# EmDash API Reference

Quick reference for EmDash-specific APIs used when porting themes.

> **See also:** The `scaffold/` directory contains working examples of all these patterns. When in doubt, copy from there.

## Content Retrieval

EmDash's query functions follow Astro's [live content collections](https://docs.astro.build/en/reference/experimental-flags/live-content-collections/) pattern, returning structured results for graceful error handling.

### getEmDashCollection

Fetch multiple entries from a collection.

```typescript
import { getEmDashCollection } from "emdash";

// Returns { entries, error }
const { entries: posts } = await getEmDashCollection("posts");

// With filters
const { entries: posts } = await getEmDashCollection("posts", {
	status: "published",
	limit: 10,
	where: { category: "news" },
});
```

### getEmDashEntry

Fetch a single entry by slug.

```typescript
import { getEmDashEntry } from "emdash";

// Returns { entry, error, isPreview }
const { entry: post } = await getEmDashEntry("posts", "hello-world");

if (!post) {
	return Astro.redirect("/404");
}
```

### Entry Shape

```typescript
interface Entry {
	id: string;
	collection: string;
	data: {
		title: string;
		slug: string;
		content: PortableTextBlock[];
		featured_image?: ImageField; // { src, alt } - NOT a string!
		// ... custom fields
	};
}
```

## Field Types at Runtime

**IMPORTANT:** Field types have specific runtime shapes. The most common mistake is treating image fields as strings.

### Image Fields

Image fields are **objects**, not strings:

```typescript
interface ImageField {
	src: string; // The resolved URL
	alt?: string;
}
```

```astro
{/* CORRECT */}
{post.data.featured_image?.src && (
  <img
    src={post.data.featured_image.src}
    alt={post.data.featured_image.alt || post.data.title}
  />
)}

{/* WRONG - renders [object Object] */}
<img src={post.data.featured_image} />
```

### Reference Fields

In seed files use `"$ref:id"` format. At runtime they may be resolved objects or strings.

### PortableText Fields

Rich content is an array of blocks with `_type` property.

## Site Settings

### getSiteSettings

Get all site settings.

```typescript
import { getSiteSettings } from "emdash";

const settings = await getSiteSettings();
console.log(settings.title); // "My Site"
console.log(settings.logo?.url); // Resolved media URL
```

### getSiteSetting

Get a single setting.

```typescript
import { getSiteSetting } from "emdash";

const title = await getSiteSetting("title");
const logo = await getSiteSetting("logo");
```

### Available Settings

| Key          | Type             | Description              |
| ------------ | ---------------- | ------------------------ |
| `title`      | `string`         | Site name                |
| `tagline`    | `string`         | Site tagline/description |
| `logo`       | `MediaReference` | Site logo with URL       |
| `favicon`    | `MediaReference` | Favicon with URL         |
| `social`     | `SocialLinks`    | Social media URLs        |
| `timezone`   | `string`         | Site timezone            |
| `dateFormat` | `string`         | Date display format      |

## Navigation Menus

### getMenu

Fetch a menu by name with resolved URLs.

```typescript
import { getMenu } from "emdash";

const menu = await getMenu("primary");

if (menu) {
	console.log(menu.items); // MenuItem[]
}
```

### getMenus

Get all menus (names only).

```typescript
import { getMenus } from "emdash";

const menus = await getMenus();
// [{ id, name, label }]
```

### MenuItem Shape

```typescript
interface MenuItem {
	id: string;
	label: string;
	url: string; // Resolved URL
	target?: string;
	children: MenuItem[];
}
```

### Rendering Menus

```astro
---
import { getMenu } from "emdash";

const primaryMenu = await getMenu("primary");
---
<nav>
  {primaryMenu?.items.map(item => (
    <a href={item.url}>{item.label}</a>
  ))}
</nav>
```

## Taxonomies

### getTaxonomyTerms

Get all terms for a taxonomy.

```typescript
import { getTaxonomyTerms } from "emdash";

const categories = await getTaxonomyTerms("categories");
const tags = await getTaxonomyTerms("tags");
```

### getTerm

Get a single term by slug.

```typescript
import { getTerm } from "emdash";

const term = await getTerm("categories", "news");
console.log(term?.label); // "News"
console.log(term?.count); // Number of entries
```

### getEntryTerms

Get terms assigned to a specific entry.

> **IMPORTANT:** This function does NOT take a `db` parameter.

```typescript
import { getEntryTerms } from "emdash";

// Get all terms for an entry
const terms = await getEntryTerms("posts", post.id);

// Get only categories
const categories = await getEntryTerms("posts", post.id, "categories");
```

### getEntriesByTerm

Get entries that have a specific term.

```typescript
import { getEntriesByTerm } from "emdash";

const posts = await getEntriesByTerm("posts", "categories", "news");
```

### TaxonomyTerm Shape

```typescript
interface TaxonomyTerm {
	id: string;
	name: string; // Taxonomy name
	slug: string; // Term slug
	label: string; // Display label
	children: TaxonomyTerm[];
	count?: number;
}
```

## Widget Areas

### getWidgetArea

Get a widget area by name.

```typescript
import { getWidgetArea } from "emdash";

const sidebar = await getWidgetArea("sidebar");

if (sidebar) {
	console.log(sidebar.widgets); // Widget[]
}
```

### Widget Types

| Type        | Description          | Key Fields             |
| ----------- | -------------------- | ---------------------- |
| `content`   | Rich text (PT)       | `content`              |
| `menu`      | Navigation menu      | `menuName`             |
| `component` | Registered component | `componentId`, `props` |

## Sections (Reusable Blocks)

Sections are reusable content blocks that editors can insert via `/section` slash command.

