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import Foundation
struct ScopedSearchHistoryEntry: Codable, Hashable, Identifiable, Sendable {
let scopeID: String
let query: String
let createdAt: Date
var id: String {
"\(scopeID):\(query.lowercased())"
}
}
enum ScopedSearchHistoryStore {
private static let maximumEntriesPerScope = 8
static func load(scopeID: String, defaults: UserDefaults = .standard) -> [ScopedSearchHistoryEntry] {
loadAll(defaults: defaults)[scopeID] ?? []
}
static func record(
query: String,
scopeID: String,
defaults: UserDefaults = .standard,
now: Date = .now
) {
let normalizedQuery = query.trimmingCharacters(in: .whitespacesAndNewlines)
guard !normalizedQuery.isEmpty else { return }
var allEntries = loadAll(defaults: defaults)
var scopeEntries = allEntries[scopeID] ?? []
scopeEntries.removeAll {
$0.query.compare(normalizedQuery, options: [.caseInsensitive, .diacriticInsensitive]) == .orderedSame
}
scopeEntries.insert(
ScopedSearchHistoryEntry(scopeID: scopeID, query: normalizedQuery, createdAt: now),
at: 0
)
allEntries[scopeID] = Array(scopeEntries.prefix(maximumEntriesPerScope))
save(allEntries, defaults: defaults)
}
static func clear(scopeID: String, defaults: UserDefaults = .standard) {
var allEntries = loadAll(defaults: defaults)
allEntries.removeValue(forKey: scopeID)
save(allEntries, defaults: defaults)
}
private static func loadAll(defaults: UserDefaults) -> [String: [ScopedSearchHistoryEntry]] {
guard let data = defaults.data(forKey: AppStorageKeys.scopedSearchHistory) else {
return [:]
}
do {
return try JSONDecoder().decode([String: [ScopedSearchHistoryEntry]].self, from: data)
} catch {
defaults.removeObject(forKey: AppStorageKeys.scopedSearchHistory)
return [:]
}
}
private static func save(_ entries: [String: [ScopedSearchHistoryEntry]], defaults: UserDefaults) {
guard let data = try? JSONEncoder().encode(entries) else { return }
defaults.set(data, forKey: AppStorageKeys.scopedSearchHistory)
}
}
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