package main

import (
	"bytes"
	"context"
	"flag"
	"fmt"
	"github.com/gofiber/fiber/v2"
	"github.com/gofiber/fiber/v2/middleware/encryptcookie"
	"github.com/gofiber/fiber/v2/middleware/filesystem"
	"github.com/gofiber/template/html/v2"
	"github.com/yuin/goldmark"
	"html/template"
	"lmika.dev/lmika/hugo-cms/assets"
	"lmika.dev/lmika/hugo-cms/config"
	"lmika.dev/lmika/hugo-cms/handlers"
	"lmika.dev/lmika/hugo-cms/providers/db"
	"lmika.dev/lmika/hugo-cms/providers/git"
	"lmika.dev/lmika/hugo-cms/providers/hugo"
	"lmika.dev/lmika/hugo-cms/providers/netlify"
	"lmika.dev/lmika/hugo-cms/providers/themes"
	"lmika.dev/lmika/hugo-cms/services/jobs"
	"lmika.dev/lmika/hugo-cms/services/posts"
	"lmika.dev/lmika/hugo-cms/services/sitebuilder"
	"lmika.dev/lmika/hugo-cms/services/sites"
	"lmika.dev/lmika/hugo-cms/services/users"
	"lmika.dev/lmika/hugo-cms/templates"
	"log"
	"net/http"
)

func main() {
	flagGenKey := flag.Bool("gen-key", false, "Generate a new key")
	flagUser := flag.String("user", "", "add new user")
	flagPassword := flag.String("password", "", "add new password")
	flag.Parse()

	if *flagGenKey {
		fmt.Println(encryptcookie.GenerateKey())
		return
	}

	cfg, err := config.Load()
	if err != nil {
		log.Fatal(err)
	}

	dbp, err := db.New(cfg.DatabaseURL)
	if err != nil {
		log.Fatal(err)
	}
	defer dbp.Close()

	userService := users.NewService(dbp)

	if *flagUser != "" {
		if _, err := userService.AddUser(context.Background(), users.NewUser{
			Email:    *flagUser,
			Password: *flagPassword,
		}); err != nil {
			log.Fatal(err)
		}
		log.Println("User added")
		return
	}

	hugoProvider, err := hugo.New(cfg.StagingDir(), cfg.ScratchDir())
	if err != nil {
		log.Fatal(err)
	}
	gitProvider := git.New()
	themesProvider := themes.New()
	netlifyProvider := netlify.New(cfg.NetlifyAuthToken)

	jobService := jobs.New()
	siteBuilderService := sitebuilder.New(dbp, themesProvider, gitProvider, hugoProvider, netlifyProvider)

	siteService := sites.NewService(cfg, dbp, themesProvider, siteBuilderService, jobService)
	postService := posts.New(dbp, siteBuilderService, jobService)

	indexHandlers := handlers.IndexHandler{}
	siteHandlers := handlers.Site{Site: siteService}
	postHandlers := handlers.Post{Post: postService}
	authHandlers := handlers.AuthHandler{UserService: userService}

	log.Println("Connected to database")
	if err := dbp.Migrate(context.Background()); err != nil {
		log.Fatal(err)
	}

	log.Println("Database migrated")

	tmplEngine := html.NewFileSystem(http.FS(templates.FS), ".html")
	tmplEngine.Funcmap["markdown"] = func(s string) (template.HTML, error) {
		var buf bytes.Buffer
		if err := goldmark.Convert([]byte(s), &buf); err != nil {
			return "", err
		}
		return template.HTML(buf.String()), nil
	}

	if cfg.EncryptedCookieKey == "" {
		log.Println("No encrypt cookie key defined. Generating random key")
		cfg.EncryptedCookieKey = encryptcookie.GenerateKey()
	}

	app := fiber.New(fiber.Config{
		Views:             tmplEngine,
		PassLocalsToViews: true,
	})
	app.Use(encryptcookie.New(encryptcookie.Config{Key: cfg.EncryptedCookieKey}))

	app.Use("/assets", filesystem.New(filesystem.Config{Root: http.FS(assets.FS)}))

	app.Get("/auth/login", authHandlers.ShowLogin)
	app.Post("/auth/login", authHandlers.Login)
	app.Use(authHandlers.RequireAuth)

	app.Get("/", indexHandlers.Index)
	app.Post("/sites", siteHandlers.Create)
	app.Get("/sites/:siteId", siteHandlers.Show)

	app.Route("/sites/:siteId", func(r fiber.Router) {
		r.Use(siteHandlers.WithSite())
		r.Post("/rebuild", siteHandlers.Rebuild)

		r.Get("/posts", postHandlers.Posts)
		r.Get("/posts/new", postHandlers.New)
		r.Post("/posts", postHandlers.Create)
		r.Get("/posts/:postId", postHandlers.Edit)
		r.Post("/posts/:postId", postHandlers.Update)
		r.Delete("/posts/:postId", postHandlers.Delete)
	})

	jobService.Start()
	defer jobService.Stop()

	if err := app.Listen(":3000"); err != nil {
		log.Println(err)
	}

	log.Println("Shutting down...")
}