import {z} from 'zod'

export type CommonStandardObject = 'company' | 'contact' | 'deal' | 'event' | 'lead' | 'note' | 'task' | 'user';

export type MappableFieldType = {fieldName: string, objectName: CommonStandardObject};

export type CreateAccountFieldMappingRequestBody = {allow_connection_override_custom_fields: boolean, mappable_by_connection_field_list: Array<MappableFieldType>};

export type CreateApiFieldMappingConfigArgs = {'x-revert-api-token': string, body: CreateAccountFieldMappingRequestBody};

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

export const commonResponseStatus = z.enum(["ok", "error"]);

export const createAccountFieldMappingResponse = z.object({status: commonResponseStatus});

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
};

/**
 * Create field mappings config for an account
 * 
 * POST /field-mapping/config
 */
export const createApiFieldMappingConfig = async (args: CreateApiFieldMappingConfigArgs, options?: CreateApiFieldMappingConfigOptions) => {
const {baseUrl = "https://api.revert.dev", fetch: fetchFn = fetch} = options ?? {}

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

if (args['x-revert-api-token'] != null) headers.set("x-revert-api-token", String(args['x-revert-api-token']))

const url = `${baseUrl.replace(/\/+$/, '')}/field-mapping/config${query.size > 0 ? `?${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(createAccountFieldMappingResponse, await res.json())
};