provider: wire beacon + return balance + use cached balance

proto/autogenerated/client.md

@@ -1104,6 +1104,13 @@ The nostr server will send back a message response, and inside the body there wi
   - __nostr_pub__: _string_
   - __user_identifier__: _string_
 
+### BeaconData
+  - __avatarUrl__: _string_ *this field is optional
+  - __fees__: _[CumulativeFees](#CumulativeFees)_ *this field is optional
+  - __name__: _string_
+  - __nextRelay__: _string_ *this field is optional
+  - __type__: _string_
+
 ### BundleData
   - __available_chunks__: ARRAY of: _number_
   - __base_64_data__: ARRAY of: _string_
@@ -1149,6 +1156,11 @@ The nostr server will send back a message response, and inside the body there wi
 ### CreateOneTimeInviteLinkResponse
   - __invitation_link__: _string_
 
+### CumulativeFees
+  - __networkFeeBps__: _number_
+  - __networkFeeFixed__: _number_
+  - __serviceFeeBps__: _number_
+
 ### DebitAuthorization
   - __authorized__: _boolean_
   - __debit_id__: _string_
@@ -1290,6 +1302,7 @@ The nostr server will send back a message response, and inside the body there wi
   - __request_id__: _string_
 
 ### LiveUserOperation
+  - __latest_balance__: _number_
   - __operation__: _[UserOperation](#UserOperation)_
 
 ### LndChannels
@@ -1487,6 +1500,7 @@ The nostr server will send back a message response, and inside the body there wi
 
 ### PayInvoiceResponse
   - __amount_paid__: _number_
+  - __latest_balance__: _number_
   - __network_fee__: _number_
   - __operation_id__: _string_
   - __preimage__: _string_

proto/autogenerated/go/types.go

@@ -177,6 +177,13 @@ type BannedAppUser struct {
 	Nostr_pub       string `json:"nostr_pub"`
 	User_identifier string `json:"user_identifier"`
 }
+type BeaconData struct {
+	Avatarurl string          `json:"avatarUrl"`
+	Fees      *CumulativeFees `json:"fees"`
+	Name      string          `json:"name"`
+	Nextrelay string          `json:"nextRelay"`
+	Type      string          `json:"type"`
+}
 type BundleData struct {
 	Available_chunks []int64  `json:"available_chunks"`
 	Base_64_data     []string `json:"base_64_data"`
@@ -222,6 +229,11 @@ type CreateOneTimeInviteLinkRequest struct {
 type CreateOneTimeInviteLinkResponse struct {
 	Invitation_link string `json:"invitation_link"`
 }
+type CumulativeFees struct {
+	Networkfeebps   int64 `json:"networkFeeBps"`
+	Networkfeefixed int64 `json:"networkFeeFixed"`
+	Servicefeebps   int64 `json:"serviceFeeBps"`
+}
 type DebitAuthorization struct {
 	Authorized bool        `json:"authorized"`
 	Debit_id   string      `json:"debit_id"`
@@ -363,6 +375,7 @@ type LiveManageRequest struct {
 	Request_id string `json:"request_id"`
 }
 type LiveUserOperation struct {
+	Latest_balance int64          `json:"latest_balance"`
 	Operation      *UserOperation `json:"operation"`
 }
 type LndChannels struct {
@@ -560,6 +573,7 @@ type PayInvoiceRequest struct {
 }
 type PayInvoiceResponse struct {
 	Amount_paid    int64  `json:"amount_paid"`
+	Latest_balance int64  `json:"latest_balance"`
 	Network_fee    int64  `json:"network_fee"`
 	Operation_id   string `json:"operation_id"`
 	Preimage       string `json:"preimage"`

proto/autogenerated/ts/types.ts

@@ -983,6 +983,48 @@ export const BannedAppUserValidate = (o?: BannedAppUser, opts: BannedAppUserOpti
     return null
 }
 
+export type BeaconData = {
+    avatarUrl?: string
+    fees?: CumulativeFees
+    name: string
+    nextRelay?: string
+    type: string
+}
+export type BeaconDataOptionalField = 'avatarUrl' | 'fees' | 'nextRelay'
+export const BeaconDataOptionalFields: BeaconDataOptionalField[] = ['avatarUrl', 'fees', 'nextRelay']
+export type BeaconDataOptions = OptionsBaseMessage & {
+    checkOptionalsAreSet?: BeaconDataOptionalField[]
+    avatarUrl_CustomCheck?: (v?: string) => boolean
+    fees_Options?: CumulativeFeesOptions
+    name_CustomCheck?: (v: string) => boolean
+    nextRelay_CustomCheck?: (v?: string) => boolean
+    type_CustomCheck?: (v: string) => boolean
+}
+export const BeaconDataValidate = (o?: BeaconData, opts: BeaconDataOptions = {}, path: string = 'BeaconData::root.'): Error | null => {
+    if (opts.checkOptionalsAreSet && opts.allOptionalsAreSet) return new Error(path + ': only one of checkOptionalsAreSet or allOptionalNonDefault can be set for each message')
+    if (typeof o !== 'object' || o === null) return new Error(path + ': object is not an instance of an object or is null')
+
+    if ((o.avatarUrl || opts.allOptionalsAreSet || opts.checkOptionalsAreSet?.includes('avatarUrl')) && typeof o.avatarUrl !== 'string') return new Error(`${path}.avatarUrl: is not a string`)
+    if (opts.avatarUrl_CustomCheck && !opts.avatarUrl_CustomCheck(o.avatarUrl)) return new Error(`${path}.avatarUrl: custom check failed`)
+
+    if (typeof o.fees === 'object' || opts.allOptionalsAreSet || opts.checkOptionalsAreSet?.includes('fees')) {
+        const feesErr = CumulativeFeesValidate(o.fees, opts.fees_Options, `${path}.fees`)
+        if (feesErr !== null) return feesErr
+    }
+    
+
+    if (typeof o.name !== 'string') return new Error(`${path}.name: is not a string`)
+    if (opts.name_CustomCheck && !opts.name_CustomCheck(o.name)) return new Error(`${path}.name: custom check failed`)
+
+    if ((o.nextRelay || opts.allOptionalsAreSet || opts.checkOptionalsAreSet?.includes('nextRelay')) && typeof o.nextRelay !== 'string') return new Error(`${path}.nextRelay: is not a string`)
+    if (opts.nextRelay_CustomCheck && !opts.nextRelay_CustomCheck(o.nextRelay)) return new Error(`${path}.nextRelay: custom check failed`)
+
+    if (typeof o.type !== 'string') return new Error(`${path}.type: is not a string`)
+    if (opts.type_CustomCheck && !opts.type_CustomCheck(o.type)) return new Error(`${path}.type: custom check failed`)
+
+    return null
+}
+
 export type BundleData = {
     available_chunks: number[]
     base_64_data: string[]
@@ -1256,6 +1298,34 @@ export const CreateOneTimeInviteLinkResponseValidate = (o?: CreateOneTimeInviteL
     return null
 }
 
