swb6-it-sec/Lab01/app/webpage/webpage.go

package webpage

import (
	"app/database"
	"github.com/gin-contrib/static"
	"github.com/gin-gonic/gin"
	"net/http"
)

func (wp *Webpage) redirectHome(c *gin.Context) {
	c.Redirect(http.StatusTemporaryRedirect, "/")
}

func (wp *Webpage) userIsLoggedIn(c *gin.Context) bool {
	if wp.isLoggedIn {
		wp.redirectHome(c)
		return true
	}
	return false
}

func (wp *Webpage) defineRoutes() {

	wp.Router.GET("/", func(c *gin.Context) {
		c.HTML(http.StatusOK, "index.tmpl", gin.H{
			"title":    "SuperSafe",
			"loggedIn": wp.isLoggedIn,
		})
	})

	wp.Router.GET("/login", func(c *gin.Context) {
		if wp.userIsLoggedIn(c) {
			return
		}
		c.HTML(http.StatusOK, "login.tmpl", gin.H{
			"title":    "Login",
			"loggedIn": wp.isLoggedIn,
		})
	})

	wp.Router.GET("/logout", func(c *gin.Context) {
		wp.isLoggedIn = false
		wp.redirectHome(c)
	})

	wp.Router.GET("/register", func(c *gin.Context) {
		wp.userIsLoggedIn(c)
		c.HTML(http.StatusOK, "register.tmpl", gin.H{
			"title":    "Register",
			"loggedIn": wp.isLoggedIn,
		})
	})

	wp.Router.POST("/login", func(c *gin.Context) {
		username, uExisting := c.GetPostForm("username")
		password, pExisting := c.GetPostForm("password")
		if uExisting == false || pExisting == false || username == "" || password == "" {
			c.JSON(400, gin.H{"message": "bad post form"})
			return
		}
		success, err := wp.Database.LoginUser(username, password)
		if err != nil {
			c.JSON(500, gin.H{"message": err.Error()})
			return
		}
		if success == true {
			wp.isLoggedIn = true
			c.JSON(200, gin.H{"message": "login successfull"})
			return
		}
		wp.isLoggedIn = false
		c.JSON(401, gin.H{"message": "user or password not found"})
	})

	wp.Router.POST("/register", func(c *gin.Context) {
		username, uExisting := c.GetPostForm("username")
		password, pExisting := c.GetPostForm("password")
		if uExisting == false || pExisting == false || username == "" || password == "" {
			c.JSON(400, gin.H{"message": "bad post form"})
			return
		}
		err := wp.Database.CreateUser(username, password)
		if err != nil {
			c.JSON(500, gin.H{"message": err.Error()})
			return
		}
		c.JSON(200, gin.H{"message": "user registered"})
	})

	wp.Router.NoRoute(func(c *gin.Context) {
		wp.redirectHome(c)
	})
}

func (wp *Webpage) initialize() {
	wp.Database = database.Database{Location: "sqlite.db"}
	wp.Database.Initialize()
}

func (wp *Webpage) Run() {
	wp.initialize()
	wp.Router = gin.New()
	wp.Router.Use(gin.Recovery())
	wp.Router.SetTrustedProxies(nil)
	wp.Router.Use(static.Serve("/static", static.LocalFile("./static", false)))
	wp.Router.LoadHTMLGlob("templates/*")
	wp.defineRoutes()
	wp.Router.Run()
}