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

namespace RJW_patch_Autopsy
{
    [HarmonyPatch(typeof(NewMedicalRecipesUtility), "TraverseBody")]
    public static class NewMedicalRecipesUtilityPatch
    {
        [HarmonyPrefix]
        public static bool AddRjwParts(RecipeInfo recipeInfo, Corpse corpse, float skillChance,
            ref IEnumerable<Thing> __result)
        {
            //Collect vanilla parts
            var core = corpse.InnerPawn.RaceProps.body.corePart;
            var queue = new List<BodyPartRecord> {core};
            var hediffSet = corpse.InnerPawn.health.hediffSet;
            var results = new List<Thing>();
            var damagedParts = new List<BodyPartRecord>();
            while (queue.Count > 0)
            {
                var part = queue.First();
                queue.Remove(part);
                //Drop parts and bionics that are higher on the body tree.
                if (NewMedicalRecipesUtility.TryGetParts(corpse, recipeInfo, part, skillChance, ref results,
                        ref damagedParts) && core != part)
                    continue;
                queue.AddRange(part.parts.Where(x => !hediffSet.PartIsMissing(x)));
            }

            foreach (var part in damagedParts)
                NewMedicalRecipesUtility.DamageHarvested(corpse.InnerPawn, part);

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

            //Log.Message(String.Format("Collected {0} natural and {1} artifical hediffs", rjwNaturalDiffs.Count(), rjwArtificialDiffs.Count()));

            //Collect parts from hediffs rjw's surgery methods
            var rjwNaturalThings = rjwNaturalDiffs.Select(SexPartAdder.recipePartRemover).ToList();
            var rjwArtificialThings =
                rjwArtificialDiffs.Select(SexPartAdder.recipePartRemover).ToList();

            //Log.Message(String.Format("Collected {0} things from {1} natural and {2} things from {3} artifical hediffs",
            //rjwArtificialThings.Count(), rjwNaturalDiffs.Count(), rjwArtificialThings.Count(), rjwArtificialDiffs.Count()));

            //Simulate success chance scaled with skill etc.
            rjwNaturalThings.ToList().ForEach(t =>
            {
                if (Rand.Chance(Math.Min(skillChance, recipeInfo.NaturalChance))) results.Add(t);
            });
            rjwArtificialThings.ToList().ForEach(t =>
            {
                if (Rand.Chance(Math.Min(skillChance, recipeInfo.BionicChance))) results.Add(t);
            });

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

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

            return false;
        }
    }
}