+export type CumulativeFees = {
+    networkFeeBps: number
+    networkFeeFixed: number
+    serviceFeeBps: number
+}
+export const CumulativeFeesOptionalFields: [] = []
+export type CumulativeFeesOptions = OptionsBaseMessage & {
+    checkOptionalsAreSet?: []
+    networkFeeBps_CustomCheck?: (v: number) => boolean
+    networkFeeFixed_CustomCheck?: (v: number) => boolean
+    serviceFeeBps_CustomCheck?: (v: number) => boolean
+}
+export const CumulativeFeesValidate = (o?: CumulativeFees, opts: CumulativeFeesOptions = {}, path: string = 'CumulativeFees::root.'): Error | null => {
+    if (opts.checkOptionalsAreSet && opts.allOptionalsAreSet) return new Error(path + ': only one of checkOptionalsAreSet or allOptionalNonDefault can be set for each message')
+    if (typeof o !== 'object' || o === null) return new Error(path + ': object is not an instance of an object or is null')
+
+    if (typeof o.networkFeeBps !== 'number') return new Error(`${path}.networkFeeBps: is not a number`)
+    if (opts.networkFeeBps_CustomCheck && !opts.networkFeeBps_CustomCheck(o.networkFeeBps)) return new Error(`${path}.networkFeeBps: custom check failed`)
+
+    if (typeof o.networkFeeFixed !== 'number') return new Error(`${path}.networkFeeFixed: is not a number`)
+    if (opts.networkFeeFixed_CustomCheck && !opts.networkFeeFixed_CustomCheck(o.networkFeeFixed)) return new Error(`${path}.networkFeeFixed: custom check failed`)
+
+    if (typeof o.serviceFeeBps !== 'number') return new Error(`${path}.serviceFeeBps: is not a number`)
+    if (opts.serviceFeeBps_CustomCheck && !opts.serviceFeeBps_CustomCheck(o.serviceFeeBps)) return new Error(`${path}.serviceFeeBps: custom check failed`)
+
+    return null
+}
+
 export type DebitAuthorization = {
     authorized: boolean
     debit_id: string
@@ -2112,17 +2182,22 @@ export const LiveManageRequestValidate = (o?: LiveManageRequest, opts: LiveManag
 }
 
 export type LiveUserOperation = {
+    latest_balance: number
     operation: UserOperation
 }
 export const LiveUserOperationOptionalFields: [] = []
 export type LiveUserOperationOptions = OptionsBaseMessage & {
     checkOptionalsAreSet?: []
+    latest_balance_CustomCheck?: (v: number) => boolean
     operation_Options?: UserOperationOptions
 }
 export const LiveUserOperationValidate = (o?: LiveUserOperation, opts: LiveUserOperationOptions = {}, path: string = 'LiveUserOperation::root.'): Error | null => {
     if (opts.checkOptionalsAreSet && opts.allOptionalsAreSet) return new Error(path + ': only one of checkOptionalsAreSet or allOptionalNonDefault can be set for each message')
     if (typeof o !== 'object' || o === null) return new Error(path + ': object is not an instance of an object or is null')
 
+    if (typeof o.latest_balance !== 'number') return new Error(`${path}.latest_balance: is not a number`)
+    if (opts.latest_balance_CustomCheck && !opts.latest_balance_CustomCheck(o.latest_balance)) return new Error(`${path}.latest_balance: custom check failed`)
+
     const operationErr = UserOperationValidate(o.operation, opts.operation_Options, `${path}.operation`)
     if (operationErr !== null) return operationErr
     
