var $ = {
  extend: function(flag, p, c) {
    var c = c || {};
    for (var i in p) {
      if (!p.hasOwnProperty(i)) {
        continue;
      }
      if (typeof p[i] === 'object') {
        c[i] = (p[i].constructor === Array) ? [] : {};
        deepCopy(p[i], c[i]);
      } else {
        c[i] = p[i];
      }
    }
    return c;
  },
  each: function(object, callback, args) {
    var name, i = 0,
      length = object.length,
      isObj = length === undefined || typeof object == 'function';

    if (args) {
      if (isObj) {
        for (name in object) {
          if (callback.apply(object[name], args) === false) {
            break;
          }
        }
      } else {
        for (; i < length;) {
          if (callback.apply(object[i++], args) === false) {
            break;
          }
        }
      }

      // A special, fast, case for the most common use of each  
    } else {
      if (isObj) {
        for (name in object) {
          if (callback.call(object[name], name, object[name]) === false) {
            break;
          }
        }
      } else {
        for (; i < length;) {
          if (callback.call(object[i], i, object[i++]) === false) {
            break;
          }
        }
      }
    }

    return object;
  }
}

function sha1(x, blen) {
  function add32(a, b) {
    var lsw = (a & 0xFFFF) + (b & 0xFFFF);
    var msw = (a >> 16) + (b >> 16) + (lsw >> 16);
    return (msw << 16) | (lsw & 0xFFFF);
  }

  function AA(a, b, c, d, e) {
    b = (b >>> 27) | (b << 5);
    var lsw = (a & 0xFFFF) + (b & 0xFFFF) + (c & 0xFFFF) + (d & 0xFFFF) + (e & 0xFFFF);
    var msw = (a >> 16) + (b >> 16) + (c >> 16) + (d >> 16) + (e >> 16) + (lsw >> 16);
    return (msw << 16) | (lsw & 0xFFFF);
  }

  function RR(w, j) {
    var n = w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16];
    return (n >>> 31) | (n << 1);
  }

  var len = blen * 8;
  x[len >> 5] |= 0x80 << (24 - len % 32);
  x[((len + 64 >> 9) << 4) + 15] = len;
  var w = new Array(80);

  var k1 = 0x5A827999;
  var k2 = 0x6ED9EBA1;
  var k3 = 0x8F1BBCDC;
  var k4 = 0xCA62C1D6;

  var h0 = 0x67452301;
  var h1 = 0xEFCDAB89;
  var h2 = 0x98BADCFE;
  var h3 = 0x10325476;
  var h4 = 0xC3D2E1F0;

  for (var i = 0; i < x.length; i += 16) {
    var j = 0;
    var t;
    var a = h0;
    var b = h1;
    var c = h2;
    var d = h3;
    var e = h4;
    while (j < 16) {
      w[j] = x[i + j];
      t = AA(e, a, d ^ (b & (c ^ d)), w[j], k1);
      e = d;
      d = c;
      c = (b >>> 2) | (b << 30);
      b = a;
      a = t;
      j++;
    }
    while (j < 20) {
      w[j] = RR(w, j);
      t = AA(e, a, d ^ (b & (c ^ d)), w[j], k1);
      e = d;
      d = c;
      c = (b >>> 2) | (b << 30);
      b = a;
      a = t;
      j++;
    }
    while (j < 40) {
      w[j] = RR(w, j);
      t = AA(e, a, b ^ c ^ d, w[j], k2);
      e = d;
      d = c;
      c = (b >>> 2) | (b << 30);
      b = a;
      a = t;
      j++;
    }
    while (j < 60) {
      w[j] = RR(w, j);
      t = AA(e, a, (b & c) | (d & (b | c)), w[j], k3);
      e = d;
      d = c;
      c = (b >>> 2) | (b << 30);
      b = a;
      a = t;
      j++;
    }
    while (j < 80) {
      w[j] = RR(w, j);
      t = AA(e, a, b ^ c ^ d, w[j], k4);
      e = d;
      d = c;
      c = (b >>> 2) | (b << 30);
      b = a;
      a = t;
      j++;
    }
    h0 = add32(h0, a);
    h1 = add32(h1, b);
    h2 = add32(h2, c);
    h3 = add32(h3, d);
    h4 = add32(h4, e);
  }
  return [h0, h1, h2, h3, h4];
}

var encoding = {
  strToBe32s: function(str) {
    var be = [];
    var len = Math.floor(str.length / 4);
    var i, j;
    for (i = 0, j = 0; i < len; i++, j += 4) {
      be[i] = ((str.charCodeAt(j) & 0xff) << 24) | ((str.charCodeAt(j + 1) & 0xff) << 16) | ((str.charCodeAt(j + 2) & 0xff) << 8) | (str.charCodeAt(j + 3) & 0xff);
    }
    while (j < str.length) {
      be[j >> 2] |= (str.charCodeAt(j) & 0xff) << (24 - (j * 8) % 32);
      j++;
    }
    return be;
  },

  be32sToHex: function(be) {
    var hex = '0123456789ABCDEF';
    var str = '';
    for (var i = 0; i < be.length * 4; i++) {
      str += hex.charAt((be[i >> 2] >> ((3 - i % 4) * 8 + 4)) & 0xF) + hex.charAt((be[i >> 2] >> ((3 - i % 4) * 8)) & 0xF);
    }
    return str;
  }
};

