feat: implement full restore functionality with TUI integration

- Add complete restore engine (internal/restore/)
  - RestoreSingle() for single database restore
  - RestoreCluster() for full cluster restore
  - Archive format detection (7 formats supported)
  - Safety validation (integrity, disk space, tools)
  - Streaming decompression with pigz support

- Add CLI restore commands (cmd/restore.go)
  - restore single: restore single database backup
  - restore cluster: restore full cluster backup
  - restore list: list available backup archives
  - Safety-first design: dry-run by default, --confirm required

- Add TUI restore integration (internal/tui/)
  - Archive browser: browse and select backups
  - Restore preview: safety checks and confirmation
  - Restore execution: real-time progress tracking
  - Backup manager: comprehensive archive management

- Features:
  - Format auto-detection (.dump, .dump.gz, .sql, .sql.gz, .tar.gz)
  - Archive validation before restore
  - Disk space verification
  - Tool availability checks
  - Target database configuration
  - Clean-first and create-if-missing options
  - Parallel decompression support
  - Progress tracking with phases

Phase 1 (Core Functionality) complete and tested
This commit is contained in:
2025-11-07 09:41:44 +00:00
parent 33d53612d2
commit 87e0ca3b39
12 changed files with 3222 additions and 19 deletions

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@ -0,0 +1,411 @@
package tui
import (
"fmt"
"os"
"path/filepath"
"sort"
"strings"
"time"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/lipgloss"
"dbbackup/internal/config"
"dbbackup/internal/logger"
"dbbackup/internal/restore"
)
var (
archiveHeaderStyle = lipgloss.NewStyle().
Bold(true).
Foreground(lipgloss.Color("#7D56F4"))
archiveSelectedStyle = lipgloss.NewStyle().
Foreground(lipgloss.Color("#FF75B7")).
Bold(true)
archiveNormalStyle = lipgloss.NewStyle().
Foreground(lipgloss.Color("#626262"))
archiveValidStyle = lipgloss.NewStyle().
Foreground(lipgloss.Color("#04B575"))
archiveInvalidStyle = lipgloss.NewStyle().
Foreground(lipgloss.Color("#FF6B6B"))
archiveOldStyle = lipgloss.NewStyle().
Foreground(lipgloss.Color("#FFA500"))
)
// ArchiveInfo holds information about a backup archive
type ArchiveInfo struct {
Name string
Path string
Format restore.ArchiveFormat
Size int64
Modified time.Time
DatabaseName string
Valid bool
ValidationMsg string
}
// ArchiveBrowserModel for browsing and selecting backup archives
type ArchiveBrowserModel struct {
config *config.Config
logger logger.Logger
parent tea.Model
archives []ArchiveInfo
cursor int
loading bool
err error
mode string // "restore-single", "restore-cluster", "manage"
filterType string // "all", "postgres", "mysql", "cluster"
message string
}
// NewArchiveBrowser creates a new archive browser
func NewArchiveBrowser(cfg *config.Config, log logger.Logger, parent tea.Model, mode string) ArchiveBrowserModel {
return ArchiveBrowserModel{
config: cfg,
logger: log,
parent: parent,
loading: true,
mode: mode,
filterType: "all",
}
}
func (m ArchiveBrowserModel) Init() tea.Cmd {
return loadArchives(m.config, m.logger)
}
type archiveListMsg struct {
archives []ArchiveInfo
err error
}
func loadArchives(cfg *config.Config, log logger.Logger) tea.Cmd {
return func() tea.Msg {
backupDir := cfg.BackupDir
// Check if backup directory exists
if _, err := os.Stat(backupDir); err != nil {
return archiveListMsg{archives: nil, err: fmt.Errorf("backup directory not found: %s", backupDir)}
}
// List all files
files, err := os.ReadDir(backupDir)
if err != nil {
return archiveListMsg{archives: nil, err: fmt.Errorf("cannot read backup directory: %w", err)}
}
var archives []ArchiveInfo
for _, file := range files {
if file.IsDir() {
continue
}
name := file.Name()
format := restore.DetectArchiveFormat(name)
if format == restore.FormatUnknown {
continue // Skip non-backup files
}
info, _ := file.Info()
fullPath := filepath.Join(backupDir, name)
// Extract database name
dbName := extractDBNameFromFilename(name)
// Basic validation (just check if file is readable)
valid := true
validationMsg := "Valid"
if info.Size() == 0 {
valid = false
validationMsg = "Empty file"
}
archives = append(archives, ArchiveInfo{
Name: name,
Path: fullPath,
Format: format,
Size: info.Size(),
Modified: info.ModTime(),
DatabaseName: dbName,
Valid: valid,
ValidationMsg: validationMsg,
