import {z} from 'zod'

export type BloombergProviderKwargsPostType = 'EOD' | 'RT' | 'EOD_AND_RT';

export type BloombergProviderKwargs = {post_type: BloombergProviderKwargsPostType};

export type ReutersProviderKwargsPostType = 'EOD' | 'RT' | 'EOD_AND_RT' | 'EOD_AND_RT_COMBINED';

export type ReutersProviderKwargs = {post_type?: ReutersProviderKwargsPostType | undefined};

export type SecapiProviderKwargs = {metric: string, security_name: string, security_type: string};

export type NasdaqProviderKwargs = {eod_date_delta?: number | undefined, nasdaq_env: 'testing' | 'production'};

export type IdentifierUUIDPost = {display_name?: string | undefined, index_name: string, metric?: string | undefined, name: string, namespace?: string | undefined, num_days?: number | undefined, provider_kwargs?: (BloombergProviderKwargs | ReutersProviderKwargs | SecapiProviderKwargs | NasdaqProviderKwargs) | undefined, rounding_decimals?: number | undefined, rounding_type?: ('standard' | 'sigfig') | undefined, start_date?: string | undefined, ticker: string};

export type CreateApiIdentifierProviderArgs = {body: IdentifierUUIDPost};

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

export const createApiIdentifierProviderResponse = z.object({id: z.string().optional(), status: z.string().optional()});

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
};

/**
 * Create a new identifier for this provider
 * 
 * POST /identifier/{provider}
 */
export const createApiIdentifierProvider = async (args: CreateApiIdentifierProviderArgs, options?: CreateApiIdentifierProviderOptions) => {
const {baseUrl = "https://api.merqube.com", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/identifier/${encodeURIComponent(String(args.provider))}${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(createApiIdentifierProviderResponse, await res.json())
};