import {z} from 'zod'

export type AI373ExtractFeatureCnipaRequest = {category: string, task_id: string};

export type CreateApiAiSpecificationExtractFeatureCnipaArgs = {body: AI373ExtractFeatureCnipaRequest};

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

export const aI373ExtractFeatureCnipaTerm = z.object({name: z.string(), number: z.string().optional(), annotated: z.boolean().optional(), unique_id: z.string()});

export const aI373ExtractFeatureCnipaClaimFeature = z.object({feature: z.string().optional(), concepts: z.array(z.unknown()).optional(), feature_deleted: z.number().int().optional()});

export const aI373ExtractFeatureCnipaFeatureTreeBO = z.object({num: z.string().optional(), parent: z.string().optional(), simple_claim: z.string().optional(), claim_features: z.array(aI373ExtractFeatureCnipaClaimFeature).optional()});

export const aI373ExtractFeatureCnipaSpecificationFeatureResponse = z.object({terms: z.array(aI373ExtractFeatureCnipaTerm).optional(), feature_tree: z.array(aI373ExtractFeatureCnipaFeatureTreeBO).optional()});

export const aI373ExtractFeatureCnipaResponse = z.object({data: aI373ExtractFeatureCnipaSpecificationFeatureResponse.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
};

/**
 * AI37-3 Patent Specification Drafting (CNIPA) - Technical Feature Extraction
 * 
 * POST /ai/specification/extract-feature/cnipa
 */
export const createApiAiSpecificationExtractFeatureCnipa = async (args: CreateApiAiSpecificationExtractFeatureCnipaArgs, options?: CreateApiAiSpecificationExtractFeatureCnipaOptions) => {
const {baseUrl = "https://connect.patsnap.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/ai/specification/extract-feature/cnipa${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(aI373ExtractFeatureCnipaResponse, await res.json())
};