@@ -3287,6 +3362,7 @@ export const PayInvoiceRequestValidate = (o?: PayInvoiceRequest, opts: PayInvoic
 
 export type PayInvoiceResponse = {
     amount_paid: number
+    latest_balance: number
     network_fee: number
     operation_id: string
     preimage: string
@@ -3296,6 +3372,7 @@ export const PayInvoiceResponseOptionalFields: [] = []
 export type PayInvoiceResponseOptions = OptionsBaseMessage & {
     checkOptionalsAreSet?: []
     amount_paid_CustomCheck?: (v: number) => boolean
+    latest_balance_CustomCheck?: (v: number) => boolean
     network_fee_CustomCheck?: (v: number) => boolean
     operation_id_CustomCheck?: (v: string) => boolean
     preimage_CustomCheck?: (v: string) => boolean
@@ -3308,6 +3385,9 @@ export const PayInvoiceResponseValidate = (o?: PayInvoiceResponse, opts: PayInvo
     if (typeof o.amount_paid !== 'number') return new Error(`${path}.amount_paid: is not a number`)
     if (opts.amount_paid_CustomCheck && !opts.amount_paid_CustomCheck(o.amount_paid)) return new Error(`${path}.amount_paid: custom check failed`)
 
+    if (typeof o.latest_balance !== 'number') return new Error(`${path}.latest_balance: is not a number`)
+    if (opts.latest_balance_CustomCheck && !opts.latest_balance_CustomCheck(o.latest_balance)) return new Error(`${path}.latest_balance: custom check failed`)
+
     if (typeof o.network_fee !== 'number') return new Error(`${path}.network_fee: is not a number`)
     if (opts.network_fee_CustomCheck && !opts.network_fee_CustomCheck(o.network_fee)) return new Error(`${path}.network_fee: custom check failed`)
 

proto/service/structs.proto

@@ -476,6 +476,7 @@ message PayInvoiceResponse{
     string operation_id = 3;
     int64 service_fee = 4;
     int64 network_fee = 5;
+    int64 latest_balance = 6;
 }
 
 message InvoicePaymentStream {
@@ -613,6 +614,7 @@ message GetProductBuyLinkResponse {
 
 message LiveUserOperation {
     UserOperation operation  = 1;
+    int64 latest_balance = 2;
 }
 message MigrationUpdate {
     optional ClosureMigration closure = 1;
@@ -833,3 +835,18 @@ message MessagingToken {
     string device_id = 1;
     string firebase_messaging_token = 2;
 }
+
+
+message CumulativeFees {
+    int64 networkFeeBps = 1;
+    int64 networkFeeFixed = 2;
+    int64 serviceFeeBps = 3;
+}
+
+message BeaconData {
+    string type = 1;
+    string name = 2;
+    optional string avatarUrl = 3;
+    optional string nextRelay = 4;
+    optional CumulativeFees fees = 5;
+}

src/e2e.ts

@@ -25,7 +25,10 @@ const start = async () => {
     const nostrSettings = settingsManager.getSettings().nostrRelaySettings
     log("initializing nostr middleware")
     const { Send } = nostrMiddleware(serverMethods, mainHandler,
-        { ...nostrSettings, apps, clients: [liquidityProviderInfo] },
+        {
+            ...nostrSettings, apps, clients: [liquidityProviderInfo],
+            providerDestinationPub: settingsManager.getSettings().liquiditySettings.liquidityProviderPub
+        },
         (e, p) => mainHandler.liquidityProvider.onEvent(e, p)
     )
     log("starting server")

src/index.ts

@@ -25,10 +25,13 @@ const start = async () => {
     const { apps, mainHandler, liquidityProviderInfo, wizard, adminManager } = keepOn
     const serverMethods = GetServerMethods(mainHandler)
     log("initializing nostr middleware")
-    const relays = mainHandler.settings.getSettings().nostrRelaySettings.relays
+    const relays = settingsManager.getSettings().nostrRelaySettings.relays
-    const maxEventContentLength = mainHandler.settings.getSettings().nostrRelaySettings.maxEventContentLength
+    const maxEventContentLength = settingsManager.getSettings().nostrRelaySettings.maxEventContentLength
     const { Send, Stop, Ping, Reset } = nostrMiddleware(serverMethods, mainHandler,
-        { relays, maxEventContentLength, apps, clients: [liquidityProviderInfo] },
+        {
+            relays, maxEventContentLength, apps, clients: [liquidityProviderInfo],
+            providerDestinationPub: settingsManager.getSettings().liquiditySettings.liquidityProviderPub
+        },
         (e, p) => mainHandler.liquidityProvider.onEvent(e, p)
     )
     exitHandler(() => { Stop(); mainHandler.Stop() })
@@ -43,7 +46,7 @@ const start = async () => {
     }
     adminManager.setAppNprofile(appNprofile)
     const Server = NewServer(serverMethods, serverOptions(mainHandler))
-    Server.Listen(mainHandler.settings.getSettings().serviceSettings.servicePort)
+    Server.Listen(settingsManager.getSettings().serviceSettings.servicePort)
 }
 start()
 

src/nostrMiddleware.ts

@@ -79,7 +79,7 @@ export default (serverMethods: Types.ServerMethods, mainHandler: Main, nostrSett
         nostrTransport({ ...j, appId: event.appId }, res => {
             nostr.Send({ type: 'app', appId: event.appId }, { type: 'content', pub: event.pub, content: JSON.stringify({ ...res, requestId: j.requestId }) })
         }, event.startAtNano, event.startAtMs)
-    })
+    }, beacon => mainHandler.liquidityProvider.onBeaconEvent(beacon))
 
