package cli

import (
	"fmt"
	"os"
	"text/tabwriter"

	"github.com/claudomator/claudomator/internal/storage"
	"github.com/claudomator/claudomator/internal/task"
	"github.com/spf13/cobra"
)

func newListCmd() *cobra.Command {
	var state string

	cmd := &cobra.Command{
		Use:   "list",
		Short: "List tasks",
		RunE: func(cmd *cobra.Command, args []string) error {
			return listTasks(state)
		},
	}

	cmd.Flags().StringVar(&state, "state", "", "filter by state (PENDING, RUNNING, COMPLETED, FAILED)")

	return cmd
}

func listTasks(state string) error {
	store, err := storage.Open(cfg.DBPath)
	if err != nil {
		return fmt.Errorf("opening db: %w", err)
	}
	defer store.Close()

	filter := storage.TaskFilter{}
	if state != "" {
		filter.State = task.State(state)
	}

	tasks, err := store.ListTasks(filter)
	if err != nil {
		return err
	}

	if len(tasks) == 0 {
		fmt.Println("No tasks found.")
		return nil
	}

	w := tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0)
	fmt.Fprintln(w, "ID\tNAME\tSTATE\tPRIORITY\tCREATED")
	for _, t := range tasks {
		fmt.Fprintf(w, "%.8s\t%s\t%s\t%s\t%s\n",
			t.ID, t.Name, t.State, t.Priority, t.CreatedAt.Format("2006-01-02 15:04"))
	}
	w.Flush()
	return nil
}