import {z} from 'zod'

export type GetApiV1ProjectsProjectIdVersionsVersionIdArgs = {project_id: string, version_id: string};

export type GetApiV1ProjectsProjectIdVersionsVersionIdOptions = {baseUrl: string, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const projectVersionStatus = z.enum(["current", "frozen", "abandoned"]);

export const championRef = z.object({training_job_id: z.string().nullable().optional(), base_model: z.string().nullable().optional()});

export const projectVersionResponse = z.object({id: z.string(), project_id: z.string(), team_id: z.string(), version_number: z.number().int(), status: projectVersionStatus, objective: z.string().nullable(), carryover_summary: z.string(), champion: championRef.nullable(), created_by: z.string(), closed_by: z.string().nullable(), closed_at: z.string().nullable(), created_at: z.string()});

export const manifestVersionRef = z.object({id: z.string(), number: z.number().int(), objective: z.string().nullable().optional()});

export const manifestTrainingJob = z.object({id: z.string(), model_name: z.string().nullable().optional(), version_number: z.string(), base_model: z.string(), status: z.string(), deployable: z.boolean(), not_deployable_reason: z.string().nullable().optional()});

export const manifestDataset = z.object({id: z.string(), name: z.string(), version_number: z.string()});

export const experimentStage = z.enum(["scoping", "preparing_data", "training", "evaluating", "complete", "blocked", "cancelled"]);

export const manifestExperiment = z.object({id: z.string(), title: z.string().nullable().optional(), stage: experimentStage});

export const carryoverManifestPayload = z.object({schema_version: z.number().int(), version: manifestVersionRef, training_jobs: z.array(manifestTrainingJob).optional(), datasets: z.array(manifestDataset).optional(), experiments: z.array(manifestExperiment).optional(), champion: championRef.nullable().optional()});

export const projectVersionDetailResponse = z.object({version: projectVersionResponse, manifest: carryoverManifestPayload.nullable().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
};

/**
 * Read one milestone version
 * 
 * GET /v1/projects/{project_id}/versions/{version_id}
 * 
 * Also accepts auth: BearerAuth
 */
export const getApiV1ProjectsProjectIdVersionsVersionId = async (args: GetApiV1ProjectsProjectIdVersionsVersionIdArgs, options: GetApiV1ProjectsProjectIdVersionsVersionIdOptions) => {
const {baseUrl, fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/projects/${encodeURIComponent(String(args.project_id))}/versions/${encodeURIComponent(String(args.version_id))}${query.size > 0 ? `?${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(projectVersionDetailResponse, await res.json())
};