using System.Collections.Generic;

namespace Colosseum.Combat.Simulation
{
    /// <summary>
    /// 여러 빌드를 순회하며 배치 시뮬레이션을 실행합니다.
    /// </summary>
    public static class SimulationBatchRunner
    {
        /// <summary>
        /// 생성된 빌드 목록을 순회 실행하고 결과를 묶어 반환합니다.
        /// </summary>
        public static SimulationBatchResult Run(
            string batchName,
            IReadOnlyList<BuildSimulationInput> builds,
            SimulationRuleSet ruleSet,
            RotationPolicy rotationPolicy,
            IReadOnlyList<string> generationWarnings,
            bool truncated)
        {
            List<SimulationBatchEntry> entries = new List<SimulationBatchEntry>();
            List<string> warnings = new List<string>();

            if (generationWarnings != null)
            {
                for (int i = 0; i < generationWarnings.Count; i++)
                {
                    if (!string.IsNullOrWhiteSpace(generationWarnings[i]))
                        warnings.Add(generationWarnings[i]);
                }
            }

            if (builds != null)
            {
                for (int i = 0; i < builds.Count; i++)
                {
                    BuildSimulationInput build = builds[i];
                    if (build == null)
                        continue;

                    SimulationResult result = BuildSimulationEngine.Run(build, ruleSet, rotationPolicy);
                    entries.Add(new SimulationBatchEntry(build.BuildLabel, result));
                }
            }

            entries.Sort((left, right) =>
            {
                float leftDps = left != null && left.Result != null ? left.Result.AverageDps : 0f;
                float rightDps = right != null && right.Result != null ? right.Result.AverageDps : 0f;
                return rightDps.CompareTo(leftDps);
            });

            SimulationBatchResult batchResult = new SimulationBatchResult();
            batchResult.Initialize(batchName, builds != null ? builds.Count : 0, truncated, entries, warnings);
            return batchResult;
        }
    }
}