using PagedList;
using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Threading.Tasks;
using System.Web;
using System.Web.Http;

/// <summary>
/// lianyouController 的摘要描述
/// </summary>
[ezAuthorize]
public class lianyouController : ApiController
{
    private Model.ezEntities _db = new Model.ezEntities();

    [HttpPost]
    [Route("api/lianyou/getfollowers")]
    public async Task<IHttpActionResult> GetGuadanFollowers(int page, int pageSize, string searchName = null)
    {
        // IQueryable 可讓 EF 在資料庫層面執行過濾和投影
        var qry = _db.followers.AsQueryable();

        if (!string.IsNullOrEmpty(searchName))
        {
            qry = qry.Where(a => (a.u_name ?? "").Contains(searchName) || (a.phone ?? "").Contains(searchName));
        }

        var count = await qry.CountAsync();

        // 投影到只需要的欄位
        var projected = qry
            .OrderBy(a => a.f_number)
            .Select(a => new
            {
                num = a.num,
                u_name = a.u_name,
                phone = a.phone,
                sex = a.sex,
            });

        // 分頁
        var data = projected
            .Skip((page - 1) * pageSize)
            .Take(pageSize)
            .ToList(); // 如果使用 EF Core 可用 ToListAsync()

        return Ok(new { data = data, count = count });
    }

}