import {z} from 'zod'

export type GetApiV1InstitutionsArgs = {query?: string | undefined, limit?: number | undefined, holderTypes?: string | undefined};

export type GetApiV1InstitutionsOptions = {baseUrl?: string | undefined, ApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const institutionDto = z.object({name: z.string().nullable().optional(), cik: z.string().nullable().optional(), latestReportDate: z.string().nullable().optional(), reportedAum: z.number().int().nullable().optional(), positionCount: z.number().int().nullable().optional(), city: z.string().nullable().optional(), stateOrCountry: z.string().nullable().optional(), holderType: z.string().nullable().optional()});

export const institutionSearchMeta = z.object({limit: z.number().int().optional(), count: z.number().int().optional(), totalMatches: z.number().int().optional(), hasMore: z.boolean().optional()});

export const institutionSearchResponse = z.object({data: z.array(institutionDto).nullable().optional(), meta: institutionSearchMeta.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
};

/**
 * Search the tracked 13F filer set by name or SEC CIK. Every punctuation-independent
 * query word is required first; the search broadens to any word only when no strict
 * row matches. CIK-prefix matches and verified flagship aliases are included.
 * Results rank recently-active, larger filers first and include their latest 13F
 * report date, published tracked portfolio value and position count so namesakes can be
 * distinguished. The legacy reportedAum field normally uses report-date closing prices,
 * may fall back to filer values, and can include zero for unavailable valuations.
 * The returned CIK is the identifier every v1/institutions/{cik}/* endpoint accepts;
 * meta reports the total tracked match count so truncation is visible. Each filer carries
 * its entity type from regulatory records, never from its name.
 * 
 * GET /v1/institutions
 */
export const getApiV1Institutions = async (args: GetApiV1InstitutionsArgs, options?: GetApiV1InstitutionsOptions) => {
const {baseUrl = "https://api.equibles.com", fetch: fetchFn = fetch, ApiKey} = options ?? {}

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

if (args.query != null) query.append("query", String(args.query))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.holderTypes != null) query.append("holderTypes", String(args.holderTypes))
if (ApiKey !== undefined) headers.set('authorization', `Bearer ${ApiKey}`)

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