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35 lines
1.5 KiB
35 lines
1.5 KiB
6 years ago
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class Competitions::JoinTeamService < ApplicationService
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Error = Class.new(StandardError)
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attr_reader :competition, :user, :params
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def initialize(competition, user, params)
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@competition = competition
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@user = user
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@params = params
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end
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def call
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invite_code = params[:invite_code].to_s.strip
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raise Error, '战队邀请码不能为空' if invite_code.blank?
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is_teacher = user.is_teacher?
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raise Error, '本竞赛的参赛者限定为：学生' if is_teacher && competition.teacher_enroll_forbidden?
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raise Error, '本竞赛的参赛者限定为：教师' if !is_teacher && competition.member_enroll_forbidden?
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team = competition.competition_teams.find_by(invite_code: invite_code)
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raise Error, '战队邀请码无效' if team.blank?
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raise Error, '您已加入该战队' if team.team_members.exists?(user_id: user.id)
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enrolled = competition.team_members.exists?(user_id: user.id)
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if enrolled && (is_teacher && competition.teacher_multiple_limited?) || (!is_teacher && competition.member_multiple_limited?)
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raise Error, '您已加入其它战队'
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end
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raise Error, '该战队教师人数已满' if is_teacher && team.teachers.count == competition.teacher_staff.maximum
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raise Error, '该战队队员人数已满' if !is_teacher && team.members.count == competition.member_staff.maximum
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role = is_teacher ? 3 : 2
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team.team_members.create!(competition_id: competition.id, user_id: user, role: role, is_teacher: is_teacher)
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end
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end
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