import {z} from 'zod'

export type GetApiV1TrainingPipelinesArgs = {limit?: number | undefined, offset?: number | undefined};

export type GetApiV1TrainingPipelinesOptions = {baseUrl: string, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const trainingPipelineListItem = z.object({pipeline_id: z.string(), model_name: z.string().nullable().optional(), project_id: z.string().nullable().optional(), status: z.string(), status_message: z.string().nullable().optional(), estimated_total_usd: z.number().nullable().optional(), total_stage_count: z.number().int(), completed_stage_count: z.number().int(), active_stage_index: z.number().int().nullable().optional(), progress_percent: z.number().int(), paused_at: z.string().nullable().optional(), created_at: z.string(), updated_at: z.string()});

export const trainingPipelineListResponse = z.object({pipelines: z.array(trainingPipelineListItem), limit: z.number().int(), offset: 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
};

/**
 * List Training Pipelines
 * 
 * GET /v1/training-pipelines
 * 
 * Also accepts auth: BearerAuth
 */
export const getApiV1TrainingPipelines = async (args: GetApiV1TrainingPipelinesArgs, options: GetApiV1TrainingPipelinesOptions) => {
const {baseUrl, fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (args.limit != null) query.append("limit", String(args.limit))
if (args.offset != null) query.append("offset", String(args.offset))
if (ApiKeyAuth !== undefined) headers.set("X-API-Key", ApiKeyAuth)

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