import {z} from 'zod'

export type GetApiInsightsPatentTrendsArgs = {apply_end_time?: string | undefined, apply_start_time?: string | undefined, authority?: string | undefined, ipc?: string | undefined, keywords?: string | undefined, public_end_time?: string | undefined, public_start_time?: string | undefined, query_text?: string | undefined};

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

export const a001InsightsPatentTrendsPTItemData = z.object({year: z.string().optional(), total: z.number().int().optional(), grant_num: z.number().int().optional(), grant_rate: z.number().optional()});

export const a001InsightsPatentTrendsPatentTrendResponse = z.object({values: z.array(a001InsightsPatentTrendsPTItemData).optional()});

export const a001InsightsPatentTrendsResponse = z.object({data: z.array(a001InsightsPatentTrendsPatentTrendResponse).optional(), status: z.boolean(), error_msg: z.string().optional(), error_code: z.number().int()});

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
};

/**
 * A001 Application and Issued Trend (keywords & ipc Search & Query Search)
 * 
 * GET /insights/patent-trends
 */
export const getApiInsightsPatentTrends = async (args: GetApiInsightsPatentTrendsArgs, options?: GetApiInsightsPatentTrendsOptions) => {
const {baseUrl = "https://connect.patsnap.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.apply_end_time != null) query.append("apply_end_time", String(args.apply_end_time))
if (args.apply_start_time != null) query.append("apply_start_time", String(args.apply_start_time))
if (args.authority != null) query.append("authority", String(args.authority))
if (args.ipc != null) query.append("ipc", String(args.ipc))
if (args.keywords != null) query.append("keywords", String(args.keywords))
if (args.public_end_time != null) query.append("public_end_time", String(args.public_end_time))
if (args.public_start_time != null) query.append("public_start_time", String(args.public_start_time))
if (args.query_text != null) query.append("query_text", String(args.query_text))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/insights/patent-trends${query.size > 0 ? `?${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(a001InsightsPatentTrendsResponse, await res.json())
};