package cli

import (
	"fmt"
	"os"

	"git.eeqj.de/sneak/vaultik/internal/config"
	"git.eeqj.de/sneak/vaultik/internal/log"
	"github.com/spf13/cobra"
)

// NewDatabaseCommand creates the database command group
func NewDatabaseCommand() *cobra.Command {
	cmd := &cobra.Command{
		Use:   "database",
		Short: "Manage the local state database",
		Long:  `Commands for managing the local SQLite state database.`,
	}

	cmd.AddCommand(
		newDatabasePurgeCommand(),
	)

	return cmd
}

// newDatabasePurgeCommand creates the database purge command
func newDatabasePurgeCommand() *cobra.Command {
	var force bool

	cmd := &cobra.Command{
		Use:   "purge",
		Short: "Delete the local state database",
		Long: `Completely removes the local SQLite state database.

This will erase all local tracking of:
- File metadata and change detection state
- Chunk and blob mappings
- Local snapshot records

The remote storage is NOT affected. After purging, the next backup will
perform a full scan and re-deduplicate against existing remote blobs.

Use --force to skip the confirmation prompt.`,
		Args: cobra.NoArgs,
		RunE: func(cmd *cobra.Command, args []string) error {
			// Resolve config path
			configPath, err := ResolveConfigPath()
			if err != nil {
				return err
			}

			// Load config to get database path
			cfg, err := config.Load(configPath)
			if err != nil {
				return fmt.Errorf("failed to load config: %w", err)
			}

			dbPath := cfg.IndexPath

			// Check if database exists
			if _, err := os.Stat(dbPath); os.IsNotExist(err) {
				fmt.Printf("Database does not exist: %s\n", dbPath)
				return nil
			}

			// Confirm unless --force
			if !force {
				fmt.Printf("This will delete the local state database at:\n  %s\n\n", dbPath)
				fmt.Print("Are you sure? Type 'yes' to confirm: ")
				var confirm string
				if _, err := fmt.Scanln(&confirm); err != nil || confirm != "yes" {
					fmt.Println("Aborted.")
					return nil
				}
			}

			// Delete the database file
			if err := os.Remove(dbPath); err != nil {
				return fmt.Errorf("failed to delete database: %w", err)
			}

			// Also delete WAL and SHM files if they exist
			walPath := dbPath + "-wal"
			shmPath := dbPath + "-shm"
			_ = os.Remove(walPath) // Ignore errors - files may not exist
			_ = os.Remove(shmPath)

			rootFlags := GetRootFlags()
			if !rootFlags.Quiet {
				fmt.Printf("Database purged: %s\n", dbPath)
			}

			log.Info("Local state database purged", "path", dbPath)
			return nil
		},
	}

	cmd.Flags().BoolVar(&force, "force", false, "Skip confirmation prompt")

	return cmd
}