using System.Text.Json;
using Microsoft.AspNetCore.Mvc;
using PlanTempus.Application.Features.Localization.Services;

namespace PlanTempus.Application.Features.Employees.Components;

public class EmployeeDetailSalaryViewComponent : ViewComponent
{
    private readonly ILocalizationService _localization;
    private readonly IWebHostEnvironment _environment;

    public EmployeeDetailSalaryViewComponent(ILocalizationService localization, IWebHostEnvironment environment)
    {
        _localization = localization;
        _environment = environment;
    }

    public IViewComponentResult Invoke(string key)
    {
        var employee = EmployeeDetailCatalog.Get(key);
        var salaryData = LoadSalarySpecifications();

        var model = new EmployeeDetailSalaryViewModel
        {
            // Salary specifications from JSON
            Specifications = salaryData.Specifications,
            // Data
            BankAccount = employee.BankAccount,
            TaxCard = employee.TaxCard,
            HourlyRate = employee.HourlyRate,
            MonthlyFixedSalary = employee.MonthlyFixedSalary,

            // Rates
            NormalRate = employee.NormalRate,
            OvertimeRate = employee.OvertimeRate,
            VacationRate = employee.VacationRate,

            // Commission
            MinimumPerHour = employee.MinimumPerHour,
            ServiceCommission = employee.ServiceCommission,
            ProductCommission = employee.ProductCommission,

            // Supplements
            WeekdaySupplement = employee.WeekdaySupplement,
            SaturdaySupplement = employee.SaturdaySupplement,
            SundaySupplement = employee.SundaySupplement,

            // Labels
            LabelRates = _localization.Get("employees.detail.salary.rates"),
            LabelNormalRate = _localization.Get("employees.detail.salary.normalrate"),
            LabelOvertimeRate = _localization.Get("employees.detail.salary.overtimerate"),
            LabelVacationRate = _localization.Get("employees.detail.salary.vacationrate"),
            LabelProvision = _localization.Get("employees.detail.salary.provision"),
            LabelMinimumPerHour = _localization.Get("employees.detail.salary.minimumperhour"),
            LabelServiceCommission = _localization.Get("employees.detail.salary.servicecommission"),
            LabelProductCommission = _localization.Get("employees.detail.salary.productcommission"),
            LabelSupplements = _localization.Get("employees.detail.salary.supplements"),
            LabelWeekdaySupplement = _localization.Get("employees.detail.salary.weekdaysupplement"),
            LabelSaturdaySupplement = _localization.Get("employees.detail.salary.saturdaysupplement"),
            LabelSundaySupplement = _localization.Get("employees.detail.salary.sundaysupplement"),
            LabelSalaryHistory = _localization.Get("employees.detail.salary.history"),
            LabelPeriod = _localization.Get("employees.detail.salary.period"),
            LabelGrossSalary = _localization.Get("employees.detail.salary.grosssalary"),
            LabelView = _localization.Get("employees.detail.salary.view"),
            LabelEdit = _localization.Get("common.edit"),
            LabelRatesDrawerTitle = _localization.Get("employees.detail.salary.ratesdrawertitle"),
            LabelBaseRates = _localization.Get("employees.detail.salary.baserates"),
            LabelCourseRate = _localization.Get("employees.detail.salary.courserate"),
            LabelTimeOffRate = _localization.Get("employees.detail.salary.timeoffrate"),
            LabelPaidLeaveRate = _localization.Get("employees.detail.salary.paidleaverate"),
            LabelOfficeRate = _localization.Get("employees.detail.salary.officerate"),
            LabelChildSickRate = _localization.Get("employees.detail.salary.childsickrate"),
            LabelChildHospitalRate = _localization.Get("employees.detail.salary.childhospitalrate"),
            LabelMaternityRate = _localization.Get("employees.detail.salary.maternityrate"),
            LabelWeekdaySupplementFull = _localization.Get("employees.detail.salary.weekdaysupplementfull"),
            LabelSaturdaySupplementFull = _localization.Get("employees.detail.salary.saturdaysupplementfull"),
            LabelCommission = _localization.Get("employees.detail.salary.commission"),
            LabelProductCommissionFull = _localization.Get("employees.detail.salary.productcommissionfull"),
            LabelServiceCommissionFull = _localization.Get("employees.detail.salary.servicecommissionfull"),

            // Rate values (numeric only for drawer inputs)
            NormalRateValue = employee.NormalRateValue,
            OvertimeRateValue = employee.OvertimeRateValue,
            CourseRateValue = employee.CourseRateValue,
            TimeOffRateValue = employee.TimeOffRateValue,
            PaidLeaveRateValue = employee.PaidLeaveRateValue,
            VacationRateValue = employee.VacationRateValue,
            OfficeRateValue = employee.OfficeRateValue,
            ChildSickRateValue = employee.ChildSickRateValue,
            ChildHospitalRateValue = employee.ChildHospitalRateValue,
            MaternityRateValue = employee.MaternityRateValue,
            WeekdaySupplementValue = employee.WeekdaySupplementValue,
            SaturdaySupplementValue = employee.SaturdaySupplementValue,
            SundaySupplementValue = employee.SundaySupplementValue,
            ProductCommissionValue = employee.ProductCommissionValue,
            ServiceCommissionValue = employee.ServiceCommissionValue,

