A quality check for a repository issues count

IssuesCountQualityCheck.swift

struct IssuesCountQualityCheck: RepositoryQualityCheck {
    let id: String = UUID().uuidString
    let title = "Issues count"
    let score: Int

    init(repository: Repository) {
        switch repository.issuesCount {
        case 0..<10:
            score = 100
        case 10..<20:
            score = 75
        case 20..<30:
            score = 50
        case 30..<40:
            score = 25
        default:
            score = 0
        }
    }
}

Using ClosedRange

struct IssuesCountQualityCheck: RepositoryQualityCheck {
    let id: String = UUID().uuidString
    let title = "Issues count"
    let score: Int

    init(repository: Repository, in range: ClosedRange<Int> = 0...50) {
        if let last = range.last, repository.issuesCount >= last {
            score = 0
        } else {
            score = 100 - Int(Double(repository.issuesCount) / Double(range.count) * 100)
        }
    }
}

Or using maximum count:

struct IssuesCountQualityCheck: RepositoryQualityCheck {
    let id: String = UUID().uuidString
    let title = "Issues count"
    let score: Int

    init(repository: Repository, maximumIssues: Int = 50) {
        if repository.issuesCount >= maximumIssues {
            score = 0
        } else {
            score = 100 - Int(Double(repository.issuesCount) / Double(maximumIssues) * 100)
        }
    }
}