})
}
// Sort by modification time (newest first)
sort.Slice(archives, func(i, j int) bool {
return archives[i].Modified.After(archives[j].Modified)
})
return archiveListMsg{archives: archives, err: nil}
}
}
func (m ArchiveBrowserModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
switch msg := msg.(type) {
case archiveListMsg:
m.loading = false
if msg.err != nil {
m.err = msg.err
return m, nil
}
m.archives = m.filterArchives(msg.archives)
if len(m.archives) == 0 {
m.message = "No backup archives found"
}
return m, nil
case tea.KeyMsg:
switch msg.String() {
case "ctrl+c", "q", "esc":
return m.parent, nil
case "up", "k":
if m.cursor > 0 {
m.cursor--
}
case "down", "j":
if m.cursor < len(m.archives)-1 {
m.cursor++
}
case "f":
// Toggle filter
filters := []string{"all", "postgres", "mysql", "cluster"}
for i, f := range filters {
if f == m.filterType {
m.filterType = filters[(i+1)%len(filters)]
break
}
}
m.cursor = 0
return m, loadArchives(m.config, m.logger)
case "enter", " ":
if len(m.archives) > 0 && m.cursor < len(m.archives) {
selected := m.archives[m.cursor]
// Validate selection based on mode
if m.mode == "restore-cluster" && !selected.Format.IsClusterBackup() {
m.message = errorStyle.Render("❌ Please select a cluster backup (.tar.gz)")
return m, nil
}
if m.mode == "restore-single" && selected.Format.IsClusterBackup() {
m.message = errorStyle.Render("❌ Please select a single database backup")
return m, nil
}
// Open restore preview
preview := NewRestorePreview(m.config, m.logger, m.parent, selected, m.mode)
return preview, preview.Init()
}
case "i":
// Show detailed info
if len(m.archives) > 0 && m.cursor < len(m.archives) {
selected := m.archives[m.cursor]
m.message = fmt.Sprintf("📦 %s | Format: %s | Size: %s | Modified: %s",
selected.Name,
selected.Format.String(),
formatSize(selected.Size),
selected.Modified.Format("2006-01-02 15:04:05"))
}
}
}
return m, nil
}
func (m ArchiveBrowserModel) View() string {
var s strings.Builder
// Header
title := "📦 Backup Archives"
if m.mode == "restore-single" {
title = "📦 Select Archive to Restore (Single Database)"
} else if m.mode == "restore-cluster" {
title = "📦 Select Archive to Restore (Cluster)"
}
s.WriteString(titleStyle.Render(title))
s.WriteString("\n\n")
if m.loading {
s.WriteString(infoStyle.Render("Loading archives..."))
return s.String()
}
if m.err != nil {
s.WriteString(errorStyle.Render(fmt.Sprintf("❌ Error: %v", m.err)))
s.WriteString("\n\n")
s.WriteString(infoStyle.Render("Press Esc to go back"))
return s.String()
}
// Filter info
filterLabel := "Filter: " + m.filterType
s.WriteString(infoStyle.Render(filterLabel))
s.WriteString(infoStyle.Render(" (Press 'f' to change filter)"))
s.WriteString("\n\n")
// Archives list
if len(m.archives) == 0 {
s.WriteString(infoStyle.Render(m.message))
s.WriteString("\n\n")
s.WriteString(infoStyle.Render("Press Esc to go back"))
return s.String()
}
// Column headers
s.WriteString(archiveHeaderStyle.Render(fmt.Sprintf("%-40s %-25s %-12s %-20s",
"FILENAME", "FORMAT", "SIZE", "MODIFIED")))
s.WriteString("\n")
s.WriteString(strings.Repeat("─", 100))
s.WriteString("\n")
// Show archives (limit to visible area)
start := m.cursor - 5
if start < 0 {
start = 0
}
end := start + 10
if end > len(m.archives) {
end = len(m.archives)
}
for i := start; i < end; i++ {
archive := m.archives[i]
cursor := " "
style := archiveNormalStyle
if i == m.cursor {
cursor = ">"
style = archiveSelectedStyle
}
// Color code based on validity and age
statusIcon := "✓"
if !archive.Valid {
statusIcon = "✗"
style = archiveInvalidStyle
} else if time.Since(archive.Modified) > 30*24*time.Hour {
style = archiveOldStyle
statusIcon = "⚠"
}
filename := truncate(archive.Name, 38)
format := truncate(archive.Format.String(), 23)
line := fmt.Sprintf("%s %s %-38s %-23s %-10s %-19s",
cursor,
statusIcon,
filename,
format,
formatSize(archive.Size),
archive.Modified.Format("2006-01-02 15:04"))
s.WriteString(style.Render(line))
s.WriteString("\n")
}
// Footer
s.WriteString("\n")
if m.message != "" {
s.WriteString(m.message)
s.WriteString("\n")
}
s.WriteString(infoStyle.Render(fmt.Sprintf("Total: %d archive(s) | Selected: %d/%d",
len(m.archives), m.cursor+1, len(m.archives))))
s.WriteString("\n")
s.WriteString(infoStyle.Render("⌨️ ↑/↓: Navigate | Enter: Select | f: Filter | i: Info | Esc: Back"))
return s.String()
}
// filterArchives filters archives based on current filter setting