            // Labels for specifications
            LabelSpecifications = _localization.Get("employees.detail.salary.specifications"),
            LabelWeek = _localization.Get("employees.detail.salary.week"),
            LabelNormalHours = _localization.Get("employees.detail.salary.normalhours"),
            LabelOvertimeHours = _localization.Get("employees.detail.salary.overtimehours"),
            LabelVacationDays = _localization.Get("employees.detail.salary.vacationdays"),
            LabelServiceRevenue = _localization.Get("employees.detail.salary.servicerevenue"),
            LabelProductRevenue = _localization.Get("employees.detail.salary.productrevenue"),
            LabelMinimumThreshold = _localization.Get("employees.detail.salary.minimumthreshold"),
            LabelTotal = _localization.Get("employees.detail.salary.total"),
            LabelWeeklyNorm = _localization.Get("employees.detail.salary.weeklynorm"),
            LabelOvertimeMultiplier = _localization.Get("employees.detail.salary.overtimemultiplier"),
            LabelMinimum = _localization.Get("employees.detail.salary.minimum"),

            // Mock salary history (kept for backwards compatibility)
            SalaryHistory = new List<SalaryHistoryItem>
            {
                new() { Period = "Januar 2026", GrossSalary = "34.063,50 kr" },
                new() { Period = "December 2025", GrossSalary = "31.845,00 kr" },
                new() { Period = "November 2025", GrossSalary = "33.290,25 kr" },
                new() { Period = "Oktober 2025", GrossSalary = "32.156,75 kr" },
                new() { Period = "September 2025", GrossSalary = "34.520,00 kr" }
            }
        };

        return View(model);
    }

    private SalarySpecificationRoot LoadSalarySpecifications()
    {
        var jsonPath = Path.Combine(_environment.ContentRootPath, "Features", "Employees", "Data", "salarySpecificationMock.json");
        var json = System.IO.File.ReadAllText(jsonPath);
        return JsonSerializer.Deserialize<SalarySpecificationRoot>(json, new JsonSerializerOptions
        {
            PropertyNameCaseInsensitive = true
        })!;
    }
}

public class EmployeeDetailSalaryViewModel
{
    // Salary Specifications (from JSON)
    public List<SalarySpecificationDto> Specifications { get; init; } = new();

    // Data
    public required string BankAccount { get; init; }
    public required string TaxCard { get; init; }
    public required string HourlyRate { get; init; }
    public required string MonthlyFixedSalary { get; init; }

    // Rates
    public required string NormalRate { get; init; }
    public required string OvertimeRate { get; init; }
    public required string VacationRate { get; init; }

    // Commission
    public required string MinimumPerHour { get; init; }
    public required string ServiceCommission { get; init; }
    public required string ProductCommission { get; init; }

    // Supplements
    public required string WeekdaySupplement { get; init; }
    public required string SaturdaySupplement { get; init; }
    public required string SundaySupplement { get; init; }

    // Labels
    public required string LabelRates { get; init; }
    public required string LabelNormalRate { get; init; }
    public required string LabelOvertimeRate { get; init; }
    public required string LabelVacationRate { get; init; }
    public required string LabelProvision { get; init; }
    public required string LabelMinimumPerHour { get; init; }
    public required string LabelServiceCommission { get; init; }
    public required string LabelProductCommission { get; init; }
    public required string LabelSupplements { get; init; }
    public required string LabelWeekdaySupplement { get; init; }
    public required string LabelSaturdaySupplement { get; init; }
    public required string LabelSundaySupplement { get; init; }
    public required string LabelSalaryHistory { get; init; }
    public required string LabelPeriod { get; init; }
    public required string LabelGrossSalary { get; init; }
    public required string LabelView { get; init; }
    public required string LabelEdit { get; init; }
    public required string LabelRatesDrawerTitle { get; init; }
    public required string LabelBaseRates { get; init; }
    public required string LabelCourseRate { get; init; }
    public required string LabelTimeOffRate { get; init; }
    public required string LabelPaidLeaveRate { get; init; }
    public required string LabelOfficeRate { get; init; }
    public required string LabelChildSickRate { get; init; }
    public required string LabelChildHospitalRate { get; init; }
    public required string LabelMaternityRate { get; init; }
    public required string LabelWeekdaySupplementFull { get; init; }
    public required string LabelSaturdaySupplementFull { get; init; }
    public required string LabelCommission { get; init; }
    public required string LabelProductCommissionFull { get; init; }
    public required string LabelServiceCommissionFull { get; init; }

    // Labels for specifications accordion
    public required string LabelSpecifications { get; init; }
    public required string LabelWeek { get; init; }
    public required string LabelNormalHours { get; init; }
    public required string LabelOvertimeHours { get; init; }
    public required string LabelVacationDays { get; init; }
    public required string LabelServiceRevenue { get; init; }
    public required string LabelProductRevenue { get; init; }
    public required string LabelMinimumThreshold { get; init; }
    public required string LabelTotal { get; init; }
    public required string LabelWeeklyNorm { get; init; }
    public required string LabelOvertimeMultiplier { get; init; }
    public required string LabelMinimum { get; init; }

