370 lines
9.3 KiB
Elixir
370 lines
9.3 KiB
Elixir
defmodule Aggiedit.Accounts do
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@moduledoc """
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The Accounts context.
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"""
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import Ecto.Query, warn: false
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alias Aggiedit.Repo
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alias Aggiedit.Rooms
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alias Aggiedit.Accounts.{User, UserToken, UserNotifier}
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## Database getters
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@doc """
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Gets a user by email.
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## Examples
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iex> get_user_by_email("foo@example.com")
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%User{}
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iex> get_user_by_email("unknown@example.com")
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nil
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"""
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def get_user_by_email(email) when is_binary(email) do
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Repo.get_by(User, email: email)
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end
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@doc """
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Gets a user by email and password.
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## Examples
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iex> get_user_by_email_and_password("foo@example.com", "correct_password")
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%User{}
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iex> get_user_by_email_and_password("foo@example.com", "invalid_password")
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nil
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"""
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def get_user_by_email_and_password(email, password)
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when is_binary(email) and is_binary(password) do
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user = Repo.get_by(User, email: email)
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if User.valid_password?(user, password), do: user
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end
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@doc """
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Gets a single user.
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Raises `Ecto.NoResultsError` if the User does not exist.
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## Examples
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iex> get_user!(123)
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%User{}
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iex> get_user!(456)
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** (Ecto.NoResultsError)
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"""
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def get_user!(id), do: Repo.get!(User, id)
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## User registration
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@doc """
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Registers a user.
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## Examples
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iex> register_user(%{field: value})
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{:ok, %User{}}
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iex> register_user(%{field: bad_value})
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{:error, %Ecto.Changeset{}}
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"""
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def register_user(attrs) do
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%User{}
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|> User.registration_changeset(attrs)
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|> Repo.insert()
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end
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@doc """
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Returns an `%Ecto.Changeset{}` for tracking user changes.
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## Examples
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iex> change_user_registration(user)
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%Ecto.Changeset{data: %User{}}
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"""
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def change_user_registration(%User{} = user, attrs \\ %{}) do
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User.registration_changeset(user, attrs, hash_password: false)
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end
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## Settings
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@doc """
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Returns an `%Ecto.Changeset{}` for changing the user email.
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## Examples
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iex> change_user_email(user)
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%Ecto.Changeset{data: %User{}}
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"""
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def change_user_email(user, attrs \\ %{}) do
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User.email_changeset(user, attrs)
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end
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@doc """
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Emulates that the email will change without actually changing
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it in the database.
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## Examples
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iex> apply_user_email(user, "valid password", %{email: ...})
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{:ok, %User{}}
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iex> apply_user_email(user, "invalid password", %{email: ...})
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{:error, %Ecto.Changeset{}}
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"""
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def apply_user_email(user, password, attrs) do
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user
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|> User.email_changeset(attrs)
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|> User.validate_current_password(password)
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|> Ecto.Changeset.apply_action(:update)
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end
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@doc """
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Updates the user email using the given token.
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If the token matches, the user email is updated and the token is deleted.
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The confirmed_at date is also updated to the current time.
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"""
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def update_user_email(user, token) do
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context = "change:#{user.email}"
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with {:ok, query} <- UserToken.verify_change_email_token_query(token, context),
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%UserToken{sent_to: email} <- Repo.one(query),
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{:ok, %{:user => user}} <- Repo.transaction(user_email_multi(user, email, context)),
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{:ok, _user} <- set_user_room(user) do
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:ok
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else
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_ -> :error
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end
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end
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def set_user_room(user) do
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with domain <- Aggiedit.Utils.get_email_domain(user.email),
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{:ok, room} <- Rooms.create_or_find_room_with_domain(domain) do
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user
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|> Repo.preload(:room)
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|> User.room_changeset(room)
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|> Repo.update()
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else
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_ -> {:error, "Could not find or create room with your email"}
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end
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end
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defp user_email_multi(user, email, context) do
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changeset =
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user
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|> User.email_changeset(%{email: email})
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|> User.confirm_changeset()
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Ecto.Multi.new()
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|> Ecto.Multi.update(:user, changeset)
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|> Ecto.Multi.delete_all(:tokens, UserToken.user_and_contexts_query(user, [context]))
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end
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@doc """
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Delivers the update email instructions to the given user.
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## Examples
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iex> deliver_update_email_instructions(user, current_email, &Routes.user_update_email_url(conn, :edit, &1))
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{:ok, %{to: ..., body: ...}}
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"""
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def deliver_update_email_instructions(%User{} = user, current_email, update_email_url_fun)
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when is_function(update_email_url_fun, 1) do
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{encoded_token, user_token} = UserToken.build_email_token(user, "change:#{current_email}")
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Repo.insert!(user_token)
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UserNotifier.deliver_update_email_instructions(user, update_email_url_fun.(encoded_token))
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end
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@doc """
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Returns an `%Ecto.Changeset{}` for changing the user password.
