From 0aaac2879b2c1d622e9e1ace92fc359c1d07855f Mon Sep 17 00:00:00 2001
From: ohyecloudy <ohyecloudy@gmail.com>
Date: Wed, 26 Apr 2023 21:05:54 +0900
Subject: [PATCH] =?UTF-8?q?:star:=20twitter=20account=EC=97=90=20=EA=B4=80?=
 =?UTF-8?q?=ED=95=9C=20=EC=84=A4=EC=A0=95=EC=9D=84=20=EC=9D=BD=EA=B3=A0=20?=
 =?UTF-8?q?=EC=8B=A4=ED=96=89?=
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- twitter account 정보로 TwitterProcess 프로세스를 만드는 사전 작업
- 필요한 정보를 읽을 뿐 프로세스를 생성하지는 않는다
- runtime.exs
  - 환경 변수에서 설정을 읽어서 :tbot800, :tbot_accounts 설정
- dev.secret.exs
  - 개발 중에는 바로 :tbot800, :tbot_accounts 설정
  - 버전 컨트롤에서 파일 제외
---
 .gitignore                                    |  2 +
 apps/tbot800/lib/tbot800/application.ex       | 12 +++++
 apps/tbot800/lib/tbot800/default_impl.ex      |  1 +
 .../lib/tbot800/default_impl/supervisor.ex    | 26 ++++++++++
 apps/tbot800/mix.exs                          |  3 +-
 config/config.exs                             |  2 +
 config/dev.exs                                |  5 ++
 config/prod.exs                               |  1 +
 config/runtime.exs                            | 47 +++++++++++++++++++
 config/test.exs                               |  1 +
 10 files changed, 99 insertions(+), 1 deletion(-)
 create mode 100644 apps/tbot800/lib/tbot800/application.ex
 create mode 100644 apps/tbot800/lib/tbot800/default_impl/supervisor.ex
 create mode 100644 config/dev.exs
 create mode 100644 config/prod.exs
 create mode 100644 config/runtime.exs
 create mode 100644 config/test.exs

diff --git a/.gitignore b/.gitignore
index 3a92458..5dd2e67 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,3 +24,5 @@ tbot_800-*.tar
 
 # Temporary files, for example, from tests.
 /tmp/
+
+dev.secret.exs
diff --git a/apps/tbot800/lib/tbot800/application.ex b/apps/tbot800/lib/tbot800/application.ex
new file mode 100644
index 0000000..c6e6418
--- /dev/null
+++ b/apps/tbot800/lib/tbot800/application.ex
@@ -0,0 +1,12 @@
+defmodule Tbot800.Application do
+  use Application
+
+  def start(_type, _args) do
+    children = [
+      Tbot800.DefaultImpl
+    ]
+
+    opts = [strategy: :one_for_one, name: Tbot800.Supervisor]
+    Supervisor.start_link(children, opts)
+  end
+end
diff --git a/apps/tbot800/lib/tbot800/default_impl.ex b/apps/tbot800/lib/tbot800/default_impl.ex
index f988f33..8bef126 100644
--- a/apps/tbot800/lib/tbot800/default_impl.ex
+++ b/apps/tbot800/lib/tbot800/default_impl.ex
@@ -4,6 +4,7 @@ defmodule Tbot800.DefaultImpl do
 
