import {z} from 'zod'

export type GetApiV1EvaluatorsArgs = {kind?: ('model_judge' | 'deterministic' | null) | undefined, status?: ('active' | 'inactive' | 'archived' | null) | undefined, tag?: (string | null) | undefined, name_contains?: (string | null) | undefined, limit?: number | undefined, cursor?: (string | null) | undefined};

export type GetApiV1EvaluatorsOptions = {baseUrl: string, APIKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const evaluatorResponse = z.object({id: z.string(), organization_id: z.string(), name: z.string(), kind: z.string(), format: z.string(), description: z.string().nullable(), owner: z.string().nullable(), status: z.string(), config: z.record(z.string(), z.unknown()).optional(), prompt: z.string().nullable(), threshold: z.number().nullable(), severity: z.string(), judge_model_override: z.string().nullable(), tags: z.array(z.string()).optional(), created_by: z.string().nullable().optional(), created_at: z.string(), updated_at: z.string()});

export const cursorPageEvaluatorResponse = z.object({items: z.array(evaluatorResponse), next_cursor: z.string().nullable().optional(), has_more: z.boolean()});

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
};

/**
 * List evaluators
 * 
 * GET /v1/evaluators
 */
export const getApiV1Evaluators = async (args: GetApiV1EvaluatorsArgs, options: GetApiV1EvaluatorsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, APIKeyHeader} = options ?? {}

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

if (args.kind != null) query.append("kind", String(args.kind))
if (args.status != null) query.append("status", String(args.status))
if (args.tag != null) query.append("tag", String(args.tag))
if (args.name_contains != null) query.append("name_contains", String(args.name_contains))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.cursor != null) query.append("cursor", String(args.cursor))
if (APIKeyHeader !== undefined) headers.set("x-api-key", APIKeyHeader)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/evaluators${query.size > 0 ? `?${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(cursorPageEvaluatorResponse, await res.json())
};