PhoenixKit.Users.Auth.Scope (phoenix_kit v2.0.1)

Scope module for encapsulating PhoenixKit authentication state.

This module provides a structured way to handle user authentication context throughout your Phoenix application, similar to Phoenix's built-in authentication patterns but with PhoenixKit prefixing to avoid conflicts.

Nil scopes

Every predicate and accessor here tolerates a nil scope and answers as if the visitor were unauthenticated. Host layouts render on kit auth pages with phoenix_kit_current_scope unset, so authenticated?(nil) and anonymous?(nil) are ordinary calls, not programmer errors — and "no scope" and "a scope with no user" mean the same thing to a caller deciding what to render.

The exception is to_map/1, which deliberately does not accept nil. There is nothing meaningful to serialize for a non-scope, and returning an empty map would fabricate data that looks real; it is a debug/serialization helper, so failing surfaces the bug where permissiveness would bury it. Its spec keeps t(), so the type checker rejects to_map(nil) at compile time rather than leaving it to blow up at runtime.

Apply the same rule to anything added here: if nil has a correct answer, give it one; if answering would mean inventing data, let it raise.

Usage

# Create scope for authenticated user
scope = Scope.for_user(user)

# Create scope for anonymous user
scope = Scope.for_user(nil)

# Check authentication status
Scope.authenticated?(scope)  # true or false

# Get user information
Scope.user(scope)        # %User{} or nil
Scope.user_uuid(scope)   # user.uuid or nil
Scope.user_email(scope)  # user.email or nil

Role & State Checks

Scope.has_role?(scope, "Admin")  # true/false
Scope.owner?(scope)             # Owner role?
Scope.can_access_admin_area?(scope)  # Owner, Admin, or custom role with permissions?
Scope.system_role?(scope)       # Strictly Owner or Admin (not custom roles)?
Scope.anonymous?(scope)         # Not authenticated?
Scope.user_roles(scope)         # ["Admin", "User"]
Scope.user_full_name(scope)     # "John Doe" or nil
Scope.user_active?(scope)       # true/false
Scope.to_map(scope)             # Debug-friendly map of all fields

Module-Level Permissions

Permissions are cached in the scope when it is built via for_user/1 (on mount and on PubSub-triggered refresh). Owner gets every key automatically. Admin defaults to all keys via seeding/auto-grant but is genuinely gated by its rows — the full-access fallback applies only on an unseeded install (no permission rows exist at all).

Scope.has_module_access?(scope, "billing")          # Single key check (pure cache)
Scope.can?(scope, "calendar.view_others")           # Key held AND module enabled
Scope.has_any_module_access?(scope, ["billing", "shop"])  # Any of these?
Scope.has_all_module_access?(scope, ["billing", "shop"])  # All of these?
Scope.accessible_modules(scope)                     # MapSet of granted keys
Scope.permission_count(scope)                       # Number of granted keys

Struct Fields

:user - The current user struct or nil
:authenticated? - Boolean indicating if user is authenticated
:cached_roles - List of role name strings, loaded at scope creation
:cached_permissions - MapSet of granted permission keys, loaded at scope creation

Summary

Types

t()

Functions

accessible_modules(scope)

Returns the set of module keys the user can access.

admin?(scope) deprecated

Deprecated alias for can_access_admin_area?/1.

anonymous?(arg1)

Checks if the scope represents an anonymous (non-authenticated) user.

authenticated?(arg1)

Checks if the scope represents an authenticated user.

can?(arg1, key)

Checks whether the user holds a permission key AND that key is currently effective — the module behind it (or behind its parent, for sub-permission keys like "calendar.view_others") is enabled.

can_access_admin_area?(arg1)

Checks if the user can access the admin AREA — the /admin shell entry gate.

for_user(user)

Creates a new scope for the given user.

has_all_module_access?(arg1, keys)

Checks if the user has access to all of the given module keys.

has_any_module_access?(arg1, keys)

Checks if the user has access to at least one of the given module keys.

has_module_access?(arg1, module_key)

Checks if the user has access to a specific admin module/section.

has_role?(arg1, role_name)

Checks if the user has a specific role.

holds_all_enabled_permissions?(scope)

Whether this scope holds EVERY currently-grantable permission key — i.e. it can reach everything the permission system exposes right now, exactly like Owner. Purely permission-based and role-AGNOSTIC: a custom role granted all permissions returns true, with no role-name special-casing.

