using System;
using System.Collections.Generic;
using System.Linq;
using Verse;
using rjw;
using Autopsy;
using HarmonyLib;
using RimWorld;

namespace RJW_patch_Autopsy
{
    [HarmonyPatch(typeof(NewMedicalRecipesUtility), nameof(NewMedicalRecipesUtility.TraverseBody))]
    public static class NewMedicalRecipesUtilityPatch
    {
        private const bool DEBUG = false;

        private static void log(String message)
        {
            if (DEBUG)
            {
                Log.Message(message);
            }
        }

        [HarmonyPostfix]
        public static IEnumerable<Thing> AddRjwParts(IEnumerable<Thing> __result, RecipeInfo recipeInfo, Corpse corpse,
            float skillChance)
        {
            var results = __result.ToList();
            log($"Collected {results.Count} vanilla parts");

            //Collect rjw rediffs
            var rjwNaturalDiffs = (from x in corpse.InnerPawn.health.hediffSet.hediffs
                where x is Hediff_NaturalSexPart
                select x).ToList();
            var rjwArtificialDiffs = (from x in corpse.InnerPawn.health.hediffSet.hediffs
                where x is Hediff_ArtificialSexPart
                select x).ToList();

            log($"Collected {rjwNaturalDiffs.Count} natural and {rjwArtificialDiffs.Count} artificial hediffs");

            //Collect parts from hediffs rjw's surgery methods
            var rjwNaturalThings = rjwNaturalDiffs.Select(hediff =>
            {
                var tmp = SexPartAdder.recipePartRemover(hediff);
                Log.Message($"obtained ${tmp} from ${hediff} via rjw");
                return tmp;
            }).ToList();
            var rjwArtificialThings = rjwArtificialDiffs.Select(hediff =>
            {
                var tmp = SexPartAdder.recipePartRemover(hediff);
                Log.Message($"obtained ${tmp} from ${hediff} via rjw");
                return tmp;
            }).ToList();

            log(
                $"Collected {rjwNaturalThings.Count} things from {rjwNaturalDiffs.Count} natural and {rjwArtificialThings.Count} things from {rjwArtificialDiffs.Count} artificial hediffs");

            //Simulate success chance scaled with skill etc.
            rjwNaturalThings.ForEach(t =>
            {
                CompRottable rot = corpse.TryGetComp<CompRottable>();
                if (DEBUG || rot == null
                        ? corpse.Age <= recipeInfo.CorpseValidAge
                        : rot.RotProgress + (corpse.Age - rot.RotProgress) * recipeInfo.FrozenDecay <=
                          recipeInfo.CorpseValidAge) results.Add(t);
            });
            rjwArtificialThings.ForEach(t =>
            {
                if (DEBUG || Rand.Chance(Math.Min(skillChance, recipeInfo.BionicChance))) results.Add(t);
            });

            //Remove all parts that were tried to harvest from the corpse
            rjwNaturalDiffs.ForEach(d => corpse.InnerPawn.health.RemoveHediff(d));
            rjwArtificialDiffs.ForEach(d => corpse.InnerPawn.health.RemoveHediff(d));

            if (results.Count > recipeInfo.PartNumber)
            {
                var random = new Random();
                results = results.OrderBy(_ => random.Next()).Take(recipeInfo.PartNumber).ToList();
            }

            foreach (var result in results)
            {
                yield return result;
            }
        }
    }
}