     // Mark nostr connected/ready after initial subscription tick
     mainHandler.adminManager.setNostrConnected(true)

src/services/main/appUserManager.ts

@@ -69,7 +69,7 @@ export default class {
             throw new Error(`app user ${ctx.user_id} not found`) // TODO: fix logs doxing
         }
         const nostrSettings = this.settings.getSettings().nostrRelaySettings
-        const { max, networkFeeBps, networkFeeFixed, serviceFeeBps } = this.applicationManager.paymentManager.GetMaxPayableInvoice(user.balance_sats, true)
+        const { max, networkFeeBps, networkFeeFixed, serviceFeeBps } = this.applicationManager.paymentManager.GetMaxPayableInvoice(user.balance_sats)
         return {
             userId: ctx.user_id,
             balance: user.balance_sats,

src/services/main/applicationManager.ts

@@ -47,12 +47,13 @@ export default class {
         }, 60 * 1000); // 1 minute
     }
 
-    async StartAppsServiceBeacon(publishBeacon: (app: Application) => void) {
+    async StartAppsServiceBeacon(publishBeacon: (app: Application, fees: Types.CumulativeFees) => void) {
         this.serviceBeaconInterval = setInterval(async () => {
             try {
+                const fees = this.paymentManager.GetAllFees()
                 const apps = await this.storage.applicationStorage.GetApplications()
                 apps.forEach(app => {
-                    publishBeacon(app)
+                    publishBeacon(app, fees)
                 })
             } catch (e) {
                 this.log("error in beacon", (e as any).message)
@@ -154,7 +155,7 @@ export default class {
 
         const ndebitString = ndebitEncode({ pubkey: app.nostr_public_key!, pointer: u.identifier, relay: nostrSettings.relays[0] })
         log("🔗 [DEBUG] Generated ndebit for user", { userId: u.user.user_id, ndebit: ndebitString })
-        const { max, networkFeeBps, networkFeeFixed, serviceFeeBps } = this.paymentManager.GetMaxPayableInvoice(u.user.balance_sats, true)
+        const { max, networkFeeBps, networkFeeFixed, serviceFeeBps } = this.paymentManager.GetMaxPayableInvoice(u.user.balance_sats)
         return {
             identifier: u.identifier,
             info: {
@@ -212,7 +213,7 @@ export default class {
         const app = await this.storage.applicationStorage.GetApplication(appId)
         const user = await this.storage.applicationStorage.GetApplicationUser(app, req.user_identifier)
         const nostrSettings = this.settings.getSettings().nostrRelaySettings
-        const { max, networkFeeBps, networkFeeFixed, serviceFeeBps } = this.paymentManager.GetMaxPayableInvoice(user.user.balance_sats, true)
+        const { max, networkFeeBps, networkFeeFixed, serviceFeeBps } = this.paymentManager.GetMaxPayableInvoice(user.user.balance_sats)
         return {
             max_withdrawable: max, identifier: req.user_identifier, info: {
                 userId: user.user.user_id, balance: user.user.balance_sats,

src/services/main/debitManager.ts

@@ -9,9 +9,11 @@ import { ApplicationUser } from '../storage/entity/ApplicationUser.js';
 import { NostrEvent, NostrSend, SendData, SendInitiator } from '../nostr/handler.js';
 import { UnsignedEvent } from 'nostr-tools';
 import { Ndebit, NdebitData, NdebitFailure, NdebitSuccess, RecurringDebitTimeUnit } from "@shocknet/clink-sdk";
-import { debitAccessRulesToDebitRules, newNdebitResponse,debitRulesToDebitAccessRules, 
+import {
+    debitAccessRulesToDebitRules, newNdebitResponse, debitRulesToDebitAccessRules,
     nofferErrors, AuthRequiredRes, HandleNdebitRes, expirationRuleName,
-    frequencyRuleName,IntervalTypeToSeconds,unitToIntervalType } from "./debitTypes.js";
+    frequencyRuleName, IntervalTypeToSeconds, unitToIntervalType
+} from "./debitTypes.js";
 
 export class DebitManager {
 
@@ -72,7 +74,7 @@ export class DebitManager {
                 this.sendDebitResponse({ res: 'GFY', error: nofferErrors[1], code: 1 }, { pub: req.npub, id: req.request_id, appId: ctx.app_id })
                 return
             case Types.DebitResponse_response_type.INVOICE:
-                await this.paySingleInvoice(ctx, {invoice: req.response.invoice, npub: req.npub, request_id: req.request_id})
+                await this.paySingleInvoice(ctx, { invoice: req.response.invoice, npub: req.npub, request_id: req.request_id })
                 return
             case Types.DebitResponse_response_type.AUTHORIZE:
                 await this.handleAuthorization(ctx, req.response.authorize, { npub: req.npub, request_id: req.request_id })
@@ -82,7 +84,7 @@ export class DebitManager {
         }
     }
 
-    paySingleInvoice = async (ctx: Types.UserContext, {invoice,npub,request_id}:{invoice:string, npub:string, request_id:string}) => {
+    paySingleInvoice = async (ctx: Types.UserContext, { invoice, npub, request_id }: { invoice: string, npub: string, request_id: string }) => {
         try {
             this.logger("🔍 [DEBIT REQUEST] Paying single invoice")
             const app = await this.storage.applicationStorage.GetApplication(ctx.app_id)
@@ -97,7 +99,7 @@ export class DebitManager {
         }
     }
 
