✨ context menu for file tree

src/main/fileSystem.ts

@@ -1,5 +1,5 @@
-import { readdir, readFile, writeFile, mkdir, unlink } from 'fs/promises'
-import { join } from 'path'
+import { readdir, readFile, writeFile, mkdir, unlink, rename as fsRename, rm } from 'fs/promises'
+import { join, dirname } from 'path'
 import type { FileNode, RevisionMeta } from '../renderer/types/editor'
 
 const DRAFT_ROOT =
@@ -215,3 +215,37 @@ export async function deleteRevision(filePath: string, revisionId: string): Prom
   const revPath = join(REVISIONS_DIR, slug, `${revisionId}.json`)
   await unlink(revPath)
 }
+
+// ─── File tree mutations ──────────────────────────────────────────────────────
+
+export async function renameFileOrDir(oldPath: string, newName: string): Promise<string> {
+  assertInDraftRoot(oldPath)
+  const isFile = oldPath.endsWith('.md')
+  const newPath = join(dirname(oldPath), isFile ? `${newName}.md` : newName)
+  assertInDraftRoot(newPath)
+  await fsRename(oldPath, newPath)
+  return newPath
+}
+
+export async function deleteFileOrDir(targetPath: string): Promise<void> {
+  assertInDraftRoot(targetPath)
+  await rm(targetPath, { recursive: true, force: true })
+}
+
+export async function createMarkdownFile(parentPath: string, name: string): Promise<string> {
+  const dir = parentPath === '__root__' ? DRAFT_ROOT : parentPath
+  assertInDraftRoot(dir)
+  const filePath = join(dir, `${name}.md`)
+  assertInDraftRoot(filePath)
+  await writeFile(filePath, '', 'utf-8')
+  return filePath
+}
+
+export async function createSubdirectory(parentPath: string, name: string): Promise<string> {
+  const parent = parentPath === '__root__' ? DRAFT_ROOT : parentPath
+  assertInDraftRoot(parent)
+  const newDir = join(parent, name)
+  assertInDraftRoot(newDir)
+  await mkdir(newDir, { recursive: true })
+  return newDir
+}

src/main/ipcHandlers.ts

@@ -1,7 +1,7 @@
 import { ipcMain, dialog, BrowserWindow } from 'electron'
 import { readFileSync } from 'fs'
 import { extname, basename } from 'path'
-import { listDraftFiles, readMarkdownFile, writeMarkdownFile, getProjectWordCount, saveOrderFile, readSession, writeSession, saveRevision, listRevisions, loadRevision, deleteRevision } from './fileSystem'
+import { listDraftFiles, readMarkdownFile, writeMarkdownFile, getProjectWordCount, saveOrderFile, readSession, writeSession, saveRevision, listRevisions, loadRevision, deleteRevision, renameFileOrDir, deleteFileOrDir, createMarkdownFile, createSubdirectory } from './fileSystem'
 import { streamMessage } from './aiService'
 import type { AIPayload, Attachment } from '../renderer/types/editor'
 
@@ -50,6 +50,22 @@ export function registerIpcHandlers(): void {
     await deleteRevision(filePath, revisionId)
   })
 
+  ipcMain.handle('fs:rename', async (_event, oldPath: string, newName: string) => {
+    return await renameFileOrDir(oldPath, newName)
+  })
+
+  ipcMain.handle('fs:delete', async (_event, targetPath: string) => {
+    await deleteFileOrDir(targetPath)
+  })
+
+  ipcMain.handle('fs:createFile', async (_event, parentPath: string, name: string) => {
+    return await createMarkdownFile(parentPath, name)
+  })
+
+  ipcMain.handle('fs:createDir', async (_event, parentPath: string, name: string) => {
+    return await createSubdirectory(parentPath, name)
+  })
+
   ipcMain.handle('fs:pickAttachments', async (event): Promise<Attachment[]> => {
     const win = BrowserWindow.fromWebContents(event.sender)
     const result = await dialog.showOpenDialog(win!, {

src/preload/index.ts

@@ -69,5 +69,17 @@ contextBridge.exposeInMainWorld('api', {
     ipcRenderer.invoke('revisions:load', filePath, revisionId),
 
   deleteRevision: (filePath: string, revisionId: string): Promise<void> =>
-    ipcRenderer.invoke('revisions:delete', filePath, revisionId)
+    ipcRenderer.invoke('revisions:delete', filePath, revisionId),
+
+  renameNode: (oldPath: string, newName: string): Promise<string> =>
+    ipcRenderer.invoke('fs:rename', oldPath, newName),
+
+  deleteNode: (targetPath: string): Promise<void> =>
+    ipcRenderer.invoke('fs:delete', targetPath),
+
+  createFile: (parentPath: string, name: string): Promise<string> =>
+    ipcRenderer.invoke('fs:createFile', parentPath, name),
+
+  createDir: (parentPath: string, name: string): Promise<string> =>
+    ipcRenderer.invoke('fs:createDir', parentPath, name)
 })

