Initial CommitHEADmaster

* Listener Implementation - In-Progress
* Initial API Endpoints and Websocket implementation
  * API End Points Implemented -> /music_changed, /state_change
  * Websocket End Points implemented -> /i_am_listening_to
* Socket Implementation - In-Progress

9 files changed, 149 insertions, 0 deletions

diff --git a/.editorconfig b/.editorconfig
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index 0000000..163eb75
--- /dev/null
+++ b/.editorconfig
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+root = true
+
+[*.cr]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true
diff --git a/.gitignore b/.gitignore
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+++ b/.gitignore
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+/docs/
+/lib/
+/bin/
+/.shards/
+*.dwarf
diff --git a/LICENSE b/LICENSE
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index 0000000..6f1ec5f
--- /dev/null
+++ b/LICENSE
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+MIT License
+
+Copyright (c) 2023 Indrajith K L <indrajith@indrajith.dev>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
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+++ b/README.md
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+# [W]hat [I] [A]m [L]istening [T]o Listener
+
+A Web Server written in Crystal Lang which is part of WIALT Project. This server is a broker server which act as a bridge between Local MPC Music Player and indrajith.dev website. Whose main purpose is to display music title I'am listening to.
+
+## Installation
+
+* Install Crystal
+* `shards install`
+
+## Usage
+
+* `crystal run src/wialt_listener.cr`
+
+## Contributors
+
+- [Indrajith K L](https://github.com/cooljith91112) - creator and maintainer
diff --git a/shard.lock b/shard.lock
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+++ b/shard.lock
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+version: 2.0
+shards:
+  backtracer:
+    git: https://github.com/sija/backtracer.cr.git
+    version: 1.2.2
+
+  exception_page:
+    git: https://github.com/crystal-loot/exception_page.git
+    version: 0.3.1
+
+  kemal:
+    git: https://github.com/kemalcr/kemal.git
+    version: 1.4.0
+
+  radix:
+    git: https://github.com/luislavena/radix.git
+    version: 0.4.1
+
diff --git a/shard.yml b/shard.yml
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+++ b/shard.yml
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+name: wialt_listener
+version: 0.1.0
+
+authors:
+  - Indrajith K L <indrajith@indrajith.dev>
+
+dependencies:
+  kemal:
+    github: kemalcr/kemal
+
+targets:
+  wialt_listener:
+    main: src/wialt_listener.cr
+
+crystal: '>= 1.10.1'
+
+license: MIT
diff --git a/spec/spec_helper.cr b/spec/spec_helper.cr
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--- /dev/null
+++ b/spec/spec_helper.cr
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+require "spec"
+require "../src/wialt_listener"
diff --git a/spec/wialt_listener_spec.cr b/spec/wialt_listener_spec.cr
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+++ b/spec/wialt_listener_spec.cr
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+require "./spec_helper"
+
+describe WialtListener do
+  # TODO: Write tests
+
+  it "works" do
+    false.should eq(true)
+  end
+end
diff --git a/src/wialt_listener.cr b/src/wialt_listener.cr
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+++ b/src/wialt_listener.cr
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+# TODO: Write documentation for `WialtListener`
+require "kemal"
+
+class MusicChange
+  include JSON::Serializable
+
+  property title : String
+end
+
+
+module WialtListener
+  VERSION = "0.1.0"
+  sockets = [] of HTTP::WebSocket
+
+  static_headers do |response|
+    response.headers.add("Access-Control-Allow-Origin", "")
+  end
+
+  post "/music_changed" do |env|
+    response = MusicChange.from_json env.request.body.not_nil!
+    puts "#{response.title}"
+    send_message_to_clients(sockets, response.title)
+    {status: "OK"}
+  end
+
+  post "/state_change" do |env|
+    puts "#{env.request.body}"
+    {status: "OK"}
+  end
+
+  ws "/i_am_listening_to" do |socket|
+    sockets.push socket
+
+    socket.on_message do |message|
+      send_message_to_clients(sockets, message)
+    end
+
+    socket.on_close do |_|
+      sockets.delete(socket)
+      puts "Closing Socket: #{socket}"
+    end
+
+  end
+
+  def self.send_message_to_clients(sockets, title)
+    sockets.each do |a_socket|
+      a_socket.send title
+    end
+  end
+
+  Kemal.run
+end