diff --git a/Migrate.md b/Migrate.md
new file mode 100644
index 0000000..66282d5
--- /dev/null
+++ b/Migrate.md
@@ -0,0 +1,54 @@
+## Migrating with Atlas
+
+### Overview
+
+Atlas provides a streamlined way to manage and migrate database schemas effortlessly. Follow the steps below to set up and migrate your database using Atlas.
+
+### Step-by-Step Guide
+
+#### 1. Installation
+
+Firstly, install Atlas using the provided script:
+
+```bash
+curl -sSf https://atlasgo.sh | sh
+```
+
+This will ensure you have the necessary tools to inspect and apply schema changes seamlessly.
+
+#### 2. Inspecting the Database and Generating Schema 
+
+Whenever you make changes to your database schema, you must update your schema definition. To do this, inspect your current database setup and generate a `schema.sql` file:
+
+```bash
+atlas schema inspect \
+  --url "postgres://postgres:123456@127.0.0.1:5432/postgres?search_path=public&sslmode=disable" \
+  --format "{{ sql . }}" > schema.sql
+```
+
+This command fetches the current schema structure and outputs it to a `schema.sql` file, ensuring you have an up-to-date representation of your database schema.
+
+#### 3. Applying Schema Changes
+
+Once you've made the necessary updates to the `schema.sql` file, you can apply these changes to your database:
+
+```bash
+atlas schema apply \
+  --url "postgres://postgres:123456@127.0.0.1:5432/postgres?&sslmode=disable" \
+  --to "file://schema.sql" \
+  --dev-url "docker://postgres/15"
+```
+
+Here's what each parameter does:
+
+- `--url`: Specifies the connection URL to your target database where changes will be applied.
+- `--to`: Indicates the path to the `schema.sql` file containing the schema changes.
+- `--dev-url`: Provides a development URL for rolling back changes if necessary, ensuring a safe migration process.
+
+#### 4. Confirm and Apply
+
+After executing the migration command, review the changes to ensure everything aligns with your expectations. If satisfied, proceed with the migration to finalize the schema changes in your database.
+
+---
+
+This improved documentation offers a structured approach, providing clarity on each step and its purpose.
\ No newline at end of file
diff --git a/apperror/error.go b/apperror/error.go
index 216ee94..a0cbfb8 100644
--- a/apperror/error.go
+++ b/apperror/error.go
@@ -21,4 +21,5 @@ var (
 	InvalidToken          = &AppError{"invalid-token", http.StatusUnauthorized}
 	InvalidEmail          = &AppError{"invalid-email", http.StatusNotFound}
 	DuplicateEmail        = &AppError{"duplicate-email", http.StatusConflict}
+	Unauthorized          = &AppError{"unauthorized", http.StatusUnauthorized}
 )
diff --git a/cmd/main.go b/cmd/main.go
index bd0981b..aab2be4 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -20,7 +20,6 @@ func main() {
 	r := gin.Default()
 
 	r.GET("/_hc", container.HcHandler.HealthCheck)
-	r.GET("/featureflag/live", container.FeatureflagHandler.GetLivestreamInfo)
 	r.GET("/live", container.FeatureflagHandler.GetLivestreamInfo)
 	r.GET("/events", container.EventHandler.GetAllEvents)
 	r.GET("/events/:eventId", container.EventHandler.GetEventById)
diff --git a/di/wire.go b/di/wire.go
index 97aec40..8a080f0 100644
--- a/di/wire.go
+++ b/di/wire.go
@@ -8,10 +8,10 @@ import (
 	"github.com/isd-sgcu/oph66-backend/cache"
 	"github.com/isd-sgcu/oph66-backend/cfgldr"
 	"github.com/isd-sgcu/oph66-backend/database"
+	auth "github.com/isd-sgcu/oph66-backend/internal/auth"
 	event "github.com/isd-sgcu/oph66-backend/internal/event"
 	featureflag "github.com/isd-sgcu/oph66-backend/internal/feature_flag"
 	healthcheck "github.com/isd-sgcu/oph66-backend/internal/health_check"
-	auth "github.com/isd-sgcu/oph66-backend/internal/auth"
 	"github.com/isd-sgcu/oph66-backend/logger"
 	"go.uber.org/zap"
 )
diff --git a/di/wire_gen.go b/di/wire_gen.go
index a00128f..bc65a40 100644
--- a/di/wire_gen.go
+++ b/di/wire_gen.go
@@ -44,8 +44,8 @@ func Init() (Container, error) {
 	featureflagCache := featureflag.NewCache(client, zapLogger)
 	featureflagHandler := featureflag.NewHandler(featureflagService, featureflagCache)
 	authRepository := auth.NewRepository(db)
-	authService := auth.NewService(authRepository, zapLogger)
-	authHandler := auth.NewHandler(authService, config, zapLogger)
+	authService := auth.NewService(authRepository, zapLogger, config)
+	authHandler := auth.NewHandler(authService, zapLogger)
 	container := newContainer(handler, healthcheckHandler, featureflagHandler, authHandler, config, zapLogger)
 	return container, nil
 }
diff --git a/go.mod b/go.mod
index 4274df6..3f11bc1 100644
--- a/go.mod
+++ b/go.mod
@@ -8,6 +8,8 @@ require (
 	github.com/redis/go-redis/v9 v9.3.0
 	github.com/spf13/viper v1.18.1
 	go.uber.org/zap v1.26.0
+	golang.org/x/oauth2 v0.15.0
+	google.golang.org/api v0.153.0
 	gorm.io/driver/postgres v1.5.4
 	gorm.io/gorm v1.25.5
 )
@@ -15,14 +17,8 @@ require (
 require (
 	cloud.google.com/go/compute v1.23.3 // indirect
 	cloud.google.com/go/compute/metadata v0.2.3 // indirect
-	github.com/coreos/go-oidc/v3 v3.9.0 // indirect
-	github.com/dgrijalva/jwt-go v3.2.0+incompatible // indirect
-	github.com/go-jose/go-jose/v3 v3.0.1 // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
-	github.com/pquerna/cachecontrol v0.2.0 // indirect
-	golang.org/x/oauth2 v0.15.0 // indirect
 	google.golang.org/appengine v1.6.8 // indirect
-	gopkg.in/square/go-jose.v2 v2.6.0 // indirect
 )
 
