Big refactor

server/fiber.go

@@ -0,0 +1,172 @@
+package server
+
+import (
+	"time"
+
+	"git.phc.dm.unipi.it/phc/website/handler"
+	"git.phc.dm.unipi.it/phc/website/model"
+	"github.com/gofiber/fiber/v2"
+	"github.com/gofiber/fiber/v2/middleware/logger"
+	"github.com/gofiber/fiber/v2/middleware/recover"
+	"github.com/gofiber/redirect/v2"
+)
+
+func UserMiddleware(h handler.Service) fiber.Handler {
+	return func(c *fiber.Ctx) error {
+		token := c.Cookies("session-token")
+		user := h.HandleUser(token)
+		c.Locals("user", user)
+		return c.Next()
+	}
+}
+
+func CreateContext(ctx *fiber.Ctx) handler.Context {
+	// the "_" here is required because Go cannot cast <nil> of type interface{} to *model.User, in other words <nil> of type *model.User and <nil> of type interface{} are different type. In this case the "_" returns a boolean that tells whether the cast succeeded or not, if it is false the user variable gets assigned its default zero value that is <nil> of type *model.User
+	user, _ := ctx.Locals("user").(*model.User)
+
+	context := handler.Context{}
+	handler.SetContextValue(context, handler.UserKey, user)
+
+	return context
+}
+
+func NewFiberServer(h handler.Service) *fiber.App {
+	app := fiber.New()
+	routes(h, app)
+	return app
+}
+
+func routes(h handler.Service, r fiber.Router) {
+	//
+	// Initial setup
+	//
+
+	r.Use(logger.New())
+	r.Use(recover.New())
+
+	// Remove trailing slash from URLs
+	r.Use(redirect.New(redirect.Config{
+		Rules: map[string]string{
+			"/*/": "/$1",
+		},
+	}))
+
+	// Serve content statically from "./public", mounted on the "/public/" route
+	r.Static("/public/", "./public")
+
+	// Process all request and add user to the request context if there is a session cookie
+	r.Use(UserMiddleware(h))
+
+	//
+	// Pages
+	//
+
+	r.Get("/", func(c *fiber.Ctx) error {
+		c.Type("html")
+		return h.HandleStaticPage(c, "home.html", CreateContext(c))
+	})
+
+	r.Get("/link", func(c *fiber.Ctx) error {
+		c.Type("html")
+		return h.HandleStaticPage(c, "link.html", CreateContext(c))
+	})
+
+	r.Get("/login", func(c *fiber.Ctx) error {
+		c.Type("html")
+		return h.HandleStaticPage(c, "login.html", CreateContext(c))
+	})
+
+	r.Get("/utenti", func(c *fiber.Ctx) error {
+		c.Type("html")
+		return h.HandleStaticPage(c, "utenti.html", CreateContext(c))
+	})
+
+	r.Get("/storia", func(c *fiber.Ctx) error {
+		c.Type("html")
+		return h.HandleStoriaPage(c, CreateContext(c))
+	})
+
+	r.Get("/appunti", func(c *fiber.Ctx) error {
+		query := c.Query("q", "")
+
+		c.Type("html")
+		return h.HandleQueryAppunti(c, query, CreateContext(c))
+	})
+
+	r.Get("/news", func(c *fiber.Ctx) error {
+		c.Type("html")
+		return h.HandleNewsPage(c, CreateContext(c))
+	})
+
+	r.Post("/login", func(c *fiber.Ctx) error {
+		var loginForm struct {
+			Provider string `form:"provider"`
+			Username string `form:"username"`
+			Password string `form:"password"`
+		}
+
+		if err := c.BodyParser(&loginForm); err != nil {
+			return err
+		}
+
+		session, err := h.HandleLogin(loginForm.Username, loginForm.Password)
+		if err != nil {
+			return err
+		}
+
+		inThreeDays := time.Now().Add(3 * 24 * time.Hour)
+		c.Cookie(&fiber.Cookie{
+			Name:    "session-token",
+			Path:    "/",
+			Value:   session.Token,
+			Expires: inThreeDays,
+		})
+
+		return c.Redirect("/profilo")
+	})
+
+	r.Get("/profilo", func(c *fiber.Ctx) error {
+		c.Type("html")
+		return h.HandleProfilePage(c, CreateContext(c))
+	})
+
+	r.Get("/logout", func(c *fiber.Ctx) error {
+		c.Cookie(&fiber.Cookie{
+			Name:    "session-token",
+			Path:    "/",
+			Value:   "",
+			Expires: time.Now(),
+		})
+
+		return c.Redirect("/")
+	})
+
+	r.Get("/news/:article", func(c *fiber.Ctx) error {
+		articleID := c.Params("article")
+
+		c.Type("html")
+		return h.HandleArticlePage(c, articleID, CreateContext(c))
+	})
+
+	routesApi(h, r.Group("/api"))
+}
+
+func routesApi(h handler.Service, r fiber.Router) {
+	r.Get("/api/utenti", func(c *fiber.Ctx) error {
+		utenti, err := h.HandleUtenti()
+		if err != nil {
+			return err
+		}
+
+		return c.JSON(utenti)
+	})
+
+	r.Get("/api/profilo", func(c *fiber.Ctx) error {
+		user, err := h.HandleRequiredUser(CreateContext(c))
+		if err != nil {
+			return err
+		}
+
+		return c.JSON(user)
+	})
+}