// Minimal GraphQL client — swap for graphql-request if preferred.

const API_URL = import.meta.env.VITE_API_URL ?? '/graphql'

export async function gql<T = unknown>(
  query: string,
  variables?: Record<string, unknown>,
): Promise<T> {
  const token = localStorage.getItem('token')
  const res = await fetch(API_URL, {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      ...(token ? { Authorization: `Bearer ${token}` } : {}),
    },
    body: JSON.stringify({ query, variables }),
  })

    const json = await res.json()
  if (json.errors?.length) {
    if (json.errors[0].message === 'UNAUTHORIZED') {
      localStorage.removeItem('token')
      localStorage.removeItem('username')
      window.location.href = '/'
    }
    throw new Error(json.errors[0].message)
  }
  return json.data as T
}

export async function createFolder(path: string): Promise<{ createFolder: boolean }> {
  const query = `mutation CreateFolder($path: String!) { createFolder(path: $path) }`
  return gql(query, { path })
}

export async function moveDocument(oldSlug: string, newSlug: string): Promise<{ moveDocument: boolean }> {
  const query = `mutation MoveDocument($oldSlug: String!, $newSlug: String!) { moveDocument(oldSlug: $oldSlug, newSlug: $newSlug) }`
  return gql(query, { oldSlug, newSlug })
}

export async function getFolders(): Promise<{ folders: string[] }> {
  const query = `query GetFolders { folders }`
  return gql(query)
}