Moved functions

domain.go

@@ -1,5 +1,12 @@
 package mailfull
 
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"syscall"
+)
+
 // Domain represents a Domain.
 type Domain struct {
 	name         string
@@ -32,3 +39,59 @@ func NewDomain(name string) (*Domain, error) {
 func (d *Domain) Name() string {
 	return d.name
 }
+
+// Domains returns a Domain slice.
+func (r *Repository) Domains() ([]*Domain, error) {
+	fileInfos, err := ioutil.ReadDir(r.DirMailDataPath)
+	if err != nil {
+		return nil, err
+	}
+
+	domains := make([]*Domain, 0, len(fileInfos))
+
+	for _, fileInfo := range fileInfos {
+		if !fileInfo.IsDir() {
+			continue
+		}
+
+		name := fileInfo.Name()
+
+		domain, err := NewDomain(name)
+		if err != nil {
+			continue
+		}
+
+		domains = append(domains, domain)
+	}
+
+	return domains, nil
+}
+
+// Domain returns a Domain of the input name.
+func (r *Repository) Domain(domainName string) (*Domain, error) {
+	if !validDomainName(domainName) {
+		return nil, ErrInvalidDomainName
+	}
+
+	fileInfo, err := os.Stat(filepath.Join(r.DirMailDataPath, domainName))
+	if err != nil {
+		if err.(*os.PathError).Err == syscall.ENOENT {
+			return nil, nil
+		}
+
+		return nil, err
+	}
+
+	if !fileInfo.IsDir() {
+		return nil, nil
+	}
+
+	name := domainName
+
+	domain, err := NewDomain(name)
+	if err != nil {
+		return nil, err
+	}
+
+	return domain, nil
+}