direction: right

# Text

explanation: |md
  # CoronaCheck - Client Side Data model
  - **Changelog**
    - *1.5.1* Layout changes with d2lang
    - *1.5* Updated EventGroup with isDraft
    - *1.4* Added OriginHint and RemovedEvents
    - *1.3* Renamed EventGroup issued_at to expiryDate
    - *1.2* Added origin level, styling changes
    - *1.1* Added provider identifier, credential version to event table renamed event to EventGroup
    - *1.0* Removed 'valid until' fields as this is config-determined
    - *0.2* Matched terminology currently used in clients
    - *0.1* Initial version

  - **Authors**
     - Ivo, Bart, Rool
|

# Containers

wallet: {
  label: Wallet
  table: Table {
    shape: sql_table
    id: Int {constraint: primary_key}
    1abel: main
  }
  comment: |md
    This level is currently __YAGNI__ and will be  
    added once we support multiple people's QR's.
  |
  style.shadow: true
}

eventgroup: {
  label: EventGroup
  table: {
    shape: sql_table
    id: Int {constraint: primary_key}
    walletId: Int {constraint: foreign_key}
    expiryDate: Date 2012-04-15T10:01:00Z
    isDraft: Boolean true
    jsonData: Blob
    providerIdentifier: String {constraint: unique}
    type: vaccination|recovery|test
  }
  comment: |md
    **Note**: the jsonData can contain multiple  
      events with a single signature.
  |
  style.shadow: true
  style.multiple: true
}

greencard: {
  label: Greencard
  table: Table {
    shape: sql_table
    id: Int {constraint: primary_key}
    walletId: Int {constraint: foreign_key}
    type: eu|domestic
  }
  style.shadow: true
  style.multiple: true
}

origin: {
  label: Origin
  table: Table {
    shape: sql_table
    id: Int {constraint: primary_key}
    greencardId: Int {constraint: foreign_key}
    doseNumber: Int
    eventDate: Date
    expirationTime: Date
    type: vaccination|recovery|test
    validFrom: Date
  }
  style.shadow: true
  style.multiple: true
}

credential: {
  label: Credential
  table: Table {
    shape: sql_table
    id: Int {constraint: primary_key}
    greencardId: Int {constraint: foreign_key}
    data: Binary Data
    expirationTime: Date
    validFrom: Date
    version: Int
  }
  style.shadow: true
  style.multiple: true
}

removedevent: {
  label: RemovedEvent
  table: Table {
    shape: sql_table
    id: Int {constraint: primary_key}
    walletId: Int {constraint: foreign_key}
    eventDate: Date
    reason: String
    type: vaccination|recovery|test
  }
  style.shadow: true
  style.multiple: true
}

hint: {
  label: OriginHint
  table: Table {
    shape: sql_table
    id: Int {constraint: primary_key}
    originId: Int {constraint: foreign_key}
    hint: String
  }
  style.shadow: true
  style.multiple: true
}

# Connections

wallet -> eventgroup: "Data to be sent to signer: all events" {
  source-arrowhead: 0
  target-arrowhead: * {
    shape: diamond
  }
}
wallet -> greencard: {
  source-arrowhead: 0
  target-arrowhead: * {
    shape: diamond
  }
}
wallet -> removedEvent: "EventGroup metadata for eventgroups that are removed\ndue to identity mismatch or blocked events " {
  source-arrowhead: 0
  target-arrowhead: * {
    shape: diamond
  }
}

greencard -> origin: "This indicates what the\ngreencard was based upon" {
  source-arrowhead: 1
  target-arrowhead: * {
    shape: diamond
  }
}
greencard -> credential: "Only green card type domestic can have multiple\ncredentials, all others have a single credential" {
  source-arrowhead: 1
  target-arrowhead: * {
    shape: diamond
  }
}

origin -> hint: "Hints store more information\nfor an origin, i.e. event_from_dcc" {
  source-arrowhead: 1
  target-arrowhead: * {
    shape: diamond
  }
}