func (m ArchiveBrowserModel) filterArchives(archives []ArchiveInfo) []ArchiveInfo {
if m.filterType == "all" {
return archives
}
var filtered []ArchiveInfo
for _, archive := range archives {
switch m.filterType {
case "postgres":
if archive.Format.IsPostgreSQL() && !archive.Format.IsClusterBackup() {
filtered = append(filtered, archive)
}
case "mysql":
if archive.Format.IsMySQL() {
filtered = append(filtered, archive)
}
case "cluster":
if archive.Format.IsClusterBackup() {
filtered = append(filtered, archive)
}
}
}
return filtered
}
// extractDBNameFromFilename extracts database name from archive filename
func extractDBNameFromFilename(filename string) string {
base := filepath.Base(filename)
// Remove extensions
base = strings.TrimSuffix(base, ".tar.gz")
base = strings.TrimSuffix(base, ".dump.gz")
base = strings.TrimSuffix(base, ".sql.gz")
base = strings.TrimSuffix(base, ".dump")
base = strings.TrimSuffix(base, ".sql")
// Remove timestamp patterns (YYYYMMDD_HHMMSS)
parts := strings.Split(base, "_")
for i := len(parts) - 1; i >= 0; i-- {
// Check if part looks like a date or time
if len(parts[i]) == 8 || len(parts[i]) == 6 {
parts = parts[:i]
} else {
break
}
}
if len(parts) > 0 {
return parts[0]
}
return base
}
// formatSize formats file size
func formatSize(bytes int64) string {
const unit = 1024
if bytes < unit {
return fmt.Sprintf("%d B", bytes)
}
div, exp := int64(unit), 0
for n := bytes / unit; n >= unit; n /= unit {
div *= unit
exp++
}
return fmt.Sprintf("%.1f %cB", float64(bytes)/float64(div), "KMGTPE"[exp])
}
// truncate truncates string to max length
func truncate(s string, max int) string {
if len(s) <= max {
return s
}
return s[:max-3] + "..."
}

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@ -0,0 +1,230 @@
package tui
import (
"fmt"
"os"
"strings"
"time"
tea "github.com/charmbracelet/bubbletea"
"dbbackup/internal/config"
"dbbackup/internal/logger"
)
// BackupManagerModel manages backup archives
type BackupManagerModel struct {
config *config.Config
logger logger.Logger
parent tea.Model
archives []ArchiveInfo
cursor int
loading bool
err error
message string
totalSize int64
freeSpace int64
}
// NewBackupManager creates a new backup manager
func NewBackupManager(cfg *config.Config, log logger.Logger, parent tea.Model) BackupManagerModel {
return BackupManagerModel{
config: cfg,
logger: log,
parent: parent,
loading: true,
}
}
func (m BackupManagerModel) Init() tea.Cmd {
return loadArchives(m.config, m.logger)
}
func (m BackupManagerModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
switch msg := msg.(type) {
case archiveListMsg:
m.loading = false
if msg.err != nil {
m.err = msg.err
return m, nil
}
m.archives = msg.archives
// Calculate total size
m.totalSize = 0
for _, archive := range m.archives {
m.totalSize += archive.Size
}
// Get free space (simplified - just show message)
m.message = fmt.Sprintf("Loaded %d archive(s)", len(m.archives))
return m, nil
case tea.KeyMsg:
switch msg.String() {
case "ctrl+c", "q", "esc":
return m.parent, nil
case "up", "k":
if m.cursor > 0 {
m.cursor--
}
case "down", "j":
if m.cursor < len(m.archives)-1 {
m.cursor++
}
case "v":
// Verify archive
if len(m.archives) > 0 && m.cursor < len(m.archives) {
selected := m.archives[m.cursor]
m.message = fmt.Sprintf("🔍 Verifying %s...", selected.Name)
// In real implementation, would run verification
}
case "d":
// Delete archive (with confirmation)
if len(m.archives) > 0 && m.cursor < len(m.archives) {
selected := m.archives[m.cursor]
confirm := NewConfirmationModel(m.config, m.logger, m,
"🗑️ Delete Archive",
fmt.Sprintf("Delete archive '%s'? This cannot be undone.", selected.Name))
return confirm, nil
}
case "i":
// Show info
if len(m.archives) > 0 && m.cursor < len(m.archives) {
selected := m.archives[m.cursor]
m.message = fmt.Sprintf("📦 %s | %s | %s | Modified: %s",
selected.Name,
selected.Format.String(),
formatSize(selected.Size),
selected.Modified.Format("2006-01-02 15:04:05"))
}
case "r":
// Restore selected archive
if len(m.archives) > 0 && m.cursor < len(m.archives) {
selected := m.archives[m.cursor]
mode := "restore-single"
if selected.Format.IsClusterBackup() {
mode = "restore-cluster"
}
preview := NewRestorePreview(m.config, m.logger, m.parent, selected, mode)
return preview, preview.Init()
}
case "R":
// Refresh list
m.loading = true
m.message = "Refreshing..."
