Init git repo

.formatter.exs

@@ -0,0 +1,5 @@
+[
+  import_deps: [:ecto, :phoenix],
+  inputs: ["*.{ex,exs}", "priv/*/seeds.exs", "{config,lib,test}/**/*.{ex,exs}"],
+  subdirectories: ["priv/*/migrations"]
+]

.gitignore

@@ -0,0 +1,28 @@
+# The directory Mix will write compiled artifacts to.
+/_build/
+
+# If you run "mix test --cover", coverage assets end up here.
+/cover/
+
+# The directory Mix downloads your dependencies sources to.
+/deps/
+
+# Where 3rd-party dependencies like ExDoc output generated docs.
+/doc/
+
+# Ignore .fetch files in case you like to edit your project deps locally.
+/.fetch
+
+# If the VM crashes, it generates a dump, let's ignore it too.
+erl_crash.dump
+
+# Also ignore archive artifacts (built via "mix archive.build").
+*.ez
+
+# Ignore package tarball (built via "mix hex.build").
+matrix_server-*.tar
+
+# Since we are building assets from assets/,
+# we ignore priv/static. You may want to comment
+# this depending on your deployment strategy.
+/priv/static/

README.md

@@ -0,0 +1,19 @@
+# MatrixServer
+
+To start your Phoenix server:
+
+  * Install dependencies with `mix deps.get`
+  * Create and migrate your database with `mix ecto.setup`
+  * Start Phoenix endpoint with `mix phx.server`
+
+Now you can visit [`localhost:4000`](http://localhost:4000) from your browser.
+
+Ready to run in production? Please [check our deployment guides](https://hexdocs.pm/phoenix/deployment.html).
+
+## Learn more
+
+  * Official website: https://www.phoenixframework.org/
+  * Guides: https://hexdocs.pm/phoenix/overview.html
+  * Docs: https://hexdocs.pm/phoenix
+  * Forum: https://elixirforum.com/c/phoenix-forum
+  * Source: https://github.com/phoenixframework/phoenix

config/config.exs

@@ -0,0 +1,31 @@
+# This file is responsible for configuring your application
+# and its dependencies with the aid of the Mix.Config module.
+#
+# This configuration file is loaded before any dependency and
+# is restricted to this project.
+
+# General application configuration
+use Mix.Config
+
+config :matrix_server,
+  ecto_repos: [MatrixServer.Repo]
+
+# Configures the endpoint
+config :matrix_server, MatrixServerWeb.Endpoint,
+  url: [host: "localhost"],
+  secret_key_base: "npI0xfNYxf5FoTIdAoc7er0ZvdCJgQFZQ9LcpUFL6dsPXyQllMv45zaQQoO4ZLu1",
+  render_errors: [view: MatrixServerWeb.ErrorView, accepts: ~w(json), layout: false],
+  pubsub_server: MatrixServer.PubSub,
+  live_view: [signing_salt: "6ymoi3Gx"]
+
+# Configures Elixir's Logger
+config :logger, :console,
+  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 "#{Mix.env()}.exs"

config/dev.exs

@@ -0,0 +1,57 @@
+use Mix.Config
+
+# Configure your database
+config :matrix_server, MatrixServer.Repo,
+  username: "postgres",
+  password: "postgres",
+  database: "matrix_server_dev",
+  hostname: "localhost",
+  show_sensitive_data_on_connection_error: true,
+  pool_size: 10
+
+# 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 use it
+# with webpack to recompile .js and .css sources.
+config :matrix_server, MatrixServerWeb.Endpoint,
+  http: [port: 4000],
+  debug_errors: true,
+  code_reloader: true,
+  check_origin: false,
+  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
+#
+# Note that this task requires Erlang/OTP 20 or later.
+# 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.
+
+# Do not include metadata nor timestamps in development logs
+config :logger, :console, 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

