refactor server repo

internal/adapters/data/file/metadata_manager.go

@@ -0,0 +1,141 @@
+// Copyright 2025.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package file
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+
+	"github.com/Adembc/lazyssh/internal/core/domain"
+)
+
+type ServerMetadata struct {
+	Tags     []string `json:"tags,omitempty"`
+	LastSeen string   `json:"last_seen,omitempty"`
+	PinnedAt string   `json:"pinned_at,omitempty"`
+	SSHCount int      `json:"ssh_count,omitempty"`
+}
+
+type metadataManager struct {
+	filePath string
+}
+
+func newMetadataManager(filePath string) *metadataManager {
+	return &metadataManager{filePath: filePath}
+}
+
+func (m *metadataManager) loadAll() (map[string]ServerMetadata, error) {
+	metadata := make(map[string]ServerMetadata)
+
+	if _, err := os.Stat(m.filePath); os.IsNotExist(err) {
+		return metadata, nil
+	}
+
+	data, err := os.ReadFile(m.filePath)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(data) == 0 {
+		return metadata, nil
+	}
+
+	if err := json.Unmarshal(data, &metadata); err != nil {
+		return nil, fmt.Errorf("failed to parse metadata JSON: %w", err)
+	}
+
+	return metadata, nil
+}
+
+func (m *metadataManager) saveAll(metadata map[string]ServerMetadata) error {
+	if err := m.ensureDirectory(); err != nil {
+		return err
+	}
+
+	data, err := json.MarshalIndent(metadata, "", "  ")
+	if err != nil {
+		return err
+	}
+
+	return os.WriteFile(m.filePath, data, 0o600)
+}
+
+func (m *metadataManager) updateServer(server domain.Server) error {
+	metadata, err := m.loadAll()
+	if err != nil {
+		metadata = make(map[string]ServerMetadata)
+	}
+
+	serverMeta := ServerMetadata{
+		Tags:     server.Tags,
+		LastSeen: server.LastSeen.Format(time.RFC3339),
+	}
+
+	if !server.PinnedAt.IsZero() {
+		serverMeta.PinnedAt = server.PinnedAt.Format(time.RFC3339)
+	}
+
+	metadata[server.Alias] = serverMeta
+	return m.saveAll(metadata)
+}
+
+func (m *metadataManager) deleteServer(alias string) error {
+	metadata, err := m.loadAll()
+	if err != nil {
+		return nil // Nothing to delete if we can't load
+	}
+
+	delete(metadata, alias)
+	return m.saveAll(metadata)
+}
+
+func (m *metadataManager) setPinned(alias string, pinned bool) error {
+	metadata, err := m.loadAll()
+	if err != nil {
+		metadata = make(map[string]ServerMetadata)
+	}
+
+	meta := metadata[alias]
+	if pinned {
+		meta.PinnedAt = time.Now().Format(time.RFC3339)
+	} else {
+		meta.PinnedAt = ""
+	}
+
+	metadata[alias] = meta
+	return m.saveAll(metadata)
+}
+
+func (m *metadataManager) recordSSH(alias string) error {
+	metadata, err := m.loadAll()
+	if err != nil {
+		metadata = make(map[string]ServerMetadata)
+	}
+
+	meta := metadata[alias]
+	meta.LastSeen = time.Now().Format(time.RFC3339)
+	meta.SSHCount++
+
+	metadata[alias] = meta
+	return m.saveAll(metadata)
+}
+
+func (m *metadataManager) ensureDirectory() error {
+	dir := filepath.Dir(m.filePath)
+	return os.MkdirAll(dir, 0o750)
+}