 require (
@@ -30,7 +26,6 @@ require (
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect
 	github.com/chenzhuoyu/iasm v0.9.1 // indirect
-	github.com/coreos/go-oidc v2.2.1+incompatible
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/fsnotify/fsnotify v1.7.0 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.3 // indirect
@@ -39,6 +34,9 @@ require (
 	github.com/go-playground/universal-translator v0.18.1 // indirect
 	github.com/go-playground/validator/v10 v10.16.0 // indirect
 	github.com/goccy/go-json v0.10.2 // indirect
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
+	github.com/google/s2a-go v0.1.7 // indirect
+	github.com/googleapis/enterprise-certificate-proxy v0.3.2 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect
 	github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a // indirect
@@ -63,6 +61,7 @@ require (
 	github.com/subosito/gotenv v1.6.0 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
 	github.com/ugorji/go/codec v1.2.12 // indirect
+	go.opencensus.io v0.24.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	golang.org/x/arch v0.6.0 // indirect
 	golang.org/x/crypto v0.16.0 // indirect
@@ -70,6 +69,8 @@ require (
 	golang.org/x/net v0.19.0 // indirect
 	golang.org/x/sys v0.15.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20231120223509-83a465c0220f // indirect
+	google.golang.org/grpc v1.59.0 // indirect
 	google.golang.org/protobuf v1.31.0 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
diff --git a/go.sum b/go.sum
index 50c289a..c8cf9da 100644
--- a/go.sum
+++ b/go.sum
@@ -1,8 +1,9 @@
-cloud.google.com/go v0.110.10 h1:LXy9GEO+timppncPIAZoOj3l58LIU9k+kn48AN7IO3Y=
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go/compute v1.23.3 h1:6sVlXXBmbd7jNX0Ipq0trII3e4n1/MsADLK6a+aiVlk=
 cloud.google.com/go/compute v1.23.3/go.mod h1:VCgBUoMnIVIR0CscqQiPJLAG25E3ZRZMzcFZeQ+h8CI=
 cloud.google.com/go/compute/metadata v0.2.3 h1:mg4jlk7mCAj6xXp9UJ4fjI9VUI5rubuGBW5aJ7UnBMY=
 cloud.google.com/go/compute/metadata v0.2.3/go.mod h1:VAV5nSsACxMJvgaAuX6Pk2AawlZn8kiOGuCv6gTkwuA=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/bsm/ginkgo/v2 v2.12.0 h1:Ny8MWAHyOepLGlLKYmXG4IEkioBysk6GpaRTLC8zwWs=
 github.com/bsm/ginkgo/v2 v2.12.0/go.mod h1:SwYbGRRDovPVboqFv0tPTcG1sN61LM1Z4ARdbAV9g4c=
 github.com/bsm/gomega v1.27.10 h1:yeMWxP2pV2fG3FgAODIY8EiRE3dy0aeFYt4l7wh6yKA=
@@ -11,6 +12,7 @@ github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1
 github.com/bytedance/sonic v1.10.0-rc/go.mod h1:ElCzW+ufi8qKqNW0FY314xriJhyJhuoJ3gFZdAHF7NM=
 github.com/bytedance/sonic v1.10.2 h1:GQebETVBxYB7JGWJtLBi07OVzWwt+8dWA00gEVW2ZFE=
 github.com/bytedance/sonic v1.10.2/go.mod h1:iZcSUejdk5aukTND/Eu/ivjQuEL0Cu9/rf50Hi0u/g4=
+github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
 github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/chenzhuoyu/base64x v0.0.0-20211019084208-fb5309c8db06/go.mod h1:DH46F32mSOjUmXrMHnKwZdA8wcEefY7UVqBKYGjpdQY=
@@ -20,18 +22,18 @@ github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d/go.mod h1:8EPpV
 github.com/chenzhuoyu/iasm v0.9.0/go.mod h1:Xjy2NpN3h7aUqeqM+woSuuvxmIe6+DDsiNLIrkAmYog=
 github.com/chenzhuoyu/iasm v0.9.1 h1:tUHQJXo3NhBqw6s33wkGn9SP3bvrWLdlVIJ3hQBL7P0=
 github.com/chenzhuoyu/iasm v0.9.1/go.mod h1:Xjy2NpN3h7aUqeqM+woSuuvxmIe6+DDsiNLIrkAmYog=
-github.com/coreos/go-oidc v2.2.1+incompatible h1:mh48q/BqXqgjVHpy2ZY7WnWAbenxRjsz9N1i1YxjHAk=
-github.com/coreos/go-oidc v2.2.1+incompatible/go.mod h1:CgnwVTmzoESiwO9qyAFEMiHoZ1nMCKZlZ9V6mm3/LKc=
-github.com/coreos/go-oidc/v3 v3.9.0 h1:0J/ogVOd4y8P0f0xUh8l9t07xRP/d8tccvjHl2dcsSo=
-github.com/coreos/go-oidc/v3 v3.9.0/go.mod h1:rTKz2PYwftcrtoCzV5g5kvfJoWcm0Mk8AF8y1iAQro4=
+github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumCAMpl/TFQ4/5kLM=
-github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
+github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
+github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
 github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
 github.com/fsnotify/fsnotify v1.7.0 h1:8JEhPFa5W2WU7YfeZzPNqzMP6Lwt7L2715Ggo0nosvA=
@@ -42,8 +44,6 @@ github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE
 github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm+fLHvGI=
 github.com/gin-gonic/gin v1.9.1 h1:4idEAncQnU5cB7BeOkPtxjfCSye0AAm1R0RVIqJ+Jmg=
 github.com/gin-gonic/gin v1.9.1/go.mod h1:hPrL7YrpYKXt5YId3A/Tnip5kqbEAP+KLuI3SUcPTeU=
-github.com/go-jose/go-jose/v3 v3.0.1 h1:pWmKFVtt+Jl0vBZTIpz/eAKwsm6LkIxDVVbFHKkchhA=
-github.com/go-jose/go-jose/v3 v3.0.1/go.mod h1:RNkWWRld676jZEYoV3+XK8L2ZnNSvIsxFMht0mSX+u8=
 github.com/go-playground/assert/v2 v2.2.0 h1:JvknZsQTYeFEAhQwI4qEt9cyV5ONwRHC+lYKSsYSR8s=
 github.com/go-playground/assert/v2 v2.2.0/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
 github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/oXslEjJA=
@@ -54,19 +54,46 @@ github.com/go-playground/validator/v10 v10.16.0 h1:x+plE831WK4vaKHO/jpgUGsvLKIqR
 github.com/go-playground/validator/v10 v10.16.0/go.mod h1:9iXMNT7sEkjXb0I+enO7QXmzG6QCsPWY4zveKFVRSyU=
 github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU=
 github.com/goccy/go-json v0.10.2/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I=