config/prod.exs

@@ -0,0 +1,55 @@
+use Mix.Config
+
+# For production, don't forget to configure the url host
+# to something meaningful, Phoenix uses this information
+# when generating URLs.
+#
+# Note we also include the path to a cache manifest
+# containing the digested version of static files. This
+# manifest is generated by the `mix phx.digest` task,
+# which you should run after static files are built and
+# before starting your production server.
+config :matrix_server, MatrixServerWeb.Endpoint,
+  url: [host: "example.com", port: 80],
+  cache_static_manifest: "priv/static/cache_manifest.json"
+
+# Do not print debug messages in production
+config :logger, level: :info
+
+# ## SSL Support
+#
+# To get SSL working, you will need to add the `https` key
+# to the previous section and set your `:url` port to 443:
+#
+#     config :matrix_server, MatrixServerWeb.Endpoint,
+#       ...
+#       url: [host: "example.com", port: 443],
+#       https: [
+#         port: 443,
+#         cipher_suite: :strong,
+#         keyfile: System.get_env("SOME_APP_SSL_KEY_PATH"),
+#         certfile: System.get_env("SOME_APP_SSL_CERT_PATH"),
+#         transport_options: [socket_opts: [:inet6]]
+#       ]
+#
+# 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 endpoint, ensuring
+# no data is ever sent via http, always redirecting to https:
+#
+#     config :matrix_server, MatrixServerWeb.Endpoint,
+#       force_ssl: [hsts: true]
+#
+# Check `Plug.SSL` for all available options in `force_ssl`.
+
+# Finally import the config/prod.secret.exs which loads secrets
+# and configuration from environment variables.
+import_config "prod.secret.exs"

config/prod.secret.exs

@@ -0,0 +1,41 @@
+# In this file, we load production configuration and secrets
+# from environment variables. You can also hardcode secrets,
+# although such is generally not recommended and you have to
+# remember to add this file to your .gitignore.
+use Mix.Config
+
+database_url =
+  System.get_env("DATABASE_URL") ||
+    raise """
+    environment variable DATABASE_URL is missing.
+    For example: ecto://USER:PASS@HOST/DATABASE
+    """
+
+config :matrix_server, MatrixServer.Repo,
+  # ssl: true,
+  url: database_url,
+  pool_size: String.to_integer(System.get_env("POOL_SIZE") || "10")
+
+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
+    """
+
+config :matrix_server, MatrixServerWeb.Endpoint,
+  http: [
+    port: String.to_integer(System.get_env("PORT") || "4000"),
+    transport_options: [socket_opts: [:inet6]]
+  ],
+  secret_key_base: secret_key_base
+
+# ## Using releases (Elixir v1.9+)
+#
+# If you are doing OTP releases, you need to instruct Phoenix
+# to start each relevant endpoint:
+#
+#     config :matrix_server, MatrixServerWeb.Endpoint, server: true
+#
+# Then you can assemble a release by calling `mix release`.
+# See `mix help release` for more information.

config/test.exs

@@ -0,0 +1,22 @@
+use Mix.Config
+
+# Configure your database
+#
+# The MIX_TEST_PARTITION environment variable can be used
+# to provide built-in test partitioning in CI environment.
+# Run `mix help test` for more information.
+config :matrix_server, MatrixServer.Repo,
+  username: "postgres",
+  password: "postgres",
+  database: "matrix_server_test#{System.get_env("MIX_TEST_PARTITION")}",
+  hostname: "localhost",
+  pool: Ecto.Adapters.SQL.Sandbox
+
+# We don't run a server during test. If one is required,
+# you can enable the server option below.
+config :matrix_server, MatrixServerWeb.Endpoint,
+  http: [port: 4002],
+  server: false
+
+# Print only warnings and errors during test
+config :logger, level: :warn

lib/matrix_server.ex

@@ -0,0 +1,9 @@
+defmodule MatrixServer do
+  @moduledoc """
+  MatrixServer keeps the contexts that define your domain
+  and business logic.
+
+  Contexts are also responsible for managing your data, regardless
+  if it comes from the database, an external API or others.
+  """
+end

lib/matrix_server/application.ex

@@ -0,0 +1,34 @@
+defmodule MatrixServer.Application do
+  # See https://hexdocs.pm/elixir/Application.html
+  # for more information on OTP Applications
+  @moduledoc false
+
+  use Application
+
+  def start(_type, _args) do
+    children = [
+      # Start the Ecto repository
+      MatrixServer.Repo,
+      # Start the Telemetry supervisor
+      MatrixServerWeb.Telemetry,
+      # Start the PubSub system
+      {Phoenix.PubSub, name: MatrixServer.PubSub},
+      # Start the Endpoint (http/https)
+      MatrixServerWeb.Endpoint
+      # Start a worker by calling: MatrixServer.Worker.start_link(arg)
+      # {MatrixServer.Worker, arg}
+    ]
+
+    # See https://hexdocs.pm/elixir/Supervisor.html
+    # for other strategies and supported options
+    opts = [strategy: :one_for_one, name: MatrixServer.Supervisor]
+    Supervisor.start_link(children, opts)
+  end
+
+  # Tell Phoenix to update the endpoint configuration
+  # whenever the application is updated.
+  def config_change(changed, _new, removed) do
+    MatrixServerWeb.Endpoint.config_change(changed, removed)
+    :ok
+  end
+end

