modify wechat js sign

app/controllers/wechats/js_sdk_signatures_controller.rb

@@ -2,10 +2,10 @@ class Wechats::JsSdkSignaturesController < ApplicationController
   def create
     timestamp = Time.now.to_i
     noncestr = ('A'..'z').to_a.sample(8).join
-    signature = Util::Wechat.js_sdk_signature(params[:url], noncestr, timestamp)
+    signature = Wechat::OfficialAccount.js_sdk_signature(params[:url], noncestr, timestamp)
 
-    render_ok(appid: Util::Wechat.appid, timestamp: timestamp, noncestr: noncestr, signature: signature)
+    render_ok(appid: Wechat::OfficialAccount.appid, timestamp: timestamp, noncestr: noncestr, signature: signature)
-  rescue Util::WechatStore::Error => ex
+  rescue Wechat::Error => ex
     render_error(ex.message)
   end
 end

app/libs/wechat.rb

@@ -0,0 +1,2 @@
+module Wechat
+end

app/libs/wechat/client.rb

@@ -1,8 +1,6 @@
-class Util::WechatStore
+class Wechat::Client
   BASE_SITE = 'https://api.weixin.qq.com'.freeze
 
-  Error = Class.new(StandardError)
-
   attr_reader :appid, :secret
 
   def initialize(appid, secret)
@@ -60,11 +58,11 @@ class Util::WechatStore
     Rails.logger.error("[wechat] response:#{response.status} #{result.inspect}")
 
     if response.status != 200
-      raise Error, result.inspect
+      raise Wechat::Error.parse(result)
     end
 
     if result['errcode'].present? && result['errcode'].to_i.nonzero?
-      raise Error, result.inspect
+      raise Wechat::Error.parse(result)
     end
 
     result

app/libs/wechat/error.rb

@@ -0,0 +1,14 @@
+class Wechat::Error < StandardError
+  attr_reader :code
+
+  def initialize(code, message)
+    super message
+    @code = code
+  end
+
+  class << self
+    def parse(result)
+      new(result['errcode'], result['errmsg'])
+    end
+  end
+end

app/libs/wechat/official_account.rb

@@ -1,8 +1,4 @@
-module Util::Wechat
+class Wechat::OfficialAccount
-  BASE_SITE = 'https://api.weixin.qq.com'.freeze
-
-  Error = Class.new(StandardError)
-
   class << self
     attr_accessor :appid, :secret
 
@@ -13,15 +9,15 @@ module Util::Wechat
     end
 
     def access_token
-      wechat_store.access_token
+      client.access_token
     end
 
     def jsapi_ticket
-      wechat_store.jsapi_ticket
+      client.jsapi_ticket
     end
 
-    def wechat_store
+    def client
-      @_wechat_store ||= ::Util::WechatStore.new(appid, secret)
+      @_client ||= Wechat::Client.new(appid, secret)
     end
   end
 end

config/initializers/wechat_init.rb

@@ -12,5 +12,5 @@ rescue => ex
   wechat_config = {}
 end
 
-Util::Wechat.appid  = wechat_config['appid']
+Wechat::OfficialAccount.appid  = wechat_config['appid']
-Util::Wechat.secret = wechat_config['secret']
+Wechat::OfficialAccount.secret = wechat_config['secret']