import {z} from 'zod'

export type GetApiGuardrailsUiAddGuardrailSettingsOptions = {baseUrl: string, APIKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const piiEntityCategoryMap = z.object({category: z.string(), entities: z.array(z.string())});

export const guardrailUIAddGuardrailSettings = z.object({content_filter_settings: z.record(z.string(), z.unknown()).nullable().optional(), decision_model_providers: z.array(z.string()).optional(), pii_entity_categories: z.array(piiEntityCategoryMap), providers_without_directional_logging_only_scope: z.array(z.string()), supported_actions: z.array(z.string()), supported_entities: z.array(z.string()), supported_modes: z.array(z.string()), supported_modes_by_provider: z.record(z.string(), z.array(z.string()))});

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
};

/**
 * Get Guardrail Ui Settings
 * 
 * GET /guardrails/ui/add_guardrail_settings
 */
export const getApiGuardrailsUiAddGuardrailSettings = async (options: GetApiGuardrailsUiAddGuardrailSettingsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, APIKeyHeader} = options ?? {}

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

if (APIKeyHeader !== undefined) headers.set("x-litellm-api-key", APIKeyHeader)

const url = `${baseUrl.replace(/\/+$/, '')}/guardrails/ui/add_guardrail_settings${query.size > 0 ? `?${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(guardrailUIAddGuardrailSettings, await res.json())
};