src/renderer/components/FileTree/ContextMenu.tsx

@@ -0,0 +1,58 @@
+import { useEffect, useRef } from 'react'
+import { createPortal } from 'react-dom'
+
+export interface MenuItem {
+  label: string
+  action: () => void
+  danger?: boolean
+}
+
+interface Props {
+  x: number
+  y: number
+  items: (MenuItem | 'separator')[]
+  onClose: () => void
+}
+
+export function ContextMenu({ x, y, items, onClose }: Props): JSX.Element {
+  const ref = useRef<HTMLDivElement>(null)
+
+  useEffect(() => {
+    function handlePointerDown(e: MouseEvent): void {
+      if (ref.current && !ref.current.contains(e.target as Node)) {
+        onClose()
+      }
+    }
+    function handleKeyDown(e: KeyboardEvent): void {
+      if (e.key === 'Escape') onClose()
+    }
+    document.addEventListener('mousedown', handlePointerDown)
+    document.addEventListener('keydown', handleKeyDown)
+    return () => {
+      document.removeEventListener('mousedown', handlePointerDown)
+      document.removeEventListener('keydown', handleKeyDown)
+    }
+  }, [onClose])
+
+  return createPortal(
+    <div className="context-menu" style={{ left: x, top: y }} ref={ref}>
+      {items.map((item, i) =>
+        item === 'separator' ? (
+          <div key={i} className="context-menu-separator" />
+        ) : (
+          <button
+            key={i}
+            className={`context-menu-item${item.danger ? ' danger' : ''}`}
+            onClick={() => {
+              onClose()
+              item.action()
+            }}
+          >
+            {item.label}
+          </button>
+        )
+      )}
+    </div>,
+    document.body
+  )
+}

src/renderer/components/FileTree/FileTree.css

@@ -92,3 +92,67 @@
 .tree-dir-header.drag-over {
   box-shadow: inset 0 -2px 0 var(--accent);
 }
+
+/* ── Inline rename / create input ─────────────────────────────────────── */
+
+.tree-rename-input {
+  display: block;
+  width: calc(100% - 8px);
+  background: var(--bg-secondary, #1e1e1e);
+  border: 1px solid var(--accent);
+  border-radius: 3px;
+  color: var(--text-primary);
+  font-family: var(--font-serif);
+  font-size: 12px;
+  padding: 4px 6px;
+  margin: 1px 4px;
+  outline: none;
+  box-sizing: border-box;
+}
+
+/* ── Context menu ──────────────────────────────────────────────────────── */
+
+.context-menu {
+  position: fixed;
+  min-width: 140px;
+  background: var(--bg-secondary, #1e1e1e);
+  border: 1px solid var(--border);
+  border-radius: 5px;
+  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
+  padding: 4px 0;
+  z-index: 9999;
+  user-select: none;
+}
+
+.context-menu-item {
+  display: block;
+  width: 100%;
+  background: none;
+  border: none;
+  color: var(--text-secondary);
+  font-size: 12px;
+  padding: 6px 14px;
+  text-align: left;
+  cursor: pointer;
+  transition: background 0.1s, color 0.1s;
+}
+
+.context-menu-item:hover {
+  background: var(--hover-bg);
+  color: var(--text-primary);
+}
+
+.context-menu-item.danger {
+  color: #e06c6c;
+}
+
+.context-menu-item.danger:hover {
+  background: rgba(224, 108, 108, 0.12);
+  color: #e06c6c;
+}
+
+.context-menu-separator {
+  height: 1px;
+  background: var(--border);
+  margin: 4px 0;
+}

src/renderer/components/FileTree/FileTreeNode.tsx

@@ -1,6 +1,8 @@
 import { useState } from 'react'
 import { useEditorStore } from '../../store/editorStore'
 import type { FileNode } from '../../types/editor'
+import { ContextMenu } from './ContextMenu'
+import type { MenuItem } from './ContextMenu'
 
 interface DndPayload {
   name: string
@@ -16,7 +18,13 @@ interface Props {
 
 export function FileTreeNode({ node, depth, dirPath, siblings }: Props): JSX.Element {
   const [expanded, setExpanded] = useState(true)
-  const { activeFilePath, setActiveFile, moveNode } = useEditorStore()
+  const [menuPos, setMenuPos] = useState<{ x: number; y: number } | null>(null)
+  const [renaming, setRenaming] = useState(false)
+  const [renameValue, setRenameValue] = useState('')
+  const [creatingChild, setCreatingChild] = useState<'file' | 'dir' | null>(null)
+  const [createValue, setCreateValue] = useState('')
+
+  const { activeFilePath, setActiveFile, moveNode, setFileTree, clearActiveFile } = useEditorStore()
 
   const openFile = async (): Promise<void> => {
     if (node.type === 'file') {
@@ -59,52 +67,220 @@ export function FileTreeNode({ node, depth, dirPath, siblings }: Props): JSX.Ele
     }
   }
 