+github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
+github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
+github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da h1:oI5xCqsCo564l8iNU+DwB5epxmsaqB+rhGL0m5jtYqE=
+github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
+github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
+github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
+github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
+github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
+github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
+github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
+github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
+github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
 github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
 github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
 github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
+github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
+github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
+github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
-github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
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@@ -91,8 +118,6 @@ github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
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@@ -109,8 +134,7 @@ github.com/pelletier/go-toml/v2 v2.1.1/go.mod h1:tJU2Z3ZkXwnxa4DPO899bsyIoywizdU
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@@ -133,7 +157,6 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
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@@ -148,6 +171,8 @@ github.com/twitchyliquid64/golang-asm v0.15.1/go.mod h1:a1lVb/DtPvCB8fslRZhAngC2
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@@ -158,26 +183,41 @@ golang.org/x/arch v0.0.0-20210923205945-b76863e36670/go.mod h1:5om86z9Hs0C8fWVUu
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@@ -194,14 +234,45 @@ golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
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+google.golang.org/grpc v1.59.0 h1:Z5Iec2pjwb+LEOqzpB2MR12/eKFhDPhuqW91O+4bwUk=
+google.golang.org/grpc v1.59.0/go.mod h1:aUPDwccQo6OTjy7Hct4AfBPD1GptF4fyUjIkQ9YtF98=
+google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
+google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
+google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
+google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
+google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
+google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
@@ -211,8 +282,6 @@ gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntN
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/ini.v1 v1.67.0 h1:Dgnx+6+nfE+IfzjUEISNeydPJh9AXNNsWbGP9KzCsOA=
 gopkg.in/ini.v1 v1.67.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
-gopkg.in/square/go-jose.v2 v2.6.0 h1:NGk74WTnPKBNUhNzQX7PYcTLUjoq7mzKk2OKbvwk2iI=
-gopkg.in/square/go-jose.v2 v2.6.0/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
@@ -220,5 +289,7 @@ gorm.io/driver/postgres v1.5.4 h1:Iyrp9Meh3GmbSuyIAGyjkN+n9K+GHX9b9MqsTL4EJCo=
 gorm.io/driver/postgres v1.5.4/go.mod h1:Bgo89+h0CRcdA33Y6frlaHHVuTdOf87pmyzwW9C/BH0=
 gorm.io/gorm v1.25.5 h1:zR9lOiiYf09VNh5Q1gphfyia1JpiClIWG9hQaxB/mls=
 gorm.io/gorm v1.25.5/go.mod h1:hbnx/Oo0ChWMn1BIhpy1oYozzpM15i4YPuHDmfYtwg8=
+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 nullprogram.com/x/optparse v1.0.0/go.mod h1:KdyPE+Igbe0jQUrVfMqDMeJQIJZEuyV7pjYmp6pbG50=
 rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=
diff --git a/internal/auth/auth.dto.go b/internal/auth/auth.dto.go
new file mode 100644
index 0000000..6b5e48d
--- /dev/null
+++ b/internal/auth/auth.dto.go
@@ -0,0 +1,20 @@
+package auth
+
+type RegisterDTO struct {
+	Gender              string                `json:"gender"`
+	FirstName           string                `json:"first_name"`
+	LastName            string                `json:"last_name"`
+	Email               string                `json:"email"`
+	School              string                `json:"school"`
+	BirthDate           string                `json:"birth_date"`
+	Address             string                `json:"address"`
+	FromAbroad          string                `json:"from_abroad"`
+	Allergy             string                `json:"allergy"`
+	MedicalCondition    string                `json:"medical_condition"`
+	JoinCUReason        string                `json:"join_cu_reason"`
+	NewsSource          string                `json:"news_source"`
+	Status              string                `json:"status"`
+	Grade               string                `json:"grade"`
+	DesiredRounds       []DesiredRounds       `gorm:"foreignKey:UserID"` // One-to-many relationship
+	InterestedFaculties []InterestedFaculties `gorm:"foreignKey:UserID"` // One-to-many relationship
+}
\ No newline at end of file
diff --git a/internal/auth/auth.handler.go b/internal/auth/auth.handler.go
index 47c94ce..3343195 100644
--- a/internal/auth/auth.handler.go
+++ b/internal/auth/auth.handler.go
@@ -1,16 +1,11 @@
 package auth
 
