init: Initial commit

app/services/authorize.go

@@ -0,0 +1,50 @@
+package services
+
+import (
+	"encoding/base64"
+	"fmt"
+	"net/http"
+	"time"
+
+	"git.secnex.io/secnex/oauth2-api/models"
+	"git.secnex.io/secnex/oauth2-api/repositories"
+	"git.secnex.io/secnex/oauth2-api/utils"
+	"github.com/gofiber/fiber/v2"
+	"github.com/google/uuid"
+)
+
+type AuthorizeResponse struct {
+	Code  string `json:"code"`
+	State string `json:"state"`
+}
+
+func Authorize(userID, clientID, redirectURI, responseType, scope, state string) *utils.HTTPResponse {
+	application, err := repositories.GetApplicationByClientID(clientID)
+	if err != nil {
+		return utils.NewHTTPResponse(http.StatusUnauthorized, &fiber.Map{"error": "Application not found"}, "", nil, nil)
+	}
+	if application.ExpiresAt.Before(time.Now().UTC()) {
+		return utils.NewHTTPResponse(http.StatusUnauthorized, &fiber.Map{"error": "Application expired"}, "", nil, nil)
+	}
+	authorizationID := uuid.New()
+	authorizationCode := utils.GenerateRandomString(32)
+	authorization := &models.Authorization{
+		ID:       authorizationID,
+		Code:     authorizationCode,
+		ClientID: application.ID,
+		UserID:   uuid.MustParse(userID),
+	}
+	if err := repositories.CreateAuthorization(authorization); err != nil {
+		return utils.NewHTTPResponse(http.StatusInternalServerError, &fiber.Map{"error": "Failed to create authorization"}, "", nil, nil)
+	}
+
+	authorizationCodeString := fmt.Sprintf("%s:%s", authorizationID.String(), authorizationCode)
+	authorizationCodeBase64 := base64.StdEncoding.EncodeToString([]byte(authorizationCodeString))
+
+	response := AuthorizeResponse{
+		Code:  authorizationCodeBase64,
+		State: state,
+	}
+
+	return utils.NewHTTPResponse(http.StatusOK, &fiber.Map{"response": response}, "", nil, nil)
+}