+gb : Texts
+gb =
+    { basics = Messages.Basics.gb
+    , notificationForm = Messages.Comp.NotificationHookForm.gb
+    , notificationTable = Messages.Comp.NotificationHookTable.gb
+    , httpError = Messages.Comp.HttpError.gb
+    , channelType = Messages.Data.ChannelType.gb
+    , newHook = "New Webhook"
+    , matrix = "Matrix"
+    , gotify = "Gotify"
+    , email = "E-Mail"
+    , httpRequest = "HTTP Request"
+    , hookCreated = "Webhook created"
+    , hookUpdated = "Webhook updated"
+    , hookStarted = "Webhook executed"
+    , hookDeleted = "Webhook deleted"
+    , deleteThisHook = "Delete this webhook"
+    , reallyDeleteHook = "Really delete this webhook?"
+    , formInvalid = "Please fill in all required fields"
+    , invalidJsonFilter = \m -> "Event filter invalid: " ++ m
+    , integrate = "Integrate"
+    , intoDocspell = "into Docspell"
+    , postRequestInfo = "Docspell will send POST requests with JSON payload."
+    , updateWebhook = "Update webhook"
+    , addWebhook = "Add new webhook"
+    , notifyEmailInfo = "Get notified via e-mail."
+    }
+
+
+de : Texts
+de =
+    { basics = Messages.Basics.de
+    , notificationForm = Messages.Comp.NotificationHookForm.de
+    , notificationTable = Messages.Comp.NotificationHookTable.de
+    , httpError = Messages.Comp.HttpError.de
+    , channelType = Messages.Data.ChannelType.de
+    , newHook = "Neuer Webhook"
+    , matrix = "Matrix"
+    , gotify = "Gotify"
+    , email = "E-Mail"
+    , httpRequest = "HTTP Request"
+    , hookCreated = "Webhook erstellt"
+    , hookUpdated = "Webhook aktualisiert"
+    , hookStarted = "Webhook ausgeführt"
+    , hookDeleted = "Webhook gelöscht"
+    , deleteThisHook = "Diesen Webhook löschen"
+    , reallyDeleteHook = "Den webhook wirklich löschen?"
+    , formInvalid = "Bitte alle erforderlichen Felder ausfüllen"
+    , invalidJsonFilter = \m -> "Ereignisfilter ist falsch: " ++ m
+    , integrate = "Integriere"
+    , intoDocspell = "in Docspell"
+    , postRequestInfo = "Docspell wird JSON POST requests senden."
+    , updateWebhook = "Webhook aktualisieren"
+    , addWebhook = "Neuen Webhook hinzufügen"
+    , notifyEmailInfo = "Werde per E-Mail benachrichtigt."
+    }

modules/webapp/src/main/elm/Messages/Comp/NotificationHookTable.elm

@@ -0,0 +1,45 @@
+{-
+   Copyright 2020 Eike K. & Contributors
+
+   SPDX-License-Identifier: AGPL-3.0-or-later
+-}
+
+
+module Messages.Comp.NotificationHookTable exposing
+    ( Texts
+    , de
+    , gb
+    )
+
+import Data.EventType exposing (EventType)
+import Messages.Basics
+import Messages.Data.EventType
+
+
+type alias Texts =
+    { basics : Messages.Basics.Texts
+    , eventType : EventType -> Messages.Data.EventType.Texts
+    , enabled : String
+    , channel : String
+    , events : String
+    }
+
+
+gb : Texts
+gb =
+    { basics = Messages.Basics.gb
+    , eventType = Messages.Data.EventType.gb
+    , enabled = "Enabled"
+    , channel = "Channel"
+    , events = "Events"
+    }
+
+
+de : Texts
+de =
+    { basics = Messages.Basics.de
+    , eventType = Messages.Data.EventType.de
+    , enabled = "Aktiv"
+    , channel = "Kanal"
+    , events = "Ereignisse"
+    }

modules/webapp/src/main/elm/Messages/Comp/NotificationHttpForm.elm

@@ -0,0 +1,34 @@
+{-
+   Copyright 2020 Eike K. & Contributors
+
+   SPDX-License-Identifier: AGPL-3.0-or-later
+-}
+
+
+module Messages.Comp.NotificationHttpForm exposing
+    ( Texts
+    , de
+    , gb
+    )
+
+import Messages.Basics
+
+
+type alias Texts =
+    { basics : Messages.Basics.Texts
+    , httpUrl : String
+    }
+
+
+gb : Texts
+gb =
+    { basics = Messages.Basics.gb
+    , httpUrl = "Http URL"
+    }
+
+
+de : Texts
+de =
+    { basics = Messages.Basics.de
+    , httpUrl = "URL"
+    }

