import { DeploymentFilter, DeploymentFormats, SingletonDeployment, SingletonDeploymentV2 } from './types';
import { findDeployment } from './utils';
import {
  _TOKEN_CALLBACK_HANDLER_DEPLOYMENTS,
  _COMPAT_FALLBACK_HANDLER_DEPLOYMENTS,
  _EXTENSIBLE_FALLBACK_HANDLER_DEPLOYMENTS,
} from './deployments';

/**
 * Get the token callback handler deployment based on the provided filter.
 * @param {DeploymentFilter} [filter] - Optional filter to apply to the deployment search.
 * @returns {SingletonDeployment | undefined} - The found deployment or undefined if not found.
 */
export const getTokenCallbackHandlerDeployment = (filter?: DeploymentFilter): SingletonDeployment | undefined => {
  return findDeployment(filter, _TOKEN_CALLBACK_HANDLER_DEPLOYMENTS);
};

/**
 * Get the default callback handler deployment based on the provided filter.
 * Note that this is an alias to `getTokenCallbackHandlerDeployment` for API backwards compatibility.
 * @param {DeploymentFilter} [filter] - Optional filter to apply to the deployment search.
 * @returns {SingletonDeployment | undefined} - The found deployment or undefined if not found.
 */
export const getDefaultCallbackHandlerDeployment = getTokenCallbackHandlerDeployment;

/**
 * Get all default callback handler deployments based on the provided filter.
 * @param {DeploymentFilter} [filter] - Optional filter to apply to the deployment search.
 * @returns {SingletonDeploymentV2 | undefined} - The found deployments in version 2 format or undefined if not found.
 */
export const getTokenCallbackHandlerDeployments = (filter?: DeploymentFilter): SingletonDeploymentV2 | undefined => {
  return findDeployment(filter, _TOKEN_CALLBACK_HANDLER_DEPLOYMENTS, DeploymentFormats.MULTIPLE);
};

/**
 * Get all default callback handler deployments based on the provided filter.
 * Note that this is an alias to `getTokenCallbackHandlerDeployments` for API backwards compatibility.
 * @param {DeploymentFilter} [filter] - Optional filter to apply to the deployment search.
 * @returns {SingletonDeploymentV2 | undefined} - The found deployments in version 2 format or undefined if not found.
 */
export const getDefaultCallbackHandlerDeployments = getTokenCallbackHandlerDeployments;

/**
 * Get the compatibility fallback handler deployment based on the provided filter.
 * @param {DeploymentFilter} [filter] - Optional filter to apply to the deployment search.
 * @returns {SingletonDeployment | undefined} - The found deployment or undefined if not found.
 */
export const getCompatibilityFallbackHandlerDeployment = (
  filter?: DeploymentFilter,
): SingletonDeployment | undefined => {
  return findDeployment(filter, _COMPAT_FALLBACK_HANDLER_DEPLOYMENTS);
};

/**
 * Get all compatibility fallback handler deployments based on the provided filter.
 * @param {DeploymentFilter} [filter] - Optional filter to apply to the deployment search.
 * @returns {SingletonDeploymentV2 | undefined} - The found deployments in version 2 format or undefined if not found.
 */
export const getCompatibilityFallbackHandlerDeployments = (
  filter?: DeploymentFilter,
): SingletonDeploymentV2 | undefined => {
  return findDeployment(filter, _COMPAT_FALLBACK_HANDLER_DEPLOYMENTS, DeploymentFormats.MULTIPLE);
};

/**
 * Get the extensible fallback handler deployment based on the provided filter.
 * @param {DeploymentFilter} [filter] - Optional filter to apply to the deployment search.
 * @returns {SingletonDeployment | undefined} - The found deployment or undefined if not found.
 */
export const getExtensibleFallbackHandlerDeployment = (filter?: DeploymentFilter): SingletonDeployment | undefined => {
  return findDeployment(filter, _EXTENSIBLE_FALLBACK_HANDLER_DEPLOYMENTS);
};

/**
 * Get all extensible fallback handler deployments based on the provided filter.
 * @param {DeploymentFilter} [filter] - Optional filter to apply to the deployment search.
 * @returns {SingletonDeploymentV2 | undefined} - The found deployments in version 2 format or undefined if not found.
 */
export const getExtensibleFallbackHandlerDeployments = (
  filter?: DeploymentFilter,
): SingletonDeploymentV2 | undefined => {
  return findDeployment(filter, _EXTENSIBLE_FALLBACK_HANDLER_DEPLOYMENTS, DeploymentFormats.MULTIPLE);
};

/**
 * Get the fallback handler deployment based on the provided filter. This method is an alias for `getCompatibilityFallbackHandlerDeployment`.
 * Kept for backwards compatibility.
 * @param {DeploymentFilter} [filter] - Optional filter to apply to the deployment search.
 * @returns {SingletonDeployment | undefined} - The found deployment or undefined if not found.
 */
export const getFallbackHandlerDeployment = getCompatibilityFallbackHandlerDeployment;
// Leaving the comment here so it's not a part of the JSDoc
// Previously, the function code was this:
// // This is a sorted array (by preference)
// const fallbackHandlerDeployments: SingletonDeploymentJSON[] = [
//   CompatibilityFallbackHandler141,
//   CompatibilityFallbackHandler130,
//   DefaultCallbackHandler130,
// ];
// export const getFallbackHandlerDeployment = (filter?: DeploymentFilter): SingletonDeployment | undefined => {
//   return findDeployment(filter, fallbackHandlerDeployments);
// };
// The problem with the function is that there’s no possible filter that would make the function return the last element of the array
// (DefaultCallbackHandler130 ), since we only allow to filter by version, networks and released flag. The only possible way is to have
// the default callback handler deployed to a network where the compatibility fallback handler isn’t deployed, but we require the whole
// suite of the contracts be deployed to a network.
// Since we didn't want to enforce a preferred fallback handler on the deployments package level,
// we decided to alias it to getCompatibilityFallbackHandlerDeployment (previously returned value)