From 9f6a267fd43815c9a3f36935b0e96342cbc9f3bb Mon Sep 17 00:00:00 2001
From: Shashank Budhanuru Ramaraju <shabr@ebi.ac.uk>
Date: Tue, 3 Feb 2026 15:29:21 +0000
Subject: [PATCH] duplicate transcript

---
 .../LinearApolloDisplay/glyphs/GeneGlyph.ts   |  66 ++++++---
 .../src/components/DuplicateTranscript.tsx    | 132 ++++++++++++++++++
 2 files changed, 178 insertions(+), 20 deletions(-)
 create mode 100644 packages/jbrowse-plugin-apollo/src/components/DuplicateTranscript.tsx

diff --git a/packages/jbrowse-plugin-apollo/src/LinearApolloDisplay/glyphs/GeneGlyph.ts b/packages/jbrowse-plugin-apollo/src/LinearApolloDisplay/glyphs/GeneGlyph.ts
index 7123111f6..7c99a80f9 100644
--- a/packages/jbrowse-plugin-apollo/src/LinearApolloDisplay/glyphs/GeneGlyph.ts
+++ b/packages/jbrowse-plugin-apollo/src/LinearApolloDisplay/glyphs/GeneGlyph.ts
@@ -14,6 +14,7 @@ import { alpha } from '@mui/material'
 
