add templates for kontor-gin

kontor-gin/pkg/controllers/auth.go

@@ -0,0 +1,93 @@
+package controllers
+
+import (
+	"kontor-api-gin/pkg/globals"
+	"kontor-api-gin/pkg/helpers"
+	"log"
+	"net/http"
+
+	"github.com/gin-contrib/sessions"
+
+	"github.com/gin-gonic/gin"
+)
+
+func LoginGetHandler(c *gin.Context) {
+	session := sessions.Default(c)
+	user := session.Get(globals.UserKey)
+	if user != nil {
+		c.HTML(http.StatusBadRequest, "login.tmpl", gin.H{
+			"title":   "Kontor Gin",
+			"version": "0.4.0",
+			"content": "Please logout first",
+			"user":    user,
+		})
+		return
+	}
+	c.HTML(http.StatusOK, "login.tmpl", gin.H{
+		"title":   "Kontor Gin",
+		"version": "0.4.0",
+		"content": "",
+		"user":    user,
+	})
+}
+
+func LoginPostHandler(c *gin.Context) {
+	session := sessions.Default(c)
+	user := session.Get(globals.UserKey)
+	if user != nil {
+		c.HTML(http.StatusBadRequest, "login.tmpl", gin.H{
+			"title":   "Kontor Gin",
+			"version": "0.4.0",
+			"content": "Please logout first",
+		})
+		return
+	}
+
+	username := c.PostForm("username")
+	password := c.PostForm("password")
+
+	if helpers.EmptyUserPass(username, password) {
+		c.HTML(http.StatusBadRequest, "login.tmpl", gin.H{
+			"title":   "Kontor Gin",
+			"version": "0.4.0",
+			"content": "Parameters can't be empty",
+		})
+	}
+
+	if !helpers.CheckUserPass(username, password) {
+		c.HTML(http.StatusUnauthorized, "login.tmpl", gin.H{
+			"title":   "Kontor Gin",
+			"version": "0.4.0",
+			"content": "Incorrect username or password",
+		})
+	}
+
+	session.Set(globals.UserKey, username)
+	if err := session.Save(); err != nil {
+		c.HTML(http.StatusInternalServerError, "login.tmpl", gin.H{
+			"title":   "Kontor Gin",
+			"version": "0.4.0",
+			"content": "Failed to save session",
+		})
+		return
+	}
+
+	c.Redirect(http.StatusMovedPermanently, "/")
+}
+
+func LogoutGetHandler(c *gin.Context) {
+	session := sessions.Default(c)
+	user := session.Get(globals.UserKey)
+	log.Printf("logging out user %v", user)
+	if user == nil {
+		log.Println("Invalid session token")
+		return
+	}
+	session.Delete(globals.UserKey)
+	if err := session.Save(); err != nil {
+		log.Printf("Failed to save session: %v", err)
+		return
+	}
+
+	c.Redirect(http.StatusMovedPermanently, "/")
+}