lib/matrix_server/repo.ex

@@ -0,0 +1,5 @@
+defmodule MatrixServer.Repo do
+  use Ecto.Repo,
+    otp_app: :matrix_server,
+    adapter: Ecto.Adapters.Postgres
+end

lib/matrix_server_web.ex

@@ -0,0 +1,75 @@
+defmodule MatrixServerWeb do
+  @moduledoc """
+  The entrypoint for defining your web interface, such
+  as controllers, views, channels and so on.
+
+  This can be used in your application as:
+
+      use MatrixServerWeb, :controller
+      use MatrixServerWeb, :view
+
+  The definitions below will be executed for every view,
+  controller, etc, so keep them short and clean, focused
+  on imports, uses and aliases.
+
+  Do NOT define functions inside the quoted expressions
+  below. Instead, define any helper function in modules
+  and import those modules here.
+  """
+
+  def controller do
+    quote do
+      use Phoenix.Controller, namespace: MatrixServerWeb
+
+      import Plug.Conn
+      alias MatrixServerWeb.Router.Helpers, as: Routes
+    end
+  end
+
+  def view do
+    quote do
+      use Phoenix.View,
+        root: "lib/matrix_server_web/templates",
+        namespace: MatrixServerWeb
+
+      # Import convenience functions from controllers
+      import Phoenix.Controller,
+        only: [get_flash: 1, get_flash: 2, view_module: 1, view_template: 1]
+
+      # Include shared imports and aliases for views
+      unquote(view_helpers())
+    end
+  end
+
+  def router do
+    quote do
+      use Phoenix.Router
+
+      import Plug.Conn
+      import Phoenix.Controller
+    end
+  end
+
+  def channel do
+    quote do
+      use Phoenix.Channel
+    end
+  end
+
+  defp view_helpers do
+    quote do
+      # Import basic rendering functionality (render, render_layout, etc)
+      import Phoenix.View
+
+      import MatrixServerWeb.ErrorHelpers
+      alias MatrixServerWeb.Router.Helpers, as: Routes
+    end
+  end
+
+  @doc """
+  When used, dispatch to the appropriate controller/view/etc.
+  """
+  defmacro __using__(which) when is_atom(which) do
+    apply(__MODULE__, which, [])
+  end
+end

lib/matrix_server_web/channels/user_socket.ex

@@ -0,0 +1,35 @@
+defmodule MatrixServerWeb.UserSocket do
+  use Phoenix.Socket
+
+  ## Channels
+  # channel "room:*", MatrixServerWeb.RoomChannel
+
+  # Socket params are passed from the client and can
+  # be used to verify and authenticate a user. After
+  # verification, you can put default assigns into
+  # the socket that will be set for all channels, ie
+  #
+  #     {:ok, assign(socket, :user_id, verified_user_id)}
+  #
+  # To deny connection, return `:error`.
+  #
+  # See `Phoenix.Token` documentation for examples in
+  # performing token verification on connect.
+  @impl true
+  def connect(_params, socket, _connect_info) do
+    {:ok, socket}
+  end
+
+  # Socket id's are topics that allow you to identify all sockets for a given user:
+  #
+  #     def id(socket), do: "user_socket:#{socket.assigns.user_id}"
+  #
+  # Would allow you to broadcast a "disconnect" event and terminate
+  # all active sockets and channels for a given user:
+  #
+  #     MatrixServerWeb.Endpoint.broadcast("user_socket:#{user.id}", "disconnect", %{})
+  #
+  # Returning `nil` makes this socket anonymous.
+  @impl true
+  def id(_socket), do: nil
+end

