using LCU.Library.Internal.IncentiveApiModels.Entities;
using LCU.Library.Internal.IncentiveApiModels.Enums;
using LCU.Library.Internal.IncentiveApiModels.Common;

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

public class DepartmentProgress : IViewTransformable<DepartmentProgress>
{
    private IReadOnlyCollection<IPayoutRule> DepartmentRules { get; }
    private IReadOnlyCollection<IPayoutRule> PersonalRules { get; }

    public DepartmentProgress(int departmentId, MonthRange monthRange)
    {
        DepartmentId = departmentId;
        MonthRange = monthRange;
        DepartmentRules = new List<IPayoutRule>();
        PersonalRules = new List<IPayoutRule>();
        Progress = new PerProductActivity();
        ActivityAudit = new List<Activity>();
        GoalAudit = new List<Goal>();
        Goals = new PerProductGoal();
        EmployeeProgress = new Dictionary<string, PerProductActivity>();
        EmployeeGoals = new Dictionary<string, PerProductGoal>();
    }

    public DepartmentProgress(
        int deptDepartmentId,
        MonthRange monthRangeOfAssignment,
        List<string> employeeList,
        IReadOnlyCollection<IPayoutRule> departmentRules,
        IReadOnlyCollection<IPayoutRule> personalRules
    ) : this(deptDepartmentId, monthRangeOfAssignment)
    {
        EmployeeList = employeeList;
        DepartmentRules = departmentRules;
        PersonalRules = personalRules;
        foreach (var employeeId in employeeList)
        {
            EmployeeGoals[employeeId] = new PerProductGoal();
            EmployeeProgress[employeeId] = new PerProductActivity();
        }
    }

    public int DepartmentId { get; set; }
    public MonthRange MonthRange { get; }
    public PerProductActivity Progress { get; }
    public PerProductGoal Goals { get; }
    public IEnumerable<Activity> ActivityAudit { get; set; }
    public IEnumerable<Goal> GoalAudit { get; set; }
    public IReadOnlyCollection<string> EmployeeList { get; }
    public IDictionary<string, PerProductActivity> EmployeeProgress { get; }
    public IDictionary<string, PerProductGoal> EmployeeGoals { get; }
    public int GapInsuranceEligibleActivityCount { get; private set; }

    public void ApplyActivity(ICollection<Activity> activities)
    {
        ActivityAudit = ActivityAudit.Concat(activities);

        foreach (var product in ProductDetail.ProductDetails.Select(productDetail => productDetail.Product))
        {
            foreach (var activity in activities)
            {
                var employeeId = activity.EmployeeId;

                if (product == Product.Vehicle && activity.Product == Product.Vehicle)
                {
                    GapInsuranceEligibleActivityCount += activity.CalculatedValueTowardsGapInsurance();
                    if (!EmployeeGoals.ContainsKey(employeeId))
                    {
                        EmployeeGoals[activity.EmployeeId] = new PerProductGoal();
                    };
                    EmployeeGoals[activity.EmployeeId].ProductGoals[Product.GAPInsurance] += activity.CalculatedValueTowardsGapInsurance();
                };

                if (!EmployeeProgress.ContainsKey(employeeId))
                {
                    EmployeeProgress[employeeId] = new PerProductActivity();
                }

                var calculatedValueTowardsOther = activity.CalculatedValueTowardsOther(product);
                EmployeeProgress[employeeId].ProductOther[product] += calculatedValueTowardsOther;
                Progress.ProductOther[product] += calculatedValueTowardsOther;
                var isEmployeeRestrictedByPayoutRule = PersonalRules.Any(payoutRule => payoutRule.RestrictedByPayoutRule(activity, product));
                var isDepartmentRestrictedByPayoutRule = DepartmentRules.Any(payoutRule => payoutRule.RestrictedByPayoutRule(activity, product));

                if (isEmployeeRestrictedByPayoutRule && isDepartmentRestrictedByPayoutRule)
                {
                    continue;
                }

                var calculatedValueTowardsGoal = activity.CalculatedValueTowardsGoal(product);

                if (!isEmployeeRestrictedByPayoutRule)
                {
                    EmployeeProgress[employeeId].ProductActivity[product] += calculatedValueTowardsGoal;
                }

                if (!isDepartmentRestrictedByPayoutRule)
                {
                    Progress.ProductActivity[product] += calculatedValueTowardsGoal;
                }
            }
        }
    }

    public void ApplyGoals(ICollection<Goal> goals)
    {
        GoalAudit = GoalAudit.Concat(goals);

        foreach (var goal in goals)
        {
            var product = goal.Product;
            var employeeId = goal.EmployeeId;
            var value = goal.Value;

            if (employeeId is null)
            {
                Goals.ProductGoals[product] += value;
                continue;
            }

            if (!EmployeeGoals.ContainsKey(employeeId))
            {
                EmployeeGoals[employeeId] = new PerProductGoal();
            }

            EmployeeGoals[employeeId].ProductGoals[product] += value;
        }

        if (GapInsuranceEligibleActivityCount == 0)
        {
            return;
        }

        var gapInsurance = Product.GAPInsurance;

        if (!Goals.ProductGoals.ContainsKey(gapInsurance))
        {
            Goals.ProductGoals.Add(gapInsurance, GapInsuranceEligibleActivityCount);
            return;
        }

        Goals.ProductGoals[gapInsurance] = GapInsuranceEligibleActivityCount;
    }

    public DepartmentProgress TransformForView()
    {
        foreach (var activity in ActivityAudit)
        {
            activity?.TransformForView();
        }

        return this;
    }
}