package goadb

import (
	"fmt"
	"regexp"
	"strconv"
	"strings"
)

// Get the current focussed app package name
func (d *Device) GetCurrentAppPackage() (string, error) {
	data, err := d.RunCommand("shell dumpsys activity activities | grep ResumedActivity")
	re := regexp.MustCompile(`\b([a-zA-Z0-9._]+)/(?:[a-zA-Z0-9._]+)\b`)
	matches := re.FindStringSubmatch(string(data))

	if len(matches) > 1 {
		return matches[1], nil
	} else {
		return "", nil
	}
	return "", err
}

// Get the pid for a app
func (d *Device) GetAppPid(appackage string) (int, error) {
	data, err := d.RunCommand(fmt.Sprintf("shell pidof %s"))
	if err != nil {
		return -1, err
	}

	pid, err := strconv.Atoi(strings.TrimSpace(string(data)))
	if err != nil {
		return -1, err
	}

	return pid, nil
}

// Check if a app is running
func (d *Device) CheckAppRunning(appackage string) (bool, error) {
	pid, err := d.GetAppPid(appackage)
	if err != nil {
		return false, err
	}
	if pid != -1 {
		return true, nil
	}
	return false, nil
}

// Start a app using the package name
func (d *Device) StartApp(appackage string) error {
	_, err := d.RunCommand(fmt.Sprintf("shell monkey -p %s com.yourstoryinteractive.sails.pirate.adventure -c android.intent.category.LAUNCHER 1"))
	return err
}

// Force kill a running app
func (d *Device) KillApp(appackage string) error {
	_, err := d.RunCommand(fmt.Sprintf("shell am force-stop %s"))
	return err
}