import {z} from 'zod'

export type GetApiV1FetchAgentArgs = {agent_id: number};

export type GetApiV1FetchAgentOptions = {baseUrl: string, HTTPBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const agentType = z.enum(["compliance", "datatable_match", "fraud", "signature", "document_rename", "splitting", "cross_split"]);

export const agentStatus = z.enum(["active", "inactive"]);

export const agentFields = z.enum(["label", "code", "unit_price", "total_price", "quantity", "invoice_date", "invoice_amount", "invoice_number"]);

export const agentApiFieldMapping = z.object({field_id: z.number().int(), agent_field: agentFields});

export const agentApiDatatableRef = z.object({document_id: z.number().int().nullable().optional()});

export const agentApiOut = z.object({id: z.number().int(), type: agentType, name: z.string().nullable().optional(), status: agentStatus, is_locked: z.boolean().nullable().optional(), is_show_hint: z.boolean().nullable().optional(), template_ids: z.array(z.number().int()).optional(), settings: z.record(z.string(), z.unknown()).nullable().optional(), linked_field_ids: z.array(z.number().int()).optional(), field_mapping: z.array(agentApiFieldMapping).optional(), datatable_ref: agentApiDatatableRef.nullable().optional(), source_agent_id: z.number().int().nullable().optional(), source_agent_name: z.string().nullable().optional(), activation_error: z.string().nullable().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
};

/**
 * Fetch Agent
 * 
 * GET /v1/fetch_agent/
 */
export const getApiV1FetchAgent = async (args: GetApiV1FetchAgentArgs, options: GetApiV1FetchAgentOptions) => {
const {baseUrl, fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

if (args.agent_id != null) query.append("agent_id", String(args.agent_id))
if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/fetch_agent/${query.size > 0 ? `?${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(agentApiOut, await res.json())
};