return m, loadArchives(m.config, m.logger)
}
}
return m, nil
}
func (m BackupManagerModel) View() string {
var s strings.Builder
// Title
s.WriteString(titleStyle.Render("🗄️ Backup Archive Manager"))
s.WriteString("\n\n")
if m.loading {
s.WriteString(infoStyle.Render("Loading archives..."))
return s.String()
}
if m.err != nil {
s.WriteString(errorStyle.Render(fmt.Sprintf("❌ Error: %v", m.err)))
s.WriteString("\n\n")
s.WriteString(infoStyle.Render("Press Esc to go back"))
return s.String()
}
// Summary
s.WriteString(infoStyle.Render(fmt.Sprintf("Total Archives: %d | Total Size: %s",
len(m.archives), formatSize(m.totalSize))))
s.WriteString("\n\n")
// Archives list
if len(m.archives) == 0 {
s.WriteString(infoStyle.Render("No backup archives found"))
s.WriteString("\n\n")
s.WriteString(infoStyle.Render("Press Esc to go back"))
return s.String()
}
// Column headers
s.WriteString(archiveHeaderStyle.Render(fmt.Sprintf("%-35s %-25s %-12s %-20s",
"FILENAME", "FORMAT", "SIZE", "MODIFIED")))
s.WriteString("\n")
s.WriteString(strings.Repeat("─", 95))
s.WriteString("\n")
// Show archives (limit to visible area)
start := m.cursor - 5
if start < 0 {
start = 0
}
end := start + 12
if end > len(m.archives) {
end = len(m.archives)
}
for i := start; i < end; i++ {
archive := m.archives[i]
cursor := " "
style := archiveNormalStyle
if i == m.cursor {
cursor = ">"
style = archiveSelectedStyle
}
// Status icon
statusIcon := "✓"
if !archive.Valid {
statusIcon = "✗"
style = archiveInvalidStyle
} else if time.Since(archive.Modified) > 30*24*time.Hour {
statusIcon = "⚠"
}
filename := truncate(archive.Name, 33)
format := truncate(archive.Format.String(), 23)
line := fmt.Sprintf("%s %s %-33s %-23s %-10s %-19s",
cursor,
statusIcon,
filename,
format,
formatSize(archive.Size),
archive.Modified.Format("2006-01-02 15:04"))
s.WriteString(style.Render(line))
s.WriteString("\n")
}
// Footer
s.WriteString("\n")
if m.message != "" {
s.WriteString(infoStyle.Render(m.message))
s.WriteString("\n")
}
s.WriteString(infoStyle.Render(fmt.Sprintf("Selected: %d/%d", m.cursor+1, len(m.archives))))
s.WriteString("\n")
s.WriteString(infoStyle.Render("⌨️ ↑/↓: Navigate | r: Restore | v: Verify | d: Delete | i: Info | R: Refresh | Esc: Back"))
return s.String()
}
// deleteArchive deletes a backup archive (to be called from confirmation)
func deleteArchive(archivePath string) error {
return os.Remove(archivePath)
}

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@ -82,6 +82,11 @@ func NewMenuModel(cfg *config.Config, log logger.Logger) MenuModel {
"Single Database Backup",
"Sample Database Backup (with ratio)",
"Cluster Backup (all databases)",
"────────────────────────────────",
"Restore Single Database",
"Restore Cluster Backup",
"List & Manage Backups",
"────────────────────────────────",
"View Active Operations",
"Show Operation History",
"Database Status & Health Check",
@ -153,17 +158,27 @@ func (m MenuModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
return m.handleSampleBackup()
case 2: // Cluster Backup
return m.handleClusterBackup()
case 3: // View Active Operations
case 3: // Separator
// Do nothing
case 4: // Restore Single Database
return m.handleRestoreSingle()
case 5: // Restore Cluster Backup
return m.handleRestoreCluster()
case 6: // List & Manage Backups
return m.handleBackupManager()
case 7: // Separator
// Do nothing
case 8: // View Active Operations
return m.handleViewOperations()
case 4: // Show Operation History
case 9: // Show Operation History
return m.handleOperationHistory()
case 5: // Database Status
case 10: // Database Status
return m.handleStatus()
case 6: // Settings
case 11: // Settings
return m.handleSettings()
case 7: // Clear History
case 12: // Clear History
m.message = "🗑️ History cleared"
case 8: // Quit
case 13: // Quit
if m.cancel != nil {
m.cancel()
}
@ -281,6 +296,28 @@ func (m MenuModel) handleSettings() (tea.Model, tea.Cmd) {
return settingsModel, nil
}
// handleRestoreSingle opens archive browser for single restore
func (m MenuModel) handleRestoreSingle() (tea.Model, tea.Cmd) {
browser := NewArchiveBrowser(m.config, m.logger, m, "restore-single")
return browser, browser.Init()
}
// handleRestoreCluster opens archive browser for cluster restore
func (m MenuModel) handleRestoreCluster() (tea.Model, tea.Cmd) {
if !m.config.IsPostgreSQL() {
