87 lines
1.5 KiB
Go
87 lines
1.5 KiB
Go
package resource
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import (
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"errors"
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"sort"
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"github.com/blang/semver"
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"github.com/google/go-github/github"
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)
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type CheckCommand struct {
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github GitHub
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}
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func NewCheckCommand(github GitHub) *CheckCommand {
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return &CheckCommand{
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github: github,
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}
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}
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func (c *CheckCommand) Run(request CheckRequest) ([]Version, error) {
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releases, err := c.github.ListReleases()
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if err != nil {
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return []Version{}, err
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}
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if len(releases) == 0 {
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return []Version{}, errors.New("repository had no releases")
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}
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sort.Sort(byVersion(releases))
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latestVersion := *releases[len(releases)-1].TagName
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if request.Version.Tag == "" {
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return []Version{
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{Tag: latestVersion},
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}, nil
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}
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if latestVersion == request.Version.Tag {
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return []Version{}, nil
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}
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upToLatest := false
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reversedVersions := []Version{}
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for _, release := range releases {
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version := *release.TagName
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if upToLatest {
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reversedVersions = append(reversedVersions, Version{Tag: version})
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} else {
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upToLatest = request.Version.Tag == version
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}
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}
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return reversedVersions, nil
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}
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type byVersion []github.RepositoryRelease
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func (r byVersion) Len() int {
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return len(r)
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}
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func (r byVersion) Swap(i, j int) {
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r[i], r[j] = r[j], r[i]
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}
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func (r byVersion) Less(i, j int) bool {
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if r[i].TagName == nil || r[j].TagName == nil {
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return false
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}
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first, err := semver.New(dropLeadingAlpha(*r[i].TagName))
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if err != nil {
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return true
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}
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second, err := semver.New(dropLeadingAlpha(*r[j].TagName))
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if err != nil {
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return false
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}
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return first.LT(*second)
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}
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