using Microsoft.AspNetCore.Components;
using System;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
using System.Threading.Tasks;

namespace BlazorAceEditor
{
    public partial class AceEditor : IAsyncDisposable
    {
        [Inject] private AceEditorJsInterop JsInterop { get; set; }

        /// <summary>
        /// 附加属性
        /// </summary>
        [Parameter(CaptureUnmatchedValues = true)]
        public Dictionary<string, object> Attributes { get; set; }

        [Parameter] public EventCallback<AceEditor> OnChanged { get; set; }

        [Parameter] public EventCallback<AceEditor> OnLoad { get; set; }

        public string ElementId { get; } = $"BlazorAceEditor_{Guid.NewGuid():N}";

        protected override async Task OnInitializedAsync()
        {
            await base.OnInitializedAsync();
        }

        protected override async Task OnAfterRenderAsync(bool firstRender)
        {
            await base.OnAfterRenderAsync(firstRender);
            if (firstRender)
            {
                AceEditorJsCallbackManager.AddEventHandler(ElementId, "onChange", new Func<Task>(() => OnChanged.InvokeAsync(this)));
                AceEditorJsCallbackManager.AddEventHandler(ElementId, "onLoad", new Func<Task>(() => OnLoad.InvokeAsync(this)));

                await CreateEditor();
            }
        }

        public async ValueTask DisposeAsync()
        {
            AceEditorJsCallbackManager.DisposeObject(ElementId);
            await DestroyEditor();
        }

        //glues base

        private Task InvokeVoid([CallerMemberName] string methodName = null) => JsInterop.InvokeVoid(ElementId, methodName);

        private Task InvokeVoidP1(object arg0, [CallerMemberName] string methodName = null) => JsInterop.InvokeVoidP1(ElementId, arg0, methodName);

        private ValueTask<T> Invoke<T>([CallerMemberName] string methodName = null) => JsInterop.Invoke<T>(ElementId, methodName);

        //glues

        private Task CreateEditor() => InvokeVoid();

        private Task DestroyEditor() => InvokeVoid();

        public Task SetTheme(string themeName) => InvokeVoidP1(themeName);

        public Task SetLang(string langName) => InvokeVoidP1(langName);

        public Task SetInfinityMaxLines() => InvokeVoid();

        public Task SetMaxLines(int maxLines) => InvokeVoidP1(maxLines);

        public Task SetMinLines(int minLines) => InvokeVoidP1(minLines);

        public ValueTask<string> GetValue() => Invoke<string>();

        public Task SetValue(string value) => InvokeVoidP1(value);

        public Task SetFontSize(int value) => InvokeVoidP1(value);

        public Task ClearSelection() => InvokeVoid();
    }
}