From 8ef20c27b33ba0097fe763e22441a978203ab650 Mon Sep 17 00:00:00 2001
From: Kieran <kieran@harkin.me>
Date: Mon, 27 Mar 2023 23:58:29 +0100
Subject: [PATCH] feat: per event zap targets

---
 packages/app/src/Element/NoteCreator.tsx | 45 ++++++++++++++++++++++--
 packages/app/src/Element/NoteFooter.tsx  | 18 +++++++---
 packages/app/src/Feed/EventPublisher.ts  | 14 ++++++--
 packages/app/src/lang.json               | 12 +++++++
 packages/app/src/translations/en.json    |  6 +++-
 packages/nostr/src/legacy/Tag.ts         |  5 +++
 6 files changed, 90 insertions(+), 10 deletions(-)

diff --git a/packages/app/src/Element/NoteCreator.tsx b/packages/app/src/Element/NoteCreator.tsx
index cada250..825a7f9 100644
--- a/packages/app/src/Element/NoteCreator.tsx
+++ b/packages/app/src/Element/NoteCreator.tsx
@@ -1,6 +1,6 @@
 import "./NoteCreator.css";
 import { useState } from "react";
-import { FormattedMessage } from "react-intl";
+import { FormattedMessage, useIntl } from "react-intl";
 import { RawEvent, TaggedRawEvent } from "@snort/nostr";
 
 import Icon from "Icons/Icon";
@@ -11,6 +11,7 @@ import Modal from "Element/Modal";
 import ProfileImage from "Element/ProfileImage";
 import useFileUpload from "Upload";
 import Note from "Element/Note";
+import { LNURL } from "LNURL";
 
 import messages from "./messages";
 
@@ -40,16 +41,34 @@ export interface NoteCreatorProps {
 
 export function NoteCreator(props: NoteCreatorProps) {
   const { show, setShow, replyTo, onSend, autoFocus } = props;
+  const { formatMessage } = useIntl();
   const publisher = useEventPublisher();
   const [note, setNote] = useState("");
   const [error, setError] = useState("");
   const [active, setActive] = useState(false);
   const [preview, setPreview] = useState<RawEvent>();
+  const [showAdvanced, setShowAdvanced] = useState(false);
+  const [zapForward, setZapForward] = useState("");
   const uploader = useFileUpload();
 
   async function sendNote() {
     if (note) {
-      const ev = replyTo ? await publisher.reply(replyTo, note) : await publisher.note(note);
+      let extraTags: Array<Array<string>> | undefined;
+      if (zapForward) {
+        try {
+          const svc = new LNURL(zapForward);
+          await svc.load();
+        } catch {
+          setError(
+            formatMessage({
+              defaultMessage: "Invalid LNURL",
+            })
+          );
+          return;
+        }
+        extraTags = [["zap", zapForward]];
+      }
+      const ev = replyTo ? await publisher.reply(replyTo, note, extraTags) : await publisher.note(note, extraTags);
       console.debug("Sending note: ", ev);
       publisher.broadcast(ev);
       setNote("");
@@ -152,6 +171,9 @@ export function NoteCreator(props: NoteCreatorProps) {
             <button className="secondary" type="button" onClick={loadPreview}>
               <FormattedMessage defaultMessage="Toggle Preview" />
             </button>
+            <button className="secondary" type="button" onClick={() => setShowAdvanced(s => !s)}>
+              <FormattedMessage defaultMessage="Advanced" />
+            </button>
             <button className="secondary" type="button" onClick={cancel}>
               <FormattedMessage {...messages.Cancel} />
             </button>
@@ -159,6 +181,25 @@ export function NoteCreator(props: NoteCreatorProps) {
               {replyTo ? <FormattedMessage {...messages.Reply} /> : <FormattedMessage {...messages.Send} />}
             </button>
           </div>
+          {showAdvanced && (
+            <>
+              <h4>
+                <FormattedMessage defaultMessage="Forward Zaps" />
+              </h4>
+              <p>
+                <FormattedMessage defaultMessage="All zaps sent to this note will be received by the following LNURL" />
+              </p>
+              <input
+                type="text"
+                className="w-max"
+                placeholder={formatMessage({
+                  defaultMessage: "LNURL to forward zaps to",
+                })}
+                value={zapForward}
+                onChange={e => setZapForward(e.target.value)}
+              />
+            </>
+          )}
         </Modal>
       )}
     </>
diff --git a/packages/app/src/Element/NoteFooter.tsx b/packages/app/src/Element/NoteFooter.tsx
index dafba60..f11e7cd 100644
--- a/packages/app/src/Element/NoteFooter.tsx
+++ b/packages/app/src/Element/NoteFooter.tsx
@@ -153,10 +153,18 @@ export default function NoteFooter(props: NoteFooterProps) {
     }
   }
 