lib/matrix_server_web/endpoint.ex

@@ -0,0 +1,46 @@
+defmodule MatrixServerWeb.Endpoint do
+  use Phoenix.Endpoint, otp_app: :matrix_server
+
+  # The session will be stored in the cookie and signed,
+  # this means its contents can be read but not tampered with.
+  # Set :encryption_salt if you would also like to encrypt it.
+  @session_options [
+    store: :cookie,
+    key: "_matrix_server_key",
+    signing_salt: "IGPHtnAo"
+  ]
+
+  socket "/socket", MatrixServerWeb.UserSocket,
+    websocket: true,
+    longpoll: false
+
+  # Serve at "/" the static files from "priv/static" directory.
+  #
+  # You should set gzip to true if you are running phx.digest
+  # when deploying your static files in production.
+  plug Plug.Static,
+    at: "/",
+    from: :matrix_server,
+    gzip: false,
+    only: ~w(css fonts images js favicon.ico robots.txt)
+
+  # Code reloading can be explicitly enabled under the
+  # :code_reloader configuration of your endpoint.
+  if code_reloading? do
+    plug Phoenix.CodeReloader
+    plug Phoenix.Ecto.CheckRepoStatus, otp_app: :matrix_server
+  end
+
+  plug Plug.RequestId
+  plug Plug.Telemetry, event_prefix: [:phoenix, :endpoint]
+
+  plug Plug.Parsers,
+    parsers: [:urlencoded, :multipart, :json],
+    pass: ["*/*"],
+    json_decoder: Phoenix.json_library()
+
+  plug Plug.MethodOverride
+  plug Plug.Head
+  plug Plug.Session, @session_options
+  plug MatrixServerWeb.Router
+end

lib/matrix_server_web/router.ex

@@ -0,0 +1,11 @@
+defmodule MatrixServerWeb.Router do
+  use MatrixServerWeb, :router
+
+  pipeline :api do
+    plug :accepts, ["json"]
+  end
+
+  scope "/api", MatrixServerWeb do
+    pipe_through :api
+  end
+end

lib/matrix_server_web/telemetry.ex

@@ -0,0 +1,55 @@
+defmodule MatrixServerWeb.Telemetry do
+  use Supervisor
+  import Telemetry.Metrics
+
+  def start_link(arg) do
+    Supervisor.start_link(__MODULE__, arg, name: __MODULE__)
+  end
+
+  @impl true
+  def init(_arg) do
+    children = [
+      # Telemetry poller will execute the given period measurements
+      # every 10_000ms. Learn more here: https://hexdocs.pm/telemetry_metrics
+      {:telemetry_poller, measurements: periodic_measurements(), period: 10_000}
+      # Add reporters as children of your supervision tree.
+      # {Telemetry.Metrics.ConsoleReporter, metrics: metrics()}
+    ]
+
+    Supervisor.init(children, strategy: :one_for_one)
+  end
+
+  def metrics do
+    [
+      # Phoenix Metrics
+      summary("phoenix.endpoint.stop.duration",
+        unit: {:native, :millisecond}
+      ),
+      summary("phoenix.router_dispatch.stop.duration",
+        tags: [:route],
+        unit: {:native, :millisecond}
+      ),
+
+      # Database Metrics
+      summary("matrix_server.repo.query.total_time", unit: {:native, :millisecond}),
+      summary("matrix_server.repo.query.decode_time", unit: {:native, :millisecond}),
+      summary("matrix_server.repo.query.query_time", unit: {:native, :millisecond}),
+      summary("matrix_server.repo.query.queue_time", unit: {:native, :millisecond}),
+      summary("matrix_server.repo.query.idle_time", unit: {:native, :millisecond}),
+
+      # VM Metrics
+      summary("vm.memory.total", unit: {:byte, :kilobyte}),
+      summary("vm.total_run_queue_lengths.total"),
+      summary("vm.total_run_queue_lengths.cpu"),
+      summary("vm.total_run_queue_lengths.io")
+    ]
+  end
+
+  defp periodic_measurements do
+    [
+      # A module, function and arguments to be invoked periodically.
+      # This function must call :telemetry.execute/3 and a metric must be added above.
+      # {MatrixServerWeb, :count_users, []}
+    ]
+  end
+end

lib/matrix_server_web/views/error_helpers.ex

@@ -0,0 +1,16 @@
+defmodule MatrixServerWeb.ErrorHelpers do
+  @moduledoc """
+  Conveniences for translating and building error messages.
+  """
+
+  @doc """
+  Translates an error message.
+  """
+  def translate_error({msg, opts}) do
+    # Because the error messages we show in our forms and APIs
+    # are defined inside Ecto, we need to translate them dynamically.
+    Enum.reduce(opts, msg, fn {key, value}, acc ->
+      String.replace(acc, "%{#{key}}", to_string(value))
+    end)
+  end
+end

