/**
 * This file is part of the NocoBase (R) project.
 * Copyright (c) 2020-2024 NocoBase Co., Ltd.
 * Authors: NocoBase Team.
 *
 * This project is dual-licensed under AGPL-3.0 and NocoBase Commercial License.
 * For more information, please refer to: https://www.nocobase.com/agreement.
 */

import { Application, CollectionManager, CollectionTemplate, Collection } from '@nocobase/client';
import collections from '../collections.json';

describe('CollectionManager', () => {
  let collectionManager: CollectionManager;

  beforeEach(() => {
    const app = new Application({});
    collectionManager = app.getCollectionManager();
  });
  describe('constructor', () => {
    it('should initialize with empty collections', () => {
      expect(collectionManager.collectionInstancesMap).toEqual({});
      expect(collectionManager.collectionInstancesArr).toEqual([]);
    });
  });

  describe('addCollections', () => {
    it('should add new collections', () => {
      const collections = [{ name: 'test' }];
      collectionManager.addCollections(collections as any[]);
      expect(collectionManager.collectionInstancesArr.length).toBe(1);
      expect(collectionManager.collectionInstancesMap['test']).instanceOf(Collection);
    });

    it('should merge with existing collections', () => {
      const initialCollections = [{ name: 'initial' }];
      const additionalCollections = [{ name: 'additional' }];
      collectionManager.addCollections(initialCollections as any[]);
      collectionManager.addCollections(additionalCollections as any[]);
      expect(collectionManager.collectionInstancesArr.length).toBe(2);
    });

    it('should not add duplicate collections', () => {
      const collections = [{ name: 'test' }, { name: 'test' }];
      collectionManager.addCollections(collections as any[]);
      expect(collectionManager.collectionInstancesArr.length).toBe(1);
    });

    it('custom Collection class', () => {
      class CustomCollection extends Collection {}

      class CustomTemplate extends CollectionTemplate {
        name = 'custom';
        Collection = CustomCollection;
      }

      const collections = [{ name: 'test', template: 'custom' }];
      collectionManager.dataSourceManager.addCollectionTemplates([CustomTemplate]);
      collectionManager.addCollections(collections as any[]);
      const collection = collectionManager.getCollection('test');
      expect(collection).instanceOf(CustomCollection);
    });

    it('custom Template with transform', () => {
      class CustomTemplate extends CollectionTemplate {
        name = 'custom';
        transform(collection) {
          collection.test = 'transformed';
          return collection;
        }
      }

      const collections = [{ name: 'test', template: 'custom' }];
      collectionManager.dataSourceManager.addCollectionTemplates([CustomTemplate]);
      collectionManager.addCollections(collections as any[]);
      const collection = collectionManager.getCollection<{ test: string }>('test');
      expect(collection.getOption('test')).toBe('transformed');
    });
  });

  describe('setCollections', () => {
    it('should replace existing collections', () => {
      const initialCollections = [{ name: 'initial' }];
      const newCollections = [{ name: 'new' }];
      collectionManager.addCollections(initialCollections as any[]);
      collectionManager.setCollections(newCollections as any[]);
      expect(collectionManager.collectionInstancesArr.length).toBe(1);
      expect(Object.keys(collectionManager.collectionInstancesMap)).toEqual(['new']);
    });
  });

  describe('reAddCollections', () => {
    it('should re-add existing collections', () => {
      const initialCollections = [
        { name: 'a', rawTitle: 'aa' },
        { name: 'b', rawTitle: 'bb' },
      ];

      collectionManager.addCollections(initialCollections as any[]);

      collectionManager.getCollection('a');

      const spy = vitest.spyOn(collectionManager, 'addCollections');
      collectionManager.reAddCollections();
      expect(collectionManager.collectionInstancesArr.length).toBe(2);

      expect(spy).toHaveBeenCalledWith([
        collectionManager.getCollection('a').getOptions(),
        collectionManager.getCollection('b').getOptions(),
      ]);
    });

    it('should re-add specified collections with filter', () => {
      const initialCollections = [
        { name: 'a', rawTitle: 'aa' },
        { name: 'b', rawTitle: 'bb' },
      ];

      collectionManager.addCollections(initialCollections as any[]);

      const spy = vitest.spyOn(collectionManager, 'addCollections');
      collectionManager.reAddCollections([collectionManager.getCollection('a')]);
      expect(collectionManager.collectionInstancesArr.length).toBe(2);

      expect(spy).toHaveBeenCalledWith([collectionManager.getCollection('a').getOptions()]);
    });
  });

  describe('getCollection', () => {
    it('should get a collection by name', () => {
      const collections = [{ name: 'test' }];
      collectionManager.addCollections(collections as any[]);
      const collection = collectionManager.getCollection('test');
      expect(collection).toBeDefined();
    });

    it('should return undefined for non-existing collection', () => {
      const collection = collectionManager.getCollection('nonExisting');
      expect(collection).toBeUndefined();
    });

    it('should handle path with associations', () => {
      collectionManager.addCollections(collections as any[]);
      const collection = collectionManager.getCollection('users.roles');
      expect(collection).toBeDefined();
    });