m.message = errorStyle.Render("❌ Cluster restore is available only for PostgreSQL")
return m, nil
}
browser := NewArchiveBrowser(m.config, m.logger, m, "restore-cluster")
return browser, browser.Init()
}
// handleBackupManager opens backup management view
func (m MenuModel) handleBackupManager() (tea.Model, tea.Cmd) {
manager := NewBackupManager(m.config, m.logger, m)
return manager, manager.Init()
}
func (m *MenuModel) applyDatabaseSelection() {
if m == nil || len(m.dbTypes) == 0 {
return

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@ -0,0 +1,286 @@
package tui
import (
"context"
"fmt"
"strings"
"time"
tea "github.com/charmbracelet/bubbletea"
"dbbackup/internal/config"
"dbbackup/internal/database"
"dbbackup/internal/logger"
"dbbackup/internal/restore"
)
// RestoreExecutionModel handles restore execution with progress
type RestoreExecutionModel struct {
config *config.Config
logger logger.Logger
parent tea.Model
archive ArchiveInfo
targetDB string
cleanFirst bool
createIfMissing bool
restoreType string
// Progress tracking
status string
phase string
progress int
details []string
startTime time.Time
// Results
done bool
err error
result string
elapsed time.Duration
}
// NewRestoreExecution creates a new restore execution model
func NewRestoreExecution(cfg *config.Config, log logger.Logger, parent tea.Model, archive ArchiveInfo, targetDB string, cleanFirst, createIfMissing bool, restoreType string) RestoreExecutionModel {
return RestoreExecutionModel{
config: cfg,
logger: log,
parent: parent,
archive: archive,
targetDB: targetDB,
cleanFirst: cleanFirst,
createIfMissing: createIfMissing,
restoreType: restoreType,
status: "Initializing...",
phase: "Starting",
startTime: time.Now(),
details: []string{},
}
}
func (m RestoreExecutionModel) Init() tea.Cmd {
return tea.Batch(
executeRestoreWithTUIProgress(m.config, m.logger, m.archive, m.targetDB, m.cleanFirst, m.createIfMissing, m.restoreType),
restoreTickCmd(),
)
}
type restoreTickMsg time.Time
func restoreTickCmd() tea.Cmd {
return tea.Tick(time.Millisecond*200, func(t time.Time) tea.Msg {
return restoreTickMsg(t)
})
}
type restoreProgressMsg struct {
status string
phase string
progress int
detail string
}
type restoreCompleteMsg struct {
result string
err error
elapsed time.Duration
}
func executeRestoreWithTUIProgress(cfg *config.Config, log logger.Logger, archive ArchiveInfo, targetDB string, cleanFirst, createIfMissing bool, restoreType string) tea.Cmd {
return func() tea.Msg {
ctx, cancel := context.WithTimeout(context.Background(), 2*time.Hour)
defer cancel()
start := time.Now()
// Create database instance
dbClient, err := database.New(cfg, log)
if err != nil {
return restoreCompleteMsg{
result: "",
err: fmt.Errorf("failed to create database client: %w", err),
elapsed: time.Since(start),
}
}
defer dbClient.Close()
// Create restore engine
engine := restore.New(cfg, log, dbClient)
// Execute restore based on type
var restoreErr error
if restoreType == "restore-cluster" {
restoreErr = engine.RestoreCluster(ctx, archive.Path)
} else {
restoreErr = engine.RestoreSingle(ctx, archive.Path, targetDB, cleanFirst, createIfMissing)
}
if restoreErr != nil {
return restoreCompleteMsg{
result: "",
err: restoreErr,
elapsed: time.Since(start),
}
}
result := fmt.Sprintf("Successfully restored from %s", archive.Name)
if restoreType == "restore-single" {
result = fmt.Sprintf("Successfully restored '%s' from %s", targetDB, archive.Name)
}
return restoreCompleteMsg{
result: result,
err: nil,
elapsed: time.Since(start),
}
}
}
func (m RestoreExecutionModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
switch msg := msg.(type) {
case restoreTickMsg:
if !m.done {
m.progress = (m.progress + 2) % 100
m.elapsed = time.Since(m.startTime)
return m, restoreTickCmd()
}
return m, nil
case restoreProgressMsg:
m.status = msg.status
m.phase = msg.phase
m.progress = msg.progress
if msg.detail != "" {
m.details = append(m.details, msg.detail)
// Keep only last 5 details
if len(m.details) > 5 {
m.details = m.details[len(m.details)-5:]
}
}
return m, nil
case restoreCompleteMsg:
m.done = true
m.err = msg.err
m.result = msg.result
m.elapsed = msg.elapsed
if m.err == nil {
m.status = "Completed"
m.phase = "Done"
m.progress = 100
} else {
m.status = "Failed"
m.phase = "Error"
}
return m, nil
case tea.KeyMsg:
switch msg.String() {
case "ctrl+c":
if !m.done {
m.status = "Cancelling..."
