import {z} from 'zod'

export type AnthropicSystemContent = {type: 'text', text: string};

export type AnthropicTool = {name: string, description?: (string | null) | undefined, input_schema: {[key: string]: unknown}};

export type AnthropicThinkingConfig = {type?: ('enabled' | 'disabled' | 'adaptive' | null) | undefined, budget_tokens?: (number | null) | undefined, enabled?: (boolean | null) | undefined};

export type AnthropicTokenCountRequest = {model: string, messages: Array<{[key: string]: unknown}>, system?: (string | Array<AnthropicSystemContent> | null) | undefined, tools?: (Array<AnthropicTool> | null) | undefined, thinking?: (AnthropicThinkingConfig | null) | undefined, tool_choice?: ({[key: string]: unknown} | null) | undefined};

export type CreateApiAnthropicV1MessagesCountTokensArgs = {'x-deepinfra-service-tier'?: (string | null) | undefined, 'xi-api-key'?: (string | null) | undefined, 'x-api-key'?: (string | null) | undefined, body: AnthropicTokenCountRequest};

export type CreateApiAnthropicV1MessagesCountTokensOptions = {baseUrl?: string | undefined, HTTPBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const createApiAnthropicV1MessagesCountTokensResponse = z.unknown();

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
};

/**
 * Anthropic Messages Count Tokens
 * 
 * POST /anthropic/v1/messages/count_tokens
 */
export const createApiAnthropicV1MessagesCountTokens = async (args: CreateApiAnthropicV1MessagesCountTokensArgs, options?: CreateApiAnthropicV1MessagesCountTokensOptions) => {
const {baseUrl = "https://api.deepinfra.com", fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

if (args['x-deepinfra-service-tier'] != null) headers.set("x-deepinfra-service-tier", String(args['x-deepinfra-service-tier']))
if (args['xi-api-key'] != null) headers.set("xi-api-key", String(args['xi-api-key']))
if (args['x-api-key'] != null) headers.set("x-api-key", String(args['x-api-key']))
if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/anthropic/v1/messages/count_tokens${query.size > 0 ? `?${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(createApiAnthropicV1MessagesCountTokensResponse, await res.json())
};