fix(app): better review/filetree empty states (#16221)

Co-authored-by: Adam <2363879+adamdotdevin@users.noreply.github.com>

packages/app/src/pages/session.tsx

@@ -1,4 +1,4 @@
-import type { UserMessage } from "@opencode-ai/sdk/v2"
+import type { Project, UserMessage } from "@opencode-ai/sdk/v2"
 import { useDialog } from "@opencode-ai/ui/context/dialog"
 import {
   onCleanup,
@@ -20,11 +20,13 @@ import { createStore } from "solid-js/store"
 import { ResizeHandle } from "@opencode-ai/ui/resize-handle"
 import { Select } from "@opencode-ai/ui/select"
 import { createAutoScroll } from "@opencode-ai/ui/hooks"
-import { Mark } from "@opencode-ai/ui/logo"
+import { Button } from "@opencode-ai/ui/button"
+import { showToast } from "@opencode-ai/ui/toast"
 import { base64Encode, checksum } from "@opencode-ai/util/encode"
 import { useNavigate, useParams, useSearchParams } from "@solidjs/router"
 import { NewSessionView, SessionHeader } from "@/components/session"
 import { useComments } from "@/context/comments"
+import { useGlobalSync } from "@/context/global-sync"
 import { useLanguage } from "@/context/language"
 import { useLayout } from "@/context/layout"
 import { usePrompt } from "@/context/prompt"
@@ -41,6 +43,7 @@ import { TerminalPanel } from "@/pages/session/terminal-panel"
 import { useSessionCommands } from "@/pages/session/use-session-commands"
 import { useSessionHashScroll } from "@/pages/session/use-session-hash-scroll"
 import { same } from "@/utils/same"
+import { formatServerError } from "@/utils/server-errors"
 
 const emptyUserMessages: UserMessage[] = []
 
@@ -252,6 +255,7 @@ function createSessionHistoryWindow(input: SessionHistoryWindowInput) {
 }
 
 export default function Page() {
+  const globalSync = useGlobalSync()
   const layout = useLayout()
   const local = useLocal()
   const file = useFile()
@@ -278,6 +282,7 @@ export default function Page() {
   })
 
   const [ui, setUi] = createStore({
+    git: false,
     pendingMessage: undefined as string | undefined,
     scrollGesture: 0,
     scroll: {
@@ -494,6 +499,46 @@ export default function Page() {
     return "session.review.noVcs"
   })
 
+  function upsert(next: Project) {
+    const list = globalSync.data.project
+    sync.set("project", next.id)
+    const idx = list.findIndex((item) => item.id === next.id)
+    if (idx >= 0) {
+      globalSync.set(
+        "project",
+        list.map((item, i) => (i === idx ? { ...item, ...next } : item)),
+      )
+      return
+    }
+    const at = list.findIndex((item) => item.id > next.id)
+    if (at >= 0) {
+      globalSync.set("project", [...list.slice(0, at), next, ...list.slice(at)])
+      return
+    }
+    globalSync.set("project", [...list, next])
+  }
+
+  function initGit() {
+    if (ui.git) return
+    setUi("git", true)
+    void sdk.client.project
+      .initGit()
+      .then((x) => {
+        if (!x.data) return
+        upsert(x.data)
+      })
+      .catch((err) => {
+        showToast({
+          variant: "error",
+          title: language.t("common.requestFailed"),
+          description: formatServerError(err, language.t),
+        })
+      })
+      .finally(() => {
+        setUi("git", false)
+      })
+  }
+
   let inputRef!: HTMLDivElement
   let promptDock: HTMLDivElement | undefined
   let dockHeight = 0
@@ -727,23 +772,28 @@ export default function Page() {
   const changesOptions = ["session", "turn"] as const
   const changesOptionsList = [...changesOptions]
 
-  const changesTitle = () => (
-    <Select
-      options={changesOptionsList}
-      current={store.changes}
-      label={(option) =>
-        option === "session" ? language.t("ui.sessionReview.title") : language.t("ui.sessionReview.title.lastTurn")
-      }
-      onSelect={(option) => option && setStore("changes", option)}
-      variant="ghost"
-      size="small"
-      valueClass="text-14-medium"
-    />
-  )
+  const changesTitle = () => {
+    if (!hasReview()) {
+      return null
+    }
+
+    return (
+      <Select
+        options={changesOptionsList}
+        current={store.changes}
+        label={(option) =>
+          option === "session" ? language.t("ui.sessionReview.title") : language.t("ui.sessionReview.title.lastTurn")
+        }
+        onSelect={(option) => option && setStore("changes", option)}
+        variant="ghost"
+        size="small"
+        valueClass="text-14-medium"
+      />
+    )
+  }
 
   const emptyTurn = () => (
     <div class="h-full pb-30 flex flex-col items-center justify-center text-center gap-6">
-      <Mark class="w-14 opacity-10" />
       <div class="text-14-regular text-text-weak max-w-56">{language.t("session.review.noChanges")}</div>
     </div>
   )
@@ -809,9 +859,23 @@ export default function Page() {
             empty={
               store.changes === "turn" ? (
                 emptyTurn()
+              ) : reviewEmptyKey() === "session.review.noVcs" ? (
+                <div class={input.emptyClass}>
+                  <div class="flex flex-col gap-3">
+                    <div class="text-14-medium text-text-strong">Create a Git repository</div>
+                    <div
+                      class="text-14-regular text-text-base max-w-md"
+                      style={{ "line-height": "var(--line-height-normal)" }}
+                    >
+                      Track, review, and undo changes in this project
+                    </div>
+                  </div>
+                  <Button size="large" disabled={ui.git} onClick={initGit}>
+                    {ui.git ? "Creating Git repository..." : "Create Git repository"}
+                  </Button>
+                </div>
               ) : (
                 <div class={input.emptyClass}>
-                  <Mark class="w-14 opacity-10" />
                   <div class="text-14-regular text-text-weak max-w-56">{language.t(reviewEmptyKey())}</div>
                 </div>
               )