Working on the admin interface

+ Implemented login token
+ Routing
+ Admin controller
+ Login Page
* Updated `.env` example

lib/routes/routes_admin.go

@@ -0,0 +1,80 @@
+package routes
+
+import (
+	"encoding/hex"
+	"fmt"
+	"net/http"
+
+	"github.com/JustKato/FreePad/lib/controllers"
+	"github.com/JustKato/FreePad/lib/helper"
+	"github.com/gin-gonic/gin"
+
+	"crypto/sha512"
+)
+
+var adminLoginToken string = ""
+
+func AdminRoutes(router *gin.RouterGroup) {
+
+	adminLoginToken = helper.GetAdminToken()
+
+	// Apply the admin middleware for identification
+	controllers.AdminMiddleware(router)
+
+	// Admin login route
+	router.GET("/login", func(ctx *gin.Context) {
+		ctx.HTML(200, "admin_login.html", gin.H{
+			"title":       "Login Login",
+			"domain_base": helper.GetDomainBase(),
+		})
+	})
+
+	router.POST("/login", func(ctx *gin.Context) {
+
+		// Get the value of the admin token
+		adminToken := ctx.PostForm("admin-token")
+
+		// Check if the input admin token matches our admin token
+		if adminLoginToken != "" && adminLoginToken == adminToken {
+
+			sha512Hasher := sha512.New()
+			sha512Hasher.Write([]byte(adminToken))
+
+			// Set the cookie to be an admin
+			hashHexToken := sha512Hasher.Sum(nil)
+			hashToken := hex.EncodeToString(hashHexToken)
+
+			fmt.Println(hashToken)
+
+			// Set the cookie
+			ctx.SetCookie("admin_token", hashToken, 60*60, "/", helper.GetDomainBase(), true, true)
+
+			ctx.Request.Method = "GET"
+
+			// Redirect the user to the admin page
+			ctx.Redirect(http.StatusTemporaryRedirect, "/admin")
+			return
+		} else {
+			ctx.Request.Method = "GET"
+
+			// Redirect the user to the admin page
+			ctx.Redirect(http.StatusTemporaryRedirect, "/admin/login?fail")
+			return
+		}
+
+	})
+
+	// Admin view route
+	router.GET("/", func(ctx *gin.Context) {
+
+		adminToken, err := ctx.Cookie("admin_token")
+		if err != nil {
+			adminToken = ""
+		}
+
+		ctx.JSON(200, gin.H{
+			`adminToken`: adminToken,
+		})
+	})
+
+}