import {z} from 'zod'

export type GetApiV1JobsJobIdArgs = {jobId: string};

export type GetApiV1JobsJobIdOptions = {baseUrl?: string | undefined, apiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const jobStatusResponse = z.object({jobId: z.string(), poweredBy: z.literal("On-Page.ai"), type: z.enum(["classify", "scan"]), status: z.enum(["queued", "waiting", "running", "processing", "completed", "failed", "cancelled"]), progress: z.number().int().gte(0).lte(100).nullable(), created_at: z.string(), started_at: z.string().nullable(), completed_at: z.string().nullable(), region: z.enum(["US", "CA", "UK", "AU", "NZ", "ES", "DE", "IT", "FR", "IE", "NL", "CH", "SE", "NO", "DK", "FI", "ZA", "MX", "BR", "CO", "IN", "SG", "MY", "JP", "KE", "AE", "HK", "null"]).nullable(), locale: z.string().nullable(), result: z.unknown(), error: z.object({code: z.string(), message: z.string()}).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
};

/**
 * Fetch lightweight job status and error state.
 * 
 * GET /v1/jobs/{jobId}
 */
export const getApiV1JobsJobId = async (args: GetApiV1JobsJobIdArgs, options?: GetApiV1JobsJobIdOptions) => {
const {baseUrl = "https://api.on-page.ai", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

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

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