Implement cache migrations

internal/cache/cache.go

@@ -122,8 +122,16 @@ func (c *Cache) Read() error {
 	d.Decode(c)
 
 	// Perform migrations
-	if err := c.doMigrations(); err != nil {
-		c.log.Error("Failed to run cache migrations", c.log.Args("error", err))
+	err, migrated := c.doMigrations()
+	if err != nil {
+		c.log.Error("Failed to run cache migrations",
+			c.log.Args(
+				"migrated", migrated,
+				"error", err,
+			))
+	} else if migrated > 0 {
+		c.log.Info("Migrations run successfully", c.log.Args(
+			"migrated", migrated))
 	}
 
 	c.readFromFile = true

internal/cache/cache_migrations.go

@@ -5,9 +5,13 @@ import (
 	"fmt"
 
 	"golang.org/x/mod/semver"
+
+	"gitea.libretechconsulting.com/rmcguire/git-project-manager/internal/remotes/projects"
 )
 
-type migrationFunc func(c *Cache) error
+// Migrations funcs should return errors along with
+// number of records updated
+type migrationFunc func(c *Cache) (error, int)
 
 // Registry of migrations by version
 var migrations = map[string]map[string]migrationFunc{
@@ -20,38 +24,55 @@ var migrations = map[string]map[string]migrationFunc{
 // of cache read from disk.
 // Does not check to ensure migrations were successful,
 // only checks if a version has been achieved
-func (c *Cache) DoMigrations() error {
+func (c *Cache) DoMigrations() (error, int) {
 	c.lock.Lock()
 	defer c.lock.Unlock()
 	return c.doMigrations()
 }
 
-func (c *Cache) doMigrations() error {
+func (c *Cache) doMigrations() (error, int) {
 	var errs error
+	var migrated int
 	for version, migrationFuncs := range migrations {
+		var funcMigrated int
 		if semver.Compare(c.CacheVersion, version) < 0 {
 			for name, migration := range migrationFuncs {
-				err := migration(c)
+				err, numMigrated := migration(c)
 				if err != nil {
 					errs = errors.Join(
 						errs,
 						fmt.Errorf("%s - %s: %w", version, name, err),
 					)
 				}
+				funcMigrated += numMigrated
 			}
 
 			// We've reached a cache version, update the CacheVersion
 			// and write to disk
-			if errs == nil {
+			if errs == nil && funcMigrated > 0 {
 				c.CacheVersion = version
 				c.write()
 			}
 		}
+		migrated += funcMigrated
 	}
 
-	return errs
+	return errs, migrated
 }
 
-func v010_aliases(c *Cache) error {
-	return errors.New("unimplemented migration")
+func v010_aliases(c *Cache) (error, int) {
+	var aliasesMigrated int
+	var errs error
+	for i, a := range c.Aliases {
+		if a.ID == "" {
+			if a.Remote == "" {
+				errs = errors.Join(errs,
+					fmt.Errorf("alias %s [id:%d] has no remote", a.Alias, a.ProjectID))
+				continue
+			}
+			c.Aliases[i].ID = projects.MakeID(a.Remote, a.ProjectID)
+			aliasesMigrated++
+		}
+	}
+	return errs, aliasesMigrated
 }

internal/remotes/projects/projects.go

@@ -9,6 +9,8 @@ import (
 	"github.com/go-git/go-git/v5"
 )
 
+// Git project metadata
+// Do not use Project.ID directly (remotes may conflict), use Project.GetID()
 type Project struct {
 	ID                int
 	Description       string
@@ -44,19 +46,30 @@ func (pl *ProjectLanguages) AddLanguage(lang *ProjectLanguage) {
 	*pl = append(*pl, lang)
 }
 
-// Gets a unique ID using a short-sha of the http repo URL
+// Gets a unique ID using a short-sha of the http repo
 // along with the numerical ID of the project.
 // Uses SSH URL and then Remote if previous is empty
 func (p *Project) GetID() string {
-	shaText := p.HTTPURLToRepo
-	if shaText == "" && p.SSHURLToRepo != "" {
-		shaText = p.SSHURLToRepo
-	} else if shaText == "" {
-		shaText = p.Remote
+	return fmt.Sprintf("%s||%d", p.GetRemoteSha(), p.ID)
 }
 
-	shortSha := fmt.Sprintf("%x", sha1.Sum([]byte(shaText)))[:12]
-	return fmt.Sprintf("%s||%d", shortSha, p.ID)
+func MakeID(remote string, projectID int) string {
+	return fmt.Sprintf("%s||%d", GetRemoteSha(remote), projectID)
+}
+
+func (p *Project) GetRemoteSha() string {
+	remote := p.Remote
+	if remote == "" && p.HTTPURLToRepo != "" {
+		remote = p.HTTPURLToRepo
+	} else if remote == "" && p.WebURL != "" {
+		remote = p.WebURL
+	}
+
+	return GetRemoteSha(remote)
+}
+
+func GetRemoteSha(remote string) string {
+	return fmt.Sprintf("%x", sha1.Sum([]byte(remote)))[:12]
 }
 
 func (p *Project) String() string {