+  function getLNURL() {
+    return ev.Tags.find(a => a.Key === "zap")?.LNURL || author?.lud16 || author?.lud06;
+  }
+
+  function getTargetName() {
+    return ev.Tags.find(a => a.Key === "zap")?.LNURL || author?.display_name || author?.name;
+  }
+
   async function fastZap(e?: React.MouseEvent) {
     if (zapping || e?.isPropagationStopped()) return;
 
-    const lnurl = author?.lud16 || author?.lud06;
+    const lnurl = getLNURL();
     if (wallet?.isReady() && lnurl) {
       setZapping(true);
       try {
@@ -203,7 +211,7 @@ export default function NoteFooter(props: NoteFooterProps) {
 
   useEffect(() => {
     if (prefs.autoZap && !ZapCache.has(ev.id) && !isMine && !zapping) {
-      const lnurl = author?.lud16 || author?.lud06;
+      const lnurl = getLNURL();
       if (wallet?.isReady() && lnurl) {
         setZapping(true);
         queueMicrotask(async () => {
@@ -222,7 +230,7 @@ export default function NoteFooter(props: NoteFooterProps) {
   }, [prefs.autoZap, author, zapping]);
 
   function tipButton() {
-    const service = author?.lud16 || author?.lud06;
+    const service = getLNURL();
     if (service) {
       return (
         <>
@@ -418,11 +426,11 @@ export default function NoteFooter(props: NoteFooterProps) {
           zaps={zaps}
         />
         <SendSats
-          lnurl={author?.lud16 || author?.lud06}
+          lnurl={getLNURL()}
           onClose={() => setTip(false)}
           show={tip}
           author={author?.pubkey}
-          target={author?.display_name || author?.name}
+          target={getTargetName()}
           note={ev.id}
         />
       </div>
diff --git a/packages/app/src/Feed/EventPublisher.ts b/packages/app/src/Feed/EventPublisher.ts
index e4769b6..f83a9d1 100644
--- a/packages/app/src/Feed/EventPublisher.ts
+++ b/packages/app/src/Feed/EventPublisher.ts
@@ -176,10 +176,15 @@ export default function useEventPublisher() {
         return await signEvent(ev);
       }
     },
-    note: async (msg: string) => {
+    note: async (msg: string, extraTags?: Array<Array<string>>) => {
       if (pubKey) {
         const ev = EventExt.forPubKey(pubKey, EventKind.TextNote);
         processContent(ev, msg);
+        if (extraTags) {
+          for (const et of extraTags) {
+            ev.tags.push(et);
+          }
+        }
         return await signEvent(ev);
       }
     },
@@ -200,7 +205,7 @@ export default function useEventPublisher() {
     /**
      * Reply to a note
      */
-    reply: async (replyTo: TaggedRawEvent, msg: string) => {
+    reply: async (replyTo: TaggedRawEvent, msg: string, extraTags?: Array<Array<string>>) => {
       if (pubKey) {
         const ev = EventExt.forPubKey(pubKey, EventKind.TextNote);
 