-    handleAuthorization = async (ctx: Types.UserContext,debit:Types.DebitToAuthorize, {npub,request_id}:{ npub:string, request_id:string})=>{
+    handleAuthorization = async (ctx: Types.UserContext, debit: Types.DebitToAuthorize, { npub, request_id }: { npub: string, request_id: string }) => {
         this.logger("🔍 [DEBIT REQUEST] Handling authorization", {
             npub,
             request_id,
@@ -144,7 +146,7 @@ export class DebitManager {
             pointerdata
         })
         const res = await this.payNdebitInvoice(event, pointerdata)
-        this.logger("🔍 [DEBIT REQUEST] Sending ",res.status," response")
+        this.logger("🔍 [DEBIT REQUEST] Sending ", res.status, " response")
         if (res.status === 'fail' || res.status === 'authOk') {
             const e = newNdebitResponse(JSON.stringify(res.debitRes), event)
             this.nostrSend({ type: 'app', appId: event.appId }, { type: 'event', event: e, encrypt: { toPub: event.pub } })
@@ -159,7 +161,7 @@ export class DebitManager {
         this.notifyPaymentSuccess(appUser, debitRes, op, event)
     }
 
-    handleAuthRequired = (data:NdebitData, event: NostrEvent, res: AuthRequiredRes) => {
+    handleAuthRequired = (data: NdebitData, event: NostrEvent, res: AuthRequiredRes) => {
         if (!res.appUser.nostr_public_key) {
             this.sendDebitResponse({ res: 'GFY', error: nofferErrors[1], code: 1 }, { pub: event.pub, id: event.id, appId: event.appId })
             return
@@ -169,7 +171,9 @@ export class DebitManager {
     }
 
     notifyPaymentSuccess = (appUser: ApplicationUser, debitRes: NdebitSuccess, op: Types.UserOperation, event: { pub: string, id: string, appId: string }) => {
-        const message: Types.LiveUserOperation & { requestId: string, status: 'OK' } = { operation: op, requestId: "GetLiveUserOperations", status: 'OK' }
+        const balance = appUser.user.balance_sats
+        const message: Types.LiveUserOperation & { requestId: string, status: 'OK' } =
+            { operation: op, requestId: "GetLiveUserOperations", status: 'OK', latest_balance: balance }
         if (appUser.nostr_public_key) { // TODO - fix before support for http streams
             this.nostrSend({ type: 'app', appId: event.appId }, { type: 'content', content: JSON.stringify(message), pub: appUser.nostr_public_key })
         }

src/services/main/index.ts

@@ -103,8 +103,8 @@ export default class {
     }
 
     StartBeacons() {
-        this.applicationManager.StartAppsServiceBeacon(app => {
+        this.applicationManager.StartAppsServiceBeacon((app, fees) => {
-            this.UpdateBeacon(app, { type: 'service', name: app.name, avatarUrl: app.avatar_url })
+            this.UpdateBeacon(app, { type: 'service', name: app.name, avatarUrl: app.avatar_url, fees })
         })
     }
 
@@ -373,8 +373,9 @@ export default class {
             getLogger({ appName: app.name })("cannot notify user, not a nostr user")
             return
         }
-
+        const balance = user.user.balance_sats
-        const message: Types.LiveUserOperation & { requestId: string, status: 'OK' } = { operation: op, requestId: "GetLiveUserOperations", status: 'OK' }
+        const message: Types.LiveUserOperation & { requestId: string, status: 'OK' } =
+            { operation: op, requestId: "GetLiveUserOperations", status: 'OK', latest_balance: balance }
         const j = JSON.stringify(message)
         this.nostrSend({ type: 'app', appId: app.app_id }, { type: 'content', content: j, pub: user.nostr_public_key })
         this.SendEncryptedNotification(app, user, op)
@@ -396,7 +397,7 @@ export default class {
         })
     }
 
-    async UpdateBeacon(app: Application, content: { type: 'service', name: string, avatarUrl?: string, nextRelay?: string }) {
+    async UpdateBeacon(app: Application, content: Types.BeaconData) {
         if (!app.nostr_public_key) {
             getLogger({ appName: app.name })("cannot update beacon, public key not set")
             return
@@ -435,8 +436,9 @@ export default class {
     async ResetNostr() {
         const apps = await this.storage.applicationStorage.GetApplications()
         const nextRelay = this.settings.getSettings().nostrRelaySettings.relays[0]
+        const fees = this.paymentManager.GetAllFees()
         for (const app of apps) {
-            await this.UpdateBeacon(app, { type: 'service', name: app.name, avatarUrl: app.avatar_url, nextRelay })
+            await this.UpdateBeacon(app, { type: 'service', name: app.name, avatarUrl: app.avatar_url, nextRelay, fees })
         }
 
         const defaultNames = ['wallet', 'wallet-test', this.settings.getSettings().serviceSettings.defaultAppName]
@@ -453,7 +455,8 @@ export default class {
             apps: apps.map(a => ({ appId: a.app_id, name: a.name, privateKey: a.nostr_private_key || "", publicKey: a.nostr_public_key || "" })),
             relays: this.settings.getSettings().nostrRelaySettings.relays,
             maxEventContentLength: this.settings.getSettings().nostrRelaySettings.maxEventContentLength,
-            clients: [liquidityProviderInfo]
+            clients: [liquidityProviderInfo],
+            providerDestinationPub: this.settings.getSettings().liquiditySettings.liquidityProviderPub
         }
         this.nostrReset(s)
     }

src/services/main/liquidityManager.ts

@@ -104,7 +104,7 @@ export class LiquidityManager {
     afterOutInvoicePaid = async () => { }
 
