# Configuration

Incant combines application configuration with module DSL options. Library mode uses host Phoenix and asset configuration; standalone mode additionally reads endpoint and registry environment variables.

## Application Options
{: .col-2}

### UI Adapter

```elixir
config :incant,
  ui_adapter: Incant.UI.Adapters.LiveView
```

Default semantic UI adapter.

### Density

```elixir
config :incant, density: :compact
```

Default adapter density. Themes may support `:compact`, `:comfortable`, and `:spacious`.

### Per-Admin UI

```elixir
config :incant, MyApp.Admin,
  density: :comfortable
```

Overrides application UI options for one admin root.

### Global Naming

```elixir
config :incant,
  naming: [terms: %{api: "API", oauth: "OAuth"}]
```

Fallback naming vocabulary. Admin-root naming takes precedence when contracts are resolved.

### Standalone Serving

```elixir
config :incant, serve?: true
```

Starts Incant PubSub, registry server, and endpoint. Default: `false`.

### Standalone Registry

```elixir
config :incant,
  registry: [env: "HOSTKIT_RPC_BINDINGS"]
```

Binding-path environment variable used by the standalone registry.

## Admin Root Options
{: .col-2}

### Repo

```elixir
use Incant.Admin, repo: MyApp.Repo
```

Default repo for inferred and resource-backed surfaces.

### Theme

```elixir
use Incant.Admin, theme: MyApp.Admin.Themes.Default
```

Theme metadata module.

### Policy

```elixir
use Incant.Admin, policy: MyApp.Admin.Policy
```

Default authorization and scoping policy.

### Actor Assign

```elixir
use Incant.Admin, actor_assign: :current_scope
```

LiveView assign containing the actor.

### Actor Callback

```elixir
use Incant.Admin,
  actor: {MyApp.Admin.Actor, :from_assigns}
```

Custom extraction callback receiving LiveView assigns.

### Naming

```elixir
use Incant.Admin,
  naming: [terms: %{openai: "OpenAI", llm: "LLM"}]
```

Vocabulary for inferred titles, labels, options, badges, and known data terms.

### Service Identity

```elixir
use Incant.Admin,
  service: :billing,
  version: "1"
```

Stable identity for portable service contracts.

### RPC

```elixir
use Incant.Admin, rpc: true
```

Exposes standard Incant service operations through SafeRPC adapter metadata.

## Surface Registration
{: .col-2}

### Resource

```elixir
resource MyApp.Admin.Resources.Product
```

Registers an explicit resource module.

### Expose Schema

```elixir
expose MyApp.Catalog.Product
```

Uses a conventional resource override when present, otherwise infers a schema-backed resource.

### Dashboard

```elixir
dashboard MyApp.Admin.Dashboards.Operations
```

### Dataset

```elixir
dataset MyApp.Admin.Datasets.Sales
```

## Resource Options
{: .col-2}

### Schema and Repo

```elixir
use Incant.Resource,
  schema: MyApp.Catalog.Product,
  repo: MyApp.Repo
```

### Base Query Callback

```elixir
use Incant.Resource,
  schema: MyApp.Catalog.Product,
  repo: MyApp.Repo

query &MyApp.Admin.Queries.products/2
```

Returns the base queryable before policy scope, search, filters, sorting, and pagination are applied.

### Custom Index and Read

```elixir
use Incant.Resource,
  title: "Product Health"

index &MyApp.Admin.Products.index/2
read &MyApp.Admin.Products.read/2
```

Application-owned callbacks for custom storage, projections, or in-memory rows.

### Local Policy

```elixir
use Incant.Resource,
  policy: MyApp.Admin.Policies.Catalog
```

Overrides the root policy for the surface.

## Table Options
{: .col-2}

### Column

```elixir
column :name,
  label: "Product",
  link: true,
  sortable: true,
  format: nil
```

### Badge

```elixir
column :status, as: :badge
```

Uses naming vocabulary for enum-style display.

