chapter-organizer/Core/Validation/Rules/StudentAssignmentRules/TooManyRegionalEventsAssignmentRule.cs

using Core.Entities;
using Core.Models;
using Core.Validation.Rules.BaseRules;

namespace Core.Validation.Rules.StudentAssignmentRules;

/// <summary>
/// Validation rule that checks if a student has too many regional events in their assignments
/// </summary>
public class TooManyRegionalEventsAssignmentRule : EventCountThresholdRuleBase
{
    protected override int GetCount(StudentEventStatistics statistics) =>
        statistics.Events.Count(e => e.RegionalEvent);

    protected override int GetThreshold(ValidationConfiguration config) => config.MaxRegionalEvents;

    protected override bool ViolatesThreshold(int count, int threshold) => count > threshold;

    protected override ValidationSeverity GetBaseSeverity(ValidationConfiguration config) =>
        config.TooManyRegionalEventsSeverity;

    protected override string Code => "TOO_MANY_REGIONAL_EVENTS";

    protected override string GetMessage(int count, int threshold) =>
        $"Student has {count} regional events (max recommended: {threshold})";

    protected override string? IconIdentifier => "RegionalEvent";

    protected override Dictionary<string, object> BuildAdditionalMetadata(StudentEventStatistics statistics, ValidationConfiguration config)
    {
        return new Dictionary<string, object>
        {
            { "RegionalEventCount", GetCount(statistics) },
            { "MaxRegionalEvents", config.MaxRegionalEvents }
        };
    }
}