    // Rate values (for drawer inputs)
    public required string NormalRateValue { get; init; }
    public required string OvertimeRateValue { get; init; }
    public required string CourseRateValue { get; init; }
    public required string TimeOffRateValue { get; init; }
    public required string PaidLeaveRateValue { get; init; }
    public required string VacationRateValue { get; init; }
    public required string OfficeRateValue { get; init; }
    public required string ChildSickRateValue { get; init; }
    public required string ChildHospitalRateValue { get; init; }
    public required string MaternityRateValue { get; init; }
    public required string WeekdaySupplementValue { get; init; }
    public required string SaturdaySupplementValue { get; init; }
    public required string SundaySupplementValue { get; init; }
    public required string ProductCommissionValue { get; init; }
    public required string ServiceCommissionValue { get; init; }

    // Salary History (mock data)
    public List<SalaryHistoryItem> SalaryHistory { get; init; } = new();
}

public class SalaryHistoryItem
{
    public required string Period { get; init; }
    public required string GrossSalary { get; init; }
}

// DTOs for salary specification JSON
public class SalarySpecificationRoot
{
    public List<SalarySpecificationDto> Specifications { get; init; } = new();
}

public class SalarySpecificationDto
{
    public required string Period { get; init; }
    public required string PeriodKey { get; init; }
    public decimal GrossSalary { get; init; }
    public decimal BasePay { get; init; }
    public decimal OvertimePay { get; init; }
    public decimal ServiceCommission { get; init; }
    public decimal ProductCommission { get; init; }
    public SalaryConfigDto Config { get; init; } = new();
    public List<SalaryWeekDto> Weeks { get; init; } = new();

    // Formatted values for display
    public string GrossSalaryFormatted => GrossSalary.ToString("N2", System.Globalization.CultureInfo.GetCultureInfo("da-DK")) + " kr";
    public string BasePayFormatted => BasePay.ToString("N2", System.Globalization.CultureInfo.GetCultureInfo("da-DK")) + " kr";
    public string OvertimePayFormatted => OvertimePay.ToString("N2", System.Globalization.CultureInfo.GetCultureInfo("da-DK")) + " kr";
    public string TotalCommission => (ServiceCommission + ProductCommission).ToString("N2", System.Globalization.CultureInfo.GetCultureInfo("da-DK")) + " kr";
}

public class SalaryConfigDto
{
    public decimal HourlyRate { get; init; }
    public int WeeklyHours { get; init; }
    public decimal OvertimeMultiplier { get; init; }
    public decimal MinimumPerHour { get; init; }
    public int ServiceCommissionPct { get; init; }
    public int ProductCommissionPct { get; init; }

    // Formatted values
    public string HourlyRateFormatted => HourlyRate.ToString("N0", System.Globalization.CultureInfo.GetCultureInfo("da-DK")) + " kr";
    public string WeeklyHoursFormatted => WeeklyHours + "t/uge";
    public string OvertimeFormatted => "+" + Math.Round((OvertimeMultiplier - 1) * 100) + "%";
    public string MinimumFormatted => MinimumPerHour.ToString("N0", System.Globalization.CultureInfo.GetCultureInfo("da-DK")) + " kr/time";
    public string CommissionFormatted => ServiceCommissionPct + "% services · " + ProductCommissionPct + "% produkter";
}

public class SalaryWeekDto
{
    public int WeekNumber { get; init; }
    public int NormalHours { get; init; }
    public int OvertimeHours { get; init; }
    public int VacationDays { get; init; }
    public decimal ServiceRevenue { get; init; }
    public decimal ProductRevenue { get; init; }
    public decimal MinimumThreshold { get; init; }
    public decimal Commission { get; init; }
    public decimal TotalPay { get; init; }

    // Formatted values
    public string NormalHoursFormatted => NormalHours + "t";
    public string OvertimeHoursFormatted => OvertimeHours + "t";
    public string VacationDaysFormatted => VacationDays + " dg";
    public string ServiceRevenueFormatted => ServiceRevenue.ToString("N0", System.Globalization.CultureInfo.GetCultureInfo("da-DK")) + " kr";
    public string ProductRevenueFormatted => ProductRevenue.ToString("N0", System.Globalization.CultureInfo.GetCultureInfo("da-DK")) + " kr";
    public string MinimumThresholdFormatted => MinimumThreshold.ToString("N0", System.Globalization.CultureInfo.GetCultureInfo("da-DK")) + " kr";
    public string CommissionFormatted => Commission.ToString("N2", System.Globalization.CultureInfo.GetCultureInfo("da-DK")) + " kr";
    public string TotalPayFormatted => TotalPay.ToString("N2", System.Globalization.CultureInfo.GetCultureInfo("da-DK")) + " kr";
    public bool HasOvertime => OvertimeHours > 0;
    public bool HasCommission => Commission > 0;
}