owner?(arg1)

Checks if the user is an owner.

permission_count(arg1)

Returns the number of module permissions the user has been granted.

superadmin?(arg1)

Whether the scope holds the wildcard superadmin key ("*") — a blanket, drift-immune grant to every permission-gated FEATURE/VIEW. Owner holds it by construction; a host can grant it to a custom role to make that role Owner-equivalent for feature access with one grant, and unlike a "grant every current key" role it stays complete as new modules are added.

system_role?(arg1)

Checks if the user holds the Owner or Admin system role.

to_map(scope)

Converts scope to a map for debugging or logging purposes.

user(arg1)

Gets the user from the scope.

user_active?(arg1)

Checks if the user is active.

user_email(arg1)

Gets the user email from the scope.

user_full_name(arg1)

Gets the user's full name.

user_roles(arg1)

Gets all roles for the user.

user_uuid(arg1)

Gets the user ID (UUID) from the scope.

Types

t()

@type t() :: %PhoenixKit.Users.Auth.Scope{
  authenticated?: boolean(),
  cached_permissions: MapSet.t() | nil,
  cached_roles: [String.t()] | nil,
  multi_session_accounts: list(),
  multi_session_allowed?: boolean(),
  user: PhoenixKit.Users.Auth.User.t() | nil
}

Functions

accessible_modules(scope)

@spec accessible_modules(t()) :: MapSet.t()

Returns the set of module keys the user can access.

admin?(scope)

This function is deprecated. Use can_access_admin_area?/1 — `admin?` is true for ANY permission holder, not just the Admin role..

@spec admin?(t()) :: boolean()

Deprecated alias for can_access_admin_area?/1.

The name misleads: it returns true for ANY permission holder, not just the Admin role. Call can_access_admin_area?/1 instead.

anonymous?(arg1)

@spec anonymous?(t() | nil) :: boolean()

Checks if the scope represents an anonymous (non-authenticated) user.

Examples

iex> scope = PhoenixKit.Users.Auth.Scope.for_user(nil)
iex> PhoenixKit.Users.Auth.Scope.anonymous?(scope)
true

iex> user = %PhoenixKit.Users.Auth.User{uuid: "0193a5e4-0000-7000-8000-000000000001"}
iex> scope = PhoenixKit.Users.Auth.Scope.for_user(user)
iex> PhoenixKit.Users.Auth.Scope.anonymous?(scope)
false

authenticated?(arg1)

@spec authenticated?(t() | nil) :: boolean()

Checks if the scope represents an authenticated user.

Examples

iex> user = %PhoenixKit.Users.Auth.User{uuid: "0193a5e4-0000-7000-8000-000000000001"}
iex> scope = PhoenixKit.Users.Auth.Scope.for_user(user)
iex> PhoenixKit.Users.Auth.Scope.authenticated?(scope)
true

iex> scope = PhoenixKit.Users.Auth.Scope.for_user(nil)
iex> PhoenixKit.Users.Auth.Scope.authenticated?(scope)
false

can?(arg1, key)

@spec can?(t(), String.t()) :: boolean()

Checks whether the user holds a permission key AND that key is currently effective — the module behind it (or behind its parent, for sub-permission keys like "calendar.view_others") is enabled.

This is the check modules should use for fine-grained, in-page authorization. Unlike has_module_access?/2 (a pure cache lookup used on hot paths where enablement is enforced separately at mount), can?/2 consults live module-enablement state, so a scope snapshotted before a module was disabled cannot keep authorizing its actions.

Examples

Scope.can?(scope, "calendar.edit_others")
Scope.can?(scope, "calendar")

can_access_admin_area?(arg1)

@spec can_access_admin_area?(t()) :: boolean()

Checks if the user can access the admin AREA — the /admin shell entry gate.

Returns true when the user holds the Admin or Owner role, OR has been explicitly granted any module-level permission (via RolePermission) — so a custom role (e.g. "Editor", "Support") holding at least one permission can enter the admin area.

This is a COARSE entry gate only. It does NOT mean the user is a privileged operator: holding a single grant is enough. Which pages and actions are actually allowed is enforced per-view by has_module_access?/2 / can?/2. For a "can do everything, like Owner" check use holds_all_enabled_permissions?/1 or superadmin?/1 instead — never this.

