import {z} from 'zod'

export type GetApiV1InstitutionsCikBeneficialOwnershipArgs = {cik: string, view?: string | undefined, limit?: number | undefined, offset?: number | undefined};

export type GetApiV1InstitutionsCikBeneficialOwnershipOptions = {baseUrl?: string | undefined, ApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const statedPurposeCategoryDto = z.object({token: z.string().nullable().optional(), name: z.string().nullable().optional(), quote: z.string().nullable().optional()});

export const statedPurposeDto = z.object({state: z.string().nullable().optional(), summary: z.string().nullable().optional(), categories: z.array(statedPurposeCategoryDto).nullable().optional()});

export const institutionBeneficialOwnershipStakeDto = z.object({ticker: z.string().nullable().optional(), currentTicker: z.string().nullable().optional(), companyName: z.string().nullable().optional(), filingType: z.string().nullable().optional(), isAmendment: z.boolean().optional(), eventDate: z.string().optional(), filingDate: z.string().optional(), accessionNumber: z.string().nullable().optional(), rules: z.array(z.string()).nullable().optional(), shares: z.number().int().optional(), filedShares: z.number().int().optional(), percentOfClass: z.number().nullable().optional(), changeShares: z.number().int().nullable().optional(), priorEventDate: z.string().nullable().optional(), splitUnresolved: z.boolean().optional(), hasCoverPage: z.boolean().optional(), status: z.string().nullable().optional(), delistedOn: z.string().nullable().optional(), purpose: statedPurposeDto.optional()});

export const pageMeta = z.object({limit: z.number().int().optional(), offset: z.number().int().optional(), count: z.number().int().optional(), hasMore: z.boolean().optional(), total: z.number().int().nullable().optional()});

export const institutionBeneficialOwnershipResponse = z.object({name: z.string().nullable().optional(), cik: z.string().nullable().optional(), view: z.string().nullable().optional(), hiddenCount: z.number().int().optional(), note: z.string().nullable().optional(), data: z.array(institutionBeneficialOwnershipStakeDto).nullable().optional(), meta: pageMeta.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
};

/**
 * An institution's Schedule 13D and 13G stakes: its latest 13D or 13G on each listed security
 * it ever disclosed, held stakes first and newest event first, with the event and filing
 * dates, the shares (restated onto today's split basis) and percent of class, the change since
 * the filer's previous filing on that security, a 13D's Item 4 purpose where read, and a
 * status: current; unconfirmed (no filing in 24 months; a 13D or 13G stays in force until
 * amended, so the stake is kept and never assumed sold); below_threshold (the latest filing
 * reports under 5%, the amendment that ends the filer's duty to amend, not necessarily the
 * holding); exited (no shares); or security_retired (the issuer no longer trades in the US).
 * The default view lists current and unconfirmed stakes; view=all adds the rest. These are
 * event-dated 5% stakes, never a quarter-end portfolio: the 13F book is under
 * v1/institutions/{cik}/portfolio. A filer that files only 13D or 13G resolves by CIK like any
 * other.
 * 
 * GET /v1/institutions/{cik}/beneficial-ownership
 */
export const getApiV1InstitutionsCikBeneficialOwnership = async (args: GetApiV1InstitutionsCikBeneficialOwnershipArgs, options?: GetApiV1InstitutionsCikBeneficialOwnershipOptions) => {
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.view != null) query.append("view", String(args.view))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.offset != null) query.append("offset", String(args.offset))
if (ApiKey !== undefined) headers.set('authorization', `Bearer ${ApiKey}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/institutions/${encodeURIComponent(String(args.cik))}/beneficial-ownership${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(institutionBeneficialOwnershipResponse, await res.json())
};