chore: refactoring and tests, splitting up files (#12495)

packages/app/src/context/file/watcher.ts

@@ -0,0 +1,52 @@
+import type { FileNode } from "@opencode-ai/sdk/v2"
+
+type WatcherEvent = {
+  type: string
+  properties: unknown
+}
+
+type WatcherOps = {
+  normalize: (input: string) => string
+  hasFile: (path: string) => boolean
+  loadFile: (path: string) => void
+  node: (path: string) => FileNode | undefined
+  isDirLoaded: (path: string) => boolean
+  refreshDir: (path: string) => void
+}
+
+export function invalidateFromWatcher(event: WatcherEvent, ops: WatcherOps) {
+  if (event.type !== "file.watcher.updated") return
+  const props =
+    typeof event.properties === "object" && event.properties ? (event.properties as Record<string, unknown>) : undefined
+  const rawPath = typeof props?.file === "string" ? props.file : undefined
+  const kind = typeof props?.event === "string" ? props.event : undefined
+  if (!rawPath) return
+  if (!kind) return
+
+  const path = ops.normalize(rawPath)
+  if (!path) return
+  if (path.startsWith(".git/")) return
+
+  if (ops.hasFile(path)) {
+    ops.loadFile(path)
+  }
+
+  if (kind === "change") {
+    const dir = (() => {
+      if (path === "") return ""
+      const node = ops.node(path)
+      if (node?.type !== "directory") return
+      return path
+    })()
+    if (dir === undefined) return
+    if (!ops.isDirLoaded(dir)) return
+    ops.refreshDir(dir)
+    return
+  }
+  if (kind !== "add" && kind !== "unlink") return
+
+  const parent = path.split("/").slice(0, -1).join("/")
+  if (!ops.isDirLoaded(parent)) return
+
+  ops.refreshDir(parent)
+}