+  function handleContextMenu(e: React.MouseEvent): void {
+    e.preventDefault()
+    e.stopPropagation()
+    setMenuPos({ x: e.clientX, y: e.clientY })
+  }
+
+  async function refreshTree(): Promise<void> {
+    const tree = await window.api.listFiles()
+    setFileTree(tree)
+  }
+
+  function startRename(): void {
+    setRenameValue(node.name)
+    setRenaming(true)
+  }
+
+  async function submitRename(): Promise<void> {
+    const trimmed = renameValue.trim()
+    setRenaming(false)
+    if (!trimmed || trimmed === node.name) return
+    try {
+      const newPath = await window.api.renameNode(node.path, trimmed)
+      if (activeFilePath === node.path) {
+        const content = await window.api.readFile(newPath)
+        setActiveFile(newPath, content)
+      }
+      await refreshTree()
+    } catch (err) {
+      console.error('Rename failed:', err)
+    }
+  }
+
+  async function submitDelete(): Promise<void> {
+    const label = node.type === 'directory' ? `folder "${node.name}"` : `"${node.name}"`
+    if (!confirm(`Delete ${label}? This cannot be undone.`)) return
+    try {
+      if (activeFilePath && (activeFilePath === node.path || activeFilePath.startsWith(node.path + '/'))) {
+        clearActiveFile()
+      }
+      await window.api.deleteNode(node.path)
+      await refreshTree()
+    } catch (err) {
+      console.error('Delete failed:', err)
+    }
+  }
+
+  async function submitCreateChild(): Promise<void> {
+    const trimmed = createValue.trim()
+    setCreatingChild(null)
+    setCreateValue('')
+    if (!trimmed) return
+    try {
+      if (creatingChild === 'file') {
+        await window.api.createFile(node.path, trimmed)
+      } else {
+        await window.api.createDir(node.path, trimmed)
+      }
+      await refreshTree()
+    } catch (err) {
+      console.error('Create failed:', err)
+    }
+  }
+
+  const menuItems: (MenuItem | 'separator')[] =
+    node.type === 'directory'
+      ? [
+          {
+            label: 'New File',
+            action: () => {
+              setExpanded(true)
+              setCreatingChild('file')
+              setCreateValue('')
+            }
+          },
+          {
+            label: 'New Folder',
+            action: () => {
+              setExpanded(true)
+              setCreatingChild('dir')
+              setCreateValue('')
+            }
+          },
+          'separator',
+          { label: 'Rename', action: startRename },
+          { label: 'Delete', action: submitDelete, danger: true }
+        ]
+      : [
+          { label: 'Rename', action: startRename },
+          { label: 'Delete', action: submitDelete, danger: true }
+        ]
+
   if (node.type === 'directory') {
     return (
       <div className="tree-dir">
-        <button
-          className="tree-dir-header"
-          style={{ paddingLeft: `${depth * 12 + 8}px` }}
-          onClick={() => setExpanded(!expanded)}
-          draggable={true}
-          onDragStart={handleDragStart}
-          onDragEnd={handleDragEnd}
-          onDragOver={handleDragOver}
-          onDragLeave={handleDragLeave}
-          onDrop={handleDrop}
-        >
-          <span className="tree-arrow">{expanded ? '▾' : '▸'}</span>
-          {node.name}
-        </button>
-        {expanded && node.children?.map((child) => (
-          <FileTreeNode
-            key={child.path}
-            node={child}
-            depth={depth + 1}
-            dirPath={node.path}
-            siblings={node.children!}
+        {renaming ? (
+          <input
+            className="tree-rename-input"
+            style={{ paddingLeft: `${depth * 12 + 8}px` }}
+            value={renameValue}
+            onChange={(e) => setRenameValue(e.target.value)}
+            onKeyDown={(e) => {
+              if (e.key === 'Enter') submitRename()
+              if (e.key === 'Escape') setRenaming(false)
+            }}
+            onBlur={submitRename}
+            autoFocus
           />
-        ))}
+        ) : (
+          <button
+            className="tree-dir-header"
+            style={{ paddingLeft: `${depth * 12 + 8}px` }}
+            onClick={() => setExpanded(!expanded)}
+            onContextMenu={handleContextMenu}
+            draggable={true}
+            onDragStart={handleDragStart}
+            onDragEnd={handleDragEnd}
+            onDragOver={handleDragOver}
+            onDragLeave={handleDragLeave}
+            onDrop={handleDrop}
+          >
+            <span className="tree-arrow">{expanded ? '▾' : '▸'}</span>
+            {node.name}
+          </button>
+        )}
+        {expanded && (
+          <>
+            {creatingChild && (
+              <input
+                className="tree-rename-input"
+                style={{ paddingLeft: `${(depth + 1) * 12 + 20}px` }}
+                value={createValue}
+                onChange={(e) => setCreateValue(e.target.value)}
+                onKeyDown={(e) => {
+                  if (e.key === 'Enter') submitCreateChild()
+                  if (e.key === 'Escape') {
+                    setCreatingChild(null)
+                    setCreateValue('')
+                  }
+                }}
+                onBlur={() => {
+                  setCreatingChild(null)
+                  setCreateValue('')
+                }}
+                placeholder={creatingChild === 'file' ? 'file name' : 'folder name'}
+                autoFocus
+              />
+            )}
+            {node.children?.map((child) => (
+              <FileTreeNode
+                key={child.path}
+                node={child}
+                depth={depth + 1}
+                dirPath={node.path}
+                siblings={node.children!}
+              />
+            ))}
+          </>
+        )}
+        {menuPos && (
+          <ContextMenu
+            x={menuPos.x}
+            y={menuPos.y}
+            items={menuItems}
+            onClose={() => setMenuPos(null)}
+          />
+        )}
       </div>
     )
   }
 