modules/webapp/src/main/elm/Messages/Comp/NotificationMailForm.elm

@@ -0,0 +1,49 @@
+{-
+   Copyright 2020 Eike K. & Contributors
+
+   SPDX-License-Identifier: AGPL-3.0-or-later
+-}
+
+
+module Messages.Comp.NotificationMailForm exposing
+    ( Texts
+    , de
+    , gb
+    )
+
+import Messages.Basics
+
+
+type alias Texts =
+    { basics : Messages.Basics.Texts
+    , selectConnection : String
+    , sendVia : String
+    , sendViaInfo : String
+    , recipients : String
+    , recipientsInfo : String
+    , recipientsRequired : String
+    }
+
+
+gb : Texts
+gb =
+    { basics = Messages.Basics.gb
+    , selectConnection = "Select connection..."
+    , sendVia = "Send via"
+    , sendViaInfo = "The SMTP connection to use when sending notification mails."
+    , recipients = "Recipient(s)"
+    , recipientsInfo = "One or more mail addresses, confirm each by pressing 'Return'."
+    , recipientsRequired = "At least one recipient is required."
+    }
+
+
+de : Texts
+de =
+    { basics = Messages.Basics.de
+    , selectConnection = "Verbindung auswählen…"
+    , sendVia = "Senden via"
+    , sendViaInfo = "Die SMTP-Verbindung, die zum Senden der Benachrichtigungs-E-Mails verwendet werden soll."
+    , recipients = "Empfänger"
+    , recipientsInfo = "Eine oder mehrere E-Mail-Adressen, jede mit 'Eingabe' bestätigen."
+    , recipientsRequired = "Mindestens ein Empfänger muss angegeben werden."
+    }

modules/webapp/src/main/elm/Messages/Comp/NotificationMatrixForm.elm

@@ -0,0 +1,40 @@
+{-
+   Copyright 2020 Eike K. & Contributors
+
+   SPDX-License-Identifier: AGPL-3.0-or-later
+-}
+
+
+module Messages.Comp.NotificationMatrixForm exposing
+    ( Texts
+    , de
+    , gb
+    )
+
+import Messages.Basics
+
+
+type alias Texts =
+    { basics : Messages.Basics.Texts
+    , homeServer : String
+    , roomId : String
+    , accessKey : String
+    }
+
+
+gb : Texts
+gb =
+    { basics = Messages.Basics.gb
+    , homeServer = "Homeserver URL"
+    , roomId = "Room ID"
+    , accessKey = "Access Token"
+    }
+
+
+de : Texts
+de =
+    { basics = Messages.Basics.de
+    , homeServer = "Homeserver URL"
+    , roomId = "Room ID"
+    , accessKey = "Access Token"
+    }

