feat(auth): Add login, register, session_info and api creation

app/services/login.go

@@ -0,0 +1,67 @@
+package services
+
+import (
+	"time"
+
+	"git.secnex.io/secnex/auth-api/config"
+	"git.secnex.io/secnex/auth-api/repositories"
+	"git.secnex.io/secnex/auth-api/utils"
+	"git.secnex.io/secnex/masterlog"
+	"github.com/gofiber/fiber/v2"
+	"github.com/golang-jwt/jwt/v5"
+)
+
+func Login(username, password string) *utils.HTTPResponse {
+	// Get user by username
+	user, err := repositories.GetUserByUsername(username)
+	if err != nil {
+		return utils.NewHTTPResponse(fiber.StatusNotFound, &fiber.Map{
+			"message": "User not found",
+		}, "", nil, nil)
+	}
+	if user == nil {
+		return utils.NewHTTPResponse(fiber.StatusNotFound, &fiber.Map{
+			"message": "User not found",
+		}, "", nil, nil)
+	}
+
+	hashedPassword := user.Password
+	valid, err := utils.Verify(password, hashedPassword)
+	if err != nil {
+		return utils.NewHTTPResponse(fiber.StatusInternalServerError, &fiber.Map{
+			"message": "Error verifying password",
+		}, "", nil, nil)
+	}
+	if !valid {
+		return utils.NewHTTPResponse(fiber.StatusUnauthorized, &fiber.Map{
+			"message": "Invalid password",
+		}, "", nil, nil)
+	}
+
+	session := repositories.CreateSession(user)
+	if session == nil {
+		return utils.NewHTTPResponse(fiber.StatusInternalServerError, &fiber.Map{
+			"message": "Error creating session",
+		}, "", nil, nil)
+	}
+
+	masterlog.Debug("Session created successfully", map[string]interface{}{"session_id": session.ID, "user_id": session.UserID})
+
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
+		"sub": session.ID.String(),
+		"exp": time.Now().Add(time.Hour * 24).Unix(),
+	})
+
+	secret := config.CONFIG.JwtSecret
+	tokenString, err := token.SignedString([]byte(secret))
+	if err != nil {
+		return utils.NewHTTPResponse(fiber.StatusInternalServerError, &fiber.Map{
+			"message": "Error generating token",
+		}, "", nil, nil)
+	}
+
+	return utils.NewHTTPResponse(fiber.StatusOK, &fiber.Map{
+		"message": "Login successful",
+		"token":   tokenString,
+	}, "", nil, nil)
+}