// Copyright 2019-2020 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only

import { assert } from 'chai';

import {
  ConversationLookupType,
  ConversationType,
  getEmptyState,
} from '../../../state/ducks/conversations';
import {
  _getConversationComparator,
  _getLeftPaneLists,
  getConversationSelector,
  getPlaceholderContact,
  getSelectedConversation,
  getSelectedConversationId,
} from '../../../state/selectors/conversations';
import { noopAction } from '../../../state/ducks/noop';
import { StateType, reducer as rootReducer } from '../../../state/reducer';

describe('both/state/selectors/conversations', () => {
  const getEmptyRootState = (): StateType => {
    return rootReducer(undefined, noopAction());
  };

  function getDefaultConversation(id: string): ConversationType {
    return {
      id,
      type: 'direct',
      title: `${id} title`,
    };
  }

  describe('#getConversationSelector', () => {
    it('returns empty placeholder if falsey id provided', () => {
      const state = getEmptyRootState();
      const selector = getConversationSelector(state);

      const actual = selector(undefined);

      assert.deepEqual(actual, getPlaceholderContact());
    });
    it('returns empty placeholder if no match', () => {
      const state = {
        ...getEmptyRootState(),
      };
      const selector = getConversationSelector(state);

      const actual = selector('random-id');

      assert.deepEqual(actual, getPlaceholderContact());
    });

    it('returns conversation by e164 first', () => {
      const id = 'id';

      const conversation = getDefaultConversation(id);
      const wrongConversation = getDefaultConversation('wrong');

      const state = {
        ...getEmptyRootState(),
        conversations: {
          ...getEmptyState(),
          conversationLookup: {
            [id]: wrongConversation,
          },
          conversationsByE164: {
            [id]: conversation,
          },
          conversationsByUuid: {
            [id]: wrongConversation,
          },
          conversationsByGroupId: {
            [id]: wrongConversation,
          },
        },
      };

      const selector = getConversationSelector(state);

      const actual = selector(id);

      assert.strictEqual(actual, conversation);
    });
    it('returns conversation by uuid', () => {
      const id = 'id';

      const conversation = getDefaultConversation(id);
      const wrongConversation = getDefaultConversation('wrong');

      const state = {
        ...getEmptyRootState(),
        conversations: {
          ...getEmptyState(),
          conversationLookup: {
            [id]: wrongConversation,
          },
          conversationsByUuid: {
            [id]: conversation,
          },
          conversationsByGroupId: {
            [id]: wrongConversation,
          },
        },
      };

      const selector = getConversationSelector(state);

      const actual = selector(id);

      assert.strictEqual(actual, conversation);
    });
    it('returns conversation by groupId', () => {
      const id = 'id';

      const conversation = getDefaultConversation(id);
      const wrongConversation = getDefaultConversation('wrong');

      const state = {
        ...getEmptyRootState(),
        conversations: {
          ...getEmptyState(),
          conversationLookup: {
            [id]: wrongConversation,
          },
          conversationsByGroupId: {
            [id]: conversation,
          },
        },
      };

      const selector = getConversationSelector(state);

      const actual = selector(id);

      assert.strictEqual(actual, conversation);
    });
    it('returns conversation by conversationId', () => {
      const id = 'id';

      const conversation = getDefaultConversation(id);

      const state = {
        ...getEmptyRootState(),
        conversations: {
          ...getEmptyState(),
          conversationLookup: {
            [id]: conversation,
          },
        },
      };

      const selector = getConversationSelector(state);

      const actual = selector(id);

      assert.strictEqual(actual, conversation);
    });

