// Copyright 2015 The Vanadium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

import (
	"fmt"

	"v.io/x/lib/cmdline"
	"v.io/x/lib/gosh"
)

func init() {
	initializeIDCacheFlags(&cmdMadbClearData.Flags)
}

var cmdMadbClearData = &cmdline.Command{
	Runner: subCommandRunner{initMadbClearData, runMadbClearDataForDevice},
	Name:   "clear-data",
	Short:  "Clear your app data from all devices",
	Long: `
Clears your app data from all devices.

`,
	ArgsName: "[<application_id>]",
	ArgsLong: `
<application_id> is usually the package name where the activities are defined.
(See: http://tools.android.com/tech-docs/new-build-system/applicationid-vs-packagename)


If the application ID is not specified, madb automatically determines which app to be cleared, based
on the build scripts found in the current working directory.

If the working directory contains a Gradle Android project (i.e., has "build.gradle"), run a small
Gradle script to extract the application ID.  In this case, the extracted ID is cached, so that
"madb clear-data" can be repeated without even running the Gradle script again.  The ID can be
re-extracted by clearing the cache by providing "-clear-cache" flag.
`,
}

func initMadbClearData(env *cmdline.Env, args []string) ([]string, error) {
	return initMadbCommand(env, args, false, false)
}

func runMadbClearDataForDevice(env *cmdline.Env, args []string, d device) error {
	sh := gosh.NewShell(nil)
	defer sh.Cleanup()

	sh.ContinueOnError = true

	if len(args) == 1 {
		appID := args[0]

		// TODO(youngseokyoon): maybe do something equivalent for flutter?
		cmdArgs := []string{"-s", d.Serial, "shell", "pm", "clear", appID}
		cmd := sh.Cmd("adb", cmdArgs...)
		return runGoshCommandForDevice(cmd, d)
	}

	return fmt.Errorf("No arguments are provided and failed to extract the id from the build scripts.")
}