// Client calls to the thrift-shop endpoints (server/src/index.ts). Donating/withdrawing runs the
// validated create-before-delete transfer on the server; here we just kick it off and re-read.

export interface ShopItem {
  uri: string
  rkey: string
  did: string
  item: string
  title: string
  description?: string
  iconUrl: string | null
}

async function getJson<T>(url: string): Promise<T> {
  const res = await fetch(url, { credentials: 'include' })
  if (!res.ok) throw await shopError(res)
  return (await res.json()) as T
}

async function postJson<T>(url: string, body: unknown): Promise<T> {
  const res = await fetch(url, {
    method: 'POST',
    credentials: 'include',
    headers: { 'content-type': 'application/json' },
    body: JSON.stringify(body),
  })
  if (!res.ok) throw await shopError(res)
  return (await res.json()) as T
}

async function shopError(res: Response): Promise<Error> {
  const data = (await res.json().catch(() => null)) as { error?: string; message?: string } | null
  return new Error(data?.message || data?.error || `request failed (${res.status})`)
}

/** Whether the server has a shop account configured at all. */
export function fetchShopStatus(): Promise<{ configured: boolean }> {
  return getJson('/api/shop/status')
}

/** The shop's shelf. */
export function fetchShopItems(): Promise<{ shopDid: string; items: ShopItem[] }> {
  return getJson('/api/shop/items')
}

/** The caller's own items (requires a session). */
export function fetchMyItems(): Promise<{ did: string; items: ShopItem[] }> {
  return getJson('/api/shop/mine')
}

/** Donate one of my items to the shop. */
export function depositItem(rkey: string): Promise<{ itemUri: string; giveUri: string }> {
  return postJson('/api/shop/deposit', { rkey })
}

/** Withdraw a shop item into my repo. */
export function withdrawItem(rkey: string): Promise<{ itemUri: string; giveUri: string }> {
  return postJson('/api/shop/withdraw', { rkey })
}