modules/webapp/src/main/elm/Messages/Comp/PeriodicQueryTaskForm.elm

@@ -0,0 +1,99 @@
+{-
+   Copyright 2020 Eike K. & Contributors
+
+   SPDX-License-Identifier: AGPL-3.0-or-later
+-}
+
+
+module Messages.Comp.PeriodicQueryTaskForm exposing
+    ( Texts
+    , de
+    , gb
+    )
+
+import Data.ChannelType exposing (ChannelType)
+import Http
+import Messages.Basics
+import Messages.Comp.CalEventInput
+import Messages.Comp.ChannelForm
+import Messages.Comp.HttpError
+import Messages.Data.ChannelType
+
+
+type alias Texts =
+    { basics : Messages.Basics.Texts
+    , calEventInput : Messages.Comp.CalEventInput.Texts
+    , channelForm : Messages.Comp.ChannelForm.Texts
+    , httpError : Http.Error -> String
+    , reallyDeleteTask : String
+    , startOnce : String
+    , startTaskNow : String
+    , deleteThisTask : String
+    , enableDisable : String
+    , summary : String
+    , summaryInfo : String
+    , schedule : String
+    , scheduleClickForHelp : String
+    , scheduleInfo : String
+    , queryLabel : String
+    , invalidCalEvent : String
+    , channelRequired : String
+    , queryStringRequired : String
+    , channelHeader : ChannelType -> String
+    }
+
+
+gb : Texts
+gb =
+    { basics = Messages.Basics.gb
+    , calEventInput = Messages.Comp.CalEventInput.gb
+    , channelForm = Messages.Comp.ChannelForm.gb
+    , httpError = Messages.Comp.HttpError.gb
+    , reallyDeleteTask = "Really delete this notification task?"
+    , startOnce = "Start Once"
+    , startTaskNow = "Start this task now"
+    , deleteThisTask = "Delete this task"
+    , enableDisable = "Enable or disable this task."
+    , summary = "Summary"
+    , summaryInfo = "Some human readable name, only for displaying"
+    , schedule = "Schedule"
+    , scheduleClickForHelp = "Click here for help"
+    , scheduleInfo =
+        "Specify how often and when this task should run. "
+            ++ "Use English 3-letter weekdays. Either a single value, "
+            ++ "a list (ex. 1,2,3), a range (ex. 1..3) or a '*' (meaning all) "
+            ++ "is allowed for each part."
+    , invalidCalEvent = "The calendar event is not valid."
+    , queryLabel = "Query"
+    , channelRequired = "A valid channel must be given."
+    , queryStringRequired = "A query string must be supplied"
+    , channelHeader = \ct -> "Connection details for " ++ Messages.Data.ChannelType.gb ct
+    }
+
+
+de : Texts
+de =
+    { basics = Messages.Basics.de
+    , calEventInput = Messages.Comp.CalEventInput.de
+    , channelForm = Messages.Comp.ChannelForm.de
+    , httpError = Messages.Comp.HttpError.de
+    , reallyDeleteTask = "Diesen Benachrichtigungsauftrag wirklich löschen?"
+    , startOnce = "Jetzt starten"
+    , startTaskNow = "Starte den Auftrag sofort"
+    , deleteThisTask = "Den Auftrag löschen"
+    , enableDisable = "Auftrag aktivieren oder deaktivieren"
+    , summary = "Kurzbeschreibung"
+    , summaryInfo = "Eine kurze lesbare Zusammenfassung, nur für die Anzeige"
+    , schedule = "Zeitplan"
+    , scheduleClickForHelp = "Klicke für Hilfe"
+    , scheduleInfo =
+        "Gib an, wie oft und wann der Auftrag laufen soll. "
+            ++ "Verwende englische 3-Buchstaben Wochentage. Entweder ein einzelner Wert, "
+            ++ "eine Liste (wie `1,2,3`), eine Bereich (wie `1..3`) oder ein '*' (für alle) "
+            ++ "ist mögich für jeden Teil."
+    , invalidCalEvent = "Das Kalenderereignis ist nicht gültig."
+    , queryLabel = "Abfrage"
+    , channelRequired = "Ein Versandkanal muss angegeben werden."
+    , queryStringRequired = "Eine Suchabfrage muss angegeben werden."
+    , channelHeader = \ct -> "Details für " ++ Messages.Data.ChannelType.de ct
+    }

modules/webapp/src/main/elm/Messages/Comp/PeriodicQueryTaskList.elm

@@ -0,0 +1,43 @@
+{-
+   Copyright 2020 Eike K. & Contributors
+
+   SPDX-License-Identifier: AGPL-3.0-or-later
+-}
+
+
+module Messages.Comp.PeriodicQueryTaskList exposing
+    ( Texts
+    , de
+    , gb
+    )
+
+import Messages.Basics
+
+
+type alias Texts =
+    { basics : Messages.Basics.Texts
+    , summary : String
+    , schedule : String
+    , connection : String
+    , recipients : String
+    }
+
+
+gb : Texts
+gb =
+    { basics = Messages.Basics.gb
+    , summary = "Summary"
+    , schedule = "Schedule"
+    , connection = "Connection"
+    , recipients = "Recipients"
+    }
+
+
+de : Texts
+de =
+    { basics = Messages.Basics.de
+    , summary = "Kurzbeschreibung"
+    , schedule = "Zeitplan"
+    , connection = "Verbindung"
+    , recipients = "Empfänger"
+    }