@@ -230,6 +235,11 @@ export default function useEventPublisher() {
           }
         }
         processContent(ev, msg);
+        if (extraTags) {
+          for (const et of extraTags) {
+            ev.tags.push(et);
+          }
+        }
         return await signEvent(ev);
       }
     },
diff --git a/packages/app/src/lang.json b/packages/app/src/lang.json
index a36641f..806dd22 100644
--- a/packages/app/src/lang.json
+++ b/packages/app/src/lang.json
@@ -78,6 +78,9 @@
   "2k0Cv+": {
     "defaultMessage": "Dislikes ({n})"
   },
+  "3Rx6Qo": {
+    "defaultMessage": "Advanced"
+  },
   "3cc4Ct": {
     "defaultMessage": "Light"
   },
@@ -278,6 +281,9 @@
   "FDguSC": {
     "defaultMessage": "{n} Zaps"
   },
+  "FP+D3H": {
+    "defaultMessage": "LNURL to forward zaps to"
+  },
   "FS3b54": {
     "defaultMessage": "Done!"
   },
@@ -437,6 +443,9 @@
   "OLEm6z": {
     "defaultMessage": "Unknown login error"
   },
+  "P04gQm": {
+    "defaultMessage": "All zaps sent to this note will be received by the following LNURL"
+  },
   "P61BTu": {
     "defaultMessage": "Copy Event JSON"
   },
@@ -472,6 +481,9 @@
     "defaultMessage": "Art by {name}",
     "description": "Artwork attribution label"
   },
+  "R1fEdZ": {
+    "defaultMessage": "Forward Zaps"
+  },
   "R2OqnW": {
     "defaultMessage": "Delete Account"
   },
diff --git a/packages/app/src/translations/en.json b/packages/app/src/translations/en.json
index 592d640..8bb7e76 100644
--- a/packages/app/src/translations/en.json
+++ b/packages/app/src/translations/en.json
@@ -25,6 +25,7 @@
   "2LbrkB": "Enter password",
   "2a2YiP": "{n} Bookmarks",
   "2k0Cv+": "Dislikes ({n})",
+  "3Rx6Qo": "Advanced",
   "3cc4Ct": "Light",
   "3gOsZq": "Translators",
   "3t3kok": "{n,plural,=1{{n} new note} other{{n} new notes}}",
@@ -90,6 +91,7 @@
   "Eqjl5K": "Only Snort and our integration partner identifier gives you a colorful domain name, but you are welcome to use other services too.",
   "F+B3x1": "We have also partnered with nostrplebs.com to give you more options",
   "FDguSC": "{n} Zaps",
+  "FP+D3H": "LNURL to forward zaps to",
   "FS3b54": "Done!",
   "FfYsOb": "An error has occured!",
   "FmXUJg": "follows you",
@@ -142,6 +144,7 @@
   "OEW7yJ": "Zaps",
   "OKhRC6": "Share",
   "OLEm6z": "Unknown login error",
+  "P04gQm": "All zaps sent to this note will be received by the following LNURL",
   "P61BTu": "Copy Event JSON",
   "P7FD0F": "System (Default)",
   "P7nJT9": "Total today (UTC): {amount} sats",
@@ -153,6 +156,7 @@
   "QTdJfH": "Create an Account",
   "QawghE": "You can change your username at any point.",
   "QxCuTo": "Art by {name}",
+  "R1fEdZ": "Forward Zaps",
   "R2OqnW": "Delete Account",
   "RDZVQL": "Check",
   "RahCRH": "Expired",
@@ -321,4 +325,4 @@
   "zjJZBd": "You're ready!",
   "zonsdq": "Failed to load LNURL service",
   "zvCDao": "Automatically show latest notes"
-}
+}
\ No newline at end of file
diff --git a/packages/nostr/src/legacy/Tag.ts b/packages/nostr/src/legacy/Tag.ts
index d2ca31b..9b19783 100644
--- a/packages/nostr/src/legacy/Tag.ts
+++ b/packages/nostr/src/legacy/Tag.ts
@@ -12,6 +12,7 @@ export default class Tag {
   DTag?: string;
   Index: number;
   Invalid: boolean;
+  LNURL?: string;
 
   constructor(tag: string[], index: number) {
     this.Original = tag;
@@ -50,6 +51,10 @@ export default class Tag {
         this.PubKey = tag[1];
         break;
       }
+      case "zap": {
+        this.LNURL = tag[1];
+        break;
+      }
     }
   }