// Package editor opens files in the user's preferred text editor.
package editor

import (
	"fmt"
	"os"
	"os/exec"
	"runtime"
)

// commonEditors mirrors utils.py's fallback editor list.
var commonEditors = []string{"code", "subl", "atom", "vim", "nano", "notepad"}

// GetEditorCommand returns the command for the system's default editor,
// prioritizing EDITOR/VISUAL env vars, then falling back to common editors.
func GetEditorCommand() string {
	if editor := os.Getenv("EDITOR"); editor != "" {
		return editor
	}
	if editor := os.Getenv("VISUAL"); editor != "" {
		return editor
	}

	editors := commonEditors
	if runtime.GOOS == "windows" {
		editors = append([]string{"notepad"}, editors...)
	}

	for _, cmd := range editors {
		if path, err := exec.LookPath(cmd); err == nil {
			return path
		}
	}

	return ""
}

// OpenFileInEditor opens a file in the system default editor. Returns true
// if successful, false otherwise.
func OpenFileInEditor(filePath string) bool {
	editor := GetEditorCommand()
	if editor == "" {
		fmt.Println("❌ No editor found. Please set EDITOR or VISUAL environment variable")
		return false
	}

	cmd := exec.Command(editor, filePath)
	cmd.Stdin = os.Stdin
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr

	if err := cmd.Run(); err != nil {
		fmt.Printf("❌ Failed to open editor: %v\n", err)
		return false
	}
	return true
}