namespace LaaProduction.Web.Controllers.API.Search
{
    using LaaProduction.Search;
    using LaaProduction.Web.App_Infrastructure;
    using LaaProductionDI;

    using System;
    using System.Collections.Generic;
    using System.ComponentModel.DataAnnotations;
    using System.Net;
    using System.Net.Http;
    using System.Web.Http;

    [AuthorizeBearer]
    [RoutePrefix("api/Search/Wildcard")]
    public class WildcardController : ApiController
    {
        private readonly ISearchManager searchManager;

        public WildcardController()
            => this.searchManager = LaaServiceProvider.GetService<ISearchManager>();

        [HttpGet]
        public IHttpActionResult Get()
        {
            var fields = this.searchManager.WildcardFields();

            return this.Json(fields);
        }

        [HttpPost]
        public IHttpActionResult Post([FromBody] WildcardSearchModel model)
       {
            IEnumerable<IDictionary<string, object>> results = Array.Empty<IDictionary<string, object>>();

            if (this.ModelState.IsValid)
            {
                results = this.searchManager.SearchWildcard(model.Token, model.SelectedFields);
            }
            else
            {
                return this.ResponseMessage(new HttpResponseMessage
                {
                    Content = new StringContent(this.ModelState.Content()),
                    RequestMessage = this.Request,
                    StatusCode = HttpStatusCode.BadRequest,
                    Version = this.Request.Version
                });
            }

            return this.Json(results);
        }
    }

    public class WildcardSearchModel
    {
        [Required]
        [StringLength(50, MinimumLength = 3)]
        [RegularExpression("^[0-9 a-z-A-Z]+$")]
        public string Token { get; set; }

        public string Fields { get; set; }

        internal IEnumerable<string> SelectedFields
        {
            get
            {
                if (string.IsNullOrWhiteSpace(this.Fields))
                {
                    return Array.Empty<string>();
                }

                return WebUtility
                    .UrlDecode(this.Fields)
                    ?.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries)
                    ?? Array.Empty<string>();
            }
        }
    }
}