 import (
-	"context"
 	"net/http"
-	"strings"
 
 	"github.com/gin-gonic/gin"
-	"github.com/isd-sgcu/oph66-backend/cfgldr"
-	"github.com/dgrijalva/jwt-go"
-	"golang.org/x/oauth2"
-	"golang.org/x/oauth2/google"
 	"github.com/isd-sgcu/oph66-backend/apperror"
+	"github.com/isd-sgcu/oph66-backend/utils"
 	"go.uber.org/zap"
 )
 
@@ -22,141 +17,70 @@ type Handler interface {
 }
 
 type handlerImpl struct {
-	svc Service
-	cfg *cfgldr.Config
+	svc    Service
 	logger *zap.Logger
 }
 
-func NewHandler(svc Service, cfg *cfgldr.Config, logger *zap.Logger) Handler {
+func NewHandler(svc Service, logger *zap.Logger) Handler {
 	return &handlerImpl{
-		svc: svc,
-		cfg: cfg,
-		logger: logger,
+		svc,
+		logger,
 	}
 }
 
 func (h *handlerImpl) GoogleLogin(c *gin.Context) {
-	oauthConfig := h.initializeOAuthConfig()
-
-	url := oauthConfig.AuthCodeURL("state", oauth2.AccessTypeOffline)
+	url, apperr := h.svc.GoogleLogin()
+	if apperr != nil {
+		utils.ReturnError(c, apperr)
+		return
+	}
 	c.Redirect(http.StatusTemporaryRedirect, url)
+	c.JSON(http.StatusOK, gin.H{"message": "GoogleLogin successful"})
 }
 
 func (h *handlerImpl) GoogleCallback(c *gin.Context) {
 	code := c.Query("code")
-	oauthConfig := h.initializeOAuthConfig()
-
-	token, err := oauthConfig.Exchange(context.Background(), code)
-	if err != nil {
-		h.logger.Error("Failed to exchange code for token", zap.Error(err))
-		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to exchange code for token"})
-		return
-	}
-
-	idToken := token.Extra("id_token")
-	if idToken == nil {
-		h.logger.Error("ID token not found")
-		c.JSON(http.StatusInternalServerError, gin.H{"error": "ID token not found"})
+	token , apperr := h.svc.GoogleCallback(code)
+	if apperr != nil {
+		utils.ReturnError(c, apperr)
 		return
 	}
-
-	c.JSON(http.StatusOK, gin.H{
-		"access_token": token.AccessToken,
-		"id_token":     idToken.(string), 
-	})
-}
-
-func (h *handlerImpl) initializeOAuthConfig() *oauth2.Config {
-	return &oauth2.Config{
-		ClientID:     h.cfg.OAuth2Config.ClientID,
-		ClientSecret: h.cfg.OAuth2Config.ClientSecret,
-		RedirectURL:  h.cfg.OAuth2Config.RedirectURL,
-		Scopes: h.cfg.OAuth2Config.Scopes,
-		Endpoint: google.Endpoint,
-	}
+	c.JSON(http.StatusOK, gin.H{"message": "GoogleCallback successful", "token": token})
 }
 
 func (h *handlerImpl) Register(c *gin.Context) {
-	var user User
+	var data RegisterDTO
 
