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wechat

0.4.5
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Wechat API wrapper in Elixir.

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+102 additions
-13 deletions
  @@ -2,6 +2,9 @@
2 2 Wechat API wrapper in Elixir.
3 3
4 4 [![CircleCI](https://circleci.com/gh/elixir-wechat/wechat.svg?style=svg)](https://circleci.com/gh/elixir-wechat/wechat)
5 + [![codebeat badge](https://codebeat.co/badges/64e7b266-e8f7-428c-8ab1-22a7bf64116a)](https://codebeat.co/projects/github-com-elixir-wechat-wechat-master)
6 + [![Hex.pm](https://img.shields.io/hexpm/v/wechat.svg)](https://hex.pm/packages/wechat)
7 + ![Hex.pm](https://img.shields.io/hexpm/dt/wechat.svg)
5 8
6 9 ## Installation
7 10 ```elixir
  @@ -17,7 +17,7 @@
17 17 <<"lib/wechat/plugs">>,<<"lib/wechat/plugs/request_validator.ex">>,
18 18 <<"lib/wechat/plugs/message_parser.ex">>,<<"lib/wechat/base.ex">>,
19 19 <<"lib/wechat/menu.ex">>,<<"lib/wechat/application.ex">>,
20 - <<"lib/wechat.ex">>,<<"lib/wechat_bypass">>,
20 + <<"lib/wechat/helpers">>,<<"lib/wechat.ex">>,<<"lib/wechat_bypass">>,
21 21 <<"lib/wechat_bypass/assertion.ex">>,<<"lib/wechat_bypass/case.ex">>,
22 22 <<".formatter.exs">>,<<"mix.exs">>,<<"README.md">>,<<"LICENSE.txt">>]}.
23 23 {<<"licenses">>,[<<"MIT">>]}.
  @@ -44,4 +44,4 @@
44 44 {<<"optional">>,true},
45 45 {<<"repository">>,<<"hexpm">>},
46 46 {<<"requirement">>,<<">= 0.0.0">>}]]}.
47 - {<<"version">>,<<"0.4.4">>}.
47 + {<<"version">>,<<"0.4.5">>}.
  @@ -44,6 +44,42 @@ defmodule Wechat do
44 44 def client do
45 45 Wechat.Client.new(config())
46 46 end
47 +
48 + def access_token do
49 + Wechat.Client.access_token(client())
50 + end
51 +
52 + def encrypt_message(msg) do
53 + Wechat.Client.encrypt_message(client(), msg)
54 + end
55 +
56 + if Code.ensure_loaded?(Phoenix.Controller) do
57 + def wechat_config_js(conn, opts \\ []) do
58 + client = client()
59 +
60 + import Phoenix.Controller, only: [current_url: 1]
61 + page_url = current_url(conn)
62 +
63 + debug = Keyword.get(opts, :debug, false)
64 + js_api_list = opts |> Keyword.get(:api, []) |> Enum.join(",")
65 +
66 + %{timestamp: timestamp, noncestr: nonce, signature: signature} =
67 + Wechat.Client.sign_jsapi(client, page_url)
68 +
69 + """
70 + <script type="text/javascript">
71 + wx.config({
72 + debug: #{debug},
73 + jsApiList: ['#{js_api_list}'],
74 + appId: '#{client.appid}',
75 + timestamp: '#{timestamp}',
76 + nonceStr: '#{nonce}',
77 + signature: '#{signature}'
78 + });
79 + </script>
80 + """
81 + end
82 + end
47 83 end
48 84 end
49 85 end
  @@ -16,7 +16,7 @@ if Code.ensure_loaded?(Redix) do
16 16 def child_spec(arg) do
17 17 %{
18 18 id: __MODULE__,
19 - start: {__MODULE__, :start_link, [arg]},
19 + start: {__MODULE__, :start_link, [arg]}
20 20 }
21 21 end
  @@ -4,6 +4,7 @@ defmodule Wechat.Client do
4 4 """
5 5
6 6 alias Wechat.{AccessToken, Base, Config, Error}
7 + alias Wechat.Utils.{MessageEncryptor, SignatureVerifier}
7 8
8 9 @endpoint "https://api.weixin.qq.com/"
9 10
  @@ -86,12 +87,57 @@ defmodule Wechat.Client do
86 87 end
87 88
88 89 @spec access_token(t) :: binary
89 - def access_token(%{access_token: access_token}), do: access_token
90 -
91 - def access_token(%{appid: appid}) do
90 + def access_token(%{access_token: nil, appid: appid}) do
92 91 case Config.adapter().read_token(appid) do
93 92 {:ok, token} -> token.access_token
94 93 :error -> ""
95 94 end
96 95 end
96 +
97 + def access_token(%{access_token: access_token}), do: access_token
98 +
99 + @doc """
100 + Sign jsapi with url.
101 + """
102 + @spec sign_jsapi(t, :binary) :: map
103 + def sign_jsapi(client, url) do
104 + {:ok, %{"ticket" => ticket}} = Wechat.Ticket.get_ticket(client, :jsapi)
105 + timestamp = Wechat.Util.unix_now()
106 + nonce = Wechat.Util.nonce()
107 +
108 + params = %{jsapi_ticket: ticket, noncestr: nonce, timestamp: timestamp, url: url}
109 +
110 + signature =
111 + params
112 + |> Enum.map(fn {k, v} -> "#{k}=#{v}" end)
113 + |> Enum.join("&")
114 + |> Wechat.Util.sha1()
115 +
116 + Map.put(params, :signature, signature)
117 + end
118 +
119 + @doc """
120 + Encrypt message with encoding_aes_key.
121 + """
122 + def encrypt_message(client, msg) do
123 + if client.encoding_aes_key do
124 + %{appid: appid, token: token, encoding_aes_key: encoding_aes_key} = client
125 + msg_encrypt = MessageEncryptor.encrypt(msg, appid, encoding_aes_key)
126 + timestamp = Wechat.Util.unix_now()
127 + nonce = Wechat.Util.nonce()
128 +
129 + msg_signature = SignatureVerifier.sign([token, timestamp, nonce, msg_encrypt])
130 +
131 + reply = %{
132 + msg_encrypt: msg_encrypt,
133 + msg_signature: msg_signature,
134 + timestamp: timestamp,
135 + nonce: nonce
136 + }
137 +
138 + {:ok, reply}
139 + else
140 + {:error, msg}
141 + end
142 + end
97 143 end
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