import {z} from 'zod'

export type GatewayCode = 'OK' | 'CANCELLED' | 'UNKNOWN' | 'INVALID_ARGUMENT' | 'DEADLINE_EXCEEDED' | 'NOT_FOUND' | 'ALREADY_EXISTS' | 'PERMISSION_DENIED' | 'UNAUTHENTICATED' | 'RESOURCE_EXHAUSTED' | 'FAILED_PRECONDITION' | 'ABORTED' | 'OUT_OF_RANGE' | 'UNIMPLEMENTED' | 'INTERNAL' | 'UNAVAILABLE' | 'DATA_LOSS';

export type GatewayStatus = {code?: GatewayCode | undefined, message?: string | undefined};

export type GatewayTrainingRunState = 'STATE_UNSPECIFIED' | 'PENDING_MATERIALIZATION' | 'READY' | 'FAILED' | 'EXPIRED';

export type GatewayTrainingRun = {name?: string | undefined, createTime?: string | undefined, updateTime?: string | undefined, createdBy?: string | undefined, baseModel?: string | undefined, loraRank?: number | undefined, status?: GatewayStatus | undefined, sourceTrainingSessionId?: string | undefined, state?: GatewayTrainingRunState | undefined};

export type CreateApiV1AccountsAccountIdTrainingRunsArgs = {account_id: string, body: GatewayTrainingRun};

export type CreateApiV1AccountsAccountIdTrainingRunsOptions = {baseUrl: string, BearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const gatewayCode = z.enum(["OK", "CANCELLED", "UNKNOWN", "INVALID_ARGUMENT", "DEADLINE_EXCEEDED", "NOT_FOUND", "ALREADY_EXISTS", "PERMISSION_DENIED", "UNAUTHENTICATED", "RESOURCE_EXHAUSTED", "FAILED_PRECONDITION", "ABORTED", "OUT_OF_RANGE", "UNIMPLEMENTED", "INTERNAL", "UNAVAILABLE", "DATA_LOSS"]);

export const gatewayStatus = z.object({code: gatewayCode.optional(), message: z.string().optional()});

export const gatewayTrainingRunState = z.enum(["STATE_UNSPECIFIED", "PENDING_MATERIALIZATION", "READY", "FAILED", "EXPIRED"]);

export const gatewayTrainingRun = z.object({name: z.string().optional(), createTime: z.string().optional(), updateTime: z.string().optional(), createdBy: z.string().optional(), baseModel: z.string().optional(), loraRank: z.number().int().optional(), status: gatewayStatus.optional(), sourceTrainingSessionId: z.string().optional(), state: gatewayTrainingRunState.optional()});

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
};

/**
 * Create a training run: the durable, account-owned model lineage for a
 * Tinker create_lora_training_client. A session may host many runs, and a run
 * may span sessions across resume.
 * 
 * POST /v1/accounts/{account_id}/trainingRuns
 */
export const createApiV1AccountsAccountIdTrainingRuns = async (args: CreateApiV1AccountsAccountIdTrainingRunsArgs, options: CreateApiV1AccountsAccountIdTrainingRunsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/accounts/${encodeURIComponent(String(args.account_id))}/trainingRuns${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(gatewayTrainingRun, await res.json())
};