import {z} from 'zod'

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

export const citationReceipt = z.object({canonical_url: z.string().optional(), citation_policy: z.record(z.string(), z.unknown()).optional(), citation_snippet: z.string().optional(), claim: z.string().optional(), claim_anchor: z.string().optional(), digest: z.string().optional(), evidence_matrix: z.array(z.record(z.string(), z.unknown())).optional(), evidence_urls: z.array(z.string()).optional(), html_selector: z.string().optional(), json_url: z.string().optional(), name: z.string().optional(), query_variants: z.array(z.string()).optional(), receipt_id: z.string().optional(), receipt_json_url: z.string().optional(), receipt_markdown_url: z.string().optional(), receipt_url: z.string().optional(), recommended_citation: z.string().optional(), schema: z.string().optional(), search_intent: z.string().optional(), verification_steps: z.array(z.string()).optional()});

export const citationReceipts = z.object({canonical_answer_graph: z.string().optional(), description: z.string().optional(), generated_at: z.string().optional(), geo_manifest: z.string().optional(), name: z.string().optional(), receipt_count: z.number().int().optional(), receipts: z.array(citationReceipt).optional(), schema: z.string().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
};

/**
 * Retrieve citation receipts through the API
 * 
 * GET /api/geo/citation-receipts.json
 */
export const getApiApiGeoCitationReceiptsJson = async (options?: GetApiApiGeoCitationReceiptsJsonOptions) => {
const {baseUrl = "https://ontarioprotocol.com", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/geo/citation-receipts.json${query.size > 0 ? `?${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(citationReceipts, await res.json())
};