package main

import (
	"fmt"
	"io"
	"os"

	"github.com/spf13/cobra"
	"netdome.biz/paul/qmk-rgb/internal/device"
)

// version is set at build time via -ldflags.
var version = "dev"

var (
	targetDevice string
	targetZone   string
)

func newRootCommand() *cobra.Command {
	cmd := &cobra.Command{
		Use:           "qmk-rgb-tool",
		Short:         "QMK RGB CLI — control QMK keyboard lighting",
		SilenceErrors: true,
		SilenceUsage:  true,
	}
	cmd.PersistentFlags().StringVar(&targetDevice, "device", "", "Keyboard number as printed by 'keyboard info', starting at 1")
	cmd.PersistentFlags().StringVar(&targetZone, "zone", "", "RGB lighting zone (logo, backlight, side)")
	// The zone name is resolved against the connected board, which needs
	// enumeration but no HID handle, so an unknown name still fails before
	// anything is opened. openTarget does the resolving.
	cmd.PersistentPreRunE = func(*cobra.Command, []string) error {
		_, err := prepareTarget()
		return err
	}
	return cmd
}

var rootCmd = newRootCommand()

func Execute() {
	if err := rootCmd.Execute(); err != nil {
		fmt.Fprintf(os.Stderr, "Error: %v\n", err)
		os.Exit(1)
	}
}

func main() {
	Execute()
}

var keyboardCmd = &cobra.Command{
	Use:   "keyboard",
	Short: "Keyboard management commands",
}

// discoverAll is a seam for tests.
var discoverAll = device.DiscoverAll

// runKeyboardInfo writes the connected QMK keyboards as JSON. The 1-based
// index that --device accepts travels in the "index" field, so the command
// emits no human-readable banner alongside it.
func runKeyboardInfo(out io.Writer) error {
	devices, err := discoverAll()
	if err != nil {
		return err
	}

	if devices == nil {
		devices = []device.Device{}
	}

	type info struct {
		Devices []device.Device `json:"devices"`
		Total   int             `json:"total"`
	}
	return encodeJSON(out, info{Devices: devices, Total: len(devices)})
}

var keyboardInfoCmd = &cobra.Command{
	Use:   "info",
	Short: "Discover connected QMK keyboards",
	Long: "Scan for connected QMK keyboards and print device info as JSON.\n" +
		"Each device carries the 1-based index that --device accepts.",
	RunE: func(cmd *cobra.Command, args []string) error {
		return runKeyboardInfo(cmd.OutOrStdout())
	},
}

func init() {
	rootCmd.AddCommand(keyboardCmd)
	keyboardCmd.AddCommand(keyboardInfoCmd)

	rootCmd.AddCommand(NewEnableCmd())
	rootCmd.AddCommand(NewDisableCmd())
	rootCmd.AddCommand(NewInfoCmd())
	rootCmd.AddCommand(NewEffectCmd())
	rootCmd.AddCommand(NewBrightnessCmd())
	rootCmd.AddCommand(NewSpeedCmd())
	rootCmd.AddCommand(NewColorCmd())
	rootCmd.AddCommand(NewModeCmd())
	rootCmd.AddCommand(NewProfileSaveCmd())
	rootCmd.AddCommand(NewProfileLoadCmd())
	rootCmd.AddCommand(NewProfileListCmd())
	rootCmd.AddCommand(NewProfileDeleteCmd())

	rootCmd.Version = version
	rootCmd.SetVersionTemplate("	qmk-rgb-tool {{.Version}}\n")
}