backend

backend/config/config.exs

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+# This file is responsible for configuring your application
+# and its dependencies with the aid of the Config module.
+#
+# This configuration file is loaded before any dependency and
+# is restricted to this project.
+
+# General application configuration
+import Config
+
+config :backend,
+  generators: [timestamp_type: :utc_datetime]
+
+# Configure the endpoint
+config :backend, BackendWeb.Endpoint,
+  url: [host: "localhost"],
+  adapter: Bandit.PhoenixAdapter,
+  render_errors: [
+    formats: [json: BackendWeb.ErrorJSON],
+    layout: false
+  ],
+  pubsub_server: Backend.PubSub,
+  live_view: [signing_salt: "E+VIFYOy"]
+
+# Configure the mailer
+#
+# By default it uses the "Local" adapter which stores the emails
+# locally. You can see the emails in your browser, at "/dev/mailbox".
+#
+# For production it's recommended to configure a different adapter
+# at the `config/runtime.exs`.
+config :backend, Backend.Mailer, adapter: Swoosh.Adapters.Local
+
+# Configure Elixir's Logger
+config :logger, :default_formatter,
+  format: "$time $metadata[$level] $message\n",
+  metadata: [:request_id]
+
+# Use Jason for JSON parsing in Phoenix
+config :phoenix, :json_library, Jason
+
+# Import environment specific config. This must remain at the bottom
+# of this file so it overrides the configuration defined above.
+import_config "#{config_env()}.exs"

backend/config/dev.exs

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+import Config
+
+# For development, we disable any cache and enable
+# debugging and code reloading.
+#
+# The watchers configuration can be used to run external
+# watchers to your application. For example, we can use it
+# to bundle .js and .css sources.
+config :backend, BackendWeb.Endpoint,
+  # Binding to all interfaces to allow access from other containers
+  http: [ip: {0, 0, 0, 0}, port: 4000],
+  check_origin: false,
+  code_reloader: true,
+  debug_errors: true,
+  secret_key_base: "Obmkur6EwKlnJYJ98U+3LvnaqroiK5RYYyKFbCjhBZyu1HDjahzvzySHaOsiU7QX",
+  watchers: []
+
+# ## SSL Support
+#
+# In order to use HTTPS in development, a self-signed
+# certificate can be generated by running the following
+# Mix task:
+#
+#     mix phx.gen.cert
+#
+# Run `mix help phx.gen.cert` for more information.
+#
+# The `http:` config above can be replaced with:
+#
+#     https: [
+#       port: 4001,
+#       cipher_suite: :strong,
+#       keyfile: "priv/cert/selfsigned_key.pem",
+#       certfile: "priv/cert/selfsigned.pem"
+#     ],
+#
+# If desired, both `http:` and `https:` keys can be
+# configured to run both http and https servers on
+# different ports.
+
+# Enable dev routes for dashboard and mailbox
+config :backend, dev_routes: true
+
+# OpenTelemetry configuration
+config :opentelemetry,
+  resource: [
+    service: [
+      name: "backend",
+      namespace: "websocket_game"
+    ]
+  ]
+
+config :opentelemetry_exporter,
+  otlp_protocol: :http_protobuf,
+  otlp_endpoint: System.get_env("OTEL_EXPORTER_OTLP_ENDPOINT", "http://localhost:4318")
+
+# Do not include metadata nor timestamps in development logs
+config :logger, :default_formatter, format: "[$level] $message\n"
+
+# Set a higher stacktrace during development. Avoid configuring such
+# in production as building large stacktraces may be expensive.
+config :phoenix, :stacktrace_depth, 20
+
+# Initialize plugs at runtime for faster development compilation
+config :phoenix, :plug_init_mode, :runtime
+
+# Disable swoosh api client as it is only required for production adapters.
+config :swoosh, :api_client, false

backend/config/prod.exs

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+import Config
+
+# Force using SSL in production. This also sets the "strict-security-transport" header,
+# known as HSTS. If you have a health check endpoint, you may want to exclude it below.
+# Note `:force_ssl` is required to be set at compile-time.
+config :backend, BackendWeb.Endpoint,
+  force_ssl: [rewrite_on: [:x_forwarded_proto]],
+  exclude: [
+    # paths: ["/health"],
+    hosts: ["localhost", "127.0.0.1"]
+  ]
+
+# Configure Swoosh API Client
+config :swoosh, api_client: Swoosh.ApiClient.Req
+
+# Disable Swoosh Local Memory Storage
+config :swoosh, local: false
+
+# Do not print debug messages in production
+config :logger, level: :info
+
+# Runtime production configuration, including reading
+# of environment variables, is done on config/runtime.exs.

