import {z} from 'zod'

export type ProcessingPreset = 'full' | 'text_and_tables' | 'layout_only' | 'existing_text' | 'disabled';

export type TextExtractionMode = 'auto' | 'ocr' | 'vlm' | 'embedded' | 'none';

export type PageProcessingOptions = {text_extraction?: TextExtractionMode | undefined, detect_layout?: boolean | undefined, extract_tables?: boolean | undefined, classify_pages?: boolean | undefined, classify_visuals?: boolean | undefined, transcribe_visuals?: boolean | undefined, describe_visuals?: boolean | undefined, generate_page_descriptions?: boolean | undefined, process_schematics?: boolean | undefined, aggregate_viewboxes?: boolean | undefined, defer_table_refinement?: boolean | undefined, defer_component_descriptions?: boolean | undefined, defer_page_descriptions?: boolean | undefined};

export type KnowledgeBaseProcessingSettingsRequest = {processing_preset?: (ProcessingPreset | null) | undefined, page_processing_options?: (PageProcessingOptions | null) | undefined};

export type UpdateApiApiV0KnowledgeBasesKbIdProcessingSettingsArgs = {kb_id: string, body: KnowledgeBaseProcessingSettingsRequest};

export type UpdateApiApiV0KnowledgeBasesKbIdProcessingSettingsOptions = {baseUrl: string, HTTPBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const processingPreset = z.enum(["full", "text_and_tables", "layout_only", "existing_text", "disabled"]);

export const textExtractionMode = z.enum(["auto", "ocr", "vlm", "embedded", "none"]);

export const pageProcessingOptions = z.object({text_extraction: textExtractionMode.optional(), detect_layout: z.boolean().optional(), extract_tables: z.boolean().optional(), classify_pages: z.boolean().optional(), classify_visuals: z.boolean().optional(), transcribe_visuals: z.boolean().optional(), describe_visuals: z.boolean().optional(), generate_page_descriptions: z.boolean().optional(), process_schematics: z.boolean().optional(), aggregate_viewboxes: z.boolean().optional(), defer_table_refinement: z.boolean().optional(), defer_component_descriptions: z.boolean().optional(), defer_page_descriptions: z.boolean().optional()});

export const knowledgeBaseProcessingSettingsResponse = z.object({processing_preset: processingPreset.nullable(), page_processing_options: pageProcessingOptions});

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
};

/**
 * Replace knowledge-base processing settings
 * 
 * PUT /api/v0/knowledge-bases/{kb_id}/processing-settings
 */
export const updateApiApiV0KnowledgeBasesKbIdProcessingSettings = async (args: UpdateApiApiV0KnowledgeBasesKbIdProcessingSettingsArgs, options: UpdateApiApiV0KnowledgeBasesKbIdProcessingSettingsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/v0/knowledge-bases/${encodeURIComponent(String(args.kb_id))}/processing-settings${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "PUT", 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(knowledgeBaseProcessingSettingsResponse, await res.json())
};