Add CBOR and agent initiated WebSocket connections (#51, #490, #646, #845, etc)

- Add version exchange between hub and agent.
- Introduce ConnectionManager for managing WebSocket and SSH connections.
- Implement fingerprint generation and storage in agent.
- Create expiry map package to store universal tokens.
- Update config.yml configuration to include tokens.
- Enhance system management with new methods for handling system states and alerts.
- Update front-end components to support token / fingerprint management features.
- Introduce utility functions for token generation and hub URL retrieval.

Co-authored-by: nhas <jordanatararimu@gmail.com>

beszel/migrations/collections_snapshot_0_12_0.go

@@ -1,23 +1,14 @@
 package migrations
 
 import (
+	"github.com/google/uuid"
 	"github.com/pocketbase/pocketbase/core"
 	m "github.com/pocketbase/pocketbase/migrations"
 )
 
 func init() {
 	m.Register(func(app core.App) error {
-		// delete duplicate alerts
-		app.DB().NewQuery(`
-		DELETE FROM alerts
-		WHERE rowid NOT IN (
-				SELECT MAX(rowid)
-				FROM alerts
-				GROUP BY user, system, name
-		);
-	`).Execute()
-
-		// import collections
+		// update collections
 		jsonData := `[
 	{
 		"id": "elngm8x1l60zi2v",
@@ -236,6 +227,88 @@ func init() {
 		],
 		"system": false
 	},
+	{
+		"id": "pbc_3663931638",
+		"listRule": "@request.auth.id != \"\" && system.users.id ?= @request.auth.id",
+		"viewRule": "@request.auth.id != \"\" && system.users.id ?= @request.auth.id",
+		"createRule": "@request.auth.id != \"\" && system.users.id ?= @request.auth.id && @request.auth.role != \"readonly\"",
+		"updateRule": "@request.auth.id != \"\" && system.users.id ?= @request.auth.id && @request.auth.role != \"readonly\"",
+		"deleteRule": null,
+		"name": "fingerprints",
+		"type": "base",
+		"fields": [
+			{
+				"autogeneratePattern": "[a-z0-9]{9}",
+				"hidden": false,
+				"id": "text3208210256",
+				"max": 15,
+				"min": 9,
+				"name": "id",
+				"pattern": "^[a-z0-9]+$",
+				"presentable": false,
+				"primaryKey": true,
+				"required": true,
+				"system": true,
+				"type": "text"
+			},
+			{
+				"cascadeDelete": true,
+				"collectionId": "2hz5ncl8tizk5nx",
+				"hidden": false,
+				"id": "relation3377271179",
+				"maxSelect": 1,
+				"minSelect": 0,
+				"name": "system",
+				"presentable": false,
+				"required": true,
+				"system": false,
+				"type": "relation"
+			},
+			{
+				"autogeneratePattern": "[a-zA-Z9-9]{20}",
+				"hidden": false,
+				"id": "text1597481275",
+				"max": 255,
+				"min": 9,
+				"name": "token",
+				"pattern": "",
+				"presentable": false,
+				"primaryKey": false,
+				"required": true,
+				"system": false,
+				"type": "text"
+			},
+			{
+				"autogeneratePattern": "",
+				"hidden": false,
+				"id": "text4228609354",
+				"max": 255,
+				"min": 9,
+				"name": "fingerprint",
+				"pattern": "",
+				"presentable": false,
+				"primaryKey": false,
+				"required": false,
+				"system": false,
+				"type": "text"
+			},
+			{
+				"hidden": false,
+				"id": "autodate3332085495",
+				"name": "updated",
+				"onCreate": true,
+				"onUpdate": true,
+				"presentable": false,
+				"system": false,
+				"type": "autodate"
+			}
+		],
+		"indexes": [
+			"CREATE INDEX ` + "`" + `idx_p9qZlu26po` + "`" + ` ON ` + "`" + `fingerprints` + "`" + ` (` + "`" + `token` + "`" + `)",
+			"CREATE UNIQUE INDEX ` + "`" + `idx_ngboulGMYw` + "`" + ` ON ` + "`" + `fingerprints` + "`" + ` (` + "`" + `system` + "`" + `)"
+		],
+		"system": false
+	},
 	{
 		"id": "ej9oowivz8b2mht",
 		"listRule": "@request.auth.id != \"\"",
@@ -669,7 +742,38 @@ func init() {
 	}
 ]`
 
-		return app.ImportCollectionsByMarshaledJSON([]byte(jsonData), false)
+		err := app.ImportCollectionsByMarshaledJSON([]byte(jsonData), false)
+		if err != nil {
+			return err
+		}
+
+		// Get all systems that don't have fingerprint records
+		var systemIds []string
+		err = app.DB().NewQuery(`
+			SELECT s.id FROM systems s
+			LEFT JOIN fingerprints f ON s.id = f.system
+			WHERE f.system IS NULL
+		`).Column(&systemIds)
+
+		if err != nil {
+			return err
+		}
+		// Create fingerprint records with unique UUID tokens for each system
+		for _, systemId := range systemIds {
+			token := uuid.New().String()
+			_, err = app.DB().NewQuery(`
+				INSERT INTO fingerprints (system, token)
+				VALUES ({:system}, {:token})
+			`).Bind(map[string]any{
+				"system": systemId,
+				"token":  token,
+			}).Execute()
+			if err != nil {
+				return err
+			}
+		}
+
+		return nil
 	}, func(app core.App) error {
 		return nil
 	})