Documentation. Add conceptual model and description of commenting fea…

…ture (kgrzybek#169)

* Documentation. Add conceptual model and description of commenting feature.

* Documentstion. Add plantuml diagramm file for commenting feature.

README.md

@@ -193,6 +193,8 @@ A `Meeting Attendee` can bring guests to the `Meeting`. The number of guests all
 
 A `Meeting Attendee` can have one of two roles: `Attendee` or `Host`. A `Meeting` must have at least one `Host`. The `Host` is a special role which grants permission to edit `Meeting` information or change the attendees list.
 
+A `Member` can comment `Meetings`. A `Member` can reply to, like other `Comments`. `Organizer` manages commenting of `Meeting` by `Meeting Commenting Configuration`. `Organizer` can delete any `Comment`.
+
 Each `Meeting Group` must have an organizer with active `Subscription`. One organizer can cover 3 `Meeting Groups` by his `Subscription`.
 
 Additionally, Meeting organizer can set an `Event Fee`. Each `Meeting Attendee` is obliged to pay the fee. All guests should be paid by `Meeting Attendee` too.
@@ -230,6 +232,9 @@ PlantUML version:
 VisualParadigm version (not maintained, only for demonstration):
 ![](docs/Images/Conceptual_Model.png)
 
+**Conceptual Model of commenting feature**
+![](https://www.plantuml.com/plantuml/proxy?cache=no&src=https://raw.githubusercontent.com/kgrzybek/modular-monolith-with-ddd/master/docs/PlantUML/Commenting_Conceptual_Model.puml)
+
 ### 2.3 Event Storming
 
 While a Conceptual Model focuses on structures and relationships between them, **behavior** and **events** that occur in our domain are more important.

docs/PlantUML/Commenting_Conceptual_Model.puml

@@ -0,0 +1,17 @@
+@startuml
+
+object "Meeting" as Meeting
+object "Member" as Member
+object "Meeting Commenting Configuration" as MeetingCommentingConfiguration
+object "Meeting Comment" as MeetingComment
+object "Meeting Member Comment Like" as MeetingMemberCommentLike
+
+Meeting "1"-->"0..*" MeetingComment : has
+MeetingCommentingConfiguration "1"-->"1" Meeting : enables\ncommenting\nof
+MeetingComment "1"-->"0..*" MeetingMemberCommentLike : has
+MeetingComment "1"-->"0..*" MeetingComment : is reply to
+Member --> Meeting : comments
+Member --> MeetingComment : replies to,\nlikes
+Member --> MeetingCommentingConfiguration : configures
+
+@enduml