78 lines
1.4 KiB
Go
78 lines
1.4 KiB
Go
package forge
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import (
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"errors"
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"fmt"
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"net/url"
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"regexp"
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"runtime"
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"strings"
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)
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var (
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amd64Re = regexp.MustCompile(`amd64|x86_64|64`)
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linuxRe = regexp.MustCompile(`linux|linux64`)
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windowsRe = regexp.MustCompile(`windows|win64`)
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)
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type Release struct {
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Name string
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Assets []Asset
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}
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type Asset struct {
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Name string
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DownloadURL string
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}
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type Forger interface {
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Name() string
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Latest() (Release, error)
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}
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func splitURI(uri string) (string, []string, error) {
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if !strings.HasPrefix(uri, "http") {
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uri = "https://" + uri
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}
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u, err := url.ParseRequestURI(uri)
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if err != nil {
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return "", nil, fmt.Errorf("could not parse URI: %w", err)
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}
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u.Scheme = "https"
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paths := strings.FieldsFunc(u.Path, func(r rune) bool { return r == '/' })
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u.Path = ""
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return u.String(), paths, nil
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}
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func Latest(f Forger) (Asset, error) {
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var asset Asset
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var re *regexp.Regexp
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switch runtime.GOOS {
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case "linux":
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re = linuxRe
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case "windows":
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re = windowsRe
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default:
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return asset, fmt.Errorf("%q is not a supported OS", runtime.GOOS)
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}
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release, err := f.Latest()
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if err != nil {
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return asset, fmt.Errorf("could not get latest release: %w", err)
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}
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for _, a := range release.Assets {
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if amd64Re.MatchString(a.Name) && re.MatchString(a.Name) {
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fmt.Printf("found %q\n", a.Name)
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asset = a
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}
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}
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if asset.Name == "" {
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return asset, errors.New("no release found for this OS")
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}
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return asset, nil
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}
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