From d7c3617daf2da3308688ad8af6474b0fbcfba3f1 Mon Sep 17 00:00:00 2001
From: Jon Staab <shtaab@gmail.com>
Date: Tue, 3 Sep 2024 09:27:22 -0700
Subject: [PATCH] Add utils for deriving verified zappers/handles

---
 packages/app/src/handles.ts | 11 ++++++++++-
 packages/app/src/zappers.ts | 13 +++++++++++--
 2 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/packages/app/src/handles.ts b/packages/app/src/handles.ts
index c94ff74..fbe51d0 100644
--- a/packages/app/src/handles.ts
+++ b/packages/app/src/handles.ts
@@ -1,8 +1,10 @@
-import {writable} from 'svelte/store'
+import {writable, derived} from 'svelte/store'
 import {withGetter} from '@welshman/store'
+import {type SubscribeRequest} from "@welshman/net"
 import {uniq, uniqBy, batcher, postJson, last} from '@welshman/lib'
 import {env} from './core'
 import {collection} from './collection'
+import {deriveProfile} from './profiles'
 
 export type Handle = {
   nip05: string
@@ -53,5 +55,12 @@ export const {
   }),
 })
 
+export const deriveHandleForPubkey = (pubkey: string, request: Partial<SubscribeRequest> = {}) =>
+  derived(
+    [handlesByNip05, deriveProfile(pubkey, request)],
+    ([$handlesByNip05, $profile]) =>
+      $profile?.nip05 ? $handlesByNip05.get($profile?.nip05) : undefined
+  )
+
 export const displayHandle = (handle: Handle) =>
   handle.nip05.startsWith("_@") ? last(handle.nip05.split("@")) : handle.nip05
diff --git a/packages/app/src/zappers.ts b/packages/app/src/zappers.ts
index 85b7e98..523d095 100644
--- a/packages/app/src/zappers.ts
+++ b/packages/app/src/zappers.ts
@@ -1,9 +1,11 @@
-import {writable} from 'svelte/store'
+import {writable, derived} from 'svelte/store'
 import {withGetter} from '@welshman/store'
-import type {Zapper} from '@welshman/util'
+import {type Zapper} from '@welshman/util'
+import {type SubscribeRequest} from "@welshman/net"
 import {uniq, identity, bech32ToHex, tryCatch, uniqBy, batcher, postJson} from '@welshman/lib'
 import {env} from './core'
 import {collection} from './collection'
+import {deriveProfile} from './profiles'
 
 export const zappers = withGetter(writable<Zapper[]>([]))
 
@@ -49,3 +51,10 @@ export const {
   }),
 })
 
+export const deriveZapperForPubkey = (pubkey: string, request: Partial<SubscribeRequest> = {}) =>
+  derived(
+    [zappersByLnurl, deriveProfile(pubkey, request)],
+    ([$zappersByLnurl, $profile]) =>
+      $profile?.lnurl ? $zappersByLnurl.get($profile?.lnurl) : undefined
+  )
+