//
//  SearchFilter.swift
//  Focale
//
//  Author: Simon-Pierre Boucher
//  Contact: contact@spboucher.ai
//
//  A natural query becomes this structured filter, which runs on the
//  local database — instant on 40 000 photos as on 400 (CLAUDE.md §7).
//  The model analyzes the query; it never walks the photos.
//

import Foundation

struct SearchFilter: Codable, Sendable, Equatable {
    var dateRange: ClosedRange<Date>?
    var kinds: [String]          // PhotoKind raw values
    var textTerms: [String]      // matched against OCR text
    var entityTerms: [String]    // matched against entities / labels / hints
    var placeTerms: [String]
    var projectTerm: String?
    var similarToIdentifier: String?   // "photos like this one"
    var favoritesOnly: Bool
    var actionableOnly: Bool     // "documents avec une date d'expiration"

    static let empty = SearchFilter(
        dateRange: nil, kinds: [], textTerms: [], entityTerms: [],
        placeTerms: [], projectTerm: nil, similarToIdentifier: nil,
        favoritesOnly: false, actionableOnly: false
    )

    var isEmpty: Bool { self == .empty }
}

extension String {
    /// Case- and diacritic-insensitive folding for French matching
    /// ("reçu" == "recu", "Éléonore" == "eleonore").
    var searchFolded: String {
        folding(options: [.caseInsensitive, .diacriticInsensitive], locale: Locale(identifier: "fr_CA"))
    }
}