    it('if collection is object, should return the collection instance', () => {
      const collection = collectionManager.getCollection({ name: 'test' });
      expect(collection).instanceOf(Collection);
      expect(collection.name).toBe('test');
    });
  });

  describe('getCollections', () => {
    it('should return all collections', () => {
      const collections = [{ name: 'test1' }, { name: 'test2' }];
      collectionManager.addCollections(collections as any[]);
      const allCollections = collectionManager.getCollections();
      expect(allCollections.length).toBe(2);
    });

    it('should return filtered collections', () => {
      const collections = [{ name: 'test1' }, { name: 'test2' }];
      collectionManager.addCollections(collections as any[]);
      const filteredCollections = collectionManager.getCollections((c) => c.name === 'test1');
      expect(filteredCollections.length).toBe(1);
      expect(filteredCollections[0].name).toBe('test1');
    });
  });

  describe('getCollectionName', () => {
    it('should return the name of a collection', () => {
      const collections = [{ name: 'test' }];
      collectionManager.addCollections(collections as any[]);
      const name = collectionManager.getCollectionName('test');
      expect(name).toBe('test');
    });
  });

  describe('getCollectionField', () => {
    beforeEach(() => {
      collectionManager.addCollections(collections as any[]);
    });

    it('should return undefined for invalid path', () => {
      const field = collectionManager.getCollectionField('invalid');
      expect(field).toBeUndefined();

      const field2 = collectionManager.getCollectionField(undefined);
      expect(field2).toBeUndefined();
    });

    it('should return a collection field by path', () => {
      const field = collectionManager.getCollectionField('users.nickname');
      expect(field).toBeDefined();
      expect(field.name).toBe('nickname');
    });

    it('if collection not found, should return undefined', () => {
      const field = collectionManager.getCollectionField('invalid.nickname');
      expect(field).toBeUndefined();
    });

    it('if field is object, should return the field', () => {
      const field = collectionManager.getCollectionField({ name: 'nickname' });
      expect(field).toEqual({ name: 'nickname' });
    });
  });

  describe('getCollectionFields', () => {
    beforeEach(() => {
      collectionManager.addCollections(collections as any[]);
    });

    it('should return fields of a specified collection', () => {
      const fields = collectionManager.getCollectionFields('users');
      expect(fields.length).greaterThan(1);
    });

    it('if collection not found, should return an empty array', () => {
      const fields = collectionManager.getCollectionFields('invalid');
      expect(fields).toEqual([]);
    });
  });

  describe('clone', () => {
    it('should create a clone of the collection manager', () => {
      const collections = [{ name: 'test' }];
      collectionManager.addCollections(collections as any[]);
      const clone = collectionManager.clone();
      expect(clone).not.toBe(collectionManager);
      expect(clone.collectionInstancesArr).toEqual(collectionManager.collectionInstancesArr);
      expect(clone.collectionInstancesMap).toEqual(collectionManager.collectionInstancesMap);
      expect(clone.dataSource).toBe(collectionManager.dataSource);
    });
  });

  describe('getSourceKeyByAssociation', () => {
    let collectionManager: CollectionManager;

    beforeEach(() => {
      const app = new Application({
        dataSourceManager: {
          collections: collections as any,
        },
      });
      collectionManager = app.getCollectionManager();
    });

    describe('getSourceKeyByAssociation', () => {
      it('should return undefined when associationName is not provided', () => {
        const result = collectionManager.getSourceKeyByAssociation('');
        expect(result).toBeUndefined();
      });

      it('should return undefined when field is not found', () => {
        const result = collectionManager.getSourceKeyByAssociation('not-exist');
        expect(result).toBeUndefined();

        const result2 = collectionManager.getSourceKeyByAssociation('users.not-exist');
        expect(result2).toBeUndefined();
      });

      it('should return field sourceKey when it exists', () => {
        const result = collectionManager.getSourceKeyByAssociation('users.roles');
        expect(result).toBe('id');
      });

      it('should return source collection filterTargetKey when field sourceKey does not exist', () => {
        const field = collectionManager.getCollectionField('users.roles');
        const users = collectionManager.getCollection('users');

        delete field.sourceKey;
        const options = users.getOptions();
        options.filterTargetKey = 'filterTargetKey';

        const result = collectionManager.getSourceKeyByAssociation('users.roles');
        expect(result).toBe('filterTargetKey');
      });

      it('should return source collection primary key when field sourceKey and filterTargetKey do not exist', () => {
        const field = collectionManager.getCollectionField('users.roles');

        delete field.sourceKey;

        const result = collectionManager.getSourceKeyByAssociation('users.roles');
        expect(result).toBe('id');
      });

      it('should return "id" when field sourceKey, filterTargetKey, and primary key do not exist', () => {
        const field = collectionManager.getCollectionField('users.roles');
        const collection = collectionManager.getCollection('roles');
        const roleName = collectionManager.getCollectionField('roles.name');

        delete field.sourceKey;
        delete roleName.primaryKey;
        delete collection.getOptions().filterTargetKey;

        const result = collectionManager.getSourceKeyByAssociation('users.roles');
        expect(result).toBe('id');
      });
    });
  });
});