    // Less important now, given that all prop-generation for conversations is in
    //   models/conversation.getProps() and not here.
    it('does proper caching of result', () => {
      const id = 'id';

      const conversation = getDefaultConversation(id);

      const state = {
        ...getEmptyRootState(),
        conversations: {
          ...getEmptyState(),
          conversationLookup: {
            [id]: conversation,
          },
        },
      };

      const selector = getConversationSelector(state);

      const actual = selector(id);

      const secondState = {
        ...state,
        conversations: {
          ...getEmptyState(),
          conversationLookup: {
            [id]: conversation,
          },
        },
      };

      const secondSelector = getConversationSelector(secondState);
      const secondActual = secondSelector(id);

      assert.strictEqual(actual, secondActual);

      const thirdState = {
        ...state,
        conversations: {
          ...getEmptyState(),
          conversationLookup: {
            [id]: getDefaultConversation('third'),
          },
        },
      };

      const thirdSelector = getConversationSelector(thirdState);
      const thirdActual = thirdSelector(id);

      assert.notStrictEqual(actual, thirdActual);
    });
  });

  describe('#getLeftPaneList', () => {
    it('sorts conversations based on timestamp then by intl-friendly title', () => {
      const data: ConversationLookupType = {
        id1: {
          id: 'id1',
          e164: '+18005551111',
          activeAt: Date.now(),
          name: 'No timestamp',
          timestamp: 0,
          inboxPosition: 0,
          phoneNumber: 'notused',
          isArchived: false,
          markedUnread: false,

          type: 'direct',
          isMe: false,
          lastUpdated: Date.now(),
          title: 'No timestamp',
          unreadCount: 1,
          isSelected: false,
          typingContact: {
            name: 'Someone There',
            color: 'blue',
            phoneNumber: '+18005551111',
          },

          acceptedMessageRequest: true,
        },
        id2: {
          id: 'id2',
          e164: '+18005551111',
          activeAt: Date.now(),
          name: 'B',
          timestamp: 20,
          inboxPosition: 21,
          phoneNumber: 'notused',
          isArchived: false,
          markedUnread: false,

          type: 'direct',
          isMe: false,
          lastUpdated: Date.now(),
          title: 'B',
          unreadCount: 1,
          isSelected: false,
          typingContact: {
            name: 'Someone There',
            color: 'blue',
            phoneNumber: '+18005551111',
          },

          acceptedMessageRequest: true,
        },
        id3: {
          id: 'id3',
          e164: '+18005551111',
          activeAt: Date.now(),
          name: 'C',
          timestamp: 20,
          inboxPosition: 22,
          phoneNumber: 'notused',
          isArchived: false,
          markedUnread: false,

          type: 'direct',
          isMe: false,
          lastUpdated: Date.now(),
          title: 'C',
          unreadCount: 1,
          isSelected: false,
          typingContact: {
            name: 'Someone There',
            color: 'blue',
            phoneNumber: '+18005551111',
          },

          acceptedMessageRequest: true,
        },
        id4: {
          id: 'id4',
          e164: '+18005551111',
          activeAt: Date.now(),
          name: 'Á',
          timestamp: 20,
          inboxPosition: 20,
          phoneNumber: 'notused',
          isArchived: false,
          markedUnread: false,

          type: 'direct',
          isMe: false,
          lastUpdated: Date.now(),
          title: 'A',
          unreadCount: 1,
          isSelected: false,
          typingContact: {
            name: 'Someone There',
            color: 'blue',
            phoneNumber: '+18005551111',
          },

          acceptedMessageRequest: true,
        },
        id5: {
          id: 'id5',
          e164: '+18005551111',
          activeAt: Date.now(),
          name: 'First!',
          timestamp: 30,
          inboxPosition: 30,
          phoneNumber: 'notused',
          isArchived: false,
          markedUnread: false,

          type: 'direct',
          isMe: false,
          lastUpdated: Date.now(),
          title: 'First!',
          unreadCount: 1,
          isSelected: false,
          typingContact: {
            name: 'Someone There',
            color: 'blue',
            phoneNumber: '+18005551111',
          },

          acceptedMessageRequest: true,
        },
      };
      const comparator = _getConversationComparator();
      const { conversations } = _getLeftPaneLists(data, comparator);

      assert.strictEqual(conversations[0].name, 'First!');
      assert.strictEqual(conversations[1].name, 'Á');
      assert.strictEqual(conversations[2].name, 'B');
      assert.strictEqual(conversations[3].name, 'C');
      assert.strictEqual(conversations[4].name, 'No timestamp');
    });