backend/config/releases.exs

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+import Config
+
+# Configure the release
+config :backend, Backend.Repo,
+  # Will be overridden in runtime.exs
+  pool_size: String.to_integer(System.get_env("POOL_SIZE") || "10")

backend/config/runtime.exs

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+import Config
+
+# config/runtime.exs is executed for all environments, including
+# during releases. It is executed after compilation and before the
+# system starts, so it is typically used to load production configuration
+# and secrets from environment variables or elsewhere. Do not define
+# any compile-time configuration in here, as it won't be applied.
+# The block below contains prod specific runtime configuration.
+
+# ## Using releases
+#
+# If you use `mix release`, you need to explicitly enable the server
+# by passing the PHX_SERVER=true when you start it:
+#
+#     PHX_SERVER=true bin/backend start
+#
+# Alternatively, you can use `mix phx.gen.release` to generate a `bin/server`
+# script that automatically sets the env var above.
+if System.get_env("PHX_SERVER") do
+  config :backend, BackendWeb.Endpoint, server: true
+end
+
+config :backend, BackendWeb.Endpoint,
+  http: [port: String.to_integer(System.get_env("PORT", "4000"))]
+
+if config_env() == :prod do
+  # The secret key base is used to sign/encrypt cookies and other secrets.
+  # A default value is used in config/dev.exs and config/test.exs but you
+  # want to use a different value for prod and you most likely don't want
+  # to check this value into version control, so we use an environment
+  # variable instead.
+  secret_key_base =
+    System.get_env("SECRET_KEY_BASE") ||
+      raise """
+      environment variable SECRET_KEY_BASE is missing.
+      You can generate one by calling: mix phx.gen.secret
+      """
+
+  host = System.get_env("PHX_HOST") || "example.com"
+
+  config :backend, :dns_cluster_query, System.get_env("DNS_CLUSTER_QUERY")
+
+  config :backend, BackendWeb.Endpoint,
+    url: [host: host, port: 443, scheme: "https"],
+    http: [
+      # Enable IPv6 and bind on all interfaces.
+      # Set it to  {0, 0, 0, 0, 0, 0, 0, 1} for local network only access.
+      # See the documentation on https://hexdocs.pm/bandit/Bandit.html#t:options/0
+      # for details about using IPv6 vs IPv4 and loopback vs public addresses.
+      ip: {0, 0, 0, 0, 0, 0, 0, 0}
+    ],
+    secret_key_base: secret_key_base
+
+  # ## SSL Support
+  #
+  # To get SSL working, you will need to add the `https` key
+  # to your endpoint configuration:
+  #
+  #     config :backend, BackendWeb.Endpoint,
+  #       https: [
+  #         ...,
+  #         port: 443,
+  #         cipher_suite: :strong,
+  #         keyfile: System.get_env("SOME_APP_SSL_KEY_PATH"),
+  #         certfile: System.get_env("SOME_APP_SSL_CERT_PATH")
+  #       ]
+  #
+  # The `cipher_suite` is set to `:strong` to support only the
+  # latest and more secure SSL ciphers. This means old browsers
+  # and clients may not be supported. You can set it to
+  # `:compatible` for wider support.
+  #
+  # `:keyfile` and `:certfile` expect an absolute path to the key
+  # and cert in disk or a relative path inside priv, for example
+  # "priv/ssl/server.key". For all supported SSL configuration
+  # options, see https://hexdocs.pm/plug/Plug.SSL.html#configure/1
+  #
+  # We also recommend setting `force_ssl` in your config/prod.exs,
+  # ensuring no data is ever sent via http, always redirecting to https:
+  #
+  #     config :backend, BackendWeb.Endpoint,
+  #       force_ssl: [hsts: true]
+  #
+  # Check `Plug.SSL` for all available options in `force_ssl`.
+
+  # ## Configuring the mailer
+  #
+  # In production you need to configure the mailer to use a different adapter.
+  # Here is an example configuration for Mailgun:
+  #
+  #     config :backend, Backend.Mailer,
+  #       adapter: Swoosh.Adapters.Mailgun,
+  #       api_key: System.get_env("MAILGUN_API_KEY"),
+  #       domain: System.get_env("MAILGUN_DOMAIN")
+  #
+  # Most non-SMTP adapters require an API client. Swoosh supports Req, Hackney,
+  # and Finch out-of-the-box. This configuration is typically done at
+  # compile-time in your config/prod.exs:
+  #
+  #     config :swoosh, :api_client, Swoosh.ApiClient.Req
+  #
+  # See https://hexdocs.pm/swoosh/Swoosh.html#module-installation for details.
+end

backend/config/test.exs

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+import Config
+
+# We don't run a server during test. If one is required,
+# you can enable the server option below.
+config :backend, BackendWeb.Endpoint,
+  http: [ip: {127, 0, 0, 1}, port: 4002],
+  secret_key_base: "K4i8bHJci8dPJ6LuZHJo147F1h8Wq+SaK4trNGLxJ1cRGkZPZvvm1zk5wWEYY+o2",
+  server: false
+
+# In test we don't send emails
+config :backend, Backend.Mailer, adapter: Swoosh.Adapters.Test
+
+# Disable swoosh api client as it is only required for production adapters
+config :swoosh, :api_client, false
+
+# Print only warnings and errors during test
+config :logger, level: :warning
+
+# Initialize plugs at runtime for faster test compilation
+config :phoenix, :plug_init_mode, :runtime
+
+# Sort query params output of verified routes for robust url comparisons
+config :phoenix,
+  sort_verified_routes_query_params: true