using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;
using LCU.API.Internal.Operations.IncentiveApiLib.Persistence;
using LCU.Library.Internal.IncentiveApiModels.Entities;
using LCU.Library.Internal.IncentiveApiModels.Requests;

namespace LCU.API.Internal.Operations.IncentiveApiLib.Repositories;

public class UserDepartmentHistoryRepository : BaseRepository, IUserDepartmentHistoryRepository
{
    public UserDepartmentHistoryRepository(IApplicationDbContext context) : base(context)
    {
    }

    public async Task<List<UserDepartmentHistory>> SaveUserDepartmentUpdate(UserDepartment currentUserDepartment, DepartmentUpdateRequest departmentUpdateRequest)
    {
        var userDepartmentHistoryUpdates = new List<UserDepartmentHistory>();

        if (currentUserDepartment.Role.Name != departmentUpdateRequest.Role)
        {
            userDepartmentHistoryUpdates.Add(new UserDepartmentHistory
            {
                UserDepartmentId = currentUserDepartment.Id,
                FieldName = "Role",
                NewValue = departmentUpdateRequest.Role,
                OldValue = currentUserDepartment.Role.Name
            });
        }

        if (currentUserDepartment.SlidingPayout != departmentUpdateRequest.SlidingPayout)
        {
            userDepartmentHistoryUpdates.Add(new UserDepartmentHistory
            {
                UserDepartmentId = currentUserDepartment.Id,
                FieldName = "SlidingPayout",
                NewValue = departmentUpdateRequest.SlidingPayout.ToString(CultureInfo.InvariantCulture),
                OldValue = currentUserDepartment.SlidingPayout.ToString(CultureInfo.InvariantCulture)
            });
        }

        if (currentUserDepartment.EndDate?.Date != departmentUpdateRequest.EndDate?.Date)
        {
            userDepartmentHistoryUpdates.Add(new UserDepartmentHistory
            {
                UserDepartmentId = currentUserDepartment.Id,
                FieldName = "EndDate",
                NewValue = departmentUpdateRequest.EndDate.ToString(),
                OldValue = currentUserDepartment.EndDate.ToString()
            });
        }

        await _context.UserDepartmentHistories.AddRangeAsync(userDepartmentHistoryUpdates);
        return userDepartmentHistoryUpdates;
    }

    public async Task<List<UserPermissionHistory>> GetUserDepartmentHistory(int employeeId)
    {
        return await _context.UserPermissionHistories.Where(history => history.EmployeeId == employeeId).ToListAsync();
    }
}