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## Examples
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iex> change_user_password(user)
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%Ecto.Changeset{data: %User{}}
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"""
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def change_user_password(user, attrs \\ %{}) do
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User.password_changeset(user, attrs, hash_password: false)
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end
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@doc """
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Updates the user password.
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## Examples
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iex> update_user_password(user, "valid password", %{password: ...})
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{:ok, %User{}}
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iex> update_user_password(user, "invalid password", %{password: ...})
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{:error, %Ecto.Changeset{}}
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"""
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def update_user_password(user, password, attrs) do
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changeset =
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user
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|> User.password_changeset(attrs)
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|> User.validate_current_password(password)
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Ecto.Multi.new()
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|> Ecto.Multi.update(:user, changeset)
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|> Ecto.Multi.delete_all(:tokens, UserToken.user_and_contexts_query(user, :all))
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|> Repo.transaction()
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|> case do
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{:ok, %{user: user}} -> {:ok, user}
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{:error, :user, changeset, _} -> {:error, changeset}
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end
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end
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## Session
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@doc """
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Generates a session token.
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"""
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def generate_user_session_token(user) do
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{token, user_token} = UserToken.build_session_token(user)
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Repo.insert!(user_token)
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token
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end
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@doc """
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Gets the user with the given signed token.
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"""
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def get_user_by_session_token(token) do
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{:ok, query} = UserToken.verify_session_token_query(token)
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Repo.one(query)
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|> Repo.preload(:room)
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end
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@doc """
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Deletes the signed token with the given context.
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"""
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def delete_session_token(token) do
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Repo.delete_all(UserToken.token_and_context_query(token, "session"))
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:ok
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end
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## Confirmation
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@doc """
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Delivers the confirmation email instructions to the given user.
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## Examples
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iex> deliver_user_confirmation_instructions(user, &Routes.user_confirmation_url(conn, :edit, &1))
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{:ok, %{to: ..., body: ...}}
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iex> deliver_user_confirmation_instructions(confirmed_user, &Routes.user_confirmation_url(conn, :edit, &1))
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{:error, :already_confirmed}
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"""
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def deliver_user_confirmation_instructions(%User{} = user, confirmation_url_fun)
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when is_function(confirmation_url_fun, 1) do
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if user.confirmed_at do
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{:error, :already_confirmed}
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else
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{encoded_token, user_token} = UserToken.build_email_token(user, "confirm")
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Repo.insert!(user_token)
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UserNotifier.deliver_confirmation_instructions(user, confirmation_url_fun.(encoded_token))
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end
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end
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@doc """
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Confirms a user by the given token.
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If the token matches, the user account is marked as confirmed
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and the token is deleted.
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"""
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def confirm_user(token) do
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with {:ok, query} <- UserToken.verify_email_token_query(token, "confirm"),
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%User{} = user <- Repo.one(query),
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{:ok, %{user: user}} <- Repo.transaction(confirm_user_multi(user)),
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{:ok, user} <- set_user_room(user) do
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{:ok, user}
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else
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_ -> :error
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end
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end
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defp confirm_user_multi(user) do
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Ecto.Multi.new()
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|> Ecto.Multi.update(:user, User.confirm_changeset(user))
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|> Ecto.Multi.delete_all(:tokens, UserToken.user_and_contexts_query(user, ["confirm"]))
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end
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## Reset password
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@doc """
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Delivers the reset password email to the given user.
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## Examples
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iex> deliver_user_reset_password_instructions(user, &Routes.user_reset_password_url(conn, :edit, &1))
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{:ok, %{to: ..., body: ...}}
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"""
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def deliver_user_reset_password_instructions(%User{} = user, reset_password_url_fun)
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when is_function(reset_password_url_fun, 1) do
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{encoded_token, user_token} = UserToken.build_email_token(user, "reset_password")
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Repo.insert!(user_token)
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UserNotifier.deliver_reset_password_instructions(user, reset_password_url_fun.(encoded_token))
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end
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@doc """
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Gets the user by reset password token.
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## Examples
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iex> get_user_by_reset_password_token("validtoken")
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%User{}
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iex> get_user_by_reset_password_token("invalidtoken")
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nil
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"""
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def get_user_by_reset_password_token(token) do
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with {:ok, query} <- UserToken.verify_email_token_query(token, "reset_password"),
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%User{} = user <- Repo.one(query) do
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user
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else
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_ -> nil
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end
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end
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@doc """
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Resets the user password.
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## Examples
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iex> reset_user_password(user, %{password: "new long password", password_confirmation: "new long password"})
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{:ok, %User{}}
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iex> reset_user_password(user, %{password: "valid", password_confirmation: "not the same"})
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{:error, %Ecto.Changeset{}}
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"""
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def reset_user_password(user, attrs) do
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Ecto.Multi.new()
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|> Ecto.Multi.update(:user, User.password_changeset(user, attrs))
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|> Ecto.Multi.delete_all(:tokens, UserToken.user_and_contexts_query(user, :all))
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|> Repo.transaction()
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|> case do
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{:ok, %{user: user}} -> {:ok, user}
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{:error, :user, changeset, _} -> {:error, changeset}
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end
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end
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end
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