Refactor split long functions (#135)

we have big functions that handle all stuff ... we should split this into smaler chuncks so we could test them seperate and make clear cuts in what happens where

Reviewed-on: https://codeberg.org/Codeberg/pages-server/pulls/135

server/upstream/helper.go

@@ -2,35 +2,46 @@ package upstream
 
 import (
 	"errors"
+	"fmt"
 
 	"github.com/rs/zerolog/log"
 
 	"codeberg.org/codeberg/pages/server/gitea"
 )
 
-// GetBranchTimestamp finds the default branch (if branch is "") and returns the last modification time of the branch
-// (or nil if the branch doesn't exist)
-func GetBranchTimestamp(giteaClient *gitea.Client, owner, repo, branch string) *gitea.BranchTimestamp {
-	log := log.With().Strs("BranchInfo", []string{owner, repo, branch}).Logger()
+// GetBranchTimestamp finds the default branch (if branch is "") and save branch and it's last modification time to Options
+func (o *Options) GetBranchTimestamp(giteaClient *gitea.Client) (bool, error) {
+	log := log.With().Strs("BranchInfo", []string{o.TargetOwner, o.TargetRepo, o.TargetBranch}).Logger()
 
-	if len(branch) == 0 {
+	if len(o.TargetBranch) == 0 {
 		// Get default branch
-		defaultBranch, err := giteaClient.GiteaGetRepoDefaultBranch(owner, repo)
+		defaultBranch, err := giteaClient.GiteaGetRepoDefaultBranch(o.TargetOwner, o.TargetRepo)
 		if err != nil {
 			log.Err(err).Msg("Could't fetch default branch from repository")
-			return nil
+			return false, err
 		}
 		log.Debug().Msgf("Succesfully fetched default branch %q from Gitea", defaultBranch)
-		branch = defaultBranch
+		o.TargetBranch = defaultBranch
 	}
 
-	timestamp, err := giteaClient.GiteaGetRepoBranchTimestamp(owner, repo, branch)
+	timestamp, err := giteaClient.GiteaGetRepoBranchTimestamp(o.TargetOwner, o.TargetRepo, o.TargetBranch)
 	if err != nil {
 		if !errors.Is(err, gitea.ErrorNotFound) {
 			log.Error().Err(err).Msg("Could not get latest commit's timestamp from branch")
 		}
-		return nil
+		return false, err
 	}
+
+	if timestamp == nil || timestamp.Branch == "" {
+		return false, fmt.Errorf("empty response")
+	}
+
 	log.Debug().Msgf("Succesfully fetched latest commit's timestamp from branch: %#v", timestamp)
-	return timestamp
+	o.BranchTimestamp = timestamp.Timestamp
+	o.TargetBranch = timestamp.Branch
+	return true, nil
+}
+
+func (o *Options) ContentWebLink(giteaClient *gitea.Client) string {
+	return giteaClient.ContentWebLink(o.TargetOwner, o.TargetRepo, o.TargetBranch, o.TargetPath) + "; rel=\"canonical\""
 }