import Foundation public struct OpenAIDashboardSnapshot: Codable, Equatable, Sendable {    public let signedInEmail: String?    public let codeReviewRemainingPercent: Double?    public let codeReviewLimit: RateWindow?    public let creditEvents: [CreditEvent]    public let dailyBreakdown: [OpenAIDashboardDailyBreakdown]    /// Usage breakdown time series from the Codex dashboard chart ("Usage breakdown", 30 days).    ///    /// This is distinct from `dailyBreakdown`, which is derived from `creditEvents` (credits usage history table).    public let usageBreakdown: [OpenAIDashboardDailyBreakdown]    public let creditsPurchaseURL: String?    public let primaryLimit: RateWindow?    public let secondaryLimit: RateWindow?    public let creditsRemaining: Double?    public let accountPlan: String?    public let updatedAt: Date     public init(        signedInEmail: String?,        codeReviewRemainingPercent: Double?,        codeReviewLimit: RateWindow? = nil,        creditEvents: [CreditEvent],        dailyBreakdown: [OpenAIDashboardDailyBreakdown],        usageBreakdown: [OpenAIDashboardDailyBreakdown],        creditsPurchaseURL: String?,        primaryLimit: RateWindow? = nil,        secondaryLimit: RateWindow? = nil,        creditsRemaining: Double? = nil,        accountPlan: String? = nil,        updatedAt: Date)    {        self.signedInEmail = signedInEmail        self.codeReviewRemainingPercent = codeReviewRemainingPercent        self.codeReviewLimit = codeReviewLimit        self.creditEvents = creditEvents        self.dailyBreakdown = dailyBreakdown        self.usageBreakdown = usageBreakdown        self.creditsPurchaseURL = creditsPurchaseURL        self.primaryLimit = primaryLimit        self.secondaryLimit = secondaryLimit        self.creditsRemaining = creditsRemaining        self.accountPlan = accountPlan        self.updatedAt = updatedAt    }     private enum CodingKeys: String, CodingKey {        case signedInEmail        case codeReviewRemainingPercent        case codeReviewLimit        case creditEvents        case dailyBreakdown        case usageBreakdown        case creditsPurchaseURL        case primaryLimit        case secondaryLimit        case creditsRemaining        case accountPlan        case updatedAt    }     public init(from decoder: Decoder) throws {        let container = try decoder.container(keyedBy: CodingKeys.self)        self.signedInEmail = try container.decodeIfPresent(String.self, forKey: .signedInEmail)        self.codeReviewRemainingPercent = try container.decodeIfPresent(            Double.self,            forKey: .codeReviewRemainingPercent)        self.codeReviewLimit = try container.decodeIfPresent(RateWindow.self, forKey: .codeReviewLimit)        self.creditEvents = try container.decodeIfPresent([CreditEvent].self, forKey: .creditEvents) ?? []        self.dailyBreakdown = try container.decodeIfPresent(            [OpenAIDashboardDailyBreakdown].self,            forKey: .dailyBreakdown)            ?? Self.makeDailyBreakdown(from: self.creditEvents, maxDays: 30)        self.usageBreakdown = try container.decodeIfPresent(            [OpenAIDashboardDailyBreakdown].self,            forKey: .usageBreakdown) ?? []        self.creditsPurchaseURL = try container.decodeIfPresent(String.self, forKey: .creditsPurchaseURL)        self.primaryLimit = try container.decodeIfPresent(RateWindow.self, forKey: .primaryLimit)        self.secondaryLimit = try container.decodeIfPresent(RateWindow.self, forKey: .secondaryLimit)        self.creditsRemaining = try container.decodeIfPresent(Double.self, forKey: .creditsRemaining)        self.accountPlan = try container.decodeIfPresent(String.self, forKey: .accountPlan)        self.updatedAt = try container.decode(Date.self, forKey: .updatedAt)    }     public static func makeDailyBreakdown(from events: [CreditEvent], maxDays: Int) -> [OpenAIDashboardDailyBreakdown] {        guard !events.isEmpty else { return [] }         let calendar = Calendar(identifier: .gregorian)        let formatter = DateFormatter()        formatter.locale = Locale(identifier: "en_US_POSIX")        formatter.calendar = calendar        formatter.timeZone = TimeZone.current        formatter.dateFormat = "yyyy-MM-dd"         var totals: [String: [String: Double]] = [:] // day -> service -> credits        for event in events {            let day = formatter.string(from: event.date)            totals[day, default: [:]][event.service, default: 0] += event.creditsUsed        }         let sortedDays = totals.keys.sorted(by: >).prefix(maxDays)        return sortedDays.map { day in            let serviceTotals = totals[day] ?? [:]            let services = serviceTotals                .map { OpenAIDashboardServiceUsage(service: $0.key, creditsUsed: $0.value) }                .sorted { lhs, rhs in                    if lhs.creditsUsed == rhs.creditsUsed { return lhs.service < rhs.service }                    return lhs.creditsUsed > rhs.creditsUsed                }            let total = services.reduce(0) { $0 + $1.creditsUsed }            return OpenAIDashboardDailyBreakdown(day: day, services: services, totalCreditsUsed: total)        }    }} extension OpenAIDashboardSnapshot {    public func toUsageSnapshot(        provider: UsageProvider = .codex,        accountEmail: String? = nil,        accountPlan: String? = nil) -> UsageSnapshot?    {        CodexReconciledState.fromAttachedDashboard(            snapshot: self,            provider: provider,            accountEmail: accountEmail,            accountPlan: accountPlan)?            .toUsageSnapshot()    }     public func toCreditsSnapshot() -> CreditsSnapshot? {        guard let creditsRemaining else { return nil }        return CreditsSnapshot(remaining: creditsRemaining, events: self.creditEvents, updatedAt: self.updatedAt)    }} public struct OpenAIDashboardDailyBreakdown: Codable, Equatable, Sendable {    /// Day key in `yyyy-MM-dd` (local time).    public let day: String    public let services: [OpenAIDashboardServiceUsage]    public let totalCreditsUsed: Double     public init(day: String, services: [OpenAIDashboardServiceUsage], totalCreditsUsed: Double) {        self.day = day        self.services = services        self.totalCreditsUsed = totalCreditsUsed    }} public struct OpenAIDashboardServiceUsage: Codable, Equatable, Sendable {    public let service: String    public let creditsUsed: Double     public init(service: String, creditsUsed: Double) {        self.service = service        self.creditsUsed = creditsUsed    }} public struct OpenAIDashboardCache: Codable, Equatable, Sendable {    public let accountEmail: String    public let snapshot: OpenAIDashboardSnapshot     public init(accountEmail: String, snapshot: OpenAIDashboardSnapshot) {        self.accountEmail = accountEmail        self.snapshot = snapshot    }} public enum OpenAIDashboardCacheStore {    public static func load() -> OpenAIDashboardCache? {        guard let url = self.cacheURL else { return nil }        guard let data = try? Data(contentsOf: url) else { return nil }        let decoder = JSONDecoder()        decoder.dateDecodingStrategy = .iso8601        return try? decoder.decode(OpenAIDashboardCache.self, from: data)    }     public static func save(_ cache: OpenAIDashboardCache) {        guard let url = self.cacheURL else { return }        do {            try FileManager.default.createDirectory(                at: url.deletingLastPathComponent(),                withIntermediateDirectories: true)            let encoder = JSONEncoder()            encoder.dateEncodingStrategy = .iso8601            let data = try encoder.encode(cache)            try data.write(to: url, options: [.atomic])        } catch {            // Best-effort cache only; ignore errors.        }    }     public static func clear() {        guard let url = self.cacheURL else { return }        try? FileManager.default.removeItem(at: url)    }     private static var cacheURL: URL? {        guard let root = FileManager.default.urls(for: .applicationSupportDirectory, in: .userDomainMask).first else {            return nil        }        let dir = root.appendingPathComponent("com.steipete.codexbar", isDirectory: true)        return dir.appendingPathComponent("openai-dashboard.json")    }}