Examples

iex> user = %PhoenixKit.Users.Auth.User{uuid: "0193a5e4-0000-7000-8000-000000000001"}
iex> scope = PhoenixKit.Users.Auth.Scope.for_user(user)
iex> PhoenixKit.Users.Auth.Scope.can_access_admin_area?(scope)
true

iex> scope = PhoenixKit.Users.Auth.Scope.for_user(nil)
iex> PhoenixKit.Users.Auth.Scope.can_access_admin_area?(scope)
false

for_user(user)

@spec for_user(PhoenixKit.Users.Auth.User.t() | nil) :: t()

Creates a new scope for the given user.

Examples

iex> user = %PhoenixKit.Users.Auth.User{uuid: "0193a5e4-0000-7000-8000-000000000001", email: "user@example.com"}
iex> scope = PhoenixKit.Users.Auth.Scope.for_user(user)
iex> scope.authenticated?
true
iex> scope.user.email
"user@example.com"

iex> scope = PhoenixKit.Users.Auth.Scope.for_user(nil)
iex> scope.authenticated?
false
iex> scope.user
nil

has_all_module_access?(arg1, keys)

@spec has_all_module_access?(t(), [String.t()]) :: boolean()

Checks if the user has access to all of the given module keys.

Examples

Scope.has_all_module_access?(scope, ["billing", "shop"])

has_any_module_access?(arg1, keys)

@spec has_any_module_access?(t(), [String.t()]) :: boolean()

Checks if the user has access to at least one of the given module keys.

Examples

Scope.has_any_module_access?(scope, ["billing", "shop"])

has_module_access?(arg1, module_key)

@spec has_module_access?(t(), String.t()) :: boolean()

Checks if the user has access to a specific admin module/section.

Looks up module_key in cached_permissions. Owner access works because for_user/1 pre-populates all keys for owners; this function itself does not special-case roles.

has_role?(arg1, role_name)

@spec has_role?(t(), String.t()) :: boolean()

Checks if the user has a specific role.

Examples

iex> user = %PhoenixKit.Users.Auth.User{uuid: "0193a5e4-0000-7000-8000-000000000001"}
iex> scope = PhoenixKit.Users.Auth.Scope.for_user(user)
iex> PhoenixKit.Users.Auth.Scope.has_role?(scope, "Admin")
true

iex> scope = PhoenixKit.Users.Auth.Scope.for_user(nil)
iex> PhoenixKit.Users.Auth.Scope.has_role?(scope, "Admin")
false

holds_all_enabled_permissions?(scope)

@spec holds_all_enabled_permissions?(t()) :: boolean()

Compared against Permissions.enabled_module_keys/0 (the grantable set the permissions matrix produces), NOT all_module_keys/0. Disabled modules expose no reachable admin surface and their keys can't be granted via the UI, so a grant-all custom role legitimately lacks them — including them would re-introduce the Owner-vs-custom asymmetry this is meant to remove (Owner's set is a superset that trivially satisfies the subset test either way). The size > 0 guard stops an empty grantable set from making subset?/2 vacuously true (a fail-open) for every scope; in practice the 5 core + 2 integration keys are a non-disableable floor, but the guard never rots.

owner?(arg1)

@spec owner?(t()) :: boolean()

Checks if the user is an owner.

Examples

iex> user = %PhoenixKit.Users.Auth.User{uuid: "0193a5e4-0000-7000-8000-000000000001"}
iex> scope = PhoenixKit.Users.Auth.Scope.for_user(user)
iex> PhoenixKit.Users.Auth.Scope.owner?(scope)
true

iex> scope = PhoenixKit.Users.Auth.Scope.for_user(nil)
iex> PhoenixKit.Users.Auth.Scope.owner?(scope)
false

permission_count(arg1)

@spec permission_count(t()) :: non_neg_integer()

Returns the number of module permissions the user has been granted.

superadmin?(arg1)

@spec superadmin?(t()) :: boolean()

Scope: feature/view access only. The Owner-only role-management safety rails (editing the Admin role, assigning Owner/Admin, the last-Owner guard) remain role-name-based by design and are NOT unlocked by "*".

system_role?(arg1)

@spec system_role?(t()) :: boolean()

Checks if the user holds the Owner or Admin system role.

