import {z} from 'zod'

export type DedicatedEmbeddingsBody = {model: string, input?: (string | Array<string> | null) | undefined, tokens?: (Array<number> | null) | undefined, encoding_format?: ('float' | 'base64' | null) | undefined};

export type CreateApiDedicatedV1EmbeddingsArgs = {'X-Friendli-Team'?: (string | null) | undefined, body: DedicatedEmbeddingsBody};

export type CreateApiDedicatedV1EmbeddingsOptions = {baseUrl?: string | undefined, token?: string | undefined, fetch?: typeof fetch | undefined};

export const embeddingObject = z.object({index: z.number().int(), object: z.literal("embedding"), embedding: z.union([z.array(z.number()), z.string()])});

export const promptTokensDetails = z.object({cached_tokens: z.number().int().nullable().optional()});

export const textUsage = z.object({prompt_tokens: z.number().int(), completion_tokens: z.number().int(), total_tokens: z.number().int(), prompt_tokens_details: promptTokensDetails.nullable().optional()});

export const dedicatedEmbeddingsSuccess = z.object({id: z.string(), model: z.string().nullable().optional(), object: z.literal("list"), data: z.array(embeddingObject), usage: textUsage, created: z.number().int()});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Embeddings
 * 
 * POST /dedicated/v1/embeddings
 */
export const createApiDedicatedV1Embeddings = async (args: CreateApiDedicatedV1EmbeddingsArgs, options?: CreateApiDedicatedV1EmbeddingsOptions) => {
const {baseUrl = "https://api.friendli.ai", fetch: fetchFn = fetch, token} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('content-type', "application/json")
headers.set('accept', "application/json")

if (args['X-Friendli-Team'] != null) headers.set("X-Friendli-Team", String(args['X-Friendli-Team']))
if (token !== undefined) headers.set('authorization', `Bearer ${token}`)

const url = `${baseUrl.replace(/\/+$/, '')}/dedicated/v1/embeddings${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(dedicatedEmbeddingsSuccess, await res.json())
};