firestoreAdd

// Define a function to add a post
const addPost = firestoreAdd('posts')

// Use the function to add a post
await addPost({ title: 'My post' })

// Define a function to add a comment to a post
const postId = 'post-id-1'
const addComment = firestoreAdd<Comment>(`posts/${postId}/comments`)

// Now we can add a comment to the post
const authorId = 'user-id-2'
await addComment({ body: 'This is a great post!', authorId })

// Define a function to add a post
const addComment = firestoreAdd<Comment>(
  ({ postId }) => `posts/${postId}/comments`,
)

const postId = 'post-id-1'
await addComment({ body: 'That was a great read!' }, { postId })

type Comment = {
  body: string
  postId: string // The id of the post this comment belongs to
}

// Define a function to add a comment to a post
const addComment = firestoreAdd<Comment>(
  ({ data }) => `posts/${data.postId}/comments`,
)

const postId = 'post-id-1'
await addComment({ body: 'That was a great read!', postId })

const ref = await addPost({ title: 'My post' })

// The value returned is a DocumentReference
await ref.update({ body: 'My post body' })

type Post = {
  title: string
  body: string
}

const addPost = firestoreAdd<Post>('posts')

// Throws a type error because the body property is missing.
await addPost({ title: 'My post' })

// The addPost function will include metadata to the new document.
const addPost = firestoreAdd<Post>('posts', { addMetadata: true })

await addPost({ title: 'Post 1' })
await addPost({ title: 'Post 2' })
await addPost({ title: 'Post 3' })

// The posts will be ordered by the time they were created.
const recentPosts = await firestore
  .collection('posts')
  .orderBy('metadata.timeCreated', 'asc')
  .limit(10)
  .get()