-	if err := c.ShouldBindJSON(&user); err != nil {
-		h.logger.Error("Failed to bind JSON", zap.Error(err))
-		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+	if err := c.ShouldBindJSON(&data); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Failed to bind JSON"})
 		return
 	}
 
-	if err := h.svc.CreateUser(&user); err != nil {
-		h.logger.Error("Failed to create user", zap.Error(err))
-		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to create user"})
+	user, apperr := h.svc.Register(&data)
+	if apperr != nil {
+		utils.ReturnError(c, apperr)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Registration failed"})
 		return
 	}
 
-	c.JSON(http.StatusCreated, gin.H{"message": "User created successfully", "user": user, "id": user.ID})
+	c.JSON(http.StatusCreated, gin.H{"message": "User registered successfully", "user": user})
 }
 
-func (h *handlerImpl) GetProfile(c *gin.Context) {
-    authHeader := c.GetHeader("Authorization")
-    if authHeader == "" {
-        h.logger.Error("Authorization header is missing")
-        c.JSON(http.StatusUnauthorized, gin.H{"error": "Authorization header is missing"})
-        return
-    }
-
-    email, err := h.extractEmailFromJWTToken(authHeader)
-    if err != nil {
-        h.logger.Error("Invalid token", zap.Error(err))
-        c.JSON(http.StatusUnauthorized, gin.H{"error": err.Error()}) // Return specific error message
-        return
-    }
 
-    user, err := h.svc.GetUserByEmail(email)
-	if err != nil {
-		h.logger.Error("Failed to get user", zap.Error(err))
-		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to get user"})
-		return
-	}
-
-	DesiredRounds, err := h.svc.GetDesiredRoundsByUserId(user.ID)
-	if err != nil {
-		h.logger.Error("Failed to get desired rounds", zap.Error(err))
-		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to get desired rounds"})
+func (h *handlerImpl) GetProfile(c *gin.Context) {
+	authHeader := c.GetHeader("Authorization")
+	if authHeader == "" {
+		utils.ReturnError(c, apperror.Unauthorized)
+		c.JSON(http.StatusUnauthorized, gin.H{"error": "Authorization header is missing"})
 		return
 	}
 
-	InterestedFaculties, err := h.svc.GetInterestedFacultiesByUserId(user.ID)
-	if err != nil {
-		h.logger.Error("Failed to get interested faculties", zap.Error(err))
-		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to get interested faculties"})
+	user, apperr := h.svc.GetUserFromJWTToken(authHeader) 
+	if apperr != nil {
+		utils.ReturnError(c, apperr)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to get user from JWT token"})
 		return
 	}
-	
-
-	user.DesiredRounds = DesiredRounds
-	user.InterestedFaculties = InterestedFaculties
 
 	c.JSON(http.StatusOK, gin.H{"user": user, "id": user.ID})
-}
-
-func (h *handlerImpl) extractEmailFromJWTToken(tokenString string) (string, *apperror.AppError) {
-	tokenString = strings.Replace(tokenString, "Bearer ", "", 1)
-
-	token, _, err := new(jwt.Parser).ParseUnverified(tokenString, jwt.MapClaims{})
-	if err != nil {
-		h.logger.Error("could not parse token", zap.Error(err))
-		return "", apperror.InvalidToken
-	}
-
-	claims, ok := token.Claims.(jwt.MapClaims)
-	if !ok {
-		h.logger.Error("invalid token claims")
-		return "", apperror.InvalidToken
-	}
-
-	email, ok := claims["email"].(string)
-	if !ok || email == "" {
-		h.logger.Error("email not found in token claims")
-		return "", apperror.InvalidToken
-	}
-
-	return email, nil
 }
\ No newline at end of file
diff --git a/internal/auth/auth.model.go b/internal/auth/auth.model.go
index 7892c6a..ad1d6fd 100644
--- a/internal/auth/auth.model.go
+++ b/internal/auth/auth.model.go
@@ -1,7 +1,7 @@
 package auth
 
 type User struct {
-	ID                  uint                  `gorm:"primaryKey;autoIncrement" json:"-"`
+	ID                  uint                  `gorm:"primaryKey;autoIncrement" json:"id"`
 	Gender              string                `json:"gender"`
 	FirstName           string                `json:"first_name"`
 	LastName            string                `json:"last_name"`
diff --git a/internal/auth/auth.repository.go b/internal/auth/auth.repository.go
index c0a2db5..fa85e9f 100644
--- a/internal/auth/auth.repository.go
+++ b/internal/auth/auth.repository.go
@@ -5,10 +5,9 @@ import (
 )
 
 type Repository interface {
-	Create(result *User) error
-	GetByEmail(email string) (*User, error)
-	GetInterestedFacultiesByUserId(id uint) ([]InterestedFaculties, error)
-	GetDesiredRoundsByUserId(id uint) ([]DesiredRounds, error)
+	CreateUser(user *User) (*User, error)
+	UpdateUser(id uint, user *User) (*User, error)
+	GetUserByEmail(email string) (*User, error)
 }
 
 type repositoryImpl struct {
@@ -20,30 +19,67 @@ func NewRepository(db *gorm.DB) Repository {
 		db,
 	}
 }
-func (r *repositoryImpl) Create(user *User) error {
-	return r.db.Create(user).Error
-}
 
