import Foundation
import SwiftData

/// Local persistence for the encounter graph using SwiftData (SQLite-backed).
///
/// The graph lives **on-device** by default. The user is in control of what
/// syncs to the server. Encounters are stored as anonymous silhouettes until
/// mutual consent promotes them to revealed connections.
@Model
final class GraphStore {

    var encounters: [Encounter] = []
    var connections: [Connection] = []
    var messages: [ChatMessage] = []

    init() {}

    // MARK: - Encounters

    func addEncounter(_ encounter: Encounter) {
        encounters.insert(encounter, at: 0)
    }

    func encounter(byToken token: String) -> Encounter? {
        encounters.first { $0.remoteAnonToken == token }
    }

    func updateStatus(_ status: EncounterStatus, for token: String) {
        guard let idx = encounters.firstIndex(where: { $0.remoteAnonToken == token }) else { return }
        encounters[idx].status = status
    }

    // MARK: - Connections

    func addConnection(_ connection: Connection) {
        connections.insert(connection, at: 0)
    }

    // MARK: - Messages

    func addMessage(_ message: ChatMessage) {
        messages.append(message)
    }
}