// In real implementation, would cancel context
}
return m, nil
case "enter", " ", "q", "esc":
if m.done {
return m.parent, nil
}
}
}
return m, nil
}
func (m RestoreExecutionModel) View() string {
var s strings.Builder
// Title
title := "💾 Restoring Database"
if m.restoreType == "restore-cluster" {
title = "💾 Restoring Cluster"
}
s.WriteString(titleStyle.Render(title))
s.WriteString("\n\n")
// Archive info
s.WriteString(fmt.Sprintf("Archive: %s\n", m.archive.Name))
if m.restoreType == "restore-single" {
s.WriteString(fmt.Sprintf("Target: %s\n", m.targetDB))
}
s.WriteString("\n")
if m.done {
// Show result
if m.err != nil {
s.WriteString(errorStyle.Render("❌ Restore Failed"))
s.WriteString("\n\n")
s.WriteString(errorStyle.Render(fmt.Sprintf("Error: %v", m.err)))
s.WriteString("\n")
} else {
s.WriteString(successStyle.Render("✅ Restore Completed Successfully"))
s.WriteString("\n\n")
s.WriteString(successStyle.Render(m.result))
s.WriteString("\n")
}
s.WriteString(fmt.Sprintf("\nElapsed Time: %s\n", formatDuration(m.elapsed)))
s.WriteString("\n")
s.WriteString(infoStyle.Render("⌨️ Press Enter to continue"))
} else {
// Show progress
s.WriteString(fmt.Sprintf("Phase: %s\n", m.phase))
s.WriteString(fmt.Sprintf("Status: %s\n", m.status))
s.WriteString("\n")
// Progress bar
progressBar := renderProgressBar(m.progress)
s.WriteString(progressBar)
s.WriteString(fmt.Sprintf(" %d%%\n", m.progress))
s.WriteString("\n")
// Details
if len(m.details) > 0 {
s.WriteString(infoStyle.Render("Recent activity:"))
s.WriteString("\n")
for _, detail := range m.details {
s.WriteString(fmt.Sprintf(" • %s\n", detail))
}
s.WriteString("\n")
}
// Elapsed time
s.WriteString(fmt.Sprintf("Elapsed: %s\n", formatDuration(m.elapsed)))
s.WriteString("\n")
s.WriteString(infoStyle.Render("⌨️ Press Ctrl+C to cancel"))
}
return s.String()
}
// renderProgressBar renders a text progress bar
func renderProgressBar(percent int) string {
width := 40
filled := (percent * width) / 100
bar := strings.Repeat("█", filled)
empty := strings.Repeat("░", width-filled)
return successStyle.Render(bar) + infoStyle.Render(empty)
}
// formatDuration formats duration in human readable format
func formatDuration(d time.Duration) string {
if d < time.Minute {
return fmt.Sprintf("%.1fs", d.Seconds())
}
if d < time.Hour {
minutes := int(d.Minutes())
seconds := int(d.Seconds()) % 60
return fmt.Sprintf("%dm %ds", minutes, seconds)
}
hours := int(d.Hours())
minutes := int(d.Minutes()) % 60
return fmt.Sprintf("%dh %dm", hours, minutes)
}

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@ -0,0 +1,324 @@
package tui
import (
"context"
"fmt"
"strings"
"time"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/lipgloss"
"dbbackup/internal/config"
"dbbackup/internal/logger"
"dbbackup/internal/restore"
)
var (
previewBoxStyle = lipgloss.NewStyle().
