Migrate to remark

frontend/src/utils/remarkWikiLinks.js

@@ -0,0 +1,165 @@
+import { visit } from 'unist-util-visit';
+import { lookupFileByName, getFileUrl } from '../services/api';
+
+function createNotFoundLink(fileName, displayText, baseUrl) {
+  return {
+    type: 'link',
+    url: `${baseUrl}/notfound/${encodeURIComponent(fileName)}`,
+    children: [{ type: 'text', value: displayText }],
+    data: {
+      hProperties: { style: { color: 'red', textDecoration: 'underline' } },
+    },
+  };
+}
+
+function createFileLink(filePath, displayText, heading, baseUrl) {
+  const url = heading
+    ? `${baseUrl}/internal/${encodeURIComponent(filePath)}#${encodeURIComponent(
+        heading
+      )}`
+    : `${baseUrl}/internal/${encodeURIComponent(filePath)}`;
+
+  return {
+    type: 'link',
+    url,
+    children: [{ type: 'text', value: displayText }],
+  };
+}
+
+function createImageNode(workspaceId, filePath, displayText) {
+  return {
+    type: 'image',
+    url: getFileUrl(workspaceId, filePath),
+    alt: displayText,
+    title: displayText,
+  };
+}
+
+function addMarkdownExtension(fileName) {
+  if (fileName.includes('.')) {
+    return fileName;
+  }
+  return `${fileName}.md`;
+}
+
+export function remarkWikiLinks(workspaceId) {
+  return async function transformer(tree) {
+    if (!workspaceId) {
+      console.warn('No workspace ID provided to remarkWikiLinks plugin');
+      return;
+    }
+
+    const baseUrl = window.API_BASE_URL;
+    const replacements = new Map();
+
+    // Find all wiki links
+    visit(tree, 'text', function (node) {
+      const regex = /(!?)\[\[(.*?)\]\]/g;
+      let match;
+      const matches = [];
+
+      while ((match = regex.exec(node.value)) !== null) {
+        const [fullMatch, isImage, innerContent] = match;
+        let fileName, displayText, heading;
+
+        // Parse the inner content
+        const pipeIndex = innerContent.indexOf('|');
+        const hashIndex = innerContent.indexOf('#');
+
+        if (pipeIndex !== -1) {
+          displayText = innerContent.slice(pipeIndex + 1).trim();
+          fileName = innerContent.slice(0, pipeIndex).trim();
+        } else {
+          displayText = innerContent;
+          fileName = innerContent;
+        }
+
+        if (hashIndex !== -1 && (pipeIndex === -1 || hashIndex < pipeIndex)) {
+          heading = fileName.slice(hashIndex + 1).trim();
+          fileName = fileName.slice(0, hashIndex).trim();
+        }
+
+        matches.push({
+          fullMatch,
+          isImage,
+          fileName,
+          displayText,
+          heading,
+          index: match.index,
+        });
+      }
+
+      if (matches.length > 0) {
+        replacements.set(node, matches);
+      }
+    });
+
+    // Process all matches
+    for (const [node, matches] of replacements) {
+      const children = [];
+      let lastIndex = 0;
+
+      for (const match of matches) {
+        // Add text before the match
+        if (match.index > lastIndex) {
+          children.push({
+            type: 'text',
+            value: node.value.slice(lastIndex, match.index),
+          });
+        }
+
+        try {
+          // Add .md extension for non-image files if they don't have an extension
+          const lookupFileName = match.isImage
+            ? match.fileName
+            : addMarkdownExtension(match.fileName);
+
+          const paths = await lookupFileByName(workspaceId, lookupFileName);
+
+          if (paths && paths.length > 0) {
+            const filePath = paths[0];
+            if (match.isImage) {
+              children.push(
+                createImageNode(workspaceId, filePath, match.displayText)
+              );
+            } else {
+              children.push(
+                createFileLink(
+                  filePath,
+                  match.displayText,
+                  match.heading,
+                  baseUrl
+                )
+              );
+            }
+          } else {
+            children.push(
+              createNotFoundLink(match.fileName, match.displayText, baseUrl)
+            );
+          }
+        } catch (error) {
+          // Handle both 404s and other errors by creating a "not found" link
+          console.debug('File lookup failed:', match.fileName, error);
+          children.push(
+            createNotFoundLink(match.fileName, match.displayText, baseUrl)
+          );
+        }
+
+        lastIndex = match.index + match.fullMatch.length;
+      }
+
+      // Add any remaining text
+      if (lastIndex < node.value.length) {
+        children.push({
+          type: 'text',
+          value: node.value.slice(lastIndex),
+        });
+      }
+
+      // Replace the node with new children
+      node.type = 'paragraph';
+      node.children = children;
+      delete node.value;
+    }
+  };
+}