$.encoding = encoding;
var digests = {
  hexSha1Str: function(str) {
    return $.encoding.be32sToHex($.digests.sha1Str(str));
  },
  sha1Str: function(str) {
    return sha1($.encoding.strToBe32s(str), str.length);
  }
};
$.digests = digests;

var utils = {
  inArray: function(needle, array, bool) {
    if (typeof needle == "string" || typeof needle == "number") {
      var len = array.length;
      for (var i = 0; i < len; i++) {
        if (needle === array[i]) {
          if (bool) {
            return i;
          }
          return true;
        }
      }
      return false;
    }
  }
};
$.utils = utils;

var api = function(openAppKey, openAppSecret, url) {
  return {
    test1: function() {
      console.log("test1");
    },
    sign: function(params, ignores) {
      var timestamp = (new Date()).valueOf();
      var appSecret = openAppSecret;
      var defaults = {
        appKey: openAppKey,
        v: '1.0',
        format: 'json',
        locale: 'zh-CN',
        client: 'weixin',
        timestamp: timestamp
      };
      var options = $.extend(true, defaults, params);
      var paramNames = [];
      $.each(options, function(key, value) {
        if (!$.utils.inArray(key, ignores, false)) {
          paramNames.push(key);
        }
      });

      paramNames = paramNames.sort();

      var stringBuilder = [];
      stringBuilder.push(appSecret);

      $.each(paramNames, function(inx, value) {
        stringBuilder.push(value);
        stringBuilder.push(options[value]);
      });

      stringBuilder.push(appSecret);
      options.sign = $.digests.hexSha1Str(stringBuilder.join(""));

      return options;
    },
    ajax: function(params, ignores, success, error) {
      var data = this.sign(params, ignores);
      wx.request({
        url: url,
        method: 'POST',
        data: data,
        dataType: 'json',
        header: {
          'content-type': 'application/x-www-form-urlencoded'
        },
        success: function(json) {
          if (json.errorToken) {
            if (typeof error == 'function') {
              error.call(error, json);
            }
          } else {
            if (typeof success == 'function') {
              success.call(success, json);
            }
          }
        },
        fail: function() {
          if (typeof error == 'function') {
            var json = {
              "errorToken": "@@$-ERROR_TOKEN$-@@",
              "code": "0",
              "message": "网络好像有问题，无法访问云端服务!",
              "solution": "请检查本机网络是否能正常访问互联网",
              "subErrors": ""
            };
            error.call(error, json);
          }
        }
      });
    }
  }
}

/**
 * 会员授权
 */
var memberApi = function (openAppKey, openAppSecret, url) {
  return {
    test1: function () {
      console.log("test1");
    },
    sign: function (params, ignores) {
      var timestamp = (new Date()).valueOf();
      var appSecret = openAppSecret;
      var defaults = {
        appKey: openAppKey,
        v: '1.0',
        format: 'json',
        locale: 'zh-CN',
        client: 'web',
        timestamp: timestamp
      };
      var options = $.extend(true, defaults, params);
      var paramNames = [];
      $.each(options, function (key, value) {
        if (!$.utils.inArray(key, ignores, false)) {
          paramNames.push(key);
        }
      });

      paramNames = paramNames.sort();

      var stringBuilder = [];
      stringBuilder.push(appSecret);

      $.each(paramNames, function (inx, value) {
        stringBuilder.push(value);
        stringBuilder.push(options[value]);
      });

      stringBuilder.push(appSecret);
      options.sign = $.digests.hexSha1Str(stringBuilder.join(""));

      return options;
    },
    ajax: function (params, ignores, success, error) {
      var data = this.sign(params, ignores);
      wx.request({
        url: url,
        method: 'POST',
        data: data,
        dataType: 'json',
        header: {
          'content-type': 'application/x-www-form-urlencoded'
        },
        success: function (json) {
          if (json.errorToken) {
            if (typeof error == 'function') {
              error.call(error, json);
            }
          } else {
            if (typeof success == 'function') {
              success.call(success, json);
            }
          }
        },
        fail: function () {
          if (typeof error == 'function') {
            var json = {
              "errorToken": "@@$-ERROR_TOKEN$-@@",
              "code": "0",
              "message": "网络好像有问题，无法访问云端服务!",
              "solution": "请检查本机网络是否能正常访问互联网",
              "subErrors": ""
            };
            error.call(error, json);
          }
        }
      });
    }
  }

}

module.exports = {
  api: api,
  memberApi: memberApi
};