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class Admins::CreateCompetitionPrizeUsersService < ApplicationService
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attr_reader :competition
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def initialize(competition)
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@competition = competition
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end
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def call
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raise Error, '竞赛还未结束' unless competition.finished?
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raise Error, '请勿重复生成' if competition.competition_prize_users.exists?
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raise Error, '请先设置奖项' if prizes.blank?
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raise Error, '无获奖队伍' if prize_teams.blank?
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ActiveRecord::Base.transaction do
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columns = %i[competition_id competition_team_id competition_prize_id user_id
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status rank leader created_at updated_at]
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CompetitionPrizeUser.bulk_insert(*columns) do |worker|
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prize_teams.each_with_index do |team, index|
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rank = index + 1
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prize = team_prize(rank) # 根据排名获取当前队伍奖项
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team.team_members.each do |member|
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attr = {
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competition_id: competition.id,
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competition_team_id: team.id,
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competition_prize_id: prize.id,
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user_id: member.user_id,
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leader: member.creator?,
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status: :pending,
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rank: rank
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}
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worker.add(attr)
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end
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end
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end
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end
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end
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private
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def prizes
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@_prizes ||= competition.competition_prizes.order(id: :asc).to_a
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end
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def team_prize(rank)
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current = 0
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prizes.each do |prize|
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return prize if rank > current && rank <= current + prize.num
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current += prize.num
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end
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end
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def prize_teams
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@_prize_teams ||= begin
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prize_num_total = prizes.sum(&:num)
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# 只有一个阶段，则成绩为该阶段成绩，否则为stage ID为0的总成绩
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stage_id = competition.competition_stages.count == 1 ? competition.competition_stages.first.id : 0
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competition.competition_teams.joins(:competition_scores)
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.where(competition_scores: { competition_stage_id: stage_id })
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.order("competition_scores.score desc, competition_scores.cost_time desc")
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.includes(:team_members)
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.limit(prize_num_total)
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end
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end
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end |
