import {z} from 'zod'

export type GetApiV1FndStocksTickerRiskFactorsDiffArgs = {ticker: string};

export type GetApiV1FndStocksTickerRiskFactorsDiffOptions = {baseUrl?: string | undefined, ApiKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const filingRef = z.object({accession: z.string().optional(), form: z.string().optional(), filed_at: z.string().optional(), period_end: z.string().optional()});

export const diffPair = z.object({before: z.string().optional(), after: z.string().optional()});

export const sectionDiffStats = z.object({before_paragraphs: z.number().int().optional(), after_paragraphs: z.number().int().optional(), unchanged_count: z.number().int().optional(), added_count: z.number().int().optional(), removed_count: z.number().int().optional(), modified_count: z.number().int().optional()});

export const sectionDiff = z.object({added: z.array(z.string()).optional(), removed: z.array(z.string()).optional(), modified: z.array(diffPair).optional(), stats: sectionDiffStats.optional()});

export const riskFactorsDiff = z.object({ticker: z.string().optional(), cik: z.string().optional(), current: filingRef.optional(), previous: filingRef.optional(), diff: sectionDiff.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
};

/**
 * Year-over-year risk-factor diff
 * 
 * GET /v1/fnd/stocks/{ticker}/risk-factors-diff
 * 
 * Also accepts auth: ApiKeyQuery
 */
export const getApiV1FndStocksTickerRiskFactorsDiff = async (args: GetApiV1FndStocksTickerRiskFactorsDiffArgs, options?: GetApiV1FndStocksTickerRiskFactorsDiffOptions) => {
const {baseUrl = "https://api.sifting.io", fetch: fetchFn = fetch, ApiKeyHeader} = options ?? {}

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

if (ApiKeyHeader !== undefined) headers.set("X-API-Key", ApiKeyHeader)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/fnd/stocks/${encodeURIComponent(String(args.ticker))}/risk-factors-diff${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

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

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