//
//  TestClock.swift
//  SportsTimeTests
//
//  Centralized time utilities for deterministic tests.
//

import Foundation

enum TestClock {
    static let timeZone = TimeZone(identifier: "America/New_York")!
    static let locale = Locale(identifier: "en_US_POSIX")

    static let calendar: Calendar = {
        var calendar = Calendar.current
        calendar.timeZone = timeZone
        calendar.locale = locale
        return calendar
    }()

    static let baseDate: Date = {
        let components = DateComponents(
            calendar: calendar,
            timeZone: timeZone,
            year: 2026,
            month: 1,
            day: 15,
            hour: 12,
            minute: 0,
            second: 0
        )
        return calendar.date(from: components) ?? Date(timeIntervalSince1970: 0)
    }()

    static var now: Date { baseDate }

    static func startOfDay(for date: Date = baseDate) -> Date {
        calendar.startOfDay(for: date)
    }

    static func addingDays(_ days: Int, to date: Date = baseDate) -> Date {
        calendar.date(byAdding: .day, value: days, to: date) ?? date
    }

    static func addingHours(_ hours: Int, to date: Date = baseDate) -> Date {
        calendar.date(byAdding: .hour, value: hours, to: date) ?? date
    }
}