import {z} from 'zod'

export type FieldWrapper = {empty?: boolean | undefined};

export type EnhancePostRequest = {type?: ('Person' | 'Organization') | undefined, id?: string | undefined, name?: FieldWrapper | undefined, url?: FieldWrapper | undefined, location?: string | undefined, ip?: string | undefined, phone?: string | undefined, description?: string | undefined, email?: FieldWrapper | undefined, employer?: string | undefined, title?: string | undefined, school?: string | undefined, customId?: string | undefined, size?: number | undefined, threshold?: number | undefined, refresh?: boolean | undefined, search?: boolean | undefined, nonCanonicalFacts?: boolean | undefined, jsonmode?: (' ' | 'extended') | undefined, filter?: string | undefined, filterExclude?: string | undefined};

export type CreateApiKgV3EnhanceArgs = {body: EnhancePostRequest};

export type CreateApiKgV3EnhanceOptions = {baseUrl?: string | undefined, tokenscheme?: string | undefined, fetch?: typeof fetch | undefined};

export const fieldWrapper = z.object({empty: z.boolean().optional()});

export const requestContext: z.ZodType<RequestContext> = z.object({query: z.union([z.object({type: z.string().optional(), location: z.string().optional(), ip: z.string().optional(), phone: z.string().optional(), description: z.string().optional()}), z.object({type: z.string().optional(), location: z.string().optional(), ip: z.string().optional(), phone: z.string().optional(), description: z.string().optional(), email: fieldWrapper.optional(), employer: z.string().optional(), title: z.string().optional(), school: z.string().optional()})]).optional(), query_ctx: z.record(z.string(), z.object({})).optional(), threshold: z.lazy(() => requestContext.optional()), customId: z.lazy(() => requestContext.optional())});

export const objectNode = z.object({});

export const refreshDebugInformation = z.object({url: z.string().optional(), hasResult: z.boolean().optional(), lastCrawlTime: z.number().int().optional(), message: z.string().optional()});

export const delta = z.object({});

export const data = z.object({score: z.number().optional(), entity: objectNode.optional(), errors: z.array(z.string()).optional(), refreshInfo: z.record(z.string(), refreshDebugInformation).optional(), refreshDelta: delta.optional(), entity_ctx: z.record(z.string(), z.object({})).optional()});

export const searchCandidate = z.object({mlScore: z.number().optional(), baseMlScore: z.number().optional(), debugInfo: refreshDebugInformation.optional()});

export const enhanceResponse = z.object({version: z.number().int().optional(), hits: z.number().int().optional(), kgversion: z.string().optional(), request_ctx: requestContext.optional(), data: z.array(data).optional(), errors: z.array(z.string()).optional(), searchInfo: z.record(z.string(), searchCandidate).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
};

/**
 * Enhance
 * 
 * POST /kg/v3/enhance
 */
export const createApiKgV3Enhance = async (args: CreateApiKgV3EnhanceArgs, options?: CreateApiKgV3EnhanceOptions) => {
const {baseUrl = "https://llm.diffbot.com/api/v1/web_search", fetch: fetchFn = fetch, tokenscheme} = options ?? {}

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

if (tokenscheme !== undefined) query.set("token", tokenscheme)

const url = `${baseUrl.replace(/\/+$/, '')}/kg/v3/enhance${query.size > 0 ? `?${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(enhanceResponse, await res.json())
};