modules/webapp/src/main/elm/Messages/Comp/PeriodicQueryTaskManage.elm

@@ -0,0 +1,78 @@
+{-
+   Copyright 2020 Eike K. & Contributors
+
+   SPDX-License-Identifier: AGPL-3.0-or-later
+-}
+
+
+module Messages.Comp.PeriodicQueryTaskManage exposing
+    ( Texts
+    , de
+    , gb
+    )
+
+import Http
+import Messages.Basics
+import Messages.Comp.HttpError
+import Messages.Comp.PeriodicQueryTaskForm
+import Messages.Comp.PeriodicQueryTaskList
+import Messages.Data.ChannelType
+
+
+type alias Texts =
+    { basics : Messages.Basics.Texts
+    , notificationForm : Messages.Comp.PeriodicQueryTaskForm.Texts
+    , notificationTable : Messages.Comp.PeriodicQueryTaskList.Texts
+    , httpError : Http.Error -> String
+    , channelType : Messages.Data.ChannelType.Texts
+    , newTask : String
+    , createNewTask : String
+    , taskCreated : String
+    , taskUpdated : String
+    , taskStarted : String
+    , taskDeleted : String
+    , matrix : String
+    , gotify : String
+    , email : String
+    , httpRequest : String
+    }
+
+
+gb : Texts
+gb =
+    { basics = Messages.Basics.gb
+    , notificationForm = Messages.Comp.PeriodicQueryTaskForm.gb
+    , notificationTable = Messages.Comp.PeriodicQueryTaskList.gb
+    , httpError = Messages.Comp.HttpError.gb
+    , channelType = Messages.Data.ChannelType.gb
+    , newTask = "New Task"
+    , createNewTask = "Create a new notification task"
+    , taskCreated = "Task created."
+    , taskUpdated = "Task updated."
+    , taskStarted = "Task started."
+    , taskDeleted = "Task deleted."
+    , matrix = "Matrix"
+    , gotify = "Gotify"
+    , email = "E-Mail"
+    , httpRequest = "HTTP Request"
+    }
+
+
+de : Texts
+de =
+    { basics = Messages.Basics.de
+    , notificationForm = Messages.Comp.PeriodicQueryTaskForm.de
+    , notificationTable = Messages.Comp.PeriodicQueryTaskList.de
+    , httpError = Messages.Comp.HttpError.de
+    , channelType = Messages.Data.ChannelType.de
+    , newTask = "Neuer Auftrag"
+    , createNewTask = "Erstelle einen neuen Benachrichtigungsauftrag"
+    , taskCreated = "Auftrag erstellt."
+    , taskUpdated = "Auftrag aktualisiert."
+    , taskStarted = "Auftrag gestartet."
+    , taskDeleted = "Auftrag gelöscht."
+    , matrix = "Matrix"
+    , gotify = "Gotify"
+    , email = "E-Mail"
+    , httpRequest = "HTTP Request"
+    }

modules/webapp/src/main/elm/Messages/Data/ChannelType.elm

@@ -0,0 +1,46 @@
+{-
+   Copyright 2020 Eike K. & Contributors
+
+   SPDX-License-Identifier: AGPL-3.0-or-later
+-}
+
+
+module Messages.Data.ChannelType exposing (Texts, de, gb)
+
+import Data.ChannelType exposing (ChannelType)
+
+
+type alias Texts =
+    ChannelType -> String
+
+
+gb : Texts
+gb ct =
+    case ct of
+        Data.ChannelType.Matrix ->
+            "Matrix"
+
+        Data.ChannelType.Gotify ->
+            "Gotify"
+
+        Data.ChannelType.Mail ->
+            "E-Mail"
+
+        Data.ChannelType.Http ->
+            "HTTP request"
+
+
+de : Texts
+de ct =
+    case ct of
+        Data.ChannelType.Matrix ->
+            "Matrix"
+
+        Data.ChannelType.Gotify ->
+            "Gotify"
+
+        Data.ChannelType.Mail ->
+            "E-Mail"
+
+        Data.ChannelType.Http ->
+            "HTTP Request"

