import {z} from 'zod'

export type GetApiApiV1UsRulemakingCoverageOptions = {baseUrl?: string | undefined, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const sourceCoverage = z.object({name: z.string(), rowCounts: z.record(z.string(), z.unknown()).optional(), latestChange: z.string().nullable().optional(), lastRefreshAt: z.string().nullable().optional(), measuredAt: z.string().nullable().optional(), status: z.enum(["ok", "stale", "unmeasured"]).optional(), limitations: z.array(z.string()).optional()});

export const agendaEditionCoverage = z.object({editionId: z.string(), season: z.string().nullable().optional(), year: z.number().int().nullable().optional(), runDate: z.string().nullable().optional(), entryCount: z.number().int().nullable().optional()});

export const coverageResponse = z.object({processingTimeMs: z.number().optional(), creditsConsumed: z.number().int().optional(), sources: z.array(sourceCoverage), agendaEditions: z.array(agendaEditionCoverage), limitations: z.array(z.string())});

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
};

/**
 * What the rulemaking store holds (free)
 * 
 * GET /api/v1/us/rulemaking/coverage
 * 
 * Also accepts auth: ApiKeyHeader
 */
export const getApiApiV1UsRulemakingCoverage = async (options?: GetApiApiV1UsRulemakingCoverageOptions) => {
const {baseUrl = "https://api.vaquill.ai", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (ApiKeyAuth !== undefined) headers.set('authorization', `Bearer ${ApiKeyAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/us/rulemaking/coverage${query.size > 0 ? `?${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(coverageResponse, await res.json())
};