package cmd

import (
	"fmt"
	"io"
	"os"
	"path/filepath"

	"github.com/spf13/cobra"
	"github.com/warrenronsiek/ctask/internal/config"
)

var notesCmd = &cobra.Command{
	Use:           "notes <query>",
	Short:         "Print a workspace's notes.md to stdout",
	Args:          cobra.ExactArgs(1),
	SilenceUsage:  true,
	SilenceErrors: true,
	RunE:          runNotes,
}

func init() {
	notesCmd.ValidArgsFunction = completeWorkspaces(completionAny)
	rootCmd.AddCommand(notesCmd)
}

// runNotes streams <workspace>/notes.md to stdout. SilenceErrors is enabled
// so the [ctask]-prefixed message we print to stderr is the only diagnostic
// the user sees — no Cobra "Error: ..." line on top of it.
func runNotes(cmd *cobra.Command, args []string) error {
	roots := config.SearchRoots()
	ws := resolveOne(roots, args[0], true)

	notesPath := filepath.Join(ws.Path, "notes.md")
	f, err := os.Open(notesPath)
	if err != nil {
		if os.IsNotExist(err) {
			fmt.Fprintf(os.Stderr, "[ctask] no notes.md found in workspace %q\n", args[0])
			return fmt.Errorf("notes.md missing")
		}
		fmt.Fprintf(os.Stderr, "[ctask] error reading notes.md: %v\n", err)
		return err
	}
	defer f.Close()

	if _, err := io.Copy(os.Stdout, f); err != nil {
		fmt.Fprintf(os.Stderr, "[ctask] error streaming notes.md: %v\n", err)
		return err
	}
	return nil
}