Border(lipgloss.RoundedBorder()).
BorderForeground(lipgloss.Color("#7D56F4")).
Padding(1, 2)
checkPassedStyle = lipgloss.NewStyle().
Foreground(lipgloss.Color("#04B575"))
checkFailedStyle = lipgloss.NewStyle().
Foreground(lipgloss.Color("#FF6B6B"))
checkWarningStyle = lipgloss.NewStyle().
Foreground(lipgloss.Color("#FFA500"))
checkPendingStyle = lipgloss.NewStyle().
Foreground(lipgloss.Color("#626262"))
)
// SafetyCheck represents a pre-restore safety check
type SafetyCheck struct {
Name string
Status string // "pending", "checking", "passed", "failed", "warning"
Message string
Critical bool
}
// RestorePreviewModel shows restore preview and safety checks
type RestorePreviewModel struct {
config *config.Config
logger logger.Logger
parent tea.Model
archive ArchiveInfo
mode string
targetDB string
cleanFirst bool
createIfMissing bool
safetyChecks []SafetyCheck
checking bool
canProceed bool
message string
}
// NewRestorePreview creates a new restore preview
func NewRestorePreview(cfg *config.Config, log logger.Logger, parent tea.Model, archive ArchiveInfo, mode string) RestorePreviewModel {
// Default target database name from archive
targetDB := archive.DatabaseName
if targetDB == "" {
targetDB = cfg.Database
}
return RestorePreviewModel{
config: cfg,
logger: log,
parent: parent,
archive: archive,
mode: mode,
targetDB: targetDB,
cleanFirst: false,
createIfMissing: true,
checking: true,
safetyChecks: []SafetyCheck{
{Name: "Archive integrity", Status: "pending", Critical: true},
{Name: "Disk space", Status: "pending", Critical: true},
{Name: "Required tools", Status: "pending", Critical: true},
{Name: "Target database", Status: "pending", Critical: false},
},
}
}
func (m RestorePreviewModel) Init() tea.Cmd {
return runSafetyChecks(m.config, m.logger, m.archive, m.targetDB)
}
type safetyCheckCompleteMsg struct {
checks []SafetyCheck
canProceed bool
}
func runSafetyChecks(cfg *config.Config, log logger.Logger, archive ArchiveInfo, targetDB string) tea.Cmd {
return func() tea.Msg {
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
safety := restore.NewSafety(cfg, log)
checks := []SafetyCheck{}
canProceed := true
// 1. Archive integrity
check := SafetyCheck{Name: "Archive integrity", Status: "checking", Critical: true}
if err := safety.ValidateArchive(archive.Path); err != nil {
check.Status = "failed"
check.Message = err.Error()
canProceed = false
} else {
check.Status = "passed"
check.Message = "Valid backup archive"
}
checks = append(checks, check)
// 2. Disk space
check = SafetyCheck{Name: "Disk space", Status: "checking", Critical: true}
multiplier := 3.0
if archive.Format.IsClusterBackup() {
multiplier = 4.0
}
if err := safety.CheckDiskSpace(archive.Path, multiplier); err != nil {
check.Status = "warning"
check.Message = err.Error()
// Not critical - just warning
} else {
check.Status = "passed"
check.Message = "Sufficient space available"
}
checks = append(checks, check)
// 3. Required tools
check = SafetyCheck{Name: "Required tools", Status: "checking", Critical: true}
dbType := "postgres"
if archive.Format.IsMySQL() {
dbType = "mysql"
}
if err := safety.VerifyTools(dbType); err != nil {
check.Status = "failed"
check.Message = err.Error()
canProceed = false
} else {
check.Status = "passed"
check.Message = "All required tools available"
}
checks = append(checks, check)
// 4. Target database check
check = SafetyCheck{Name: "Target database", Status: "checking", Critical: false}
exists, err := safety.CheckDatabaseExists(ctx, targetDB)
if err != nil {
check.Status = "warning"
check.Message = fmt.Sprintf("Cannot check: %v", err)
} else if exists {
check.Status = "warning"
check.Message = fmt.Sprintf("Database '%s' exists - will be overwritten if clean-first enabled", targetDB)
} else {
check.Status = "passed"
check.Message = fmt.Sprintf("Database '%s' does not exist - will be created", targetDB)
}
checks = append(checks, check)
return safetyCheckCompleteMsg{checks: checks, canProceed: canProceed}
}
}
func (m RestorePreviewModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
switch msg := msg.(type) {
case safetyCheckCompleteMsg:
m.checking = false
m.safetyChecks = msg.checks
m.canProceed = msg.canProceed
return m, nil
case tea.KeyMsg:
switch msg.String() {
case "ctrl+c", "q", "esc":
return m.parent, nil
case "t":
// Toggle clean-first
m.cleanFirst = !m.cleanFirst
m.message = fmt.Sprintf("Clean-first: %v", m.cleanFirst)
case "c":
// Toggle create if missing
m.createIfMissing = !m.createIfMissing
m.message = fmt.Sprintf("Create if missing: %v", m.createIfMissing)
case "enter", " ":
if m.checking {
m.message = "Please wait for safety checks to complete..."
