# frozen_string_literal: true

require 'rails_helper'

RSpec.describe Match, type: :model do
  context 'association' do
    it { should have_many :match_scores }
    it { should belong_to(:stage).optional }
    it { should belong_to(:group).optional }
  end

  context '#new' do
    it 'needs only a group' do
      match = Match.new group: build(:group)
      expect(match).to be_valid
    end

    it 'needs only a stage' do
      match = Match.new stage: build(:stage)
      expect(match).to be_valid
    end

    it 'can\'t have a group and a stage' do
      match = Match.new group: build(:group), stage: build(:stage)
      expect(match).to be_invalid
    end
  end

  context 'match_scores' do
    before do
      @match = create(:match)
      @match.match_scores << build_pair(:match_score)
    end

    it 'can only have two match_scores' do
      @match.match_scores << build(:match_score)
      expect(@match).to be_invalid
    end

    it 'can access its match_scores' do
      @match.match_scores[0].points = 0
      @match.match_scores[1].points = 0
    end
  end

  context '#winner' do
    it 'returns a winner Team for a decided match' do
      decided_playoff_match = create(:decided_playoff_match)
      winning_team_match_score = decided_playoff_match.match_scores.first
      winning_team_match_score.points = 9999
      winning_team = winning_team_match_score.team
      expect(decided_playoff_match.winner).to be winning_team
    end

    it 'returns nil for an undecided match' do
      expect(create(:undecided_group_match).winner).to be(nil)
    end
  end

  context '#teams' do
    before do
      @playoff_match = create(:running_playoff_match)
      @group_match = create(:running_group_match)
      @teams = create_list(:team, 2)
      @match_scores = create_list(:match_score, 2)
      @match_scores.each_with_index { |match, i| match.team = @teams[i] }
      @playoff_match.match_scores = @match_scores
      @group_match.match_scores = @match_scores
    end

    context 'called on group match' do
      let(:call_teams_on_group_match) do
        @group_match.teams
      end

      it 'returns 2 team objects' do
        teams = call_teams_on_group_match
        expect(teams).to match_array(@teams)
      end
    end

    context 'called on playoff match' do
      let(:call_teams_on_playoff_match) do
        @playoff_match.teams
      end

      it 'returns 2 team objects' do
        teams = call_teams_on_playoff_match
        expect(teams).to match_array(@teams)
      end
    end
  end

  context '#points_of' do
    before do
      @match = create(:running_group_match)
      teams = @match.teams
      @team1 = teams.first
      @team2 = teams.second
      @uninvolved_team = create(:team)
    end
    context 'even match' do
      before do
        @match.match_scores.each do |ms|
          ms.points = 34
          ms.save!
        end
      end

      it 'returns correct group_points' do
        expect(@match.group_points_of(@team1)).to be(1)
        expect(@match.group_points_of(@team2)).to be(1)
        expect(@match.group_points_of(@uninvolved_team)).to be(0)
      end

      it 'returns correct scored_points' do
        expect(@match.scored_points_of(@team1)).to be(34)
        expect(@match.scored_points_of(@team2)).to be(34)
        expect(@match.scored_points_of(@uninvolved_team)).to be(0)
      end

      it 'returns correct received_points' do
        expect(@match.received_points_of(@team1)).to be(34)
        expect(@match.received_points_of(@team2)).to be(34)
        expect(@match.received_points_of(@uninvolved_team)).to be(0)
      end
    end

    context 'not started match' do
      before do
        @not_started_match = create(:running_group_match, state: :not_started)
        @team1 = @not_started_match.teams.first
      end

      it 'returns correct group_points' do
        expect(@not_started_match.group_points_of(@team1)).to be(0)
      end

      it 'returns correct scored_points' do
        expect(@match.scored_points_of(@team1)).to be(0)
      end

      it 'returns correct received_points' do
        expect(@match.received_points_of(@team1)).to be(0)
      end
    end

    context 'uneven match' do
      before do
        @match.match_scores.each do |ms|
          ms.points = ms.team == @team1 ? 42 : 17
          ms.save!
        end
      end

      it 'returns correct group_points' do
        expect(@match.group_points_of(@team1)).to be(3)
        expect(@match.group_points_of(@team2)).to be(0)
        expect(@match.group_points_of(@uninvolved_team)).to be(0)
      end

      it 'returns correct scored_points' do
        expect(@match.scored_points_of(@team1)).to be(42)
        expect(@match.scored_points_of(@team2)).to be(17)
        expect(@match.scored_points_of(@uninvolved_team)).to be(0)
      end

      it 'returns correct received_points' do
        expect(@match.received_points_of(@team1)).to be(17)
        expect(@match.received_points_of(@team2)).to be(42)
        expect(@match.received_points_of(@uninvolved_team)).to be(0)
      end
    end
  end
end