1 00:00:00,000 --> 00:00:03,000 So now that we did install Lucia, 2 00:00:03,000 --> 00:00:04,000 let's get started using it 3 00:00:04,000 --> 00:00:08,000 so that we can soon create such auth sessions 4 00:00:08,000 --> 00:00:11,000 and use them to identify authenticated users. 5 00:00:13,000 --> 00:00:15,000 For that, I'll go to the lib folder 6 00:00:15,000 --> 00:00:19,000 and in there I'll add a auth.js file now. 7 00:00:19,000 --> 00:00:21,000 And it's now in this file 8 00:00:21,000 --> 00:00:25,000 where I'll create a new constant called lucia. 9 00:00:25,000 --> 00:00:26,000 The name is up to you, 10 00:00:26,000 --> 00:00:30,000 but it should store a new object that's created 11 00:00:30,000 --> 00:00:33,000 with help of the Lucia constructor function. 12 00:00:34,000 --> 00:00:36,000 And for that you actually need 13 00:00:36,000 --> 00:00:41,000 to import Lucia from this Lucia package, like this. 14 00:00:44,000 --> 00:00:46,000 Now this constructor function 15 00:00:46,000 --> 00:00:48,000 then needs a couple of arguments. 16 00:00:48,000 --> 00:00:52,000 For example, it needs an adapter, 17 00:00:52,000 --> 00:00:57,000 which will tell Lucia where and how to store those sessions. 18 00:00:57,000 --> 00:01:01,000 That's why we installed that other package, 19 00:01:01,000 --> 00:01:05,000 this @lucia-auth/adapter-sqlite package, 20 00:01:05,000 --> 00:01:10,000 from which we can now import the BetterSqlite3Adapter. 21 00:01:13,000 --> 00:01:16,000 With that imported, we can create a new adapter object 22 00:01:16,000 --> 00:01:18,000 by constructing this BetterSqlite3Adapter. 23 00:01:21,000 --> 00:01:24,000 And to this adapter, we need to pass a handle 24 00:01:24,000 --> 00:01:28,000 to our BetterSqlite3.Database. 25 00:01:28,000 --> 00:01:32,000 And conveniently we have that in the db.js file. 26 00:01:32,000 --> 00:01:36,000 There I'm creating such a better-sqlite3 database 27 00:01:36,000 --> 00:01:39,000 and I'm then exporting that. 28 00:01:39,000 --> 00:01:42,000 So therefore we can easily use that database here 29 00:01:42,000 --> 00:01:46,000 by importing it, like this 30 00:01:46,000 --> 00:01:48,000 and by then assigning it as a first argument 31 00:01:48,000 --> 00:01:53,000 to this BetterSqlite3Adapter constructor. 32 00:01:53,000 --> 00:01:56,000 And then as a second argument for this constructor here, 33 00:01:56,000 --> 00:01:59,000 we can pass a configuration object 34 00:01:59,000 --> 00:02:01,000 where you can tell this adapter 35 00:02:01,000 --> 00:02:04,000 and therefore in the end, Lucia, 36 00:02:04,000 --> 00:02:09,000 what the table name of your users' database table will be. 37 00:02:10,000 --> 00:02:11,000 And in my case, it's users 38 00:02:11,000 --> 00:02:16,000 because in a db.js file, I'm creating a user's table here 39 00:02:16,000 --> 00:02:17,000 for storing the users 40 00:02:17,000 --> 00:02:19,000 and Lucia needs to know 41 00:02:19,000 --> 00:02:23,000 in which database table you do store your users. 42 00:02:23,000 --> 00:02:26,000 And it also needs to know 43 00:02:26,000 --> 00:02:28,000 where you are storing your sessions 44 00:02:28,000 --> 00:02:31,000 or where it should store the sessions, 45 00:02:31,000 --> 00:02:33,000 what the name of the table in the database, 46 00:02:33,000 --> 00:02:37,000 where those sessions should be stored will be. 47 00:02:37,000 --> 00:02:41,000 And in my case, it should be this sessions table here. 48 00:02:41,000 --> 00:02:44,000 So the table name is sessions. 49 00:02:44,000 --> 00:02:46,000 That's what I'll assign here. 50 00:02:48,000 --> 00:02:50,000 With that we have an adapter 51 00:02:50,000 --> 00:02:52,000 and that's now the first argument we must pass 52 00:02:52,000 --> 00:02:54,000 to that Lucia constructor. 53 00:02:56,000 --> 00:02:58,000 Then you can also pass a configuration object 54 00:02:58,000 --> 00:03:02,000 to that constructor function here. 55 00:03:02,000 --> 00:03:05,000 And there you can configure various things, 56 00:03:05,000 --> 00:03:08,000 but for us here, it's the sessionCookie. 57 00:03:08,000 --> 00:03:09,000 That's important 58 00:03:10,000 --> 00:03:14,000 because Lucia will automatically create that cookie 59 00:03:14,000 --> 00:03:16,000 that contains the session ID 60 00:03:16,000 --> 00:03:19,000 because it's also Lucia that creates the session. 61 00:03:19,000 --> 00:03:22,000 But we can now configure that cookie. 62 00:03:22,000 --> 00:03:26,000 And for example, when using Lucia in a NextJS application, 63 00:03:26,000 --> 00:03:30,000 you should set expires to false. 64 00:03:30,000 --> 00:03:34,000 That's something you learn in the Lucia documentation. 65 00:03:34,000 --> 00:03:37,000 And we can also add some attributes to that cookie. 66 00:03:37,000 --> 00:03:40,000 And specifically, I wanna set this cookie 67 00:03:40,000 --> 00:03:43,000 to only work on HTTPS 68 00:03:43,000 --> 00:03:45,000 if we're running this app in production. 69 00:03:45,000 --> 00:03:49,000 So if the NODE_ENV environment variable, 70 00:03:49,000 --> 00:03:51,000 which is set automatically 71 00:03:51,000 --> 00:03:55,000 by pretty much all hosting providers to production 72 00:03:55,000 --> 00:03:57,000 if the app is running in production, 73 00:03:57,000 --> 00:04:00,000 if that environment variable holds a value of production, 74 00:04:00,000 --> 00:04:02,000 which means we're not running the app locally 75 00:04:02,000 --> 00:04:05,000 during development, but instead we now did deploy it. 76 00:04:05,000 --> 00:04:08,000 And in that case, I want to enforce this cookie 77 00:04:08,000 --> 00:04:11,000 to only work across HTTPS. 78 00:04:12,000 --> 00:04:14,000 But that's then it. 79 00:04:14,000 --> 00:04:17,000 That's how we create a new Lucia instance 80 00:04:17,000 --> 00:04:19,000 and we can now use that instance 81 00:04:19,000 --> 00:04:22,000 to then create sessions and session cookies 82 00:04:22,000 --> 00:04:26,000 and to validate incoming requests 83 00:04:26,000 --> 00:04:29,000 and see if they have a valid session cookie.