     shouldDrainProvider = async () => {
-        const maxW = await this.liquidityProvider.GetLatestMaxWithdrawable()
+        const maxW = await this.liquidityProvider.GetMaxWithdrawable()
         const { remote } = await this.lnd.ChannelBalance()
         const drainable = Math.min(maxW, remote)
         if (drainable < 500) {
@@ -173,7 +173,7 @@ export class LiquidityManager {
         if (pendingChannels.pendingOpenChannels.length > 0) {
             return { shouldOpen: false }
         }
-        const maxW = await this.liquidityProvider.GetLatestMaxWithdrawable()
+        const maxW = await this.liquidityProvider.GetMaxWithdrawable()
         if (maxW < threshold) {
             return { shouldOpen: false }
         }

src/services/main/liquidityProvider.ts

@@ -1,7 +1,7 @@
 import newNostrClient from '../../../proto/autogenerated/ts/nostr_client.js'
 import { NostrRequest } from '../../../proto/autogenerated/ts/nostr_transport.js'
 import * as Types from '../../../proto/autogenerated/ts/types.js'
-import { getLogger } from '../helpers/logger.js'
+import { ERROR, getLogger } from '../helpers/logger.js'
 import { Utils } from '../helpers/utilsWrapper.js'
 import { NostrEvent, NostrSend } from '../nostr/handler.js'
 import { InvoicePaidCb } from '../lnd/settings.js'
@@ -9,7 +9,12 @@ import Storage from '../storage/index.js'
 import SettingsManager from './settingsManager.js'
 import { LiquiditySettings } from './settings.js'
 export type LiquidityRequest = { action: 'spend' | 'receive', amount: number }
-
+/* export type CumulativeFees = {
+    networkFeeBps: number;
+    networkFeeFixed: number;
+    serviceFeeBps: number;
+}
+export type BeaconData = { type: 'service', name: string, avatarUrl?: string, nextRelay?: string, fees?: CumulativeFees } */
 export type nostrCallback<T> = { startedAtMillis: number, type: 'single' | 'stream', f: (res: T) => void }
 export class LiquidityProvider {
     getSettings: () => LiquiditySettings
@@ -28,9 +33,11 @@ export class LiquidityProvider {
     queue: ((state: 'ready') => void)[] = []
     utils: Utils
     pendingPayments: Record<string, number> = {}
-    stateCache: Types.UserInfo | null = null
+    feesCache: { networkFeeBps: number, networkFeeFixed: number, serviceFeeBps: number } | null = null
-    unreachableSince: number | null = null
+    // unreachableSince: number | null = null
-    reconnecting = false
+    // reconnecting = false
+    lastSeenBeacon = 0
+    latestReceivedBalance = 0
     incrementProviderBalance: (balance: number) => Promise<void>
     // make the sub process accept client
     constructor(getSettings: () => LiquiditySettings, utils: Utils, invoicePaidCb: InvoicePaidCb, incrementProviderBalance: (balance: number) => Promise<any>) {
@@ -71,11 +78,12 @@ export class LiquidityProvider {
     }
 
     IsReady = () => {
-        const elapsed = this.unreachableSince ? Date.now() - this.unreachableSince : 0
+        /*         const elapsed = this.unreachableSince ? Date.now() - this.unreachableSince : 0
                 if (!this.reconnecting && elapsed > 1000 * 60 * 5) {
                     this.GetUserState().then(() => this.reconnecting = false)
-        }
+                } */
-        return this.ready && !this.getSettings().disableLiquidityProvider && !this.unreachableSince
+        const seenInPast2Minutes = Date.now() - this.lastSeenBeacon < 1000 * 60 * 2
+        return this.ready && !this.getSettings().disableLiquidityProvider && seenInPast2Minutes
     }
 
     AwaitProviderReady = async (): Promise<'inactive' | 'ready'> => {
@@ -114,6 +122,7 @@ export class LiquidityProvider {
                 try {
                     await this.invoicePaidCb(res.operation.identifier, res.operation.amount, 'provider')
                     this.incrementProviderBalance(res.operation.amount)
+                    this.latestReceivedBalance = res.latest_balance
                 } catch (err: any) {
                     this.log("error processing incoming invoice", err.message)
                 }
@@ -126,30 +135,38 @@ export class LiquidityProvider {
         if (res.status === 'ERROR') {
             if (res.reason !== 'timeout') {
                 this.log("error getting user info", res.reason)
-                if (!this.unreachableSince) this.unreachableSince = Date.now()
             }
             return res
         }
-        this.unreachableSince = null
+        this.feesCache = {
-        this.stateCache = res
+            networkFeeBps: res.network_max_fee_bps,
+            networkFeeFixed: res.network_max_fee_fixed,
+            serviceFeeBps: res.service_fee_bps
+        }
+        this.latestReceivedBalance = res.balance
         this.utils.stateBundler.AddBalancePoint('providerBalance', res.balance)
         this.utils.stateBundler.AddBalancePoint('providerMaxWithdrawable', res.max_withdrawable)
         return res
     }
 
     GetFees = () => {
-        if (!this.stateCache) {
+        if (!this.feesCache) {
-            throw new Error("user state not cached")
+            throw new Error("fees not cached")
-        }
-        return {
-            serviceFeeBps: this.stateCache.service_fee_bps,
-            networkFeeBps: this.stateCache.network_max_fee_bps,
-            networkFeeFixed: this.stateCache.network_max_fee_fixed,
-
         }
+        return this.feesCache
     }
 
