import {z} from 'zod'

export type ConditionOperator = 'eq' | 'not_eq' | 'gt' | 'gte' | 'lt' | 'lte' | 'in' | 'not_in' | 'like' | 'contains' | 'starts_with' | 'not_like' | 'regex';

export type SearchFilterCondition = {key: string, value: string, operator: ConditionOperator};

export type SearchFilterInput = {all?: (Array<SearchFilterInput | SearchFilterCondition> | null) | undefined, any?: (Array<SearchFilterInput | SearchFilterCondition> | null) | undefined, none?: (Array<SearchFilterInput | SearchFilterCondition> | null) | undefined};

export type RerankConfig = {model?: string | undefined, with_metadata?: (boolean | Array<string>) | undefined, top_k?: (number | null) | undefined};

export type AgenticSearchConfig = {max_rounds?: number | undefined, queries_per_round?: number | undefined, strict_top_k?: boolean | undefined, media_content?: ('auto' | 'never' | 'always') | undefined, instructions?: (string | null) | undefined, verbose?: boolean | undefined};

export type SearchDistinct = {field: string, per_value?: number | undefined};

export type StoreChunkSearchOptions = {score_threshold?: number | undefined, rewrite_query?: boolean | undefined, rerank?: (boolean | RerankConfig | null) | undefined, agentic?: (boolean | AgenticSearchConfig | null) | undefined, lsf?: (boolean | null) | undefined, return_metadata?: boolean | undefined, distinct?: (SearchDistinct | null) | undefined};

export type MetadataFacetsParams = {store_identifiers: Array<string | string>, filters?: (SearchFilterInput | SearchFilterCondition | Array<SearchFilterInput | SearchFilterCondition> | null) | undefined, file_ids?: (Array<unknown> | Array<string> | null) | undefined, query?: (string | null) | undefined, top_k?: number | undefined, search_options?: StoreChunkSearchOptions | undefined, facets?: (Array<string> | null) | undefined, max_fields?: number | undefined, max_values_per_field?: number | undefined, max_files?: number | undefined};

export type CreateApiV1StoresMetadataFacetsArgs = {body: MetadataFacetsParams};

export type CreateApiV1StoresMetadataFacetsOptions = {baseUrl?: string | undefined, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const metadataFacets = z.object({facets: z.record(z.string(), z.record(z.string(), z.unknown()))});

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 metadata facets
 * 
 * POST /v1/stores/metadata-facets
 */
export const createApiV1StoresMetadataFacets = async (args: CreateApiV1StoresMetadataFacetsArgs, options?: CreateApiV1StoresMetadataFacetsOptions) => {
const {baseUrl = "https://api.mixedbread.com", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/stores/metadata-facets${query.size > 0 ? `?${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(metadataFacets, await res.json())
};