Grouped dates

Grouped_dates.swift

import Foundation

// Array de fechas como strings
let dateStrings = [
    "2023-01-01 08:00:00",
    "2023-01-01 10:30:00",
    "2023-01-01 12:45:00",
    "2023-01-01 08:00:00",
    "2023-01-01 18:00:00",
    "2023-01-01 10:30:00",
    "2023-01-01 12:45:00",
    "2023-01-01 23:59:59",
    "2023-01-02 10:30:00",
]

// Función para parsear las fechas
func parseDates(dateStrings: [String]) -> [Date] {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"

    return dateStrings.compactMap { dateFormatter.date(from: $0) }
}

// Parsear las fechas
let parsedDates = parseDates(dateStrings: dateStrings)

// Imprimir las fechas parseadas
/*for (index, date) in parsedDates.enumerated() {
    print("Fecha \(index + 1): \(date)")
}*/

// Función para agrupar las fechas por horas
func groupDatesByHour(dates: [Date]) -> [Int: [Date]] {
    var groupedDates: [Int: [Date]] = [:]

    let calendar = Calendar.current
    let hourComponent = calendar.component(.hour, from: dates.first ?? Date())

    for date in dates {
        let hour = calendar.component(.hour, from: date)
        let adjustedHour = hour - hourComponent // Ajuste para evitar desbordamiento de índices negativos

        if var datesInHour = groupedDates[adjustedHour] {
            datesInHour.append(date)
            groupedDates[adjustedHour] = datesInHour
        } else {
            groupedDates[adjustedHour] = [date]
        }
    }

    return groupedDates
}

func groupDatesByHourAndDate(dates: [Date]) -> [String: [Date]] {
    var groupedDates: [String: [Date]] = [:]

    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "yyyy-MM-dd HH:mm"

    for date in dates {
        let key = dateFormatter.string(from: date)

        if var datesInKey = groupedDates[key] {
            datesInKey.append(date)
            groupedDates[key] = datesInKey
        } else {
            groupedDates[key] = [date]
        }
    }

    return groupedDates
}




// Ejemplo de uso
let groupedDates = groupDatesByHour(dates: parsedDates)





// Imprimir las fechas agrupadas por horas
/*for (hour, datesInHour) in groupedDates {
    print("Hora \(hour):")
    for date in datesInHour {
        print("   \(date)")
    }
}
*/

// Ejemplo de uso
let groupedDates2 = groupDatesByHourAndDate(dates: parsedDates)

// Imprimir las fechas agrupadas por horas dentro de la misma fecha
for (key, datesInKey) in groupedDates2 {
    print("---- \(key) count \(datesInKey.count)")
    for date in datesInKey {
        print("   \(date)")
    }
}