   @behaviour Tbot800.Impl
 
+  defdelegate child_spec(opts), to: __MODULE__.Supervisor
 
   @spec random_tweet(String.t(), String.t(), String.t(), String.t(), [String.t()]) :: :ok
   def random_tweet(consumer_key, consumer_secret, access_token, access_token_secret, contents) do
diff --git a/apps/tbot800/lib/tbot800/default_impl/supervisor.ex b/apps/tbot800/lib/tbot800/default_impl/supervisor.ex
new file mode 100644
index 0000000..03e2b4f
--- /dev/null
+++ b/apps/tbot800/lib/tbot800/default_impl/supervisor.ex
@@ -0,0 +1,26 @@
+defmodule Tbot800.DefaultImpl.Supervisor do
+  use Supervisor
+  require Logger
+
+  def start_link(init_args) do
+    Supervisor.start_link(__MODULE__, init_args, name: __MODULE__)
+  end
+
+  def init(_init_args) do
+    tbot_accounts =
+      case Application.fetch_env(:tbot800, :tbot_accounts) do
+        {:ok, value} -> value
+        :error -> raise "twitter account settings do not exist. see config/runtime.exs"
+      end
+
+    Logger.info("########################################")
+
+    tbot_accounts
+    |> Enum.each(fn account -> Logger.info("tweet items path: #{account[:tweet_items_path]}") end)
+
+    Logger.info("########################################")
+
+    children = []
+    Supervisor.init(children, strategy: :one_for_one)
+  end
+end
diff --git a/apps/tbot800/mix.exs b/apps/tbot800/mix.exs
index bbe4ef0..f516089 100644
--- a/apps/tbot800/mix.exs
+++ b/apps/tbot800/mix.exs
@@ -18,7 +18,8 @@ defmodule Tbot800.MixProject do
   # Run "mix help compile.app" to learn about applications.
   def application do
     [
-      extra_applications: [:logger]
+      extra_applications: [:logger],
+      mod: {Tbot800.Application, []}
     ]
   end
 
diff --git a/config/config.exs b/config/config.exs
index ab23e80..91bb650 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -16,3 +16,5 @@ import Config
 #       format: "$date $time [$level] $metadata$message\n",
 #       metadata: [:user_id]
 #
+
+import_config "#{Mix.env()}.exs"
diff --git a/config/dev.exs b/config/dev.exs
new file mode 100644
index 0000000..9f7a0fe
--- /dev/null
+++ b/config/dev.exs
@@ -0,0 +1,5 @@
+import Config
+
+if File.exists?("config/dev.secret.exs") do
+  import_config "dev.secret.exs"
+end
diff --git a/config/prod.exs b/config/prod.exs
new file mode 100644
index 0000000..becde76
--- /dev/null
+++ b/config/prod.exs
@@ -0,0 +1 @@
+import Config
diff --git a/config/runtime.exs b/config/runtime.exs
new file mode 100644
index 0000000..df01ff1
--- /dev/null
+++ b/config/runtime.exs
@@ -0,0 +1,47 @@
+import Config
+
+# 환경 변수로 설정한 계정 정보를 elixir config로 변환한다.
+# 설정해야 할 환경 변수가 비어있으면 그 후 읽기를 중단한다.
+# 예를 들어 ACCOUNT1_ 설정이 다 되어 있어야지 ACCOUNT2_ 설정 읽기를 시도한다.
+
+accounts =
+  Stream.iterate(1, &(&1 + 1))
+  |> Stream.map(fn index ->
+    [
+      consumer_key: System.get_env("ACCOUNT#{index}_KEY"),
+      consumer_secret: System.get_env("ACCOUNT#{index}_SECRET"),
+      access_token: System.get_env("ACCOUNT#{index}_TOKEN"),
+      access_token_secret: System.get_env("ACCOUNT#{index}_TOKEN_SECRET"),
+      interval:
+        String.to_integer(System.get_env("ACCOUNT#{index}_INTERVAL_MINUTE", "60")) * 1000 * 60,
+      tweet_items_path: System.get_env("ACCOUNT#{index}_TWEET_ITEMS_PATH")
+    ]
+  end)
+  |> Enum.take_while(fn account ->
+    Enum.all?(Keyword.values(account), &(!is_nil(&1)))
+  end)
+
+if accounts != [] do
+  config :tbot800, tbot_accounts: accounts
+end
+
+# 개발 편의가 필요할 때는 dev.secret.exs 같은 파일에 아래와 같은 설정을 넣어서 실행한다
+# config :tbot800,
+#   tbot_accounts: [
+#     [
+#       consumer_key: "consumer_key",
+#       consumer_secret: "consumer_secret",
+#       access_token: "access_token",
+#       access_token_secret: "access_token_secret",
+#       interval: 1000 * 60 * 60,
+#       tweet_items_path: "pqoutes.exs"
+#     ],
+#     [
+#       consumer_key: "consumer_key",
+#       consumer_secret: "consumer_secret",
+#       access_token: "access_token",
+#       access_token_secret: "access_token_secret",
+#       interval: 1000 * 60 * 60,
+#       tweet_items_path: "book_quotes.exs"
+#     ]
+#   ]
diff --git a/config/test.exs b/config/test.exs
new file mode 100644
index 0000000..becde76
--- /dev/null
+++ b/config/test.exs
@@ -0,0 +1 @@
+import Config