modules/webapp/src/main/elm/Messages/Data/EventType.elm

@@ -0,0 +1,78 @@
+{-
+   Copyright 2020 Eike K. & Contributors
+
+   SPDX-License-Identifier: AGPL-3.0-or-later
+-}
+
+
+module Messages.Data.EventType exposing
+    ( Texts
+    , de
+    , gb
+    )
+
+import Data.EventType exposing (EventType(..))
+
+
+type alias Texts =
+    { name : String
+    , info : String
+    }
+
+
+gb : EventType -> Texts
+gb et =
+    case et of
+        TagsChanged ->
+            { name = "Tags changed"
+            , info = "Whenever a tag on an item is added or removed"
+            }
+
+        SetFieldValue ->
+            { name = "Set field value"
+            , info = "Whenever a custom field is set to a value"
+            }
+
+        DeleteFieldValue ->
+            { name = "Delete field value"
+            , info = "Whenever a custom field is removed"
+            }
+
+        JobSubmitted ->
+            { name = "Job submitted"
+            , info = "Whenever a new job is submitted"
+            }
+
+        JobDone ->
+            { name = "Job done"
+            , info = "Whenever a new job finished"
+            }
+
+
+de : EventType -> Texts
+de et =
+    case et of
+        TagsChanged ->
+            { name = "Tags geändert"
+            , info = "Wenn ein tag hinzugefügt oder entfernt wird"
+            }
+
+        SetFieldValue ->
+            { name = "Benutzerfeldwert ändert"
+            , info = "Wenn für ein Benutzerfeld ein Wert gesetzt wird"
+            }
+
+        DeleteFieldValue ->
+            { name = "Benutzerfeldwert entfernt"
+            , info = "Wenn der Wert für ein Benuzterfeld entfernt wird"
+            }
+
+        JobSubmitted ->
+            { name = "Auftrag gestartet"
+            , info = "Wenn ein neuer Auftrag gestartet wird"
+            }
+
+        JobDone ->
+            { name = "Auftrag beendet"
+            , info = "Wenn ein Auftrag beendet wurde"
+            }

modules/webapp/src/main/elm/Messages/Page/UserSettings.elm

@@ -12,10 +12,12 @@ module Messages.Page.UserSettings exposing
     )
 
 import Messages.Comp.ChangePasswordForm
+import Messages.Comp.DueItemsTaskManage
 import Messages.Comp.EmailSettingsManage
 import Messages.Comp.ImapSettingsManage
-import Messages.Comp.NotificationManage
+import Messages.Comp.NotificationHookManage
 import Messages.Comp.OtpSetup
+import Messages.Comp.PeriodicQueryTaskManage
 import Messages.Comp.ScanMailboxManage
 import Messages.Comp.UiSettingsManage
 
@@ -25,8 +27,10 @@ type alias Texts =
     , uiSettingsManage : Messages.Comp.UiSettingsManage.Texts
     , emailSettingsManage : Messages.Comp.EmailSettingsManage.Texts
     , imapSettingsManage : Messages.Comp.ImapSettingsManage.Texts
-    , notificationManage : Messages.Comp.NotificationManage.Texts
+    , notificationManage : Messages.Comp.DueItemsTaskManage.Texts
     , scanMailboxManage : Messages.Comp.ScanMailboxManage.Texts
+    , notificationHookManage : Messages.Comp.NotificationHookManage.Texts
+    , periodicQueryTask : Messages.Comp.PeriodicQueryTaskManage.Texts
     , otpSetup : Messages.Comp.OtpSetup.Texts
     , userSettings : String
     , uiSettings : String
@@ -36,11 +40,16 @@ type alias Texts =
     , emailSettingImap : String
     , changePassword : String
     , uiSettingsInfo : String
-    , notificationInfoText : String
-    , notificationRemindDaysInfo : String
     , scanMailboxInfo1 : String
     , scanMailboxInfo2 : String
     , otpMenu : String
+    , webhooks : String
+    , genericQueries : String
+    , dueItems : String
+    , notificationInfoText : String
+    , webhookInfoText : String
+    , dueItemsInfoText : String
+    , periodicQueryInfoText : String
     }
 
