package main

import (
	"bufio"
	"log"
	"os/exec"
	"strings"

	"git.phc.dm.unipi.it/phc/storage/config"
	"git.phc.dm.unipi.it/phc/storage/database"
	"git.phc.dm.unipi.it/phc/storage/server"
	"git.phc.dm.unipi.it/phc/storage/serverinfo"

	"github.com/gofiber/fiber/v2"
	"github.com/gofiber/fiber/v2/middleware/logger"
	"github.com/gofiber/fiber/v2/middleware/recover"
)

func main() {
	//
	// Setup main services
	//

	db := database.NewJSON("database.local.json")

	serverinfoService := serverinfo.NewService(&serverinfo.Config{
		ScriptsDir:   "./scripts",
		CacheTimeout: config.MonitorCacheTimeout,
	})

	if err := serverinfoService.LoadScripts(); err != nil {
		panic(err)
	}

	//
	// Setup server
	//

	// The server wraps all application dependencies and provides "routing" methods
	server := server.New(db, serverinfoService)

	// We use go-fiber as the HTTP framework
	app := fiber.New()

	// Middlewares
	app.Use(logger.New())
	app.Use(recover.New())

	// Static files
	app.Static("/", "./_frontend/dist")

	// Setting up dynamic "single page application" routes (all routes these to the same html file)
	for _, route := range []string{
		"/",
		"/login",
		"/admin",
		"/api-keys",
		"/buckets",
		"/buckets/:bucket",
	} {
		app.Get(route, func(c *fiber.Ctx) error {
			return c.SendFile("./_frontend/dist/index.html")
		})
	}

	// Setup server routes

	app.Route("/api", server.Api)

	//
	// ViteJS development server
	//

	if strings.HasPrefix(config.Mode, "dev") {
		log.Printf(`Running dev server for frontend: "npm run dev"`)
		cmd := exec.Command("sh", "-c", "cd _frontend/ && npm run dev")
		cmdStdout, _ := cmd.StdoutPipe()

		go func() {
			s := bufio.NewScanner(cmdStdout)
			for s.Scan() {
				log.Printf("[ViteJS] %s", s.Text())
			}
			if err := s.Err(); err != nil {
				log.Fatal(err)
			}
		}()

		err := cmd.Start()
		if err != nil {
			log.Fatal(err)
		}
	}

	// Start backend the server
	log.Fatal(app.Listen(config.Host))
}