-func (r *repositoryImpl) GetByEmail(email string) (*User, error) {
-	var user User
-	if err := r.db.Where("email = ?", email).First(&user).Error; err != nil {
+func (r *repositoryImpl) CreateUser(user *User) (*User, error) {
+	if err := r.db.Create(user).Error; err != nil {
 		return nil, err
 	}
-	return &user, nil
+	return user, nil
 }
 
-func (r *repositoryImpl) GetInterestedFacultiesByUserId(id uint) ([]InterestedFaculties, error) {
-	var interestedFaculties []InterestedFaculties
-	if err := r.db.Where("user_id = ?", id).Find(&interestedFaculties).Error; err != nil {
+func (r *repositoryImpl) UpdateUser(id uint, user *User) (*User, error) {
+    tx := r.db.Begin()
+
+    var existingUser User
+    if err := tx.Where("id = ?", id).Preload("InterestedFaculties").Preload("DesiredRounds").First(&existingUser).Error; err != nil {
+        tx.Rollback()
+        return nil, err
+    }
+
+	if err := tx.Where("user_id = ?", id).Delete(&InterestedFaculties{}).Error; err != nil {
+		tx.Rollback()
 		return nil, err
 	}
-	return interestedFaculties, nil
-}
 
-func (r *repositoryImpl) GetDesiredRoundsByUserId(id uint) ([]DesiredRounds, error) {
-	var desiredRounds []DesiredRounds
-	if err := r.db.Where("user_id = ?", id).Find(&desiredRounds).Error; err != nil {
+	if err := tx.Where("user_id = ?", id).Delete(&DesiredRounds{}).Error; err != nil {
+		tx.Rollback()
 		return nil, err
 	}
-	return desiredRounds, nil
-}
\ No newline at end of file
+
+    existingUser.FirstName = user.FirstName
+    existingUser.LastName = user.LastName
+	existingUser.Email = user.Email
+	existingUser.School = user.School
+	existingUser.BirthDate = user.BirthDate
+	existingUser.Address = user.Address
+	existingUser.FromAbroad = user.FromAbroad
+	existingUser.Allergy = user.Allergy
+	existingUser.MedicalCondition = user.MedicalCondition
+	existingUser.JoinCUReason = user.JoinCUReason
+	existingUser.NewsSource = user.NewsSource
+	existingUser.Status = user.Status
+	existingUser.Grade = user.Grade
+
+    existingUser.InterestedFaculties = user.InterestedFaculties
+    existingUser.DesiredRounds = user.DesiredRounds
+
+    if err := tx.Save(&existingUser).Error; err != nil {
+        tx.Rollback()
+        return nil, err
+    }
+
+    if err := tx.Commit().Error; err != nil {
+        return nil, err
+    }
+
+    return &existingUser, nil
+}
+
+func (r *repositoryImpl) GetUserByEmail(email string) (*User, error) {
+	var user *User
+    if err := r.db.Where("email = ?", email).Preload("InterestedFaculties").Preload("DesiredRounds").First(&user).Error; err != nil {
+        return nil, err
+    }
+
+    return user, nil
+}
diff --git a/internal/auth/auth.service.go b/internal/auth/auth.service.go
index 77e6ab3..c860724 100644
--- a/internal/auth/auth.service.go
+++ b/internal/auth/auth.service.go
@@ -1,62 +1,140 @@
 package auth
 
 import (
+	"context"
+	"strings"
+
 	"github.com/isd-sgcu/oph66-backend/apperror"
+	"github.com/isd-sgcu/oph66-backend/cfgldr"
 	"go.uber.org/zap"
+	"golang.org/x/oauth2"
+	"google.golang.org/api/idtoken"
+	"golang.org/x/oauth2/google"
 )
 
 type Service interface {
-	CreateUser(user *User) *apperror.AppError
-	GetUserByEmail(email string) (*User, *apperror.AppError)
-	GetInterestedFacultiesByUserId(id uint) ([]InterestedFaculties, *apperror.AppError)
-	GetDesiredRoundsByUserId(id uint) ([]DesiredRounds, *apperror.AppError)
+	GoogleLogin() (string, *apperror.AppError)
+	GoogleCallback(code string) (string, *apperror.AppError)
+	Register (data *RegisterDTO) (*User, *apperror.AppError)
+	GetUserFromJWTToken(tokenString string) (*User, *apperror.AppError)
 }
 
-func NewService(repo Repository, logger *zap.Logger) Service {
+func NewService(repo Repository, logger *zap.Logger, cfg *cfgldr.Config) Service {
+	oauthConfig := &oauth2.Config{
+		ClientID:     cfg.OAuth2Config.ClientID,
+		ClientSecret: cfg.OAuth2Config.ClientSecret,
+		RedirectURL:  cfg.OAuth2Config.RedirectURL,
+		Scopes:       cfg.OAuth2Config.Scopes,
+		Endpoint:     google.Endpoint,
+	}
 	return &serviceImpl{
 		repo,
+		cfg,
 		logger,
+		oauthConfig,
 	}
 }
 
