Add cron for Singapore time zone

.github/workflows/send_alerts.yml

@@ -1,4 +1,4 @@
-name: Send Alerts
+name: Send alerts for Indian time zone
 
 env:
   MIX_ENV: prod
@@ -25,9 +25,12 @@ jobs:
       - name: Install dependencies
         run: mix deps.get
 
+      - name: compile
+        run: mix compile
+
       - name: Send hacker news email alerts
         shell: bash
         env:
           GMAIL_USERNAME: ${{ secrets.GMAIL_USERNAME }}
           GMAIL_PASSWORD: ${{ secrets.GMAIL_PASSWORD }}
-        run: mix hacker_news_alert
+        run: mix hacker_news_alert +5:30

.github/workflows/send_alerts_for_singapore_tz.yml

@@ -0,0 +1,36 @@
+name: Send alerts for Singapore time zone
+
+env:
+  MIX_ENV: prod
+
+on:
+  schedule:
+    # Everyday at 9 AM
+    - cron: '00 01 * * *'
+    # Everyday at 3 PM
+    - cron: '00 07 * * *'
+    # Everyday at 9 PM
+    - cron: '00 13 * * *'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-elixir@v1
+        with:
+          otp-version: 22.3
+          elixir-version: 1.10.2
+
+      - name: Install dependencies
+        run: mix deps.get
+
+      - name: compile
+        run: mix compile
+
+      - name: Send hacker news email alerts
+        shell: bash
+        env:
+          GMAIL_USERNAME: ${{ secrets.GMAIL_USERNAME }}
+          GMAIL_PASSWORD: ${{ secrets.GMAIL_PASSWORD }}
+        run: mix hacker_news_alert +8:00

.github/workflows/test_send_alerts.yml

@@ -0,0 +1,27 @@
+name: Test send alerts
+
+on: push
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-elixir@v1
+        with:
+          otp-version: 22.3
+          elixir-version: 1.10.2
+
+      - name: Install dependencies
+        run: mix deps.get
+
+      - name: compile
+        run: mix compile
+
+      - name: Send hacker news email alerts for Indian time zone
+        shell: bash
+        run: mix hacker_news_alert +5:30
+
+      - name: Send hacker news email alerts for Singapore time zone
+        shell: bash
+        run: mix hacker_news_alert +8:00

.tool-versions

@@ -1 +1 @@
-elixir 1.10.1
+elixir 1.10.2

lib/mix/tasks/hacker_news_alert.ex

@@ -3,28 +3,70 @@ defmodule Mix.Tasks.HackerNewsAlert do
 
   @app_name :hacker_news_alert
 
-  def run(_) do
+  def run([time_zone_arg]) do
     {:ok, _} = Application.ensure_all_started(@app_name)
     news_items = HackerNews.fetch_top_news()
 
-    Path.join([
-      :code.priv_dir(@app_name),
-      "static",
-      "subscribers.txt"
-    ])
+    subscribers_file_path()
     |> File.stream!()
-    |> Stream.each(fn row ->
-      [name, email] = String.split(row, ",")
+    |> Stream.each(fn
+      "\n" ->
+        :skip
+
+      "#" <> _ ->
+        :skip
 
-      {:ok, _} =
-        HackerNews.send_top_news_alert(
+      row ->
+        [name, email, time_zone] = String.split(row, ",")
+        name = String.trim(name)
+        email = String.trim(email)
+        time_zone = String.trim(time_zone)
+
+        send_alert(
+          Mix.env(),
           name,
-          String.trim(email),
+          email,
+          time_zone,
+          time_zone_arg,
           news_items
         )
+
+        :ok
     end)
     |> Stream.run()
 
     IO.puts("Emails have been sent successfully.")
   end
+
+  defp send_alert(:prod, name, email, time_zone, input_time_zone, news_items)
+       when input_time_zone == time_zone do
+    {:ok, _} =
+      HackerNews.send_top_news_alert(
+        name,
+        String.trim(email),
+        news_items
+      )
+  end
+
+  defp send_alert(env, _name, email, time_zone, input_time_zone, _news_items)
+       when input_time_zone == time_zone do
+    IO.puts("Mock sending email to #{email} in #{time_zone} time_zone in #{env} env.")
+  end
+
+  defp send_alert(_env, _name, _email, _time_zone, _input_time_zone, _news_items), do: :ok
+
+  defp subscribers_file_path do
+    file_name =
+      if Mix.env() == :prod do
+        "subscribers.txt"
+      else
+        "test_subscribers.txt"
+      end
+
+    Path.join([
+      :code.priv_dir(@app_name),
+      "static",
+      file_name
+    ])
+  end
 end

priv/static/subscribers.txt

@@ -1,6 +1,9 @@
-Vasu Adari,vasuakeel@gmail.com
-Shubham Gupta,shubhamgblr@gmail.com
-Bhupendra Singh,bhupendra.nitt@gmail.com
-Nitin Misra,nitin.misra23@gmail.com
-Prateek Gupta, prateek@nearprotocol.com
-Srihari K, srih4ri+hnalert@gmail.com
+# Indian time zone
+Vasu Adari, vasuakeel@gmail.com, +5:30
+Bhupendra Singh, bhupendra.nitt@gmail.com, +5:30
+Nitin Misra, nitin.misra23@gmail.com, +5:30
+Prateek Gupta,  prateek@nearprotocol.com, +5:30
+Srihari K, srih4ri+hnalert@gmail.com, +5:30
+
+# Singapore time zone
+Shubham Gupta, shubhamgblr@gmail.com, +8:00

priv/static/test_subscribers.txt

@@ -0,0 +1,5 @@
+# Indian time zone
+Vasu Adari, vasuakeel@gmail.com, +5:30
+
+# Singapore time zone
+Vasu Adari, vasuakeel@gmail.com, +8:00