import Foundation enum ClaudeWebExtraRateWindowParser {    private static let definitions: [(id: String, title: String, keys: [String])] = [        (            id: "claude-routines",            title: "Daily Routines",            keys: [                "seven_day_routines",                "seven_day_claude_routines",                "claude_routines",                "routines",                "routine",                "seven_day_cowork",                "cowork",            ]),    ]     static func parse(from json: [String: Any]) -> (windows: [NamedRateWindow], sourceKeys: [String: String]) {        var windows: [NamedRateWindow] = []        var sourceKeys: [String: String] = [:]        windows.reserveCapacity(Self.definitions.count)         for definition in Self.definitions {            if let foundWindow = Self.firstUsageWindow(in: json, keys: definition.keys) {                let rawWindow = foundWindow.window                guard let utilization = Self.percentValue(from: rawWindow["utilization"]) else { continue }                let resetsAt = (rawWindow["resets_at"] as? String).flatMap(Self.parseISO8601Date)                windows.append(Self.namedWindow(                    id: definition.id,                    title: definition.title,                    usedPercent: utilization,                    resetsAt: resetsAt))                sourceKeys[definition.id] = foundWindow.sourceKey                continue            }             // Some accounts expose the key with null payloads (for example `seven_day_cowork: null`).            // Preserve the bar in that case with a 0% window so the product section remains visible.            if let key = Self.firstUsageKey(in: json, keys: definition.keys) {                windows.append(Self.namedWindow(                    id: definition.id,                    title: definition.title,                    usedPercent: 0,                    resetsAt: nil))                sourceKeys[definition.id] = key            }        }        return (windows, sourceKeys)    }     private static func namedWindow(        id: String,        title: String,        usedPercent: Double,        resetsAt: Date?) -> NamedRateWindow    {        NamedRateWindow(            id: id,            title: title,            window: RateWindow(                usedPercent: usedPercent,                windowMinutes: 7 * 24 * 60,                resetsAt: resetsAt,                resetDescription: nil))    }     private static func firstUsageWindow(        in json: [String: Any],        keys: [String]) -> (window: [String: Any], sourceKey: String)?    {        for key in keys {            if let window = json[key] as? [String: Any] {                return (window, key)            }        }        return nil    }     private static func firstUsageKey(in json: [String: Any], keys: [String]) -> String? {        for key in keys where json.keys.contains(key) {            return key        }        return nil    }     private static func percentValue(from value: Any?) -> Double? {        if let intValue = value as? Int {            return Double(intValue)        }        if let doubleValue = value as? Double {            return doubleValue        }        return nil    }     private static func parseISO8601Date(_ string: String) -> Date? {        let formatter = ISO8601DateFormatter()        formatter.formatOptions = [.withInternetDateTime, .withFractionalSeconds]        if let date = formatter.date(from: string) {            return date        }        formatter.formatOptions = [.withInternetDateTime]        return formatter.date(from: string)    }}