import {z} from 'zod'

export type GetApiV1ResearchTaskIdArgs = {task_id: string};

export type GetApiV1ResearchTaskIdOptions = {baseUrl?: string | undefined, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const researchTaskStatus = z.enum(["queued", "running", "completed", "failed", "cancelled"]);

export const researchTaskInput = z.object({input: z.string(), research_effort: z.enum(["lite", "standard", "deep", "exhaustive", "frontier"]), background: z.boolean(), output_schema: z.record(z.string(), z.unknown()).nullable(), source_control: z.object({}).nullable(), type: z.literal("research")});

export const researchOutput = z.object({output: z.object({content: z.union([z.string(), z.record(z.string(), z.unknown())]), content_type: z.enum(["text", "object"]), sources: z.array(z.object({url: z.string(), title: z.string().optional(), snippets: z.array(z.string()).optional()}))}), warnings: z.array(z.string())});

export const researchTaskDetail = z.object({id: z.string(), task_type: z.literal("research"), status: researchTaskStatus, created_at: z.string(), updated_at: z.string().nullable(), completed_at: z.string().nullable(), error: z.string().nullable(), input: researchTaskInput, result: researchOutput.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 the status or result of a background research task
 * 
 * GET /v1/research/{task_id}
 */
export const getApiV1ResearchTaskId = async (args: GetApiV1ResearchTaskIdArgs, options?: GetApiV1ResearchTaskIdOptions) => {
const {baseUrl = "https://api.you.com", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (ApiKeyAuth !== undefined) headers.set("X-API-Key", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/research/${encodeURIComponent(String(args.task_id))}${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(researchTaskDetail, await res.json())
};