import {z} from 'zod'

export type GetApiCatalogsCatalogFactsNameArgs = {catalog: string, name: string, environment?: string | undefined};

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

export const catalogFact = z.object({body: z.unknown(), confidence: z.enum(["confirmed", "heuristic", "inferred"]), created_at: z.string(), name: z.string(), object: z.string(), scope: z.enum(["catalog", "namespace", "table", "column", "metric"]), source: z.string().optional(), statement: z.string(), updated_at: z.string()});

export const describeCatalogFactResponse = z.object({$schema: z.string().optional(), environment: z.string(), fact: catalogFact});

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
};

/**
 * Describe a catalog fact
 * 
 * GET /catalogs/{catalog}/facts/{name}
 * 
 * Also accepts auth: APIKeyAuth
 */
export const getApiCatalogsCatalogFactsName = async (args: GetApiCatalogsCatalogFactsNameArgs, options?: GetApiCatalogsCatalogFactsNameOptions) => {
const {baseUrl = "https://api.tower.dev/v1", fetch: fetchFn = fetch, AccessTokenAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/catalogs/${encodeURIComponent(String(args.catalog))}/facts/${encodeURIComponent(String(args.name))}${query.size > 0 ? `?${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(describeCatalogFactResponse, await res.json())
};