import {z} from 'zod'

export type GetApiApiV1CcaaStatsArgs = {'If-None-Match'?: string | undefined};

export type GetApiApiV1CcaaStatsOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const ccaaStatsRow = z.object({award_procedures_count: z.number().int().gte(0), award_procedures_count_status: z.enum(["public_projection_v3", "projection_unavailable"]), contracts_count: z.number().int().gte(0), contracts_count_status: z.literal("award_procedures_per_corporate_supplier_not_unique_contracts"), contracts_total_eur: z.unknown(), contracts_total_eur_status: z.literal("withheld_no_typed_rollup"), name: z.string(), total: z.number().int().gte(0), active: z.number().int().gte(0), extinct: z.number().int().gte(0), concurso: z.number().int().gte(0), total_capital_eur: z.number().int().gte(0), provinces: z.array(z.string())});

export const ccaaStatsResponse = z.object({count: z.number().int().gte(0), ccaa: z.array(ccaaStatsRow), source: z.string(), updated: z.string().nullable()});

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
};

/**
 * Get CCAA aggregates through the suffix-less legacy alias
 * 
 * GET /api/v1/ccaa/stats
 */
export const getApiApiV1CcaaStats = async (args: GetApiApiV1CcaaStatsArgs, options?: GetApiApiV1CcaaStatsOptions) => {
const {baseUrl = "https://openmercantil.es", fetch: fetchFn = fetch} = options ?? {}

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

if (args['If-None-Match'] != null) headers.set("If-None-Match", String(args['If-None-Match']))

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