Unlike admin?/1 which also returns true for custom roles with permissions, this strictly checks for the two built-in system roles.

to_map(scope)

@spec to_map(t()) :: map()

Converts scope to a map for debugging or logging purposes.

Examples

iex> user = %PhoenixKit.Users.Auth.User{uuid: "0193a5e4-0000-7000-8000-000000000001", email: "user@example.com"}
iex> scope = PhoenixKit.Users.Auth.Scope.for_user(user)
iex> PhoenixKit.Users.Auth.Scope.to_map(scope)
%{
  authenticated?: true,
  user_uuid: "019...",
  user_email: "user@example.com",
  user_roles: ["Admin", "User"],
  owner?: false,
  admin?: true
}

user(arg1)

@spec user(t() | nil) :: PhoenixKit.Users.Auth.User.t() | nil

Gets the user from the scope.

Examples

iex> user = %PhoenixKit.Users.Auth.User{uuid: "0193a5e4-0000-7000-8000-000000000001", email: "user@example.com"}
iex> scope = PhoenixKit.Users.Auth.Scope.for_user(user)
iex> PhoenixKit.Users.Auth.Scope.user(scope)
%PhoenixKit.Users.Auth.User{uuid: "0193a5e4-0000-7000-8000-000000000001", email: "user@example.com"}

iex> scope = PhoenixKit.Users.Auth.Scope.for_user(nil)
iex> PhoenixKit.Users.Auth.Scope.user(scope)
nil

user_active?(arg1)

@spec user_active?(t() | nil) :: boolean()

Checks if the user is active.

Examples

iex> user = %PhoenixKit.Users.Auth.User{is_active: true}
iex> scope = PhoenixKit.Users.Auth.Scope.for_user(user)
iex> PhoenixKit.Users.Auth.Scope.user_active?(scope)
true

iex> scope = PhoenixKit.Users.Auth.Scope.for_user(nil)
iex> PhoenixKit.Users.Auth.Scope.user_active?(scope)
false

user_email(arg1)

@spec user_email(t() | nil) :: String.t() | nil

Gets the user email from the scope.

Examples

iex> user = %PhoenixKit.Users.Auth.User{uuid: "0193a5e4-0000-7000-8000-000000000001", email: "user@example.com"}
iex> scope = PhoenixKit.Users.Auth.Scope.for_user(user)
iex> PhoenixKit.Users.Auth.Scope.user_email(scope)
"user@example.com"

iex> scope = PhoenixKit.Users.Auth.Scope.for_user(nil)
iex> PhoenixKit.Users.Auth.Scope.user_email(scope)
nil

user_full_name(arg1)

@spec user_full_name(t() | nil) :: String.t() | nil

Gets the user's full name.

Examples

iex> user = %PhoenixKit.Users.Auth.User{first_name: "John", last_name: "Doe"}
iex> scope = PhoenixKit.Users.Auth.Scope.for_user(user)
iex> PhoenixKit.Users.Auth.Scope.user_full_name(scope)
"John Doe"

iex> scope = PhoenixKit.Users.Auth.Scope.for_user(nil)
iex> PhoenixKit.Users.Auth.Scope.user_full_name(scope)
nil

user_roles(arg1)

@spec user_roles(t()) :: [String.t()]

Gets all roles for the user.

Examples

iex> user = %PhoenixKit.Users.Auth.User{uuid: "0193a5e4-0000-7000-8000-000000000001"}
iex> scope = PhoenixKit.Users.Auth.Scope.for_user(user)
iex> PhoenixKit.Users.Auth.Scope.user_roles(scope)
["Admin", "User"]

iex> scope = PhoenixKit.Users.Auth.Scope.for_user(nil)
iex> PhoenixKit.Users.Auth.Scope.user_roles(scope)
[]

user_uuid(arg1)

@spec user_uuid(t() | nil) :: String.t() | nil

Gets the user ID (UUID) from the scope.

Examples

iex> scope = PhoenixKit.Users.Auth.Scope.for_user(user)
iex> PhoenixKit.Users.Auth.Scope.user_uuid(scope)
"0193a5e4-..."

iex> scope = PhoenixKit.Users.Auth.Scope.for_user(nil)
iex> PhoenixKit.Users.Auth.Scope.user_uuid(scope)
nil