import {z} from 'zod'

export type GetApiV1RetrieversRetrieverIdArgs = {retriever_id: string};

export type GetApiV1RetrieversRetrieverIdOptions = {baseUrl?: string | undefined, BearerAuth?: string | undefined, NamespaceHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const stageType = z.enum(["filter", "sort", "reduce", "apply", "enrich"]);

export const stageConfigOutput = z.object({stage_name: z.string().min(1), stage_type: stageType.nullable().optional(), config: z.record(z.string(), z.unknown()), batch_size: z.string().nullable().optional(), description: z.string().nullable().optional(), on_error: z.string().nullable().optional(), output_alias: z.string().nullable().optional(), parameters: z.record(z.string(), z.unknown())});

export const retrieverInputSchemaFieldType = z.enum(["string", "number", "integer", "float", "boolean", "object", "array", "date", "datetime", "text", "image", "audio", "video", "pdf", "excel", "document_reference"]);

export const retrieverInputSchemaFieldOutput: z.ZodType<RetrieverInputSchemaFieldOutput> = z.object({type: retrieverInputSchemaFieldType, default: z.unknown(), items: z.lazy(() => retrieverInputSchemaFieldOutput.nullable().optional()), properties: z.record(z.string(), z.lazy(() => retrieverInputSchemaFieldOutput)).nullable().optional(), examples: z.array(z.unknown()).nullable().optional(), description: z.string().nullable().optional(), enum: z.array(z.unknown()).nullable().optional(), required: z.boolean().nullable().optional()}).and(z.record(z.string(), z.unknown()));

export const budgetLimits = z.object({max_credits: z.number().gte(0).nullable().optional(), max_time_ms: z.number().int().gte(0).nullable().optional()});

export const featureAddress = z.object({scheme: z.string().optional(), extractor: z.string(), version: z.string(), output: z.string().nullable().optional()});

export const retrieverModelOutput = z.object({retriever_id: z.string().optional(), retriever_name: z.string().min(1), description: z.string().nullable().optional(), collection_ids: z.array(z.string()).optional(), stages: z.array(stageConfigOutput), input_schema: z.record(z.string(), retrieverInputSchemaFieldOutput).optional(), budget_limits: budgetLimits.optional(), feature_dependencies: z.array(featureAddress).nullable().optional(), tags: z.array(z.string()).optional(), metadata: z.record(z.string(), z.unknown()).optional(), display_config: z.record(z.string(), z.unknown()).nullable().optional(), version: z.number().int().gte(1).optional(), created_at: z.string().optional(), updated_at: z.string().optional(), created_by: z.string().nullable().optional(), updated_by: z.string().nullable().optional(), is_published: z.boolean().optional(), marketplace_listing_id: z.string().nullable().optional(), fusion: z.string().nullable(), collection_identifiers: 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 Retriever
 * 
 * GET /v1/retrievers/{retriever_id}
 */
export const getApiV1RetrieversRetrieverId = async (args: GetApiV1RetrieversRetrieverIdArgs, options?: GetApiV1RetrieversRetrieverIdOptions) => {
const {baseUrl = "https://api.mixpeek.com", fetch: fetchFn = fetch, BearerAuth, NamespaceHeader} = options ?? {}

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

if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)
if (NamespaceHeader !== undefined) headers.set("X-Namespace", NamespaceHeader)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/retrievers/${encodeURIComponent(String(args.retriever_id))}${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(retrieverModelOutput, await res.json())
};