-    GetLatestMaxWithdrawable = async () => {
+    GetMaxWithdrawable = () => {
+        if (!this.IsReady() || !this.feesCache) {
+            return 0
+        }
+        const { networkFeeBps, networkFeeFixed, serviceFeeBps } = this.feesCache
+        const totalBps = networkFeeBps + serviceFeeBps
+        const div = 1 + (totalBps / 10000)
+        return Math.floor((this.latestReceivedBalance - networkFeeFixed) / div)
+    }
+
+    /*     GetLatestMaxWithdrawable = async () => {
             if (!this.IsReady()) {
                 return 0
             }
@@ -159,18 +176,19 @@ export class LiquidityProvider {
                 return 0
             }
             return res.max_withdrawable
-    }
+        } */
 
-    GetLatestBalance = async () => {
+    GetLatestBalance = () => {
         if (!this.IsReady()) {
             return 0
         }
-        const res = await this.GetUserState()
+        return this.latestReceivedBalance
+        /* const res = await this.GetUserState()
         if (res.status === 'ERROR') {
             this.log("error getting user info", res.reason)
             return 0
         }
-        return res.balance
+        return res.balance */
     }
 
     GetPendingBalance = async () => {
@@ -270,6 +288,7 @@ export class LiquidityProvider {
             } */
             const totalPaid = res.amount_paid + res.network_fee + res.service_fee
             this.incrementProviderBalance(-totalPaid).then(() => { delete this.pendingPayments[invoice] })
+            this.latestReceivedBalance = res.latest_balance
             this.utils.stateBundler.AddTxPoint('paidAnInvoice', decodedAmount, { used: 'provider', from, timeDiscount: true })
             return res
         } catch (err) {
@@ -328,6 +347,26 @@ export class LiquidityProvider {
             this.log("configured to send to ", this.pubDestination)
         }
     }
+    // fees: { networkFeeBps: number, networkFeeFixed: number, serviceFeeBps: number }
+    onBeaconEvent = async (beaconData: { content: string, pub: string }) => {
+        if (beaconData.pub !== this.pubDestination) {
+            this.log(ERROR, "got beacon from invalid pub", beaconData.pub, this.pubDestination)
+            return
+        }
+        const beacon = JSON.parse(beaconData.content) as Types.BeaconData
+        const err = Types.BeaconDataValidate(beacon)
+        if (err) {
+            this.log(ERROR, "error validating beacon data", err.message)
+            return
+        }
+        if (beacon.type !== 'service') {
+            this.log(ERROR, "got beacon from invalid type", beacon.type)
+            return
+        }
+        if (beacon.fees) {
+            this.feesCache = beacon.fees
+        }
+    }
 
     onEvent = async (res: { requestId: string }, fromPub: string) => {
         if (fromPub !== this.pubDestination) {

src/services/main/paymentManager.ts

@@ -36,6 +36,8 @@ interface UserOperationInfo {
     };
     internal?: boolean;
 }
+
+
 export type PendingTx = { type: 'incoming', tx: AddressReceivingTransaction } | { type: 'outgoing', tx: UserTransactionPayment }
 const defaultLnurlPayMetadata = (text: string) => `[["text/plain", "${text}"]]`
 const defaultLnAddressMetadata = (text: string, id: string) => `[["text/plain", "${text}"],["text/identifier", "${id}"]]`
@@ -232,10 +234,25 @@ export default class {
         }
     }
 
-    GetMaxPayableInvoice(balance: number, appUser: boolean): { max: number, serviceFeeBps: number, networkFeeBps: number, networkFeeFixed: number } {
+    GetAllFees = (): Types.CumulativeFees => {
-        const { outgoingAppInvoiceFee, outgoingAppUserInvoiceFee, outgoingAppUserInvoiceFeeBps } = this.settings.getSettings().serviceFeeSettings
+        const { outgoingAppUserInvoiceFeeBps } = this.settings.getSettings().serviceFeeSettings
-        const serviceFee = appUser ? outgoingAppUserInvoiceFee : outgoingAppInvoiceFee
         if (this.lnd.liquidProvider.IsReady()) {
+            const fees = this.lnd.liquidProvider.GetFees()
+            const networkFeeBps = fees.networkFeeBps + fees.serviceFeeBps
+            return { networkFeeBps, networkFeeFixed: fees.networkFeeFixed, serviceFeeBps: outgoingAppUserInvoiceFeeBps }
+        }
+        const { feeFixedLimit, feeRateBps } = this.settings.getSettings().lndSettings
+        return { networkFeeBps: feeRateBps, networkFeeFixed: feeFixedLimit, serviceFeeBps: outgoingAppUserInvoiceFeeBps }
+    }
+
+    GetMaxPayableInvoice(balance: number): Types.CumulativeFees & { max: number } {
+        const { networkFeeBps, networkFeeFixed, serviceFeeBps } = this.GetAllFees()
+        const totalBps = networkFeeBps + serviceFeeBps
+        const div = 1 + (totalBps / 10000)
+        const max = Math.floor((balance - networkFeeFixed) / div)
+        return { max, serviceFeeBps, networkFeeBps, networkFeeFixed }
+
+        /*         if (this.lnd.liquidProvider.IsReady()) {
                     const fees = this.lnd.liquidProvider.GetFees()
                     const providerServiceFee = fees.serviceFeeBps / 10000
                     const providerNetworkFee = fees.networkFeeBps / 10000
@@ -247,7 +264,7 @@ export default class {
                 const { feeFixedLimit, feeRateLimit, feeRateBps } = this.settings.getSettings().lndSettings
                 const div = 1 + serviceFee + feeRateLimit
                 const max = Math.floor((balance - feeFixedLimit) / div)
-        return { max, serviceFeeBps: outgoingAppUserInvoiceFeeBps, networkFeeBps: feeRateBps, networkFeeFixed: feeFixedLimit }
+                return { max, serviceFeeBps: outgoingAppUserInvoiceFeeBps, networkFeeBps: feeRateBps, networkFeeFixed: feeFixedLimit } */
         /*         let maxWithinServiceFee = 0
                 if (appUser) {
                     maxWithinServiceFee = Math.max(0, Math.floor(balance * (1 - this.settings.getSettings().serviceFeeSettings.outgoingAppUserInvoiceFee)))
@@ -317,6 +334,7 @@ export default class {
             operation_id: `${Types.UserOperationType.OUTGOING_INVOICE}-${paymentInfo.serialId}`,
             network_fee: paymentInfo.networkFee,
             service_fee: serviceFee,
+            latest_balance: user.balance_sats
         }
     }
 

