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

namespace Core.Validation.Rules.StudentRankingRules;

/// <summary>
/// Validation rule that checks if a student has too many regional events in their rankings
/// </summary>
public class TooManyRegionalEventsRule : EventCountThresholdRankingRuleBase
{
    protected override int GetCount(Student student) =>
        student.RankedEvents.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 GetSeverity(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(Student student, ValidationConfiguration config)
    {
        return new Dictionary<string, object>
        {
            { "RegionalEventCount", GetCount(student) },
            { "MaxRegionalEvents", config.MaxRegionalEvents }
        };
    }
}