//
//  PageVisit.swift
//  Prisme
//
//  Author: Simon-Pierre Boucher <contact@spboucher.ai>
//

import Foundation
import SwiftData

/// One remembered page. The semantic history (CLAUDE.md §5, P0) is where
/// the free local model beats any cloud solution: the volume would be
/// unpayable through an API, and sending browsing history off-device is
/// unacceptable anyway. Visits from sensitive containers are never
/// recorded — not stored-and-filtered, simply never written.
@Model
final class PageVisit {
    @Attribute(.unique) var urlString: String
    var host: String
    var title: String
    /// Deterministic one-sentence essence (first sentence of the first
    /// paragraph) — searchable text, tier `none`.
    var gist: String
    var containerID: UUID
    var visitedAt: Date
    var visitCount: Int
    /// Hash of the extracted content at last visit — feeds the future
    /// temporal diff (P2).
    var contentHash: String
    /// BCP-47 code of the page's dominant language, so query vectors are
    /// only compared with vectors from the same embedding space.
    var languageCode: String?
    /// On-device sentence embedding of title + gist.
    var embedding: [Float]?

    init(
        urlString: String,
        host: String,
        title: String,
        gist: String,
        containerID: UUID,
        visitedAt: Date,
        contentHash: String,
        languageCode: String?,
        embedding: [Float]?
    ) {
        self.urlString = urlString
        self.host = host
        self.title = title
        self.gist = gist
        self.containerID = containerID
        self.visitedAt = visitedAt
        self.visitCount = 1
        self.contentHash = contentHash
        self.languageCode = languageCode
        self.embedding = embedding
    }
}