import { UniqueID } from "@repo/rdx-ddd";
import { Maybe, Result } from "@repo/rdx-utils";

import type { RelationshipInputDTO } from "../../common/relationships";
import { AssetCatalogError } from "../domain/asset-definition";
import { AssetRelationship } from "../domain/asset-relationship.aggregate";
import { AssetRelationshipValues } from "../domain/value-objects/asset-relationship-values.vo";

import type { IAssetRepository, InventoryContext } from "./asset.repository";

export class AssetRelationshipUseCases {
  constructor(private readonly repository: IAssetRepository) {}
  save(companyId: string, input: RelationshipInputDTO, actorId: string) {
    const company = UniqueID.create(companyId);
    const actor = UniqueID.create(actorId);
    if (!(company.isSuccess && actor.isSuccess)) {
      return Promise.resolve(Result.fail(new AssetCatalogError("INVALID_REQUEST")));
    }
    return this.repository.saveRelationship(company.data, (context) => {
      const mapped = mapRelationshipInput(input, company.data, context);
      if (!mapped.isSuccess) {
        return Result.fail(mapped.error);
      }
      const previous = context.relationships.find(
        (item) => item.active && item.values.key() === mapped.data.key()
      );
      if (previous) {
        return previous.values.notes === mapped.data.notes
          ? Result.ok(previous)
          : Result.fail(new AssetCatalogError("RELATIONSHIP_EXISTS"));
      }
      return AssetRelationship.create(
        company.data,
        mapped.data,
        actor.data,
        new Date().toISOString()
      );
    });
  }
  remove(companyId: string, id: string) {
    const company = UniqueID.create(companyId);
    const identity = UniqueID.create(id);
    if (!(company.isSuccess && identity.isSuccess)) {
      return Promise.resolve(Result.fail(new AssetCatalogError("INVALID_REQUEST")));
    }
    return this.repository.removeRelationship(company.data, identity.data);
  }
  end(companyId: string, id: string, actorId: string) {
    const company = UniqueID.create(companyId);
    const identity = UniqueID.create(id);
    const actor = UniqueID.create(actorId);
    if (!(company.isSuccess && identity.isSuccess && actor.isSuccess)) {
      return Promise.resolve(Result.fail(new AssetCatalogError("INVALID_REQUEST")));
    }
    return this.repository.saveRelationship(company.data, (context) => {
      const item = context.relationships.find((entry) => entry.id.equals(identity.data));
      return item
        ? item.end(actor.data, new Date().toISOString())
        : Result.fail(new AssetCatalogError("RELATIONSHIP_NOT_FOUND"));
    });
  }
}
export function mapRelationshipInput(
  input: RelationshipInputDTO,
  company: UniqueID,
  context: InventoryContext
) {
  if (
    ![input.sourceId, input.targetId].every((id) =>
      context.assets.some((asset) => asset.id.toPrimitive() === id)
    )
  ) {
    return Result.fail(new AssetCatalogError("ASSET_NOT_FOUND"));
  }
  const scope = Maybe.some(company);
  const type = context.catalog
    .visible(scope)
    .find((item) => item.id.toPrimitive() === input.typeId);
  if (!(type && type.values.data.kind === "relation" && context.catalog.active(type, scope))) {
    return Result.fail(new AssetCatalogError("RELATION_TYPE_UNAVAILABLE"));
  }
  return AssetRelationshipValues.create({
    ...input,
    name: type.values.data.name,
    inverseName: type.values.data.inverseName,
    symmetric: type.values.data.symmetric,
  });
}