src/services/main/rugPullTracker.ts

@@ -27,7 +27,7 @@ export class RugPullTracker {
         const providerTracker = await this.storage.liquidityStorage.GetTrackedProvider('lnPub', pubDst)
         const ready = this.liquidProvider.IsReady()
         if (ready) {
-            const balance = await this.liquidProvider.GetLatestBalance()
+            const balance = this.liquidProvider.GetLatestBalance()
             const pendingBalance = await this.liquidProvider.GetPendingBalance()
             const trackedBalance = balance + pendingBalance
             if (!providerTracker) {

src/services/nostr/handler.ts

@@ -2,7 +2,7 @@
 import WebSocket from 'ws'
 Object.assign(global, { WebSocket: WebSocket });
 import crypto from 'crypto'
-import { SimplePool, Event, UnsignedEvent, finalizeEvent, Relay, nip44 } from 'nostr-tools'
+import { SimplePool, Event, UnsignedEvent, finalizeEvent, Relay, nip44, Filter } from 'nostr-tools'
 import { ERROR, getLogger } from '../helpers/logger.js'
 import { nip19 } from 'nostr-tools'
 import { encrypt as encryptV1, decrypt as decryptV1, getSharedSecret as getConversationKeyV1 } from './nip44v1.js'
@@ -26,6 +26,7 @@ export type NostrSettings = {
     relays: string[]
     clients: ClientInfo[]
     maxEventContentLength: number
+    providerDestinationPub: string
 }
 
 export type NostrEvent = {
@@ -69,9 +70,14 @@ type ProcessMetricsResponse = {
     type: 'processMetrics'
     metrics: ProcessMetrics
 }
+type BeaconResponse = {
+    type: 'beacon'
+    content: string
+    pub: string
+}
 
 export type ChildProcessRequest = SettingsRequest | SendRequest | PingRequest
-export type ChildProcessResponse = ReadyResponse | EventResponse | ProcessMetricsResponse | PingResponse
+export type ChildProcessResponse = ReadyResponse | EventResponse | ProcessMetricsResponse | PingResponse | BeaconResponse
 const send = (message: ChildProcessResponse) => {
     if (process.send) {
         process.send(message, undefined, undefined, err => {
@@ -218,18 +224,28 @@ export default class Handler {
             appIds: appIds,
             listeningForPubkeys: appIds
         })
-
+        const subs: Filter[] = [
-        return relay.subscribe([
             {
                 since: Math.ceil(Date.now() / 1000),
                 kinds: supportedKinds,
                 '#p': appIds,
             }
-        ], {
+        ]
+        if (this.settings.providerDestinationPub) {
+            subs.push({
+                kinds: [30078], '#d': ['Lightning.Pub'],
+                authors: [this.settings.providerDestinationPub]
+            })
+        }
+        return relay.subscribe(subs, {
             oneose: () => {
                 this.log("up to date with nostr events")
             },
             onevent: async (e) => {
+                if (e.kind === 30078 && e.pubkey === this.settings.providerDestinationPub) {
+                    send({ type: 'beacon', content: e.content, pub: e.pubkey })
+                    return
+                }
                 if (!supportedKinds.includes(e.kind) || !e.pubkey) {
                     return
                 }

src/services/nostr/index.ts

@@ -3,7 +3,7 @@ import { NostrSettings, NostrEvent, ChildProcessRequest, ChildProcessResponse, S
 import { Utils } from '../helpers/utilsWrapper.js'
 import { getLogger, ERROR } from '../helpers/logger.js'
 type EventCallback = (event: NostrEvent) => void
-
+type BeaconCallback = (beacon: { content: string, pub: string }) => void
 
 
 
@@ -13,7 +13,7 @@ export default class NostrSubprocess {
     utils: Utils
     awaitingPongs: (() => void)[] = []
     log = getLogger({})
-    constructor(settings: NostrSettings, utils: Utils, eventCallback: EventCallback) {
+    constructor(settings: NostrSettings, utils: Utils, eventCallback: EventCallback, beaconCallback: BeaconCallback) {
         this.utils = utils
         this.childProcess = fork("./build/src/services/nostr/handler")
         this.childProcess.on("error", (error) => {
@@ -43,6 +43,9 @@ export default class NostrSubprocess {
                     this.awaitingPongs.forEach(resolve => resolve())
                     this.awaitingPongs = []
                     break
+                case 'beacon':
+                    beaconCallback({ content: message.content, pub: message.pub })
+                    break
                 default:
                     console.error("unknown nostr event response", message)
                     break;