// Copyright © 2017-2018 Mikael Berthe <mikael@lilotux.net>

//

// Licensed under the MIT license.

// Please see the LICENSE file is this directory.

package cmd

import (

	"os"

	"github.com/mattn/go-isatty"

	"github.com/spf13/cobra"

	"github.com/spf13/viper"

	"github.com/McKael/madonctl/printer"

)

var configCmd = &cobra.Command{

	Use:   "config",

	Short: "Display configuration",

	Long: `Display configuration

Display current configuration.  You can use this command to generate an

initial configuration file (see the examples below).

This command is disabled if the safe_mode setting is set to true in the

configuration file.`,

	Example: `  madonctl config dump -i INSTANCE -L USERNAME -P PASS > config.yaml

  madonctl whoami

  madonctl whoami --template '{{.access_token}}'`,

}

func init() {

	RootCmd.AddCommand(configCmd)

	// Subcommands

	configCmd.AddCommand(configSubcommands...)

}

var configSubcommands = []*cobra.Command{

	&cobra.Command{

		Use:     "dump",

		Short:   "Dump the configuration",

		Example: `  madonctl config dump -i INSTANCE -L USERNAME -P PASS > config.yaml`,

		RunE: func(cmd *cobra.Command, args []string) error {

			return configDump()

		},

	},

	&cobra.Command{

		Use:     "whoami",

		Aliases: []string{"token"},

		Short:   "Display user token",

		RunE: func(cmd *cobra.Command, args []string) error {

			return configDisplayToken()

		},

	},

	&cobra.Command{

		Use: "themes",

		//Aliases: []string{},

		Short: "Display available themes",

		RunE: func(cmd *cobra.Command, args []string) error {

			return configDisplayThemes()

		},

	},

}

const configurationTemplate = `---

instance: '{{.InstanceURL}}'

app_id: '{{.ID}}'

app_secret: '{{.Secret}}'

{{if .UserToken}}token: {{.UserToken.access_token}}{{else}}#token: ''{{end}}

#login: ''

#password: ''

safe_mode: true

#default_visibility: unlisted

#template_directory: ''

#default_output: theme

#default_theme: ansi

#color: auto

#verbose: false

...

`

func configDump() error {

	if viper.GetBool("safe_mode") {

		errPrint("Cannot dump: disabled by configuration (safe_mode)")

		return nil

	}

	if err := madonInitClient(); err != nil {

		return err

	}

	// Try to sign in if a login was provided

	if viper.GetString("token") != "" || viper.GetString("login") != "" {

		if err := madonLogin(); err != nil {

			errPrint("Error: could not log in: %v", err)

			os.Exit(-1)

		}

	}

	var p printer.ResourcePrinter

	var err error

	if getOutputFormat() == "plain" {

		cfile := viper.ConfigFileUsed()

		if cfile == "" {

			cfile = defaultConfigFile

		}

		if isatty.IsTerminal(os.Stdout.Fd()) {

			errPrint("You can copy the following lines into a configuration file.")

			errPrint("E.g. %s -i INSTANCE -L USERNAME -P PASS config dump > %s", AppName, cfile)

			errPrint(" or  %s -i INSTANCE oauth2 > %s\n", AppName, cfile)

		}

		pOptions := printer.Options{"template": configurationTemplate}

		p, err = printer.NewPrinterTemplate(pOptions)

	} else {

		p, err = getPrinter()

	}

	if err != nil {

		errPrint("Error: %v", err)

		os.Exit(1)

	}

	return p.PrintObj(gClient, nil, "")

}

func configDisplayToken() error {

	if viper.GetBool("safe_mode") {

		errPrint("Cannot dump: disabled by configuration (safe_mode)")

		return nil

	}

	if err := madonInit(true); err != nil {

		return err

	}

	p, err := getPrinter()

	if err != nil {

		errPrint("Error: %v", err)

		os.Exit(1)

	}

	return p.printObj(gClient.UserToken)

}

// configDisplayThemes lists the available themes

// It is intended for shell completion.

func configDisplayThemes() error {

	var p printer.ResourcePrinter

	themes, err := getThemes()

	if err != nil {

		errPrint("Error: %v", err)

		os.Exit(1)

	}

	if getOutputFormat() == "plain" {

		pOptions := printer.Options{"template": `{{printf "%s\n" .}}`}

		p, err = printer.NewPrinterTemplate(pOptions)

	} else {

		p, err = getPrinter()

	}

	if err != nil {

		errPrint("Error: %v", err)

		os.Exit(1)

	}

	return p.PrintObj(themes, nil, "")

}