import Foundation

/// A fully revealed, mutually-consented connection between two present users.
///
/// Connections can **only** be created from a mutual `Encounter`. There is no
/// path to create one online — you must have been physically near each other.
struct Connection: Identifiable, Codable, Hashable {
    let id: UUID
    let encounterID: UUID
    let remoteUserID: String
    let displayName: String
    let createdAt: Date
    let lastMessageAt: Date?

    /// The E2E session key used for this conversation.
    let sessionKeyID: String

    init(
        id: UUID = UUID(),
        encounterID: UUID,
        remoteUserID: String,
        displayName: String,
        createdAt: Date = Date(),
        lastMessageAt: Date? = nil,
        sessionKeyID: String
    ) {
        self.id = id
        self.encounterID = encounterID
        self.remoteUserID = remoteUserID
        self.displayName = displayName
        self.createdAt = createdAt
        self.lastMessageAt = lastMessageAt
        self.sessionKeyID = sessionKeyID
    }
}