using LCU.Library.Internal.IncentiveApiModels.Entities;
using LCU.Library.Internal.IncentiveApiModels.Enums;
using LCU.API.Internal.Operations.IncentiveApi.Services.Rules;
using LCU.API.Internal.Operations.IncentiveApi.Models;
using LCU.API.Internal.Operations.IncentiveApiLib.Repositories;
using LCU.Library.Internal.IncentiveApiModels.Common;

namespace LCU.API.Internal.Operations.IncentiveApi.Services;

public class DashboardService : IDashboardService
{
    private readonly IDepartmentService _departmentService;
    private readonly IActivityRepository _activityRepository;
    private readonly IGoalRepository _goalRepository;
    private readonly IBusinessRuleService _businessRuleService;

    public DashboardService(IDepartmentService departmentService, IActivityRepository activityRepository,
        IGoalRepository goalRepository, IBusinessRuleService businessRuleService)
    {
        _departmentService = departmentService;
        _activityRepository = activityRepository;
        _goalRepository = goalRepository;
        _businessRuleService = businessRuleService;
    }

    public async Task<RegionProgress> GetRegionProgressForMonthRangeAsync(
        Region region, MonthRange monthRange)
    {
        var departments = await _departmentService.GetDepartmentsByRegionAsync(region);
        var regionProgress = new RegionProgress(region, monthRange);
        foreach (var dept in departments.Where(x => x.State == DepartmentState.Active))
        {
            var progress = await GetDepartmentProgressForMonthRangeAsync(dept.Id.Value, monthRange);
            regionProgress.Departments.Add(progress);
        }

        return regionProgress;
    }

    public async Task<BusinessLineProgress> GetBusinessLineProgressForMonthRangeAsync(
        BusinessLine businessLine, MonthRange monthRange)
    {
        var departments = await _departmentService.GetDepartmentsByBusinessLineAsync(businessLine);
        var businessLineProgress = new BusinessLineProgress(businessLine, monthRange);
        foreach (var dept in departments.Where(x => x.State == DepartmentState.Active))
        {
            var progress = await GetDepartmentProgressForMonthRangeAsync(dept.Id.Value, monthRange);
            businessLineProgress.Departments.Add(progress);
        }

        return businessLineProgress;
    }

    public async Task<EmployeeProgress> GetEmployeeProgressForMonthRangeAsync(AppUser employee, MonthRange monthRange)
    {
        var users = new List<AppUser>()
        {
            employee
        };
        var progress = new EmployeeProgress(employee, monthRange, new List<IPayoutRule>());
        foreach (var dept in employee.Departments)
        {
            var employeeGoals =
                await _goalRepository.FindPersonnelGoalsByMonthRange(dept.DepartmentId, users, monthRange);
            progress.ApplyGoals(employeeGoals);
        }

        progress.ApplyAll(await _activityRepository.FindEmployeeActivityByMonthRange(employee, monthRange));
        return progress;
    }

    public async Task<IReadOnlyCollection<DepartmentProgress>> GetDepartmentProgressForMonthRangeAsync(
        List<UserDepartment> userDepartments, MonthRange monthRange)
    {
        var deptProgress = new List<DepartmentProgress>();
        foreach (var dept in userDepartments)
        {
            var perDeptProgress = await GetDepartmentProgressForMonthRangeAsync(dept.DepartmentId, monthRange);
            if (perDeptProgress == null) continue;
            deptProgress.Add(perDeptProgress);
        }

        return deptProgress;
    }

    public async Task<DepartmentProgress> GetDepartmentProgressForMonthRangeAsync(int departmentId,
        MonthRange monthRange)
    {
        var employees =
            await _departmentService.FindDepartmentAssignmentsForRange(departmentId, monthRange);

        var departmentActivity = await _activityRepository.FindDepartmentActivityByMonthRange(
            departmentId, monthRange);
        var departmentGoals =
            await _goalRepository.FindDepartmentGoalsByMonthRange(departmentId, monthRange);

        var progress = new DepartmentProgress(departmentId, monthRange,
            employees.Select(x => x.Employee.EmployeeId).Distinct().ToList(),
            _businessRuleService.GetRules(PayoutType.Department),
            _businessRuleService.GetRules(PayoutType.Personal));

        progress.ApplyActivity(departmentActivity);
        progress.ApplyGoals(departmentGoals);
        var employeeGoals =
            await _goalRepository.FindPersonnelGoalsByMonthRange(departmentId, progress.EmployeeList.ToList(),
                monthRange);
        progress.ApplyGoals(employeeGoals);
        return progress;
    }
}