From 4f935e65c79a7b3bd55138cd49902b55c420f446 Mon Sep 17 00:00:00 2001
From: Jonathan B <greenbigfrog@gmail.com>
Date: Sun, 24 May 2020 21:15:57 +0200
Subject: Update for twitch auth update

---
 shard.yml                    |  2 +-
 src/twitcr.cr                |  2 +-
 src/twitcr/client.cr         |  7 ++++---
 src/twitcr/mappings/token.cr |  7 +++++++
 src/twitcr/rest.cr           | 22 +++++++++++++++++++++-
 5 files changed, 34 insertions(+), 6 deletions(-)
 create mode 100644 src/twitcr/mappings/token.cr

diff --git a/shard.yml b/shard.yml
index 7de99df..1452b12 100644
--- a/shard.yml
+++ b/shard.yml
@@ -1,5 +1,5 @@
 name: twitcr
-version: 0.2.0
+version: 0.3.0
 
 authors:
   - Jonathan B. <greenbigfrog@gmail.com>
diff --git a/src/twitcr.cr b/src/twitcr.cr
index 0d63180..9bb13cf 100644
--- a/src/twitcr.cr
+++ b/src/twitcr.cr
@@ -1,5 +1,5 @@
 require "./twitcr/**"
 
 module Twitcr
-  VERSION = "0.2.0"
+  VERSION = "0.3.0"
 end
diff --git a/src/twitcr/client.cr b/src/twitcr/client.cr
index 74b2a80..51dedad 100644
--- a/src/twitcr/client.cr
+++ b/src/twitcr/client.cr
@@ -4,11 +4,12 @@ require "./mappings/*"
 class Twitcr::Client
   include REST
 
-  getter token : String
+  getter token : String?
   getter client_id : String
+  getter client_secret : String
 
-  def initialize(@token, @client_id)
-    @token = "Bearer" + @token
+  def initialize(@client_secret, @client_id)
+    @token = nil
   end
 
   def user?(name : String)
diff --git a/src/twitcr/mappings/token.cr b/src/twitcr/mappings/token.cr
new file mode 100644
index 0000000..a141a68
--- /dev/null
+++ b/src/twitcr/mappings/token.cr
@@ -0,0 +1,7 @@
+struct Twitcr::Token
+  JSON.mapping({
+    access_token: String,
+    expires_in: Int64,
+    token_type: String
+  })
+end
diff --git a/src/twitcr/rest.cr b/src/twitcr/rest.cr
index 1de8d6f..cb2c1a0 100644
--- a/src/twitcr/rest.cr
+++ b/src/twitcr/rest.cr
@@ -11,7 +11,9 @@ module Twitcr::REST
 
   # Executes an HTTP request against the API_BASE url
   def request(method : String, route : String, version = "5", headers = HTTP::Headers.new, body : String? = nil)
-    headers["Authorization"] = @token
+    get_token unless @token
+
+    headers["Authorization"] = @token || "test"
     headers["Client-ID"] = @client_id
 
     response = HTTP::Client.exec(
@@ -21,6 +23,12 @@ module Twitcr::REST
       tls: SSL_CONTEXT
     )
 
+    if response.status_code == 401
+      get_token
+      puts "Had to get new token"
+      return request(method, route, version, headers, body)
+    end
+
     response.body
   end
 
@@ -47,4 +55,16 @@ module Twitcr::REST
 
     list.data.first
   end
+
+  def get_token
+    response = HTTP::Client.exec(
+      "POST",
+      "https://id.twitch.tv/oauth2/token?client_id=#{@client_id}&client_secret=#{@client_secret}&grant_type=client_credentials",
+      tls: SSL_CONTEXT
+    )
+
+    access_token = Token.from_json(response.body).access_token
+
+    @token = "Bearer #{access_token}"
+  end
 end
-- 
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