Add web share for browsers that have it enabled (#1029)

Co-authored-by: Dessalines <dessalines@users.noreply.github.com>

src/assets/symbols.svg

@@ -251,5 +251,12 @@
     <symbol id="icon-superscript" viewBox="0 0 20 20">
       <path d="M17.5 1h.5V0h-.5a1.49 1.49 0 0 0-1 .39 1.49 1.49 0 0 0-1-.39H15v1h.5a.5.5 0 0 1 .5.5v6a.5.5 0 0 1-.5.5H15v1h.5a1.49 1.49 0 0 0 1-.39 1.49 1.49 0 0 0 1 .39h.5V8h-.5a.5.5 0 0 1-.5-.5v-6a.5.5 0 0 1 .5-.5zm-3.82 15h-2.42a.67.67 0 0 1-.46-.15 1.33 1.33 0 0 1-.28-.34l-2.77-4.44a2.65 2.65 0 0 1-.28.69L5 15.51a2.22 2.22 0 0 1-.29.34.58.58 0 0 1-.42.15H2l4.15-6.19L2.17 4h2.42a.81.81 0 0 1 .41.09.8.8 0 0 1 .24.26L8 8.59a2.71 2.71 0 0 1 .33-.74L10.6 4.4a.69.69 0 0 1 .6-.4h2.32l-4 5.71z" />
     </symbol>
+    <symbol id="icon-share" viewBox="0 0 24 24">
+      <path d="M21 6C21 7.65685 19.6569 9 18 9C16.3431 9 15 7.65685 15 6C15 4.34315 16.3431 3 18 3C19.6569 3 21 4.34315 21 6Z" stroke-width="2"/>
+      <path d="M21 18C21 19.6569 19.6569 21 18 21C16.3431 21 15 19.6569 15 18C15 16.3431 16.3431 15 18 15C19.6569 15 21 16.3431 21 18Z" stroke-width="2"/>
+      <path d="M9 12C9 13.6569 7.65685 15 6 15C4.34315 15 3 13.6569 3 12C3 10.3431 4.34315 9 6 9C7.65685 9 9 10.3431 9 12Z" stroke-width="2"/>
+      <path d="M8.72046 10.6397L14.9999 7.5" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+      <path d="M8.70605 13.353L15 16.5" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+    </symbol>
   </defs>
 </svg>

src/shared/components/post/post-listing.tsx

@@ -22,7 +22,7 @@ import {
   SavePost,
   TransferCommunity,
 } from "lemmy-js-client";
-import { getExternalHost } from "../../env";
+import { getExternalHost, getHttpBase } from "../../env";
 import { i18n } from "../../i18next";
 import { BanType, PostFormParams, PurgeType } from "../../interfaces";
 import { UserService, WebSocketService } from "../../services";
@@ -32,6 +32,7 @@ import {
   amMod,
   canAdmin,
   canMod,
+  canShare,
   futureDaysToUnixTime,
   hostname,
   isAdmin,
@@ -46,6 +47,7 @@ import {
   numToSI,
   relTags,
   setupTippy,
+  share,
   showScores,
   wsClient,
 } from "../../utils";
@@ -567,9 +569,19 @@ export class PostListing extends Component<PostListingProps, PostListingState> {
 
   commentsLine(mobile = false) {
     let post = this.props.post_view.post;
+
     return (
       <div className="d-flex justify-content-start flex-wrap text-muted font-weight-bold mb-1">
         {this.commentsButton}
+        {canShare() && (
+          <button
+            className="btn btn-link"
+            onClick={linkEvent(this, this.handleShare)}
+            type="button"
+          >
+            <Icon icon="share" inline />
+          </button>
+        )}
         {!post.local && (
           <a
             className="btn btn-link btn-animate text-muted py-0"
@@ -1406,6 +1418,15 @@ export class PostListing extends Component<PostListingProps, PostListingState> {
     this.setState({ showEdit: false });
   }
 
+  handleShare(i: PostListing) {
+    const { name, body, id } = i.props.post_view.post;
+    share({
+      title: name,
+      text: body?.slice(0, 50),
+      url: `${getHttpBase()}/post/${id}`,
+    });
+  }
+
   handleShowReportDialog(i: PostListing) {
     i.setState({ showReportDialog: !i.state.showReportDialog });
   }

src/shared/utils.ts

@@ -1593,3 +1593,13 @@ export function isAuthPath(pathname: string) {
     pathname
   );
 }
+
+export function canShare() {
+  return isBrowser() && !!navigator.canShare;
+}
+
+export function share(shareData: ShareData) {
+  if (isBrowser()) {
+    navigator.share(shareData);
+  }
+}