schema {
    query: Query
}

type Query {
    users: [User!]!
}

type User {
    id: ID!
    userName: String!
    displayName: String
    activated: Boolean!
    created: DateTimeUtc!
    lastOnline: DateTimeUtc
    preferences: UserPreferences!
}

# All account preferences for a single user
type UserPreferences {
    privacyPreference: PrivacyPreference!
    notificationPreference: NotificationPreference!
    securityPreference: SecurityPreference!
    # TODO: external servers
    externalServersPreference: ExternalServersPreference!
}

type PrivacyPreference {
    # Discovery on other servers
    discovery: RestrictionPolicy!
    discoveryUserLimit: [String!]
    discoveryServerLimit: [Url!]

    # Last seen online
    lastSeen: RestrictionPolicy!
    lastSeenUserLimit: [String!]
    lastSeenServerLimit: [Url!]
    # For enabled users/servers: Only give vague indications
    # e.g. recently, a long time ago
    lastSeenCourse: Boolean!

    # Describing informational text regarding the user
    info: RestrictionPolicy!
    infoUserLimit: [String!]
    infoServerLimit: [Url!]
}

type NotificationPreference {
    lockDetails: Boolean!
    doNotDisturb: Boolean!
}

type SecurityPreference {
    # One-purpose-passwords
    accountTokens: [ID!]!

    # The account's password hash
    passwordHash: String!
}

type ExternalServersPreference {
    privacyPreference: PrivacyPreference
    externalServers: RestrictionPolicy!
    externalServersLimit: [Url!]
}

# Everyone = Including all = Excluding none
# None = Including none = Excluding all
enum RestrictionPolicy {
    Everyone
    Excluding
    Including
    None
}