move GetVersion to provider_github.go

main.go

@@ -1,9 +1,7 @@
 package main
 
 import (
-	"encoding/json"
 	"fmt"
-	"net/http"
 )
 
 type Version interface {
@@ -14,32 +12,6 @@ type VersionProvider interface {
 	GetVersion() (Version, error)
 }
 
-func (g *GitHubVersionProvider) GetVersion() (Version, error) {
-	url := fmt.Sprintf("https://api.github.com/repos/%s/releases", g.Repository)
-	r, err := http.Get(url)
-	if err != nil {
-		return nil, fmt.Errorf("couldn't fetch release list for %s from GitHub: %w", g.Repository, err)
-	}
-	defer r.Body.Close()
-
-	var releases []GitHubRelease
-	err = json.NewDecoder(r.Body).Decode(&releases)
-	if err != nil {
-		return nil, fmt.Errorf("couldn't parse json: %w", err)
-	}
-
-	for _, release := range releases {
-		if release.Draft && !g.IncludeDrafts {
-			continue
-		}
-		if release.Prerelease && !g.IncludePrereleases {
-			continue
-		}
-		return &release, nil
-	}
-	return nil, fmt.Errorf("couldn't find any suitable release on GitHub for project %s", g.Repository)
-}
-
 func main() {
 	v := GitHubVersionProvider{Repository: "OpenSMTPD/OpenSMTPD"}
 	latest, err := v.GetVersion()

provider_github.go

@@ -1,5 +1,11 @@
 package main
 
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+)
+
 type GitHubVersionProvider struct {
 	Repository         string
 	IncludeDrafts      bool
@@ -14,6 +20,29 @@ type GitHubRelease struct {
 }
 
 func (g GitHubRelease) String() string { return g.TagName }
-func (g GitHubRelease) Compare() int {
-	return 0 // TODO
+
+func (g *GitHubVersionProvider) GetVersion() (Version, error) {
+	url := fmt.Sprintf("https://api.github.com/repos/%s/releases", g.Repository)
+	r, err := http.Get(url)
+	if err != nil {
+		return nil, fmt.Errorf("couldn't fetch release list for %s from GitHub: %w", g.Repository, err)
+	}
+	defer r.Body.Close()
+
+	var releases []GitHubRelease
+	err = json.NewDecoder(r.Body).Decode(&releases)
+	if err != nil {
+		return nil, fmt.Errorf("couldn't parse json: %w", err)
+	}
+
+	for _, release := range releases {
+		if release.Draft && !g.IncludeDrafts {
+			continue
+		}
+		if release.Prerelease && !g.IncludePrereleases {
+			continue
+		}
+		return &release, nil
+	}
+	return nil, fmt.Errorf("couldn't find any suitable release on GitHub for project %s", g.Repository)
 }