 import { type OntologyRecord } from '../../OntologyManager'
 import { MergeExons, MergeTranscripts, SplitExon } from '../../components'
+import { DuplicateTranscript } from '../../components/DuplicateTranscript'
 import {
   type MousePosition,
   type MousePositionWithFeature,
@@ -950,29 +951,54 @@ function getContextMenuItems(
         )
       }
       if (isTranscriptFeature(feature, session)) {
-        contextMenuItemsForFeature.push({
-          label: 'Merge transcript',
-          onClick: () => {
-            ;(session as unknown as AbstractSessionModel).queueDialog(
-              (doneCallback) => [
-                MergeTranscripts,
-                {
-                  session,
-                  handleClose: () => {
-                    doneCallback()
+        contextMenuItemsForFeature.push(
+          {
+            label: 'Merge transcript',
+            onClick: () => {
+              ;(session as unknown as AbstractSessionModel).queueDialog(
+                (doneCallback) => [
+                  MergeTranscripts,
+                  {
+                    session,
+                    handleClose: () => {
+                      doneCallback()
+                    },
+                    changeManager,
+                    sourceFeature: feature,
+                    sourceAssemblyId: currentAssemblyId,
+                    selectedFeature,
+                    setSelectedFeature: (feature?: AnnotationFeature) => {
+                      display.setSelectedFeature(feature)
+                    },
                   },
-                  changeManager,
-                  sourceFeature: feature,
-                  sourceAssemblyId: currentAssemblyId,
-                  selectedFeature,
-                  setSelectedFeature: (feature?: AnnotationFeature) => {
-                    display.setSelectedFeature(feature)
+                ],
+              )
+            },
+          },
+          {
+            label: 'Duplicate transcript',
+            onClick: () => {
+              ;(session as unknown as AbstractSessionModel).queueDialog(
+                (doneCallback) => [
+                  DuplicateTranscript,
+                  {
+                    session,
+                    handleClose: () => {
+                      doneCallback()
+                    },
+                    changeManager,
+                    sourceFeature: feature,
+                    sourceAssemblyId: currentAssemblyId,
+                    selectedFeature,
+                    setSelectedFeature: (feature?: AnnotationFeature) => {
+                      display.setSelectedFeature(feature)
+                    },
                   },
-                },
-              ],
-            )
+                ],
+              )
+            },
           },
-        })
+        )
         if (isSessionModelWithWidgets(session)) {
           contextMenuItemsForFeature.splice(1, 0, {
             label: 'Open transcript editor',
diff --git a/packages/jbrowse-plugin-apollo/src/components/DuplicateTranscript.tsx b/packages/jbrowse-plugin-apollo/src/components/DuplicateTranscript.tsx
new file mode 100644
index 000000000..8d68df06c
--- /dev/null
+++ b/packages/jbrowse-plugin-apollo/src/components/DuplicateTranscript.tsx
@@ -0,0 +1,132 @@
+/* eslint-disable @typescript-eslint/unbound-method */
+import {
+  type AnnotationFeature,
+  type AnnotationFeatureSnapshot,
+} from '@apollo-annotation/mst'
+import { AddFeatureChange } from '@apollo-annotation/shared'
+import { type AbstractSessionModel } from '@jbrowse/core/util/types'
+import {
+  Button,
+  DialogActions,
+  DialogContent,
+  DialogContentText,
+} from '@mui/material'
+import ObjectID from 'bson-objectid'
+import { getSnapshot } from 'mobx-state-tree'
+import React, { useState } from 'react'
+
+import { type ChangeManager } from '../ChangeManager'
+import { type ApolloSessionModel } from '../session'
+
+import { Dialog } from './Dialog'
+
+interface DuplicateTranscriptProps {
+  session: ApolloSessionModel
+  handleClose(): void
+  sourceFeature: AnnotationFeature
+  sourceAssemblyId: string
+  changeManager: ChangeManager
+  selectedFeature?: AnnotationFeature
+  setSelectedFeature(feature?: AnnotationFeature): void
+}
+
+export function DuplicateTranscript({
+  changeManager,
+  handleClose,
+  session,
+  sourceAssemblyId,
+  sourceFeature,
+  setSelectedFeature,
+}: DuplicateTranscriptProps) {
+  const [errorMessage, setErrorMessage] = useState('')
+  const { notify } = session as unknown as AbstractSessionModel
+
+  async function onSubmit(event: React.FormEvent<HTMLFormElement>) {
+    event.preventDefault()
+    setErrorMessage('')
+
+    try {
+      const parentGene = sourceFeature.parent
+      if (!parentGene) {
+        setErrorMessage('No parent gene found for this transcript')
+        return
+      }
+
+      const transcriptSnapshot = getSnapshot(sourceFeature)
+      const newTranscriptId = new ObjectID().toHexString()
+      const duplicateTranscript = {
+        ...transcriptSnapshot,
+        _id: newTranscriptId,
+      } as AnnotationFeatureSnapshot
+
+      if (duplicateTranscript.children) {
+        const newChildren: Record<string, AnnotationFeatureSnapshot> = {}
+        for (const [, child] of Object.entries(duplicateTranscript.children)) {
+          const newChildId = new ObjectID().toHexString()
+          newChildren[newChildId] = {
+            ...child,
+            _id: newChildId,
+          } as AnnotationFeatureSnapshot
+        }
+        duplicateTranscript.children = newChildren
+      }
+
+      const change = new AddFeatureChange({
+        parentFeatureId: parentGene._id,
+        changedIds: [parentGene._id],
+        typeName: 'AddFeatureChange',
+        assembly: sourceAssemblyId,
+        addedFeature: duplicateTranscript,
+      })
+
+      await changeManager.submit(change).then(() => {
+        setSelectedFeature(undefined)
+        session.apolloSetSelectedFeature(newTranscriptId)
+        notify('Successfully duplicated transcript', 'success')
+      })
+
+      handleClose()
+    } catch (error) {
+      setErrorMessage(
+        error instanceof Error
+          ? error.message
+          : 'Failed to duplicate transcript',
+      )
+    }
+  }
+
+  return (
+    <Dialog
+      open
+      title="Duplicate transcript"
+      handleClose={handleClose}
+      maxWidth={false}
+      data-testid="duplicate-transcript"
+    >
+      <form
+        onSubmit={(event) => {
+          void onSubmit(event)
+        }}
+      >
+        <DialogContent style={{ display: 'flex', flexDirection: 'column' }}>
+          <DialogContentText>
+            Are you sure you want to create a duplicate of this transcript?
+          </DialogContentText>
+        </DialogContent>
+        <DialogActions>
+          <Button variant="contained" type="submit">
+            Yes
+          </Button>
+          <Button variant="outlined" type="submit" onClick={handleClose}>
+            Cancel
+          </Button>
+        </DialogActions>
+      </form>
+      {errorMessage ? (
+        <DialogContent>
+          <DialogContentText color="error">{errorMessage}</DialogContentText>
+        </DialogContent>
+      ) : null}
+    </Dialog>
+  )
+}