using System;

using UnityEngine;

namespace Java.Util
{
    public class WeakHashMap<K, V> : global::Java.Util.AbstractMap<K, V>, global::Java.Util.Map<K, V> where K : class where V : class
    {
        private static readonly IntPtr _classObject;
        private static readonly IntPtr _cachedConstructorId0;
        private static readonly IntPtr _cachedConstructorId1;
        private static readonly IntPtr _cachedConstructorId2;
        private static readonly IntPtr _cachedConstructorId3;
        private static readonly IntPtr _cachedMethodId0;
        private static readonly IntPtr _cachedMethodId1;

        static WeakHashMap()
        {
            AndroidJNI.AttachCurrentThread();
            IntPtr classObject = AndroidJNI.FindClass("java/util/WeakHashMap");
            _classObject = AndroidJNI.NewGlobalRef(classObject);
            AndroidJNI.DeleteLocalRef(classObject);
            _cachedConstructorId0 = AndroidJNI.GetMethodID(_classObject, "<init>", "(IF)V");
            _cachedConstructorId1 = AndroidJNI.GetMethodID(_classObject, "<init>", "(I)V");
            _cachedConstructorId2 = AndroidJNI.GetMethodID(_classObject, "<init>", "()V");
            _cachedConstructorId3 = AndroidJNI.GetMethodID(_classObject, "<init>", "(Ljava/util/Map;)V");
            _cachedMethodId0 = AndroidJNI.GetMethodID(_classObject, "forEach", "(Ljava/util/function/BiConsumer;)V");
            _cachedMethodId1 = AndroidJNI.GetMethodID(_classObject, "replaceAll", "(Ljava/util/function/BiFunction;)V");
        }

        public WeakHashMap(int initialCapacity, float loadFactor) : base(IntPtr.Zero)
        {
            try
            {
                AndroidJNI.PushLocalFrame(0);
                jvalue[] args_ =
                        new jvalue[]
                        {
                            new jvalue { i = initialCapacity },
                            new jvalue { f = loadFactor }
                        };
                IntPtr rawObject_ = AndroidJNI.NewObject(_classObject, _cachedConstructorId0, args_);
                _rawObject = AndroidJNI.NewGlobalRef(rawObject_);
            }
            finally
            {
                AndroidJNI.PopLocalFrame(IntPtr.Zero);
            }
        }

        public WeakHashMap(int initialCapacity) : base(IntPtr.Zero)
        {
            try
            {
                AndroidJNI.PushLocalFrame(0);
                jvalue[] args_ = new jvalue[] { new jvalue { i = initialCapacity } };
                IntPtr rawObject_ = AndroidJNI.NewObject(_classObject, _cachedConstructorId1, args_);
                _rawObject = AndroidJNI.NewGlobalRef(rawObject_);
            }
            finally
            {
                AndroidJNI.PopLocalFrame(IntPtr.Zero);
            }
        }

        public WeakHashMap() : base(IntPtr.Zero)
        {
            try
            {
                AndroidJNI.PushLocalFrame(0);
                jvalue[] args_ = new jvalue[] {  };
                IntPtr rawObject_ = AndroidJNI.NewObject(_classObject, _cachedConstructorId2, args_);
                _rawObject = AndroidJNI.NewGlobalRef(rawObject_);
            }
            finally
            {
                AndroidJNI.PopLocalFrame(IntPtr.Zero);
            }
        }

        public WeakHashMap(global::Java.Util.Map<K, V> m) : base(IntPtr.Zero)
        {
            try
            {
                AndroidJNI.PushLocalFrame(0);
                jvalue[] args_ = new jvalue[] { new jvalue { l = m.GetRawObject() } };
                IntPtr rawObject_ = AndroidJNI.NewObject(_classObject, _cachedConstructorId3, args_);
                _rawObject = AndroidJNI.NewGlobalRef(rawObject_);
            }
            finally
            {
                AndroidJNI.PopLocalFrame(IntPtr.Zero);
            }
        }

        public WeakHashMap(IntPtr rawObject) : base(IntPtr.Zero)
        {
            if (rawObject == IntPtr.Zero)
            {
                return;
            }
            try
            {
                AndroidJNI.PushLocalFrame(0);
                IntPtr instanceClassObject_ = AndroidJNI.GetObjectClass(rawObject);
                if (!AndroidJNI.IsAssignableFrom(instanceClassObject_, _classObject))
                {
                    throw new ArgumentException("The provided reference is not an instance of WeakHashMap.");
                }
                _rawObject = AndroidJNI.NewGlobalRef(rawObject);
            }
            finally
            {
                AndroidJNI.PopLocalFrame(IntPtr.Zero);
            }
        }

        public void ForEach(global::Java.ExternalType.Java.Util.Function.BiConsumer<K, V> action)
        {
            try
            {
                AndroidJNI.PushLocalFrame(0);
                jvalue[] args_ = new jvalue[] { new jvalue { l = action.GetRawObject() } };
                AndroidJNI.CallVoidMethod(_rawObject, _cachedMethodId0, args_);
            }
            finally
            {
                AndroidJNI.PopLocalFrame(IntPtr.Zero);
            }
        }

        public void ReplaceAll(global::Java.ExternalType.Java.Util.Function.BiFunction<K, V, V> function)
        {
            try
            {
                AndroidJNI.PushLocalFrame(0);
                jvalue[] args_ = new jvalue[] { new jvalue { l = function.GetRawObject() } };
                AndroidJNI.CallVoidMethod(_rawObject, _cachedMethodId1, args_);
            }
            finally
            {
                AndroidJNI.PopLocalFrame(IntPtr.Zero);
            }
        }

        public static explicit operator IntPtr(WeakHashMap<K, V> wrapper)
        {
            return wrapper.GetRawObject();
        }

        public static explicit operator WeakHashMap<K, V>(IntPtr rawObject)
        {
            return new WeakHashMap<K, V>(rawObject);
        }

        public new static IntPtr GetRawClass()
        {
            return AndroidJNI.NewLocalRef(_classObject);
        }
    } // end class WeakHashMap
} // end namespace Java.Util
