package cmd

import (
	"io"
	"log"

	"github.com/david/knox/internal/db"
	"github.com/david/knox/internal/watch"
	"github.com/spf13/cobra"
)

func NewWatchCmd(kdb *db.KnoxDB) *cobra.Command {
	var dirs []string
	var quiet bool
	cmd := &cobra.Command{
		Use:   "watch",
		Short: "Watch directories for new session data and ingest into index",
		Run: func(cmd *cobra.Command, args []string) {
			if len(dirs) == 0 {
				dirs = defaultWatchDirs()
			}
			if quiet {
				log.SetOutput(io.Discard)
			}
			log.Printf("[knox] starting watcher, scanning %d directories", len(dirs))
			w := watch.New(kdb, dirs)
			if err := w.Start(); err != nil {
				log.Fatalf("watcher error: %v", err)
			}
		},
	}
	cmd.Flags().StringSliceVarP(&dirs, "dir", "d", nil, "Directories to watch (default: opencode storage/log + skills)")
	cmd.Flags().BoolVarP(&quiet, "quiet", "q", false, "Suppress per-entry log output")
	return cmd
}

func defaultWatchDirs() []string {
	home, _ := getHomeDir()
	return []string{
		home + "/.local/share/opencode/storage/session_diff",
		home + "/.local/share/opencode/log",
		home + "/.skills",
	}
}