Implement strum::Display for all DomainEvents

[nanderstabel]

Description

The DomainEvent trait consists on an event_type method which should return the enum variant's name. Currently we implement this like so:

    fn event_type(&self) -> String {
        use ConnectionEvent::*;

        let event_type: &str = match self {
            SIOPv2AuthorizationResponseVerified { .. } => "SIOPv2AuthorizationResponseVerified",
        };
        event_type.to_string()
    }

Where we manually need to add match arms for each enum variant (event) that we want to add.

This is a bit cumbersome so a better solution for this would be to simply derive the strum::Display trait on all enums that implement DomainEvent, i.e.:

#[derive(Clone, Debug, Deserialize, PartialEq, Serialize, strum::Display)]
pub enum ConnectionEvent {
    SIOPv2AuthorizationResponseVerified { id_token: String },
}

impl DomainEvent for ConnectionEvent {
    fn event_type(&self) -> String {
        self.to_string()
    }
    ...

Motivation

Using this method is much less error-prone

Resources

n/a

To-do List

• derive strum::Display for all DomainEvent implementations