 
@@ -50,8 +59,10 @@ gb =
     , uiSettingsManage = Messages.Comp.UiSettingsManage.gb
     , emailSettingsManage = Messages.Comp.EmailSettingsManage.gb
     , imapSettingsManage = Messages.Comp.ImapSettingsManage.gb
-    , notificationManage = Messages.Comp.NotificationManage.gb
+    , notificationManage = Messages.Comp.DueItemsTaskManage.gb
     , scanMailboxManage = Messages.Comp.ScanMailboxManage.gb
+    , notificationHookManage = Messages.Comp.NotificationHookManage.gb
+    , periodicQueryTask = Messages.Comp.PeriodicQueryTaskManage.gb
     , otpSetup = Messages.Comp.OtpSetup.gb
     , userSettings = "User Settings"
     , uiSettings = "UI Settings"
@@ -63,13 +74,6 @@ gb =
     , uiSettingsInfo =
         "These settings only affect the web ui. They are stored in the browser, "
             ++ "so they are separated between browsers and devices."
-    , notificationInfoText =
-        """
-            Docspell can notify you once the due dates of your items
-            come closer. Notification is done via e-mail. You need to
-            provide a connection in your e-mail settings."""
-    , notificationRemindDaysInfo =
-        "Docspell finds all items that are due in *Remind Days* days and sends this list via e-mail."
     , scanMailboxInfo1 =
         "Docspell can scan folders of your mailbox to import your mails. "
             ++ "You need to provide a connection in "
@@ -85,6 +89,28 @@ gb =
             adjust the schedule to avoid reading over the same mails
             again."""
     , otpMenu = "Two Factor Authentication"
+    , webhooks = "Webhooks"
+    , genericQueries = "Generic Queries"
+    , dueItems = "Due Items Query"
+    , notificationInfoText = """
+
+Docspell can send notification messages on various events. You can
+choose from these channels to send messages:
+[Matrix](https://matrix.org), [Gotify](https://gotify.net) or E-Mail.
+At last you can send a plain http request with the event details in
+its payload.
+
+Additionally, you can setup queries that are executed periodically.
+The results are send as a notification message.
+
+When creating a new notification task, choose first the communication
+channel.
+
+"""
+    , webhookInfoText = """Webhooks execute http request upon certain events in docspell.
+"""
+    , dueItemsInfoText = """Docspell can notify you once the due dates of your items come closer.  """
+    , periodicQueryInfoText = "You can define a custom query that gets executed periodically."
     }
 
 
@@ -94,8 +120,10 @@ de =
     , uiSettingsManage = Messages.Comp.UiSettingsManage.de
     , emailSettingsManage = Messages.Comp.EmailSettingsManage.de
     , imapSettingsManage = Messages.Comp.ImapSettingsManage.de
-    , notificationManage = Messages.Comp.NotificationManage.de
+    , notificationManage = Messages.Comp.DueItemsTaskManage.de
     , scanMailboxManage = Messages.Comp.ScanMailboxManage.de
+    , notificationHookManage = Messages.Comp.NotificationHookManage.de
+    , periodicQueryTask = Messages.Comp.PeriodicQueryTaskManage.de
     , otpSetup = Messages.Comp.OtpSetup.de
     , userSettings = "Benutzereinstellung"
     , uiSettings = "Oberfläche"
@@ -106,13 +134,6 @@ de =
     , changePassword = "Passwort ändern"
     , uiSettingsInfo =
         "Diese Einstellungen sind für die Web-Oberfläche."
-    , notificationInfoText =
-        """
-         Docspell kann eine E-Mail versenden, sobald das
-         Fälligkeitsdatum von Dokumenten näher kommt. Dafür muss eine
-         E-Mail-SMTP-Verbindung konfiguriert werden.."""
-    , notificationRemindDaysInfo =
-        "Docspell sucht Dokumente die in X Tagen fällig sind und sendet diese Liste als E-Mail."
     , scanMailboxInfo1 =
         """Docspell kann Postfächer durchsuchen und E-Mails importieren. Dafür sind
 E-Mail-Einstellungen (IMAP) notwendig."""
@@ -129,4 +150,26 @@ E-Mail-Einstellungen (IMAP) notwendig."""
             gleichen E-Mails möglichst nicht noch einmal eingelesen
             werden."""
     , otpMenu = "Zwei-Faktor-Authentifizierung"
+    , webhooks = "Webhooks"
+    , genericQueries = "Periodische Abfragen"
+    , dueItems = "Fällige Dokumente"
+    , notificationInfoText = """
+
+Docspell kann Benachrichtigungen bei gewissen Ereignissen versenden.
+Es kann aus diesen Versandkanälen gewählt werden:
+[Matrix](https://matrix.org), [Gotify](https://gotify.net) oder
+E-Mail. Zusätzlich kann das HTTP request direkt empfangen werden, was
+alle Details zu einem Ereignis enthält.
+
+
+Ausserdem können periodische Suchabfragen erstellt werden, dessen
+Ergebnis dann als Benachrichtigung versendet wird.
+
+Beim Erstellen eines neuen Auftrags muss zunächst der gewünschte
+Versandkanal gewählt werden.
+
+"""
+    , webhookInfoText = """Webhooks versenden HTTP Requests wenn bestimmte Ereignisse in Docspell auftreten."""
+    , dueItemsInfoText = """Docspell kann dich benachrichtigen, sobald das Fälligkeitsdatum von Dokumenten näher kommt. """
+    , periodicQueryInfoText = "Hier können beliebige Abfragen definiert werden, welche regelmäßig ausgeführt werden."
     }