WeChat Media Platform Authentication

An Elixir WeChat Media Platform Authentication Client Library 微信第三方平台授权

Installation

1. Add wechat_mp_auth to your list of dependencies in mix.exs:

   def deps do [{:wechat_mp_auth, "~> 0.0.3"}] end

2. Ensure wechat_mp_auth is started before your application:

   def application do [applications: [:wechat_mp_auth]] end

Usage

1. Initialize a client with client_id, client_secret, and redirect_uri.

client = WechatMPAuth.Client.new([
  strategy: WechatMPAuth.Strategy.AuthCode, #default
  client_id: "client_id",
  client_secret: "abc123",
  redirect_uri: "https://example.com/auth/callback"
])

2. Use get_authorize_url to generate: - the authorization URL using component_verify_ticket received from WeChat - client that contains component_access_token

{client, url} = WechatMPAuth.Client.get_authorize_url(client, [verify_ticket: verify_ticket])
# component_access_token => `client.params["component_access_token"]`
# authorization URL => "https://mp.weixin.qq.com/cgi-bin/componentloginpage?component_appid=client_id&pre_auth_code=preauthcode@@@xxx&redirect_uri=https://example.com/auth/callback"

3. After authorizing from the above URL, server redirects to redirect_uri with query params: authorization_code and expires_in (https://example.com/auth/callback?auth_code=@@@&expires_in=600). Use component_access_token and authorization_code to get authorizer access token.

{:ok, authorizer_access_token} = client |> WechatMPAuth.Client.get_authorizer_access_token([authorization_code: authorization_code, component_access_token: "component-access-token"])

3. Use component_access_token to make a request for resources.

resource = WechatMPAuth.ComponentAccessToken.post!(token, "/component/api_get_authorizer_info", %{component_appid: "xxx", authorizer_appid: "xxx"}).body

License

Please see LICENSE for licensing details.