### getSection

Get a single section by slug.

```typescript
import { getSection } from "emdash";

const cta = await getSection("newsletter-cta");
// Returns { id, slug, title, content, keywords, source }
```

### getSections

List sections with optional filters.

```typescript
import { getSections } from "emdash";

// Get all sections
const all = await getSections();

// Filter by source: "theme" | "user" | "import"
const imported = await getSections({ source: "import" });
```

### Section Sources

| Source   | Description                             |
| -------- | --------------------------------------- |
| `theme`  | Defined in seed file                    |
| `user`   | Created by editors in admin             |
| `import` | Imported from WordPress reusable blocks |

## Search

### search

Global search across collections.

```typescript
import { search } from "emdash";

const results = await search("hello world", {
	collections: ["posts", "pages"], // Optional: limit to specific collections
	status: "published", // Optional: filter by status
	limit: 20, // Optional: max results
});

// Returns { results: SearchResult[], total, nextCursor? }
results.results.forEach((r) => {
	console.log(r.collection); // "posts"
	console.log(r.id); // Entry ID
	console.log(r.title); // Entry title
	console.log(r.slug); // Entry slug
	console.log(r.snippet); // HTML snippet with <mark> highlights
	console.log(r.score); // Relevance score
});
```

### LiveSearch Component

Ready-to-use search with instant results:

```astro
---
import LiveSearch from "emdash/ui/search";
---

<LiveSearch
  placeholder="Search..."
  collections={["posts", "pages"]}
/>
```

Features:

- Debounced instant search
- Prefix matching (automatic `*` suffix)
- Porter stemming ("run" finds "running")
- Result snippets with `<mark>` highlights

### Search Configuration

Search is enabled per-collection via admin UI:

1. Edit Content Type → check "Search" in Features
2. Edit fields → check "Searchable" for text fields

Only collections with search enabled are indexed.

## Rendering Content

### PortableText Component

```astro
---
import { PortableText } from "emdash/ui";
---

<PortableText value={post.data.content} />
```

## CLI Commands

### Apply Seed

The seed is inlined into the build and applied automatically on the first request when the database is empty and the setup wizard hasn't been completed. Validation runs at apply time — errors surface in the dev server logs. To re-seed during iteration, delete `data.db` and restart the dev server.

Common validation errors caught:

- Image fields with raw URLs (should use `$media`)
- Reference fields with raw IDs (should use `$ref:id`)
- PortableText not an array or missing `_type`
- Type mismatches (string vs number, etc.)

### Export Seed

```bash
# Export schema only
emdash export-seed

# Export schema and all content
emdash export-seed --with-content

# Export specific collections
emdash export-seed --with-content=posts,pages
```

## Configuration

### astro.config.mjs

```javascript
import { defineConfig } from "astro/config";
import emdash, { local } from "emdash/astro";
import { sqlite } from "emdash/db";

export default defineConfig({
	integrations: [
		emdash({
			database: sqlite({ url: "file:./data.db" }),
			storage: local({
				directory: "./uploads",
				baseUrl: "/_emdash/api/media/file",
			}),
		}),
	],
});
```

### live.config.ts

```typescript
// src/live.config.ts
import { defineLiveCollection } from "astro:content";
import { emdashLoader } from "emdash/runtime";

export const collections = {
	_emdash: defineLiveCollection({ loader: emdashLoader() }),
};
```

## Common Patterns

### Homepage with Recent Posts

```astro
---
import { getEmDashCollection, getSiteSettings } from "emdash";
import Base from "../layouts/Base.astro";

const settings = await getSiteSettings();
const { entries: posts } = await getEmDashCollection("posts", { limit: 10 });
---
<Base title={settings.title}>
  {posts.map(post => (
    <article>
      <a href={`/posts/${post.data.slug}`}>{post.data.title}</a>
    </article>
  ))}
</Base>
```

### Category Archive

```astro
---
import { getTerm, getEntriesByTerm } from "emdash";

const { slug } = Astro.params;
const category = await getTerm("categories", slug);
const posts = await getEntriesByTerm("posts", "categories", slug);
---
<h1>{category?.label}</h1>
{posts.map(post => (
  <a href={`/posts/${post.data.slug}`}>{post.data.title}</a>
))}
```

### Dynamic Navigation

```astro
---
import { getMenu, getSiteSettings } from "emdash";

const settings = await getSiteSettings();
const primaryMenu = await getMenu("primary");
---
<header>
  <a href="/">{settings.title}</a>
  <nav>
    {primaryMenu?.items.map(item => (
      <a href={item.url}>{item.label}</a>
    ))}
  </nav>
</header>
```