convert email to lowercase

internal/core/services/user_service.go

@@ -8,6 +8,7 @@ import (
 	"backend/pkg/logger"
 	"context"
 	"fmt"
+	"strings"
 	"time"
 
 	"github.com/google/uuid"
@@ -84,7 +85,7 @@ func (u *userService) CreateUser(ctx context.Context, params UserCreateParams) (
 	}
 
 	user := models.UserDTO{
-		Email:    params.Email,
+		Email:    strings.ToLower(params.Email),
 		Secret:   string(secret),
 		FullName: params.Name,
 	}

sql/01_user.sql

@@ -8,7 +8,7 @@ create table if not exists users (
     updated_at timestamp
 );
 
-create index if not exists users_email_idx on users(email);
+create index if not exists idx_users_email on users(email);
 
 create or replace function set_created_at()
 returns trigger as $$
@@ -19,7 +19,7 @@ begin
 end;
 $$ language plpgsql;
 
-create or replace trigger on_user_created
+create or replace trigger trg_user_created
     before insert on users
     for each row
     execute function set_created_at();
@@ -34,7 +34,7 @@ begin
 end;
 $$ language plpgsql;
 
-create or replace trigger on_user_updated
+create or replace trigger trg_user_updated
     before update on users
     for each row
     when(new is distinct from old)