-
 type serviceImpl struct {
-	repo Repository
-	logger *zap.Logger
+	repo        Repository
+	cfg         *cfgldr.Config
+	logger      *zap.Logger
+	oauthConfig *oauth2.Config
 }
 
-func (s *serviceImpl) CreateUser(user *User) *apperror.AppError {
-	err := s.repo.Create(user)
-	if err!= nil {	
-		s.logger.Error("could not create user in database", zap.Error(err))
-		return apperror.InternalError
+func (s *serviceImpl) GoogleLogin() (string, *apperror.AppError) {
+	url := s.oauthConfig.AuthCodeURL("state")
+	if url == "" {
+		s.logger.Error("Failed to get AuthCodeURL")
+		return "", apperror.InternalError
 	}
-	return nil
+	return url , nil
 }
 
-func (s *serviceImpl) GetUserByEmail(email string) (*User, *apperror.AppError) {
-	user , err := s.repo.GetByEmail(email)
+func (s *serviceImpl) GoogleCallback(code string) (string, *apperror.AppError) {
+	token, err := s.oauthConfig.Exchange(context.Background(), code)
 	if err != nil {
-		s.logger.Error("could not retrieve user from database", zap.Error(err))
-		return nil, apperror.InternalError
+		s.logger.Error("Failed to exchange code for token", zap.Error(err))
+		return "", apperror.InternalError
 	}
-	return user, nil
+
+	idToken := token.Extra("id_token")
+	if idToken == nil {
+		s.logger.Error("ID token not found")
+		return "", apperror.InternalError
+	}
+
+
+	return idToken.(string), nil
+}
+
+func (s *serviceImpl) Register(data *RegisterDTO) (*User, *apperror.AppError) {
+	user, err := s.repo.GetUserByEmail(data.Email)
+	dataUser := ConvertRegisterDTOToUser(data)
+
+	if err == nil {
+		user, err := s.repo.UpdateUser(user.ID, dataUser)
+		if err != nil {
+			s.logger.Error("Failed to update user", zap.Error(err))
+			return nil, apperror.InternalError
+		}
+		return user, nil
+	} else {
+		user, err := s.repo.CreateUser(dataUser)
+		if err != nil {
+			s.logger.Error("Failed to create user", zap.Error(err))
+			return nil, apperror.InternalError
+		}
+		return user, nil
+}
 }
 
-func (s *serviceImpl) GetInterestedFacultiesByUserId(id uint) ([]InterestedFaculties, *apperror.AppError) {
-	user , err := s.repo.GetInterestedFacultiesByUserId(id)
+func (s *serviceImpl) GetUserFromJWTToken(tokenString string) (*User, *apperror.AppError) {
+	if !strings.HasPrefix(tokenString, "Bearer ") {
+		return nil, apperror.InvalidToken
+	}
+
+	tokenString = strings.Replace(tokenString, "Bearer ", "", 1)
+
+	token, err := idtoken.Validate(context.Background(), tokenString, s.cfg.OAuth2Config.ClientID)
 	if err != nil {
-		s.logger.Error("could not retrieve interested faculties from database", zap.Error(err))
-		return nil, apperror.InternalError
+		s.logger.Error("Failed to validate token", zap.Error(err))
+		return nil, apperror.InvalidToken
 	}
-	return user, nil
-}
 
-func (s *serviceImpl) GetDesiredRoundsByUserId(id uint) ([]DesiredRounds, *apperror.AppError) {
-	user , err := s.repo.GetDesiredRoundsByUserId(id)
+	email, ok := token.Claims["email"].(string)
+	if !ok || email == "" {
+		s.logger.Error("Email not found in token claims")
+		return nil, apperror.InvalidToken
+	}
+
+	user, err := s.repo.GetUserByEmail(email)
 	if err != nil {
-		s.logger.Error("could not retrieve desired rounds from database", zap.Error(err))
+		s.logger.Error("Could not retrieve user from database", zap.Error(err))
 		return nil, apperror.InternalError
 	}
+
 	return user, nil
 }
+
+
+func ConvertRegisterDTOToUser(dto *RegisterDTO) *User {
+	return &User{
+		Gender:            dto.Gender,
+		FirstName:         dto.FirstName,
+		LastName:          dto.LastName,
+		Email:             dto.Email,
+		School:            dto.School,
+		BirthDate:         dto.BirthDate,
+		Address:           dto.Address,
+		FromAbroad:        dto.FromAbroad,
+		Allergy:           dto.Allergy,
+		MedicalCondition:  dto.MedicalCondition,
+		JoinCUReason:      dto.JoinCUReason,
+		NewsSource:        dto.NewsSource,
+		Status:            dto.Status,
+		Grade:             dto.Grade,
+		DesiredRounds:     dto.DesiredRounds,
+		InterestedFaculties: dto.InterestedFaculties,
+	}
+}
\ No newline at end of file
diff --git a/internal/event/event.service.go b/internal/event/event.service.go
index ba1a3b6..41e0f52 100644
--- a/internal/event/event.service.go
+++ b/internal/event/event.service.go
@@ -48,4 +48,4 @@ func (s *serviceImpl) GetEventById(eventId string) (Event, *apperror.AppError) {
 	}
 
 	return result, nil
-}
\ No newline at end of file
+}
diff --git a/migrate.sh b/migrate.sh
index 0a73b1b..cba99a2 100755
--- a/migrate.sh
+++ b/migrate.sh
@@ -24,7 +24,7 @@ docker run \
 				INSERT INTO faculties (code, name_en, name_th) VALUES (23, 'Faculty of Science', 'คณะวิทยาศาสตร์');
 				INSERT INTO faculties (code, name_en, name_th) VALUES (34, 'Faculty of Law', 'คณะนิติศาสตร์');
 
