package main

import (
	"context"
	"encoding/json"
	"fmt"
	"io/fs"
	"os"

	"github.com/estebangarcia21/subprocess"
	"github.com/wailsapp/wails/v2/pkg/runtime"
)

type Server struct {
	Name string `json:"name"`
	Dir  string `json:"dir"`
	Cmd  string `json:"cmd"`
	Url  string `json:"url"`
	Port string `json:"port"`
	Run  string `json:"run"`
}

func (s *Server) Start() {
	os.Chdir(s.Dir)
	//s := subprocess.New(".\\"+name+".exe")
	p := subprocess.New(s.Cmd)
	p.ExecAsync()
}

// App struct
type App struct {
	ctx context.Context
}

// NewApp creates a new App application struct
func NewApp() *App {
	return &App{}
}

// startup is called when the app starts. The context is saved
// so we can call the runtime methods
func (a *App) startup(ctx context.Context) {
	a.ctx = ctx
	// runtime.WindowFullscreen(ctx)
}

// Greet returns a greeting for the given name
func (a *App) Greet(name string) string {
	return fmt.Sprintf("Hello %s, It's show time!", name)
}

func startLocalServer(name, dir, cmd string) {
	//os.Chdir("d:\\projects\\" + name);
	os.Chdir(dir)
	//s := subprocess.New(".\\"+name+".exe")
	s := subprocess.New(cmd)
	s.ExecAsync()
}

// StartServer - запускает сервер на выполнение
func (a *App) StartServer(s string) string {
	runtime.LogInfo(a.ctx, s)
	var server Server
	if err := json.Unmarshal([]byte(s), &server); err != nil {
		runtime.LogError(a.ctx, err.Error())
	}
	runtime.LogInfo(a.ctx, fmt.Sprintf("server: %v", server))

	server.Url = fmt.Sprintf("http://localhost:%s", server.Port)
	server.Start()
	runtime.BrowserOpenURL(a.ctx, server.Url)

	return "starting server"
}

func (a *App) Weed() {
	os.Chdir("d:\\projects\\sw4-nano\\util")
	//s := subprocess.New(".\\"+name+".exe")
	cmd := "py scanpics.py"
	s := subprocess.New(cmd)
	err := s.Exec()
	if err != nil {
		runtime.LogError(a.ctx, err.Error())
	}
	runtime.LogInfo(a.ctx, fmt.Sprintf("команда выполнена успешно"))
}

func getCountPics(dir string) int {
	pics, err := os.ReadDir("d:\\pics")
	if err != nil {
		return -1
	}
	return len(pics)
}

// The `getCountReady` function is counting the number of files (excluding directories) in a
// specified directory. It uses the `fs.WalkDir` function to walk through the file tree starting
// from the given directory within a file system. For each file encountered during the walk, it
// increments a counter if the file is not a directory. Finally, it returns the total count of
// files found in the directory.
func getCountReady(ctx context.Context, dir string) int {
	root := dir
	fileSystem := os.DirFS(root)

	cnt := 0
	fs.WalkDir(fileSystem, ".", func(path string, d fs.DirEntry, err error) error {
		if err != nil {
			runtime.LogError(ctx, err.Error())
		}
		if !d.IsDir() {
			cnt += 1
		}
		return nil
	})
	return cnt
}

func (a *App) GetStatus() string {
	pics := getCountPics("d:\\pics")
	ready := getCountReady(a.ctx, "d:\\pics-move")
	return fmt.Sprintf("%d/%d", pics, ready)
}