import {z} from 'zod'

export type GetApiV1ModelsArgs = {scope?: ('user' | 'organization') | undefined, name?: (string | null) | undefined, short_id?: (string | null) | undefined};

export type GetApiV1ModelsOptions = {baseUrl: string, BearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const iD = z.union([z.string(), z.string()]);

export const jsonValue = z.unknown();

export const modelResponse = z.object({id: iD, short_id: z.string(), name: z.string(), user_id: z.string(), model_type: z.enum(["training", "custom_training", "reasoning", "sequence_reasoning"]), created_at: z.string().nullable().optional(), hyperparameters: z.record(z.string(), jsonValue).nullable().optional(), validation_metrics: z.record(z.string(), z.number()).nullable().optional(), source_tables: z.array(z.string()).optional()});

export const listModelsResponse = z.object({models: z.array(modelResponse)});

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 Models
 * 
 * GET /v1/models
 */
export const getApiV1Models = async (args: GetApiV1ModelsArgs, options: GetApiV1ModelsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

if (args.scope != null) query.append("scope", String(args.scope))
if (args.name != null) query.append("name", String(args.name))
if (args.short_id != null) query.append("short_id", String(args.short_id))
if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

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