From 4bc543a6ec273748b56709a3b7d59ed72aad526c Mon Sep 17 00:00:00 2001
From: Patrick O'Sullivan <patrick@osullivan.io>
Date: Fri, 4 Mar 2022 12:46:16 -0600
Subject: [PATCH] groups: handle italic or bold markdown around @p's in
 messages

---
 .../src/views/components/MentionText.tsx      |  5 +-
 .../components/Graph/GraphContent.tsx         | 78 ++++++++++++++++++-
 2 files changed, 79 insertions(+), 4 deletions(-)

diff --git a/pkg/interface/src/views/components/MentionText.tsx b/pkg/interface/src/views/components/MentionText.tsx
index ea431485a..47a1a88f3 100644
--- a/pkg/interface/src/views/components/MentionText.tsx
+++ b/pkg/interface/src/views/components/MentionText.tsx
@@ -40,8 +40,9 @@ export function MentionText(props: MentionTextProps) {
 export function Mention(props: {
   ship: string;
   first?: boolean;
+  emphasis?: 'bold' | 'italic';
 } & PropFunc<typeof Text>) {
-  const { ship, first = false, ...rest } = props;
+  const { ship, first = false, emphasis, ...rest } = props;
   const contact = useContact(`~${deSig(ship)}`);
   const showNickname = useShowNickname(contact);
   const name = showNickname ? contact?.nickname : cite(ship);
@@ -51,8 +52,10 @@ export function Mention(props: {
         marginLeft={first? 0 : 1}
         marginRight={1}
         px={1}
+        bold={emphasis === 'bold' ? true : false}
         bg='washedBlue'
         color='blue'
+        fontStyle={emphasis === 'italic' ? 'italic' : undefined}
         fontSize={showNickname ? 1 : 0}
         mono={!showNickname}
         title={showNickname ? cite(ship) : contact?.nickname}
diff --git a/pkg/interface/src/views/landscape/components/Graph/GraphContent.tsx b/pkg/interface/src/views/landscape/components/Graph/GraphContent.tsx
index efb49a1f3..da2fa25ee 100644
--- a/pkg/interface/src/views/landscape/components/Graph/GraphContent.tsx
+++ b/pkg/interface/src/views/landscape/components/Graph/GraphContent.tsx
@@ -34,6 +34,72 @@ interface GraphMentionNode {
   ship: string;
 }
 
+const addEmphasisToMention = (contents: Content[], content: Content, index: number) => {
+  const prevContent = contents[index - 1];
+  const nextContent = contents[index + 1];
+
+  if (
+    'text' in content &&
+    (content.text.trim() === '**' || content.text.trim() === '*' )
+  )  {
+    return {
+      text: ''
+    };
+  }
+  if(
+    'text' in content &&
+    content.text.endsWith('*') &&
+    !content.text.startsWith('*') &&
+    nextContent !== undefined &&
+    'mention' in nextContent
+  ) {
+    if (content.text.charAt((content.text.length - 2)) === '*') {
+      return { text: content.text.slice(0, content.text.length - 2) };
+    }
+    return { text: content.text.slice(0, content.text.length - 1) };
+  }
+  if (
+    'text' in content &&
+    content.text.startsWith('*') &&
+    !content.text.endsWith('*') &&
+    prevContent !== undefined &&
+    'mention' in contents[index - 1]
+  ) {
+    if (content.text.charAt(1) === '*') {
+      return { text: content.text.slice(2, content.text.length) };
+    }
+    return { text: content.text.slice(1, content.text.length) };
+  }
+  if (
+    'mention' in content &&
+    prevContent !== undefined &&
+    'text' in prevContent &&
+    // @ts-ignore type guard above covers this.
+    prevContent.text.endsWith('*') &&
+    nextContent !== undefined &&
+    'text' in contents[index + 1] &&
+    // @ts-ignore type guard above covers this.
+    nextContent.text.startsWith('*')
+  ) {
+    if (
+      // @ts-ignore covered by typeguard in conditions
+      prevContent.text.charAt(prevContent.text.length - 2) === '*' &&
+      // @ts-ignore covered by typeguard in conditions
+      nextContent.text.charAt(nextContent.text[1]) === '*'
+    ) {
+      return {
+        mention: content.mention,
+        emphasis: 'bold'
+      };
+    }
+    return {
+      mention: content.mention,
+      emphasis: 'italic'
+    };
+  }
+  return content;
+};
+
 const codeToMdAst = (content: CodeContent) => {
   return {
     type: 'root',
@@ -100,7 +166,8 @@ const contentToMdAst = (tall: boolean) => (
         children: [
           {
             type: 'graph-mention',
-            ship: content.mention
+            ship: content.mention,
+            emphasis: content.emphasis
           }
         ]
       }
@@ -343,7 +410,9 @@ const renderers = {
   list: ({ depth, ordered, children }) => {
     return ordered ? <Ol>{children}</Ol> : <Ul>{children}</Ul>;
   },
-  'graph-mention': ({ ship }) => <Mention ship={ship} />,
+  'graph-mention': (obj) => {
+    return <Mention ship={obj.ship} emphasis={obj.emphasis} />;
+  },
   image: ({ url, tall }) => (
     <Box mt="1" mb="2" flexShrink={0}>
       <RemoteContent key={url} url={url} tall={tall} />
@@ -439,7 +508,10 @@ export const GraphContent = React.memo((
     transcluded = 0,
     ...rest
   } = props;
-  const [, ast] = stitchAsts(contents.map(contentToMdAst(tall)));
+  const [, ast] = stitchAsts(
+    contents
+    .map((content, index) => addEmphasisToMention(contents, content, index))
+    .map(contentToMdAst(tall)));
   return (
     <Box {...rest}>
       <Graphdown transcluded={transcluded} ast={ast} tall={tall} />