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CHANGELOG.md

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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[Unreleased]

v0.10.0 (2021-12-10)

v0.9.0 (2020-07-08)

  • Require Elixir >= 1.7

v0.8.0 (2019-04-04)

⚠️ Breaking changes

  • No magic macros
  • Simplified functional interface
  • Added WechatPay.API.download_fund_flow/3.
  • Added WechatPay.API.batch_query_comments/3.
  • Added support for two sign types: :md5 and :sha256.

v0.7.1 (2019-03-19)

  • Update Mix.Tasks.WechatPay.GetSandboxSignkey to print friendly error message.

v0.7.0 (2018-08-30)

  • Require Elixir >= 1.6
  • Make the config ssl_cacert an optional option. (#11)

v0.6.0 (2018-05-16)

⚠️ Breaking changes

v0.5.0 (2018-03-26)

  • Make JSON library an optional dependency, Jason is recommended.

v0.4.1 (2018-03-07)

  • Fixes :xmerl is missing in the application list.

v0.4.0 (2018-01-23)

  • Added WechatPay.Plug.Refund to handle refund notification from Wechat's Payment Gateway
  • Parse XML with :xmerl, drop dependency on sweet_xml.

v0.3.1 (2017-08-04)

  • Added task mix wechat_pay.get_sandbox_signkey to get the Sandbox API Key.
  • Fixes wrong return value of WechatPay.Helper.get_sandbox_signkey/2.

v0.3.0 (2017-08-04)

⚠️ Breaking changes

Guides

Guides are added on the Online documentation. I strongly recommend you to go through it aftre reading this changelog.

You own implementation module

Now you have to define you own pay module, then use WechatPay, with an :otp_app option.

defmodule MyPay do
  use WechatPay, otp_app: :my_app
end

Then config with:

config :my_app, MyPay,
  env: :production,
  appid: "wx8888888888888888",
  mch_id: "1900000109",
  api_key: "192006250b4c09247ec02edce69f6a2d",
  ssl_cacert: File.read!("fixture/certs/rootca.pem"),
  ssl_cert: File.read!("fixture/certs/apiclient_cert.pem"),
  ssl_key: File.read!("fixture/certs/apiclient_key.pem")

This change makes it possible to define multiple pay modules with their own configuration.

Separating payment methods

When use WechatPay in MyPay module, it will generate following payment method modules for you:

  • MyPay.App
  • MyPay.JSAPI
  • MyPay.Native

Each refers to a pay scenario of WechatPay.

Handler

A new module WechatPay.Handler is added to assist processing the data from Wechat's Payment Gateway.

Now the Plugs are only takes the responsibility to commutate with Wechat's Payment Gateway, so you should passed in your own handler:

post "/pay/cb/payment", MyPay.Plug.Payment, [handler: MyPaymentHandler]

and the handler implementation should looks like this:

defmodule MyPaymentHandler do
  use WechatPay.Handler

  @impl WechatPay.Handler
  def handle_data(conn, data) do
    # do something with data
    :ok
  end

  # This is optional
  @impl WechatPay.Handler
  def handle_error(conn, error, data) do
    Logger.error(inspect(error))
  end
end

Sandbox API Key

As the Sandbox API Key is required to be fetched before configuring, so the WechatPay.API.get_sandbox_signkey/0 is moved to WechatPay.Helper.get_sandbox_signkey/2, which accept api_key and mch_id to generate the Sandbox API Key.

iex> WechatPay.Helper.get_sandbox_signkey("wx8888888888888888", "1900000109")
...> {:ok, "the-key"}

SSL configuration

The ssl_cacertfile, ssl_certfile, ssl_keyfile and ssl_password configuration are removed.

Instead, the ssl_cacert, ssl_cert and ssl_key configuration is added, these new configs accepts binary. Which make it possible to read these sensitive data from an ENV.

config :wechat_pay, MyPay,
  ssl_cacert: File.read!("fixture/certs/rootca.pem"),
  ssl_cert: File.read!("fixture/certs/apiclient_cert.pem"),
  ssl_key: "${MY_APP_WECHAT_PAY_SSL_KEY}"

Other changes

  • Added MyPay.App.generate_pay_request/1 to generate pay request for App.

v0.2.0 (2017-06-17)

⚠️ Breaking changes

  • Correctly handle malformed XML data.
  • Added WechatPay.Error.
  • Fixes warnings on Elixir 1.4.
  • Added WechatPay.API.get_sandbox_signkey/0 to get sandbox signkey.
  • Rename WechatPay.Plug.Notify -> WechatPay.Plug.Callback, and rewrite the flow. Now it's easier to handle callbacks from Wehcat's Payment Gateway.
  • Drop support for loading config from {:system, ENV}. It seems not a good idea to do this, consider https://github.com/bitwalker/conform.

v0.1.1 (2016-10-23)

  • Fixes hexdocs.pm does not recognize upcase in URL.
  • Improve docs.

v0.1.0 (2016-10-19)

  • Initial support Wechat Pay's JSAPI, Native and App.