lib/matrix_server_web/views/error_view.ex

@@ -0,0 +1,16 @@
+defmodule MatrixServerWeb.ErrorView do
+  use MatrixServerWeb, :view
+
+  # If you want to customize a particular status code
+  # for a certain format, you may uncomment below.
+  # def render("500.json", _assigns) do
+  #   %{errors: %{detail: "Internal Server Error"}}
+  # end
+
+  # By default, Phoenix returns the status message from
+  # the template name. For example, "404.json" becomes
+  # "Not Found".
+  def template_not_found(template, _assigns) do
+    %{errors: %{detail: Phoenix.Controller.status_message_from_template(template)}}
+  end
+end

mix.exs

@@ -0,0 +1,61 @@
+defmodule MatrixServer.MixProject do
+  use Mix.Project
+
+  def project do
+    [
+      app: :matrix_server,
+      version: "0.1.0",
+      elixir: "~> 1.7",
+      elixirc_paths: elixirc_paths(Mix.env()),
+      compilers: [:phoenix] ++ Mix.compilers(),
+      start_permanent: Mix.env() == :prod,
+      aliases: aliases(),
+      deps: deps()
+    ]
+  end
+
+  # Configuration for the OTP application.
+  #
+  # Type `mix help compile.app` for more information.
+  def application do
+    [
+      mod: {MatrixServer.Application, []},
+      extra_applications: [:logger, :runtime_tools]
+    ]
+  end
+
+  # Specifies which paths to compile per environment.
+  defp elixirc_paths(:test), do: ["lib", "test/support"]
+  defp elixirc_paths(_), do: ["lib"]
+
+  # Specifies your project dependencies.
+  #
+  # Type `mix help deps` for examples and options.
+  defp deps do
+    [
+      {:phoenix, "~> 1.5.9"},
+      {:phoenix_ecto, "~> 4.1"},
+      {:ecto_sql, "~> 3.4"},
+      {:postgrex, ">= 0.0.0"},
+      {:telemetry_metrics, "~> 0.4"},
+      {:telemetry_poller, "~> 0.4"},
+      {:jason, "~> 1.0"},
+      {:plug_cowboy, "~> 2.0"}
+    ]
+  end
+
+  # Aliases are shortcuts or tasks specific to the current project.
+  # For example, to install project dependencies and perform other setup tasks, run:
+  #
+  #     $ mix setup
+  #
+  # See the documentation for `Mix` for more info on aliases.
+  defp aliases do
+    [
+      setup: ["deps.get", "ecto.setup"],
+      "ecto.setup": ["ecto.create", "ecto.migrate", "run priv/repo/seeds.exs"],
+      "ecto.reset": ["ecto.drop", "ecto.setup"],
+      test: ["ecto.create --quiet", "ecto.migrate --quiet", "test"]
+    ]
+  end
+end

