using System;
using System.Collections.Generic;
using System.Linq;
using AntDesign.Forms;
using AntDesign.Internal;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Forms;

namespace AntDesign
{
    public partial class Form<TModel> : AntDomComponentBase, IForm
    {
        private readonly string _prefixCls = "ant-form";

        [Parameter]
        public string Layout { get; set; } = FormLayout.Horizontal;

        [Parameter]
        public RenderFragment<TModel> ChildContent { get; set; }

        [Parameter]
        public ColLayoutParam LabelCol { get; set; }

        [Parameter]
        public ColLayoutParam WrapperCol { get; set; }

        [Parameter]
        public string Size { get; set; }

        [Parameter]
        public TModel Model { get; set; }

        [Parameter]
        public bool Loading { get; set; }

        [Parameter]
        public EventCallback<EditContext> OnFinish { get; set; }

        [Parameter]
        public EventCallback<EditContext> OnFinishFailed { get; set; }

        public bool IsModified => _editContext.IsModified();

        private EditContext _editContext;
        private IList<IFormItem> _formItems = new List<IFormItem>();
        private IList<IControlValueAccessor> _controls = new List<IControlValueAccessor>();

        ColLayoutParam IForm.WrapperCol => WrapperCol;

        ColLayoutParam IForm.LabelCol => LabelCol;

        EditContext IForm.EditContext => _editContext;

        string IForm.Size => Size;

        protected override void OnInitialized()
        {
            base.OnInitialized();

            SetClass();
            _editContext = new EditContext(Model);
        }

        protected void SetClass()
        {
            this.ClassMapper.Clear()
                .Add(_prefixCls)
                .Add($"{_prefixCls}-{Layout.ToLower()}")
               ;
        }

        public void HandleValidSubmit()
        {
        }

        public void Reset()
        {
            _controls.ForEach(item => item.Reset());
        }

        void IForm.AddFormItem(IFormItem formItem)
        {
            _formItems.Add(formItem);
        }

        void IForm.AddControl(IControlValueAccessor valueAccessor)
        {
            this._controls.Add(valueAccessor);
        }

        public bool Validate()
        {
            return _editContext.Validate();
        }

    }
}