package cli

import (
	"fmt"
	"os"
	"path"

	"github.com/spf13/cobra"
)

var (
	// LookUpMode is the default behavior to look up workflow files.
	//
	// Valid values are:
	//   - "xdg": look up in XDG_CONFIG_HOME/qbitrun/workflows
	//   - "cwd": look up workflows dir in the current working directory
	//   - other: look up workflows dir in the same directory as the executable
	LookUpMode string
	Version    string
)

var RootCmd = &cobra.Command{
	Use:   "qbitrun",
	Short: "qbitrun is a CLI tool to handle qBittorrent pre/post processing tasks",
	Long:  "qbitrun is a CLI tool to handle qBittorrent pre/post processing tasks. It uses matchers defined in yaml files to determine which tasks to run on which torrents post download.",
	PersistentPreRun: func(cmd *cobra.Command, args []string) {
		if cmd.PersistentFlags().Changed("version") {
			fmt.Println(Version)
			os.Exit(0)
		}
	},
	Run: func(cmd *cobra.Command, args []string) {
		cmd.HelpFunc()(cmd, args)
	},
}

func init() {
	persistFlag := RootCmd.PersistentFlags()

	var workflowDir string
	switch LookUpMode {
	case "xdg":
		xdgConfigHome := os.Getenv("XDG_CONFIG_HOME")
		if xdgConfigHome == "" {
			xdgConfigHome = path.Join(os.Getenv("HOME"), ".config")
		}
		workflowDir = path.Join(xdgConfigHome, "qbitrun", "workflows")
	case "cwd":
		cwd, err := os.Getwd()
		if err != nil {
			panic(fmt.Errorf("failed to get current working directory: %w", err))
		}
		workflowDir = path.Join(cwd, "workflows")
	default:
		exe, err := os.Executable()
		if err != nil {
			panic(fmt.Errorf("failed to get executable path: %w", err))
		}
		workflowDir = path.Join(path.Dir(exe), "workflows")
	}

	persistFlag.StringP(
		"workflow-dir",
		"d",
		workflowDir,
		"Set the directory where the workflow yaml files are stored.")
	persistFlag.BoolP("version", "v", false, "Print the version of qbitrun and exit")
}