mix.lock

@@ -0,0 +1,23 @@
+%{
+  "connection": {:hex, :connection, "1.1.0", "ff2a49c4b75b6fb3e674bfc5536451607270aac754ffd1bdfe175abe4a6d7a68", [:mix], [], "hexpm", "722c1eb0a418fbe91ba7bd59a47e28008a189d47e37e0e7bb85585a016b2869c"},
+  "cowboy": {:hex, :cowboy, "2.9.0", "865dd8b6607e14cf03282e10e934023a1bd8be6f6bacf921a7e2a96d800cd452", [:make, :rebar3], [{:cowlib, "2.11.0", [hex: :cowlib, repo: "hexpm", optional: false]}, {:ranch, "1.8.0", [hex: :ranch, repo: "hexpm", optional: false]}], "hexpm", "2c729f934b4e1aa149aff882f57c6372c15399a20d54f65c8d67bef583021bde"},
+  "cowboy_telemetry": {:hex, :cowboy_telemetry, "0.3.1", "ebd1a1d7aff97f27c66654e78ece187abdc646992714164380d8a041eda16754", [:rebar3], [{:cowboy, "~> 2.7", [hex: :cowboy, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "3a6efd3366130eab84ca372cbd4a7d3c3a97bdfcfb4911233b035d117063f0af"},
+  "cowlib": {:hex, :cowlib, "2.11.0", "0b9ff9c346629256c42ebe1eeb769a83c6cb771a6ee5960bd110ab0b9b872063", [:make, :rebar3], [], "hexpm", "2b3e9da0b21c4565751a6d4901c20d1b4cc25cbb7fd50d91d2ab6dd287bc86a9"},
+  "db_connection": {:hex, :db_connection, "2.4.0", "d04b1b73795dae60cead94189f1b8a51cc9e1f911c234cc23074017c43c031e5", [:mix], [{:connection, "~> 1.0", [hex: :connection, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "ad416c21ad9f61b3103d254a71b63696ecadb6a917b36f563921e0de00d7d7c8"},
+  "decimal": {:hex, :decimal, "2.0.0", "a78296e617b0f5dd4c6caf57c714431347912ffb1d0842e998e9792b5642d697", [:mix], [], "hexpm", "34666e9c55dea81013e77d9d87370fe6cb6291d1ef32f46a1600230b1d44f577"},
+  "ecto": {:hex, :ecto, "3.6.2", "efdf52acfc4ce29249bab5417415bd50abd62db7b0603b8bab0d7b996548c2bc", [:mix], [{:decimal, "~> 1.6 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "efad6dfb04e6f986b8a3047822b0f826d9affe8e4ebdd2aeedbfcb14fd48884e"},
+  "ecto_sql": {:hex, :ecto_sql, "3.6.2", "9526b5f691701a5181427634c30655ac33d11e17e4069eff3ae1176c764e0ba3", [:mix], [{:db_connection, "~> 2.2", [hex: :db_connection, repo: "hexpm", optional: false]}, {:ecto, "~> 3.6.2", [hex: :ecto, repo: "hexpm", optional: false]}, {:myxql, "~> 0.4.0 or ~> 0.5.0", [hex: :myxql, repo: "hexpm", optional: true]}, {:postgrex, "~> 0.15.0 or ~> 1.0", [hex: :postgrex, repo: "hexpm", optional: true]}, {:tds, "~> 2.1.1", [hex: :tds, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "5ec9d7e6f742ea39b63aceaea9ac1d1773d574ea40df5a53ef8afbd9242fdb6b"},
+  "jason": {:hex, :jason, "1.2.2", "ba43e3f2709fd1aa1dce90aaabfd039d000469c05c56f0b8e31978e03fa39052", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "18a228f5f0058ee183f29f9eae0805c6e59d61c3b006760668d8d18ff0d12179"},
+  "mime": {:hex, :mime, "1.6.0", "dabde576a497cef4bbdd60aceee8160e02a6c89250d6c0b29e56c0dfb00db3d2", [:mix], [], "hexpm", "31a1a8613f8321143dde1dafc36006a17d28d02bdfecb9e95a880fa7aabd19a7"},
+  "phoenix": {:hex, :phoenix, "1.5.9", "a6368d36cfd59d917b37c44386e01315bc89f7609a10a45a22f47c007edf2597", [:mix], [{:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:phoenix_html, "~> 2.13 or ~> 3.0", [hex: :phoenix_html, repo: "hexpm", optional: true]}, {:phoenix_pubsub, "~> 2.0", [hex: :phoenix_pubsub, repo: "hexpm", optional: false]}, {:plug, "~> 1.10", [hex: :plug, repo: "hexpm", optional: false]}, {:plug_cowboy, "~> 1.0 or ~> 2.2", [hex: :plug_cowboy, repo: "hexpm", optional: true]}, {:plug_crypto, "~> 1.1.2 or ~> 1.2", [hex: :plug_crypto, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "7e4bce20a67c012f1fbb0af90e5da49fa7bf0d34e3a067795703b74aef75427d"},
+  "phoenix_ecto": {:hex, :phoenix_ecto, "4.3.0", "2c69a452c2e0ee8c93345ae1cdc1696ef4877ff9cbb15c305def41960c3c4ebf", [:mix], [{:ecto, "~> 3.0", [hex: :ecto, repo: "hexpm", optional: false]}, {:phoenix_html, "~> 2.14.2 or ~> 3.0", [hex: :phoenix_html, repo: "hexpm", optional: true]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "0ac491924217550c8f42c81c1f390b5d81517d12ceaf9abf3e701156760a848e"},
+  "phoenix_pubsub": {:hex, :phoenix_pubsub, "2.0.0", "a1ae76717bb168cdeb10ec9d92d1480fec99e3080f011402c0a2d68d47395ffb", [:mix], [], "hexpm", "c52d948c4f261577b9c6fa804be91884b381a7f8f18450c5045975435350f771"},
+  "plug": {:hex, :plug, "1.11.1", "f2992bac66fdae679453c9e86134a4201f6f43a687d8ff1cd1b2862d53c80259", [:mix], [{:mime, "~> 1.0", [hex: :mime, repo: "hexpm", optional: false]}, {:plug_crypto, "~> 1.1.1 or ~> 1.2", [hex: :plug_crypto, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "23524e4fefbb587c11f0833b3910bfb414bf2e2534d61928e920f54e3a1b881f"},
+  "plug_cowboy": {:hex, :plug_cowboy, "2.5.0", "51c998f788c4e68fc9f947a5eba8c215fbb1d63a520f7604134cab0270ea6513", [:mix], [{:cowboy, "~> 2.7", [hex: :cowboy, repo: "hexpm", optional: false]}, {:cowboy_telemetry, "~> 0.3", [hex: :cowboy_telemetry, repo: "hexpm", optional: false]}, {:plug, "~> 1.7", [hex: :plug, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "5b2c8925a5e2587446f33810a58c01e66b3c345652eeec809b76ba007acde71a"},
+  "plug_crypto": {:hex, :plug_crypto, "1.2.2", "05654514ac717ff3a1843204b424477d9e60c143406aa94daf2274fdd280794d", [:mix], [], "hexpm", "87631c7ad914a5a445f0a3809f99b079113ae4ed4b867348dd9eec288cecb6db"},
+  "postgrex": {:hex, :postgrex, "0.15.9", "46f8fe6f25711aeb861c4d0ae09780facfdf3adbd2fb5594ead61504dd489bda", [:mix], [{:connection, "~> 1.0", [hex: :connection, repo: "hexpm", optional: false]}, {:db_connection, "~> 2.1", [hex: :db_connection, repo: "hexpm", optional: false]}, {:decimal, "~> 1.5 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm", "610719103e4cb2223d4ab78f9f0f3e720320eeca6011415ab4137ddef730adee"},
+  "ranch": {:hex, :ranch, "1.8.0", "8c7a100a139fd57f17327b6413e4167ac559fbc04ca7448e9be9057311597a1d", [:make, :rebar3], [], "hexpm", "49fbcfd3682fab1f5d109351b61257676da1a2fdbe295904176d5e521a2ddfe5"},
+  "telemetry": {:hex, :telemetry, "0.4.3", "a06428a514bdbc63293cd9a6263aad00ddeb66f608163bdec7c8995784080818", [:rebar3], [], "hexpm", "eb72b8365ffda5bed68a620d1da88525e326cb82a75ee61354fc24b844768041"},
+  "telemetry_metrics": {:hex, :telemetry_metrics, "0.6.0", "da9d49ee7e6bb1c259d36ce6539cd45ae14d81247a2b0c90edf55e2b50507f7b", [:mix], [{:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "5cfe67ad464b243835512aa44321cee91faed6ea868d7fb761d7016e02915c3d"},
+  "telemetry_poller": {:hex, :telemetry_poller, "0.5.1", "21071cc2e536810bac5628b935521ff3e28f0303e770951158c73eaaa01e962a", [:rebar3], [{:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "4cab72069210bc6e7a080cec9afffad1b33370149ed5d379b81c7c5f0c663fd4"},
+}

