321 lines
8.1 KiB
Elixir
321 lines
8.1 KiB
Elixir
defmodule PhoenixPasskeys.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 PhoenixPasskeys.Repo
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alias PhoenixPasskeys.Accounts.{User, UserCredential, 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 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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"""
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def register_user(email, credential_id, public_key_spki) do
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Repo.transaction(fn ->
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user =
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%User{}
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|> User.registration_changeset(%{email: email})
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|> Repo.insert()
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|> case do
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{:ok, user} -> user
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{:error, changeset} -> Repo.rollback(changeset)
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end
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%UserCredential{}
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|> UserCredential.changeset(%{
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id: credential_id,
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public_key_spki: public_key_spki,
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user_id: user.id
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})
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|> Repo.insert()
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|> case do
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{:ok, _credential} -> nil
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{:error, changeset} -> Repo.rollback(changeset)
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end
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user
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end)
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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, validate_email: 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, validate_email: false)
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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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"""
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def apply_user_email(user, attrs) do
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user
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|> User.email_changeset(attrs)
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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, _} <- Repo.transaction(user_email_multi(user, email, context)) 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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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 ~S"""
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Delivers the update email instructions to the given user.
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## Examples
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iex> deliver_user_update_email_instructions(user, current_email, &url(~p"/users/settings/confirm_email/#{&1})")
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{:ok, %{to: ..., body: ...}}
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"""
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def deliver_user_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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## 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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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_user_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 ~S"""
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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, &url(~p"/users/confirm/#{&1}"))
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{:ok, %{to: ..., body: ...}}
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iex> deliver_user_confirmation_instructions(confirmed_user, &url(~p"/users/confirm/#{&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)) 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 ~S"""
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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, &url(~p"/users/reset_password/#{&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_credentials(user, credential_id, public_key_spki) do
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Ecto.Multi.new()
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|> Ecto.Multi.delete_all(
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:old_credentials,
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from(a in UserCredential, where: a.user_id == ^user.id)
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)
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|> Ecto.Multi.insert(
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:new_credential,
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UserCredential.changeset(%UserCredential{}, %{
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id: credential_id,
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public_key_spki: public_key_spki,
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user_id: user.id
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})
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)
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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, _} -> :ok
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{:error, _, changeset, _} -> {:error, changeset}
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end
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end
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def get_credential(id) do
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Repo.get(UserCredential, id)
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|> Repo.preload(:user)
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end
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def get_credentials_by_email(email) do
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Repo.one(from u in User, where: u.email == ^email, preload: :credentials)
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|> case do
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%{credentials: credentials} -> credentials
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nil -> []
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end
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end
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end
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