return m, nil
}
if !m.canProceed {
m.message = errorStyle.Render("❌ Cannot proceed - critical safety checks failed")
return m, nil
}
// Proceed to restore execution
exec := NewRestoreExecution(m.config, m.logger, m.parent, m.archive, m.targetDB, m.cleanFirst, m.createIfMissing, m.mode)
return exec, exec.Init()
}
}
return m, nil
}
func (m RestorePreviewModel) View() string {
var s strings.Builder
// Title
title := "🔍 Restore Preview"
if m.mode == "restore-cluster" {
title = "🔍 Cluster Restore Preview"
}
s.WriteString(titleStyle.Render(title))
s.WriteString("\n\n")
// Archive Information
s.WriteString(archiveHeaderStyle.Render("📦 Archive Information"))
s.WriteString("\n")
s.WriteString(fmt.Sprintf(" File: %s\n", m.archive.Name))
s.WriteString(fmt.Sprintf(" Format: %s\n", m.archive.Format.String()))
s.WriteString(fmt.Sprintf(" Size: %s\n", formatSize(m.archive.Size)))
s.WriteString(fmt.Sprintf(" Created: %s\n", m.archive.Modified.Format("2006-01-02 15:04:05")))
if m.archive.DatabaseName != "" {
s.WriteString(fmt.Sprintf(" Database: %s\n", m.archive.DatabaseName))
}
s.WriteString("\n")
// Target Information (only for single restore)
if m.mode == "restore-single" {
s.WriteString(archiveHeaderStyle.Render("🎯 Target Information"))
s.WriteString("\n")
s.WriteString(fmt.Sprintf(" Database: %s\n", m.targetDB))
s.WriteString(fmt.Sprintf(" Host: %s:%d\n", m.config.Host, m.config.Port))
cleanIcon := "✗"
if m.cleanFirst {
cleanIcon = "✓"
}
s.WriteString(fmt.Sprintf(" Clean First: %s %v\n", cleanIcon, m.cleanFirst))
createIcon := "✗"
if m.createIfMissing {
createIcon = "✓"
}
s.WriteString(fmt.Sprintf(" Create If Missing: %s %v\n", createIcon, m.createIfMissing))
s.WriteString("\n")
}
// Safety Checks
s.WriteString(archiveHeaderStyle.Render("🛡️ Safety Checks"))
s.WriteString("\n")
if m.checking {
s.WriteString(infoStyle.Render(" Running safety checks..."))
s.WriteString("\n")
} else {
for _, check := range m.safetyChecks {
icon := "○"
style := checkPendingStyle
switch check.Status {
case "passed":
icon = "✓"
style = checkPassedStyle
case "failed":
icon = "✗"
style = checkFailedStyle
case "warning":
icon = "⚠"
style = checkWarningStyle
case "checking":
icon = "⟳"
style = checkPendingStyle
}
line := fmt.Sprintf(" %s %s", icon, check.Name)
if check.Message != "" {
line += fmt.Sprintf(" ... %s", check.Message)
}
s.WriteString(style.Render(line))
s.WriteString("\n")
}
}
s.WriteString("\n")
// Warnings
if m.cleanFirst {
s.WriteString(checkWarningStyle.Render("⚠️ Warning: Clean-first enabled"))
s.WriteString("\n")
s.WriteString(infoStyle.Render(" All existing data in target database will be dropped!"))
s.WriteString("\n\n")
}
// Message
if m.message != "" {
s.WriteString(m.message)
s.WriteString("\n\n")
}
// Footer
if m.checking {
s.WriteString(infoStyle.Render("⌨️ Please wait..."))
} else if m.canProceed {
s.WriteString(successStyle.Render("✅ Ready to restore"))
s.WriteString("\n")
if m.mode == "restore-single" {
s.WriteString(infoStyle.Render("⌨️ t: Toggle clean-first | c: Toggle create | Enter: Proceed | Esc: Cancel"))
} else {
s.WriteString(infoStyle.Render("⌨️ Enter: Proceed | Esc: Cancel"))
}
} else {
s.WriteString(errorStyle.Render("❌ Cannot proceed - please fix errors above"))
s.WriteString("\n")
s.WriteString(infoStyle.Render("⌨️ Esc: Go back"))
}
return s.String()
}