priv/repo/migrations/.formatter.exs

@@ -0,0 +1,4 @@
+[
+  import_deps: [:ecto_sql],
+  inputs: ["*.exs"]
+]

priv/repo/seeds.exs

@@ -0,0 +1,11 @@
+# Script for populating the database. You can run it as:
+#
+#     mix run priv/repo/seeds.exs
+#
+# Inside the script, you can read and write to any of your
+# repositories directly:
+#
+#     MatrixServer.Repo.insert!(%MatrixServer.SomeSchema{})
+#
+# We recommend using the bang functions (`insert!`, `update!`
+# and so on) as they will fail if something goes wrong.

test/matrix_server_web/views/error_view_test.exs

@@ -0,0 +1,15 @@
+defmodule MatrixServerWeb.ErrorViewTest do
+  use MatrixServerWeb.ConnCase, async: true
+
+  # Bring render/3 and render_to_string/3 for testing custom views
+  import Phoenix.View
+
+  test "renders 404.json" do
+    assert render(MatrixServerWeb.ErrorView, "404.json", []) == %{errors: %{detail: "Not Found"}}
+  end
+
+  test "renders 500.json" do
+    assert render(MatrixServerWeb.ErrorView, "500.json", []) ==
+             %{errors: %{detail: "Internal Server Error"}}
+  end
+end

