using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Web;
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using System.Web.Http.Routing;
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namespace HH.WMS.WebUI
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{
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/// <summary>
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/// 如果请求url如： api/area/controller/x x有可能是actioin或id
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/// 在url中的x位置出现的是以 get put delete post开头的字符串，则当作action,否则就当作id
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/// 如果action为空，则把请求方法赋给action
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/// </summary>
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public class StartWithConstraint : IHttpRouteConstraint
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{
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public string[] array { get; set; }
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public bool match { get; set; }
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private string _id = "id";
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public StartWithConstraint(string[] startwithArray = null)
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{
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if (startwithArray == null)
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startwithArray = new string[] { "GET", "PUT", "DELETE", "POST", "EDIT", "UPDATE", "AUDIT", "DOWNLOAD" };
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this.array = startwithArray;
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}
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public bool Match(System.Net.Http.HttpRequestMessage request, IHttpRoute route, string parameterName, IDictionary<string, object> values, HttpRouteDirection routeDirection)
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{
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if (values == null) // shouldn't ever hit this.
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return true;
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if (!values.ContainsKey(parameterName) || !values.ContainsKey(_id)) // make sure the parameter is there.
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return true;
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var action = values[parameterName].ToString().ToLower();
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if (string.IsNullOrEmpty(action)) // if the param key is empty in this case "action" add the method so it doesn't hit other methods like "GetStatus"
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{
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values[parameterName] = request.Method.ToString();
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}
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else if (string.IsNullOrEmpty(values[_id].ToString()))
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{
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var isidstr = true;
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array.ToList().ForEach(x =>
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{
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if (action.StartsWith(x.ToLower()))
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isidstr = false;
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});
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if (isidstr)
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{
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values[_id] = values[parameterName];
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values[parameterName] = request.Method.ToString();
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}
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}
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return true;
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}
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}
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}
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