import {z} from 'zod'

export type GuardrailsSettings = {exception_message?: string | undefined, show_violated_responses?: boolean | undefined, guardrails_on_transcriptions?: boolean | undefined, vision_guardrails_enabled?: boolean | undefined, guardrails_vision_llm?: string | undefined, column_redaction_config?: Array<Array<string>> | undefined, disallowed_regex_patterns?: Array<string> | undefined, presidio_labels_to_flag?: Array<string> | undefined, pii_labels_to_flag?: Array<string> | undefined, pii_detection_parse_action?: ('allow' | 'redact' | 'fail') | undefined, pii_detection_llm_input_action?: ('allow' | 'redact' | 'fail') | undefined, pii_detection_llm_output_action?: ('allow' | 'redact' | 'fail') | undefined, prompt_guard_labels_to_flag?: Array<string> | undefined, guardrails_labels_to_flag?: Array<string> | undefined, guardrails_llm?: string | undefined, guardrails_safe_category?: string | undefined, guardrails_entities?: {[key: string]: string} | undefined, column_redaction_custom_entities_to_flag?: Array<string> | undefined, column_redaction_custom_entities?: {[key: string]: string} | undefined, custom_pii_entities_to_flag?: Array<string> | undefined, custom_pii_entities?: {[key: string]: string} | undefined};

export type ExtractorCreateRequest = {name: string, description: string, llm: string, schema: string, prompt?: string | undefined, pre_prompt_summary?: string | undefined, keep_intermediate_results?: boolean | undefined, system_prompt?: string | undefined, max_num_chunks?: number | undefined, vision?: string | undefined, vision_llm?: string | undefined, image_batch_image_prompt?: string | undefined, image_batch_final_prompt?: string | undefined, guardrails_settings?: GuardrailsSettings | undefined};

export type CreateApiExtractorsArgs = {body: ExtractorCreateRequest};

export type CreateApiExtractorsOptions = {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 extractor = z.object({name: z.string(), description: z.string(), llm: z.string().optional(), schema: z.string().optional(), prompt: z.string().optional(), pre_prompt_summary: z.string().optional(), keep_intermediate_results: z.boolean().optional(), system_prompt: z.string().optional(), max_num_chunks: z.number().int().optional(), vision: z.string().optional(), vision_llm: z.string().optional(), image_batch_image_prompt: z.string().optional(), image_batch_final_prompt: z.string().optional(), guardrails_settings: guardrailsSettings.optional(), id: z.string(), is_public: z.boolean(), created_at: 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
};

/**
 * Creates extractor.
 * 
 * POST /extractors
 */
export const createApiExtractors = async (args: CreateApiExtractorsArgs, options?: CreateApiExtractorsOptions) => {
const {baseUrl = "https://h2ogpte.genai.h2o.ai/api/v1", 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 = `${baseUrl.replace(/\/+$/, '')}/extractors${query.size > 0 ? `?${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(extractor, await res.json())
};