   const isActive = activeFilePath === node.path
 
+  if (renaming) {
+    return (
+      <input
+        className="tree-rename-input"
+        style={{ paddingLeft: `${depth * 12 + 20}px` }}
+        value={renameValue}
+        onChange={(e) => setRenameValue(e.target.value)}
+        onKeyDown={(e) => {
+          if (e.key === 'Enter') submitRename()
+          if (e.key === 'Escape') setRenaming(false)
+        }}
+        onBlur={submitRename}
+        autoFocus
+      />
+    )
+  }
+
   return (
-    <button
-      className={`tree-file${isActive ? ' active' : ''}`}
-      style={{ paddingLeft: `${depth * 12 + 20}px` }}
-      onClick={openFile}
-      title={node.name}
-      draggable={true}
-      onDragStart={handleDragStart}
-      onDragEnd={handleDragEnd}
-      onDragOver={handleDragOver}
-      onDragLeave={handleDragLeave}
-      onDrop={handleDrop}
-    >
-      {node.name}
-    </button>
+    <>
+      <button
+        className={`tree-file${isActive ? ' active' : ''}`}
+        style={{ paddingLeft: `${depth * 12 + 20}px` }}
+        onClick={openFile}
+        onContextMenu={handleContextMenu}
+        title={node.name}
+        draggable={true}
+        onDragStart={handleDragStart}
+        onDragEnd={handleDragEnd}
+        onDragOver={handleDragOver}
+        onDragLeave={handleDragLeave}
+        onDrop={handleDrop}
+      >
+        {node.name}
+      </button>
+      {menuPos && (
+        <ContextMenu
+          x={menuPos.x}
+          y={menuPos.y}
+          items={menuItems}
+          onClose={() => setMenuPos(null)}
+        />
+      )}
+    </>
   )
 }

src/renderer/store/editorStore.ts

@@ -48,6 +48,9 @@ interface EditorState {
   // File tree reordering
   moveNode: (dirPath: string, fromIdx: number, toIdx: number) => void
 
+  // Clear active file (e.g. after deletion)
+  clearActiveFile: () => void
+
   // Word counts
   projectWordCount: number
   setProjectWordCount: (count: number) => void
@@ -115,6 +118,8 @@ export const useEditorStore = create<EditorState>((set, get) => ({
     })
   },
 
+  clearActiveFile: () => set({ activeFilePath: null, activeFileContent: '', isDirty: false }),
+
   activeFilePath: null,
   activeFileContent: '',
   isDirty: false,

src/renderer/types/global.d.ts

@@ -18,6 +18,10 @@ declare global {
       listRevisions: (filePath: string) => Promise<RevisionMeta[]>
       loadRevision: (filePath: string, revisionId: string) => Promise<string>
       deleteRevision: (filePath: string, revisionId: string) => Promise<void>
+      renameNode: (oldPath: string, newName: string) => Promise<string>
+      deleteNode: (targetPath: string) => Promise<void>
+      createFile: (parentPath: string, name: string) => Promise<string>
+      createDir: (parentPath: string, name: string) => Promise<string>
     }
   }
 }