test/support/channel_case.ex

@@ -0,0 +1,40 @@
+defmodule MatrixServerWeb.ChannelCase do
+  @moduledoc """
+  This module defines the test case to be used by
+  channel tests.
+
+  Such tests rely on `Phoenix.ChannelTest` and also
+  import other functionality to make it easier
+  to build common data structures and query the data layer.
+
+  Finally, if the test case interacts with the database,
+  we enable the SQL sandbox, so changes done to the database
+  are reverted at the end of every test. If you are using
+  PostgreSQL, you can even run database tests asynchronously
+  by setting `use MatrixServerWeb.ChannelCase, async: true`, although
+  this option is not recommended for other databases.
+  """
+
+  use ExUnit.CaseTemplate
+
+  using do
+    quote do
+      # Import conveniences for testing with channels
+      import Phoenix.ChannelTest
+      import MatrixServerWeb.ChannelCase
+
+      # The default endpoint for testing
+      @endpoint MatrixServerWeb.Endpoint
+    end
+  end
+
+  setup tags do
+    :ok = Ecto.Adapters.SQL.Sandbox.checkout(MatrixServer.Repo)
+
+    unless tags[:async] do
+      Ecto.Adapters.SQL.Sandbox.mode(MatrixServer.Repo, {:shared, self()})
+    end
+
+    :ok
+  end
+end

test/support/conn_case.ex

@@ -0,0 +1,43 @@
+defmodule MatrixServerWeb.ConnCase do
+  @moduledoc """
+  This module defines the test case to be used by
+  tests that require setting up a connection.
+
+  Such tests rely on `Phoenix.ConnTest` and also
+  import other functionality to make it easier
+  to build common data structures and query the data layer.
+
+  Finally, if the test case interacts with the database,
+  we enable the SQL sandbox, so changes done to the database
+  are reverted at the end of every test. If you are using
+  PostgreSQL, you can even run database tests asynchronously
+  by setting `use MatrixServerWeb.ConnCase, async: true`, although
+  this option is not recommended for other databases.
+  """
+
+  use ExUnit.CaseTemplate
+
+  using do
+    quote do
+      # Import conveniences for testing with connections
+      import Plug.Conn
+      import Phoenix.ConnTest
+      import MatrixServerWeb.ConnCase
+
+      alias MatrixServerWeb.Router.Helpers, as: Routes
+
+      # The default endpoint for testing
+      @endpoint MatrixServerWeb.Endpoint
+    end
+  end
+
+  setup tags do
+    :ok = Ecto.Adapters.SQL.Sandbox.checkout(MatrixServer.Repo)
+
+    unless tags[:async] do
+      Ecto.Adapters.SQL.Sandbox.mode(MatrixServer.Repo, {:shared, self()})
+    end
+
+    {:ok, conn: Phoenix.ConnTest.build_conn()}
+  end
+end

test/support/data_case.ex

@@ -0,0 +1,55 @@
+defmodule MatrixServer.DataCase do
+  @moduledoc """
+  This module defines the setup for tests requiring
+  access to the application's data layer.
+
+  You may define functions here to be used as helpers in
+  your tests.
+
+  Finally, if the test case interacts with the database,
+  we enable the SQL sandbox, so changes done to the database
+  are reverted at the end of every test. If you are using
+  PostgreSQL, you can even run database tests asynchronously
+  by setting `use MatrixServer.DataCase, async: true`, although
+  this option is not recommended for other databases.
+  """
+
+  use ExUnit.CaseTemplate
+
+  using do
+    quote do
+      alias MatrixServer.Repo
+
+      import Ecto
+      import Ecto.Changeset
+      import Ecto.Query
+      import MatrixServer.DataCase
+    end
+  end
+
+  setup tags do
+    :ok = Ecto.Adapters.SQL.Sandbox.checkout(MatrixServer.Repo)
+
+    unless tags[:async] do
+      Ecto.Adapters.SQL.Sandbox.mode(MatrixServer.Repo, {:shared, self()})
+    end
+
+    :ok
+  end
+
+  @doc """
+  A helper that transforms changeset errors into a map of messages.
+
+      assert {:error, changeset} = Accounts.create_user(%{password: "short"})
+      assert "password is too short" in errors_on(changeset).password
+      assert %{password: ["password is too short"]} = errors_on(changeset)
+
+  """
+  def errors_on(changeset) do
+    Ecto.Changeset.traverse_errors(changeset, fn {message, opts} ->
+      Regex.replace(~r"%{(\w+)}", message, fn _, key ->
+        opts |> Keyword.get(String.to_existing_atom(key), key) |> to_string()
+      end)
+    end)
+  end
+end

test/test_helper.exs

@@ -0,0 +1,2 @@
+ExUnit.start()
+Ecto.Adapters.SQL.Sandbox.mode(MatrixServer.Repo, :manual)