package cmds

import (
	"context"
	"html"
	"html/template"
	"log"
	"path/filepath"
	"strings"
	"time"

	"github.com/gofiber/fiber/v3"
	"github.com/gofiber/fiber/v3/extractors"
	"github.com/gofiber/fiber/v3/middleware/session"
	"github.com/gofiber/fiber/v3/middleware/static"
	"github.com/gofiber/storage/sqlite3/v2"
	fiber_html "github.com/gofiber/template/html/v3"
	"github.com/gofiber/utils/v2"
	"github.com/spf13/cobra"
	"github.com/yuin/goldmark"
	"github.com/yuin/goldmark/extension"
	"lmika.dev/lmika/weiro/config"
	"lmika.dev/lmika/weiro/handlers"
	"lmika.dev/lmika/weiro/handlers/middleware"
	"lmika.dev/lmika/weiro/services"
)

func Root() *cobra.Command {
	cmd := &cobra.Command{
		Use:   "weiro",
		Short: "Weiro is a simple blogging platform",
		Long: `Weiro is a simple blogging platform.

Starting weiro without any arguments will start the server.
`,
		Run: func(cmd *cobra.Command, args []string) {
			cfg, err := config.LoadConfig()
			if err != nil {
				log.Fatal(err)
			}

			svcs, err := services.New(cfg)
			if err != nil {
				log.Fatal(err)
			}
			defer svcs.Close()

			svcs.PublisherQueue.Start(context.Background())

			fiberTemplate := fiber_html.New("./views", ".html")
			fiberTemplate.Funcmap["sub"] = func(x, y int) int { return x - y }
			fiberTemplate.Funcmap["markdown"] = func() func(s string) template.HTML {
				mdParser := goldmark.New(
					goldmark.WithExtensions(extension.GFM),
				)
				return func(s string) template.HTML {
					var sb strings.Builder
					if err := mdParser.Convert([]byte(s), &sb); err != nil {
						return template.HTML("Markdown error: " + html.EscapeString(err.Error()))
					}
					return template.HTML(sb.String())
				}
			}()

			// Initialize custom config
			store := sqlite3.New(sqlite3.Config{
				Database:        filepath.Join(cfg.DataDir, "./fiber.db"),
				Table:           "fiber_storage",
				Reset:           false,
				GCInterval:      10 * time.Second,
				MaxOpenConns:    100,
				MaxIdleConns:    100,
				ConnMaxLifetime: 1 * time.Second,
			})

			app := fiber.New(fiber.Config{
				Views:             fiberTemplate,
				ViewsLayout:       "layouts/main",
				PassLocalsToViews: true,
			})
			app.Use(session.New(session.Config{
				// Storage
				Storage: store,

				// Security
				CookieSecure:   cfg.IsProd(),
				CookieSameSite: "Lax",

				// Session Management
				IdleTimeout:     24 * time.Hour,     // Inactivity timeout
				AbsoluteTimeout: 7 * 24 * time.Hour, // Maximum session duration

				// Cookie Settings
				CookiePath:        "/",
				CookieDomain:      cfg.SiteDomain,
				CookieSessionOnly: false, // Persist across browser restarts

				// Session ID
				Extractor:    extractors.FromCookie("__wro-session_id"),
				KeyGenerator: utils.SecureToken,

				// Error Handling
				ErrorHandler: func(c fiber.Ctx, err error) {
					log.Printf("Session error: %v", err)
				},
			}))

			ih := handlers.IndexHandler{SiteService: svcs.Sites}
			lh := handlers.LoginHandler{Config: cfg, AuthService: svcs.Auth}
			ph := handlers.PostsHandler{PostService: svcs.Posts}
			uh := handlers.UploadsHandler{UploadsService: svcs.Uploads}

			app.Get("/login", lh.Login)
			app.Post("/login", lh.DoLogin)
			app.Post("/logout", lh.Logout)

			siteGroup := app.Group("/sites/:siteID", middleware.RequireUser(svcs.Auth), middleware.RequiresSite(svcs.Sites))

			siteGroup.Get("/posts", ph.Index)
			siteGroup.Get("/posts/new", ph.New)
			siteGroup.Get("/posts/:postID", ph.Edit)
			siteGroup.Post("/posts", ph.Update)
			siteGroup.Patch("/posts/:postID", ph.Patch)
			siteGroup.Delete("/posts/:postID", ph.Delete)

			siteGroup.Get("/uploads", uh.Index)
			siteGroup.Get("/uploads/:uploadID", uh.Show)
			siteGroup.Get("/uploads/:uploadID/raw", uh.ShowRaw)
			siteGroup.Post("/uploads/pending", uh.New)
			siteGroup.Post("/uploads/pending/:guid", uh.UploadPart)
			siteGroup.Post("/uploads/pending/:guid/finalize", uh.UploadComplete)

			app.Get("/", middleware.OptionalUser(svcs.Auth), ih.Index)
			app.Get("/first-run", ih.FirstRun)
			app.Post("/first-run", ih.FirstRunSubmit)

			app.Get("/static/*", static.New("./static"))

			if err := app.Listen(":3000"); err != nil {
				log.Println(err)
			}
		},
	}
	cmd.AddCommand(Sites())
	cmd.AddCommand(PubTargets())
	return cmd
}