    describe('given pinned conversations', () => {
      it('sorts pinned conversations based on order in storage', () => {
        const data: ConversationLookupType = {
          pin2: {
            id: 'pin2',
            e164: '+18005551111',
            activeAt: Date.now(),
            name: 'Pin Two',
            timestamp: 30,
            inboxPosition: 30,
            phoneNumber: 'notused',
            isArchived: false,
            isPinned: true,
            markedUnread: false,

            type: 'direct',
            isMe: false,
            lastUpdated: Date.now(),
            title: 'Pin Two',
            unreadCount: 1,
            isSelected: false,
            typingContact: {
              name: 'Someone There',
              color: 'blue',
              phoneNumber: '+18005551111',
            },

            acceptedMessageRequest: true,
          },
          pin3: {
            id: 'pin3',
            e164: '+18005551111',
            activeAt: Date.now(),
            name: 'Pin Three',
            timestamp: 30,
            inboxPosition: 30,
            phoneNumber: 'notused',
            isArchived: false,
            isPinned: true,
            markedUnread: false,

            type: 'direct',
            isMe: false,
            lastUpdated: Date.now(),
            title: 'Pin Three',
            unreadCount: 1,
            isSelected: false,
            typingContact: {
              name: 'Someone There',
              color: 'blue',
              phoneNumber: '+18005551111',
            },

            acceptedMessageRequest: true,
          },
          pin1: {
            id: 'pin1',
            e164: '+18005551111',
            activeAt: Date.now(),
            name: 'Pin One',
            timestamp: 30,
            inboxPosition: 30,
            phoneNumber: 'notused',
            isArchived: false,
            isPinned: true,
            markedUnread: false,

            type: 'direct',
            isMe: false,
            lastUpdated: Date.now(),
            title: 'Pin One',
            unreadCount: 1,
            isSelected: false,
            typingContact: {
              name: 'Someone There',
              color: 'blue',
              phoneNumber: '+18005551111',
            },

            acceptedMessageRequest: true,
          },
        };

        const pinnedConversationIds = ['pin1', 'pin2', 'pin3'];
        const comparator = _getConversationComparator();
        const { pinnedConversations } = _getLeftPaneLists(
          data,
          comparator,
          undefined,
          pinnedConversationIds
        );

        assert.strictEqual(pinnedConversations[0].name, 'Pin One');
        assert.strictEqual(pinnedConversations[1].name, 'Pin Two');
        assert.strictEqual(pinnedConversations[2].name, 'Pin Three');
      });
    });
  });

  describe('#getSelectedConversationId', () => {
    it('returns undefined if no conversation is selected', () => {
      const state = {
        ...getEmptyRootState(),
        conversations: {
          ...getEmptyState(),
          conversationLookup: {
            abc123: getDefaultConversation('abc123'),
          },
        },
      };
      assert.isUndefined(getSelectedConversationId(state));
    });

    it('returns the selected conversation ID', () => {
      const state = {
        ...getEmptyRootState(),
        conversations: {
          ...getEmptyState(),
          conversationLookup: {
            abc123: getDefaultConversation('abc123'),
          },
          selectedConversationId: 'abc123',
        },
      };
      assert.strictEqual(getSelectedConversationId(state), 'abc123');
    });
  });

  describe('#getSelectedConversation', () => {
    it('returns undefined if no conversation is selected', () => {
      const state = {
        ...getEmptyRootState(),
        conversations: {
          ...getEmptyState(),
          conversationLookup: {
            abc123: getDefaultConversation('abc123'),
          },
        },
      };
      assert.isUndefined(getSelectedConversation(state));
    });

    it('returns the selected conversation ID', () => {
      const state = {
        ...getEmptyRootState(),
        conversations: {
          ...getEmptyState(),
          conversationLookup: {
            abc123: getDefaultConversation('abc123'),
          },
          selectedConversationId: 'abc123',
        },
      };
      assert.deepEqual(
        getSelectedConversation(state),
        getDefaultConversation('abc123')
      );
    });
  });
});