-        CREATE TABLE events (
+        		CREATE TABLE events (
 					id VARCHAR(128) PRIMARY KEY,
 					name_en VARCHAR(128) NOT NULL,
 					name_th VARCHAR(128) NOT NULL,
@@ -118,12 +118,5 @@ docker run \
 					'2024-01-21 09:00:00+00'
 				);
 
-	CREATE TABLE desired_rounds (
-    id SERIAL PRIMARY KEY,
-    round VARCHAR(128) NOT NULL,
-    user_id BIGINT REFERENCES users(id)
-);
-
-        
 			\" | psql postgres://postgres:123456@host.docker.internal:5432/postgres
 		"
\ No newline at end of file
diff --git a/schema.sql b/schema.sql
new file mode 100644
index 0000000..251ae35
--- /dev/null
+++ b/schema.sql
@@ -0,0 +1,85 @@
+-- Create "feature_flags" table
+CREATE TABLE "feature_flags" (
+    "key" character varying(50) NOT NULL,
+    "value" boolean NOT NULL,
+    "cache_duration" integer NOT NULL,
+    PRIMARY KEY ("key")
+);
+
+-- Create "users" table
+CREATE TABLE "users" (
+    "id" bigserial NOT NULL,
+    "gender" text NULL,
+    "first_name" text NULL,
+    "last_name" text NULL,
+    "email" text NULL,
+    "school" text NULL,
+    "birth_date" text NULL,
+    "address" text NULL,
+    "from_abroad" text NULL,
+    "allergy" text NULL,
+    "medical_condition" text NULL,
+    "join_cu_reason" text NULL,
+    "news_source" text NULL,
+    "status" text NULL,
+    "grade" text NULL,
+    PRIMARY KEY ("id")
+);
+
+-- Create "desired_rounds" table
+CREATE TABLE "desired_rounds" (
+    "id" serial NOT NULL,
+    "round" character varying(128) NOT NULL,
+    "user_id" bigint NULL,
+    PRIMARY KEY ("id"),
+    CONSTRAINT "desired_rounds_user_id_fkey" FOREIGN KEY ("user_id") REFERENCES "users" ("id") ON UPDATE NO ACTION ON DELETE NO ACTION
+);
+
+-- Create "faculties" table
+CREATE TABLE "faculties" (
+    "code" smallint NOT NULL,
+    "name_en" character varying(128) NOT NULL,
+    "name_th" character varying(128) NOT NULL,
+    PRIMARY KEY ("code")
+);
+
+-- Create "events" table
+CREATE TABLE "events" (
+    "id" character varying(128) NOT NULL,
+    "name_en" character varying(128) NOT NULL,
+    "name_th" character varying(128) NOT NULL,
+    "faculty_code" smallint NOT NULL,
+    "department_en" character varying(128) NOT NULL,
+    "department_th" character varying(128) NOT NULL,
+    "require_registration" boolean NOT NULL,
+    "max_capacity" integer NULL,
+    "location_en" character varying(128) NOT NULL,
+    "location_th" character varying(128) NOT NULL,
+    "description_en" character varying(2048) NULL,
+    "description_th" character varying(2048) NULL,
+    PRIMARY KEY ("id"),
+    CONSTRAINT "events_faculty_code_fkey" FOREIGN KEY ("faculty_code") REFERENCES "faculties" ("code") ON UPDATE NO ACTION ON DELETE NO ACTION
+);
+
+-- Create "interested_faculties" table
+CREATE TABLE "interested_faculties" (
+    "id" bigserial NOT NULL,
+    "faculty" text NULL,
+    "department" text NULL,
+    "section" text NULL,
+    "user_id" bigint NULL,
+    PRIMARY KEY ("id"),
+    CONSTRAINT "fk_users_interested_faculties" FOREIGN KEY ("user_id") REFERENCES "users" ("id") ON UPDATE NO ACTION ON DELETE NO ACTION
+);
+
+-- Create index "idx_interested_faculties_user_id" to table: "interested_faculties"
+CREATE INDEX "idx_interested_faculties_user_id" ON "interested_faculties" ("user_id");
+
+-- Create "schedules" table
+CREATE TABLE "schedules" (
+    "event_id" character varying(128) NOT NULL,
+    "starts_at" timestamptz NOT NULL,
+    "ends_at" timestamptz NOT NULL,
+    PRIMARY KEY ("event_id", "starts_at", "ends_at"),
+    CONSTRAINT "schedules_event_id_fkey" FOREIGN KEY ("event_id") REFERENCES "events" ("id") ON UPDATE NO ACTION ON DELETE NO ACTION
+);
\ No newline at end of file