import {z} from 'zod'

export type GetApiCollectionsCollectionIdSettingsArgs = {collection_id: string};

export type GetApiCollectionsCollectionIdSettingsOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const guardrailsSettings = z.object({exception_message: z.string().optional(), show_violated_responses: z.boolean().optional(), guardrails_on_transcriptions: z.boolean().optional(), vision_guardrails_enabled: z.boolean().optional(), guardrails_vision_llm: z.string().optional(), column_redaction_config: z.array(z.array(z.string())).optional(), disallowed_regex_patterns: z.array(z.string()).optional(), presidio_labels_to_flag: z.array(z.string()).optional(), pii_labels_to_flag: z.array(z.string()).optional(), pii_detection_parse_action: z.enum(["allow", "redact", "fail"]).optional(), pii_detection_llm_input_action: z.enum(["allow", "redact", "fail"]).optional(), pii_detection_llm_output_action: z.enum(["allow", "redact", "fail"]).optional(), prompt_guard_labels_to_flag: z.array(z.string()).optional(), guardrails_labels_to_flag: z.array(z.string()).optional(), guardrails_llm: z.string().optional(), guardrails_safe_category: z.string().optional(), guardrails_entities: z.record(z.string(), z.string()).optional(), column_redaction_custom_entities_to_flag: z.array(z.string()).optional(), column_redaction_custom_entities: z.record(z.string(), z.string()).optional(), custom_pii_entities_to_flag: z.array(z.string()).optional(), custom_pii_entities: z.record(z.string(), z.string()).optional()});

export const collectionSettings = z.object({max_tokens_per_chunk: z.number().int().optional(), chunk_overlap_tokens: z.number().int().optional(), gen_doc_summaries: z.boolean().optional(), gen_doc_questions: z.boolean().optional(), audio_input_language: z.string().optional(), ocr_model: z.string().optional(), tesseract_lang: z.string().optional(), keep_tables_as_one_chunk: z.boolean().optional(), chunk_by_page: z.boolean().optional(), handwriting_check: z.boolean().optional(), ingest_mode: z.enum(["standard", "lite", "agent_only"]).optional(), follow_links: z.boolean().optional(), max_depth: z.number().int().optional(), max_documents: z.number().int().optional(), root_dir: z.string().optional(), copy_document: z.boolean().optional(), guardrails_settings: guardrailsSettings.optional(), expiry_timezone: z.string().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
};

/**
 * Fetches collection settings.
 * 
 * GET /collections/{collection_id}/settings
 */
export const getApiCollectionsCollectionIdSettings = async (args: GetApiCollectionsCollectionIdSettingsArgs, options?: GetApiCollectionsCollectionIdSettingsOptions) => {
const {baseUrl = "https://h2ogpte.genai.h2o.ai/api/v1", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/collections/${encodeURIComponent(String(args.collection_id))}/settings${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(collectionSettings, await res.json())
};