### Search

```elixir
search [:name, :email]
```

### Filter

```elixir
filter :status, :select,
  options: [:draft, :active, :archived]
```

### Multi-Select Filter

```elixir
filter :provider, :multi_select,
  options: [:openai, :anthropic, :google]
```

### Date-Range Filter

```elixir
filter :inserted_at, :date_range
```

### Row Action

```elixir
action :archive,
  callback: &MyApp.Catalog.archive/2,
  confirm: "Archive this product?",
  destructive: true
```

### Bulk Action

```elixir
actions do
  bulk :publish,
    callback: &MyApp.Catalog.publish_many/2
end
```

## Form Options
{: .col-2}

### Text Field

```elixir
field :name
```

### Select Field

```elixir
field :status, :select,
  options: [:draft, :active, :archived]
```

### Textarea

```elixir
field :description, :textarea
```

### Boolean

```elixir
field :featured, :boolean
```

### Number

```elixir
field :position, :number
```

### Date

```elixir
field :published_on, :date
```

### Hidden

```elixir
field :account_id, :hidden
```

## Dashboard Options
{: .col-2}

### Variable

```elixir
var :range, :date_range,
  default: {:last, 24, :hours}
```

Supported built-in controls include `:date_range`, `:select`, `:multi_select`, `:boolean`, `:number`, `:date`, hidden, and text-like controls.

### Grid

```elixir
grid columns: 12, row_height: 8 do
  # widgets
end
```

### Stat

```elixir
stat :requests,
  span: 3,
  label: "Requests",
  format: :compact_number,
  query: &MyApp.Metrics.requests/2
```

### Timeseries

```elixir
timeseries :requests_over_time,
  span: 8,
  query: &MyApp.Metrics.timeline/2
```

### Table Widget

```elixir
table :recent_failures,
  span: 4,
  query: &MyApp.Metrics.failures/2 do
  column :provider
  column :latency_ms, format: :duration_ms
  column :cost_usd, format: :money
end
```

### Chart

```elixir
chart :cost_over_time, :line, span: 8 do
  dataset MyApp.Admin.Datasets.Usage
  x :timestamp, bucket: :hour
  y :cost_usd
  series :provider
end
```

## Formats
{: .col-2}

### Money

```elixir
format: :money
```

USD display such as `$1,234.50`. `:currency` is an alias.

### Number

```elixir
format: :number
```

Delimited integer/decimal display.

### Compact Number

```elixir
format: :compact_number
```

Examples: `12.4k`, `1.4M`, `2.1B`.

### Duration

```elixir
format: :duration_ms
```

Treats the value as milliseconds and displays `240ms`, `1.8s`, `2.4m`, or `1.2h`.

### Date and Time

```elixir
format: :datetime
format: :date
format: :time
```

### Relative Time

```elixir
format: :relative
```

Examples: `45s ago`, `3h ago`, `in 2m`.

### Percent

```elixir
format: :percent
```

Treats `0.125` as `12.5%`.

### Boolean

```elixir
format: :boolean
```

Displays `Yes` or `No`.

### Identifier

```elixir
format: :id
```

Shortens long string identifiers to the first eight characters plus an ellipsis. Full values remain available to adapter tooltips where supported.

## Volt Assets
{: .col-2}

### Resolve Dependencies

```elixir
config :volt,
  resolve_dirs: ["deps"]
```

### Mount Embedded Behavior

```javascript
import { mountIncant } from "incant"

mountIncant()
```

### Standalone Entry

```javascript
import "incant/standalone"
```

Creates the standalone LiveSocket and mounts Incant behavior.

### Tailwind Source

```css
@source "../deps/incant/lib";
```

## Standalone Environment
{: .col-2}

### Serve

```text
INCANT_SERVE=true
```

Enables the bundled endpoint in production.

### HTTP Address

```text
INCANT_HTTP_IP=127.0.0.1
INCANT_HTTP_PORT=4000
```

Invalid IP values fall back to loopback.

### Secret Key Base

```text
INCANT_SECRET_KEY_BASE=...
```

Required when standalone serving is enabled in production.

### LiveView Signing Salt

```text
INCANT_LIVE_VIEW_SIGNING_SALT=...
```

Standalone LiveView signing salt.

### Binding Path

```text
HOSTKIT_RPC_BINDINGS=/run/incant/rpc.etf
```

Trusted ETF registry-binding file.

### Binding Variable Name

```text
INCANT_RPC_BINDINGS_ENV=HOSTKIT_RPC_BINDINGS
```

Changes which environment variable contains the binding path.