import {z} from 'zod'

export type PlanSuccessComparison = 'beat_baseline' | 'absolute_threshold';

export type SuccessCriterionEdit = {success_metric: string, success_comparison: PlanSuccessComparison, success_threshold: number, success_suite_id: string, success_rounds_required?: number | undefined};

export type FinetunePlanApproveRequest = {revision_hash: string, success_criterion?: (SuccessCriterionEdit | null) | undefined};

export type CreateApiV1ExperimentsExperimentIdFinetunePlansPlanIdApproveArgs = {experiment_id: string, plan_id: string, body: FinetunePlanApproveRequest};

export type CreateApiV1ExperimentsExperimentIdFinetunePlansPlanIdApproveOptions = {baseUrl: string, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const planSuccessComparison = z.enum(["beat_baseline", "absolute_threshold"]);

export const finetunePlanEnvelope = z.object({expires_at: z.string(), allow_synthetic_data: z.boolean().optional(), allow_eval_upload: z.boolean().optional(), allowed_base_models: z.array(z.string().min(1).max(200)).optional(), baseline_model_ids: z.array(z.string().min(1).max(200)).optional(), allow_preview_deployment: z.boolean().optional(), allow_deployment: z.boolean().optional(), success_metric: z.string().min(1).max(200).nullable().optional(), success_comparison: planSuccessComparison.nullable().optional(), success_threshold: z.number().gte(0.000001).lte(999999.999999).nullable().optional(), success_suite_id: z.string().nullable().optional(), success_rounds_required: z.number().int().gte(1).lte(10).optional()});

export const finetunePlanIntent = z.object({objective: z.string().min(1).max(4000), success_criteria: z.string().min(1).max(4000).nullable().optional(), baseline: z.string().min(1).max(4000).nullable().optional(), dataset_reasoning: z.string().min(1).max(4000).nullable().optional(), prose_constraints: z.string().min(1).max(4000).nullable().optional(), extra: z.record(z.string(), z.string().min(1).max(4000)).optional(), estimated_cost_usd: z.string().nullable().optional(), estimated_cost_low_usd: z.string().nullable().optional(), estimated_cost_high_usd: z.string().nullable().optional()});

export const finetunePlanQuoteBasisOutput = z.object({quote_model: z.string().min(1).max(200), estimated_gpu_minutes: z.string(), estimated_instance_type: z.string().min(1).max(64)});

export const finetunePlanResponse = z.object({id: z.string(), experiment_id: z.string(), revision: z.number().int(), revision_hash: z.string(), envelope: finetunePlanEnvelope, intent: finetunePlanIntent, quote: finetunePlanQuoteBasisOutput.nullable().optional(), is_current: z.boolean(), proposed_by: z.string(), proposed_at: z.string(), approved_by: z.string().nullable(), approved_at: z.string().nullable(), rejected_by: z.string().nullable(), rejected_at: 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
};

/**
 * Approve a proposed plan revision
 * 
 * POST /v1/experiments/{experiment_id}/finetune-plans/{plan_id}/approve
 * 
 * Also accepts auth: BearerAuth
 */
export const createApiV1ExperimentsExperimentIdFinetunePlansPlanIdApprove = async (args: CreateApiV1ExperimentsExperimentIdFinetunePlansPlanIdApproveArgs, options: CreateApiV1ExperimentsExperimentIdFinetunePlansPlanIdApproveOptions) => {
const {baseUrl, fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/experiments/${encodeURIComponent(String(args.experiment_id))}/finetune-plans/${encodeURIComponent(String(args.plan_id))}/approve${query.size > 0 ? `?${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(finetunePlanResponse, await res.json())
};