refactor(snapshot): store unified patches in file diffs (#21244)

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

packages/app/src/pages/session.tsx

@@ -1,4 +1,4 @@
-import type { FileDiff, Project, UserMessage } from "@opencode-ai/sdk/v2"
+import type { Project, UserMessage, VcsFileDiff } from "@opencode-ai/sdk/v2"
 import { useDialog } from "@opencode-ai/ui/context/dialog"
 import { useMutation } from "@tanstack/solid-query"
 import {
@@ -68,7 +68,7 @@ type FollowupItem = FollowupDraft & { id: string }
 type FollowupEdit = Pick<FollowupItem, "id" | "prompt" | "context">
 const emptyFollowups: FollowupItem[] = []
 
-type ChangeMode = "git" | "branch" | "session" | "turn"
+type ChangeMode = "git" | "branch" | "turn"
 type VcsMode = "git" | "branch"
 
 type SessionHistoryWindowInput = {
@@ -463,13 +463,6 @@ export default function Page() {
     if (!id) return false
     return sync.session.history.loading(id)
   })
-  const diffsReady = createMemo(() => {
-    const id = params.id
-    if (!id) return true
-    if (!hasSessionReview()) return true
-    return sync.data.session_diff[id] !== undefined
-  })
-
   const userMessages = createMemo(
     () => messages().filter((m) => m.role === "user") as UserMessage[],
     emptyUserMessages,
@@ -527,10 +520,19 @@ export default function Page() {
     deferRender: false,
   })
 
-  const [vcs, setVcs] = createStore({
+  const [vcs, setVcs] = createStore<{
     diff: {
-      git: [] as FileDiff[],
-      branch: [] as FileDiff[],
+      git: VcsFileDiff[]
+      branch: VcsFileDiff[]
+    }
+    ready: {
+      git: boolean
+      branch: boolean
+    }
+  }>({
+    diff: {
+      git: [] as VcsFileDiff[],
+      branch: [] as VcsFileDiff[],
     },
     ready: {
       git: false,
@@ -648,6 +650,7 @@ export default function Page() {
   }, desktopReviewOpen())
 
   const turnDiffs = createMemo(() => lastUserMessage()?.summary?.diffs ?? [])
+  const nogit = createMemo(() => !!sync.project && sync.project.vcs !== "git")
   const changesOptions = createMemo<ChangeMode[]>(() => {
     const list: ChangeMode[] = []
     if (sync.project?.vcs === "git") list.push("git")
@@ -659,7 +662,7 @@ export default function Page() {
     ) {
       list.push("branch")
     }
-    list.push("session", "turn")
+    list.push("turn")
     return list
   })
   const vcsMode = createMemo<VcsMode | undefined>(() => {
@@ -668,20 +671,17 @@ export default function Page() {
   const reviewDiffs = createMemo(() => {
     if (store.changes === "git") return vcs.diff.git
     if (store.changes === "branch") return vcs.diff.branch
-    if (store.changes === "session") return diffs()
     return turnDiffs()
   })
   const reviewCount = createMemo(() => {
     if (store.changes === "git") return vcs.diff.git.length
     if (store.changes === "branch") return vcs.diff.branch.length
-    if (store.changes === "session") return sessionCount()
     return turnDiffs().length
   })
   const hasReview = createMemo(() => reviewCount() > 0)
   const reviewReady = createMemo(() => {
     if (store.changes === "git") return vcs.ready.git
     if (store.changes === "branch") return vcs.ready.branch
-    if (store.changes === "session") return !hasSessionReview() || diffsReady()
     return true
   })
 
@@ -749,13 +749,6 @@ export default function Page() {
     scrollToMessage(msgs[targetIndex], "auto")
   }
 
-  const sessionEmptyKey = createMemo(() => {
-    const project = sync.project
-    if (project && !project.vcs) return "session.review.noVcs"
-    if (sync.data.config.snapshot === false) return "session.review.noSnapshot"
-    return "session.review.empty"
-  })
-
   function upsert(next: Project) {
     const list = globalSync.data.project
     sync.set("project", next.id)
@@ -1156,7 +1149,6 @@ export default function Page() {
     const label = (option: ChangeMode) => {
       if (option === "git") return language.t("ui.sessionReview.title.git")
       if (option === "branch") return language.t("ui.sessionReview.title.branch")
-      if (option === "session") return language.t("ui.sessionReview.title")
       return language.t("ui.sessionReview.title.lastTurn")
     }
 
@@ -1179,11 +1171,26 @@ export default function Page() {
     </div>
   )
 
+  const createGit = (input: { emptyClass: string }) => (
+    <div class={input.emptyClass}>
+      <div class="flex flex-col gap-3">
+        <div class="text-14-medium text-text-strong">{language.t("session.review.noVcs.createGit.title")}</div>
+        <div class="text-14-regular text-text-base max-w-md" style={{ "line-height": "var(--line-height-normal)" }}>
+          {language.t("session.review.noVcs.createGit.description")}
+        </div>
+      </div>
+      <Button size="large" disabled={gitMutation.isPending} onClick={initGit}>
+        {gitMutation.isPending
+          ? language.t("session.review.noVcs.createGit.actionLoading")
+          : language.t("session.review.noVcs.createGit.action")}
+      </Button>
+    </div>
+  )
+
   const reviewEmptyText = createMemo(() => {
     if (store.changes === "git") return language.t("session.review.noUncommittedChanges")
     if (store.changes === "branch") return language.t("session.review.noBranchChanges")
-    if (store.changes === "turn") return language.t("session.review.noChanges")
-    return language.t(sessionEmptyKey())
+    return language.t("session.review.noChanges")
   })
 
   const reviewEmpty = (input: { loadingClass: string; emptyClass: string }) => {
@@ -1193,31 +1200,10 @@ export default function Page() {
     }
 
     if (store.changes === "turn") {
+      if (nogit()) return createGit(input)
       return empty(reviewEmptyText())
     }
 
-    if (hasSessionReview() && !diffsReady()) {
-      return <div class={input.loadingClass}>{language.t("session.review.loadingChanges")}</div>
-    }
-
-    if (sessionEmptyKey() === "session.review.noVcs") {
-      return (
-        <div class={input.emptyClass}>
-          <div class="flex flex-col gap-3">
-            <div class="text-14-medium text-text-strong">{language.t("session.review.noVcs.createGit.title")}</div>
-            <div class="text-14-regular text-text-base max-w-md" style={{ "line-height": "var(--line-height-normal)" }}>
-              {language.t("session.review.noVcs.createGit.description")}
-            </div>
-          </div>
-          <Button size="large" disabled={gitMutation.isPending} onClick={initGit}>
-            {gitMutation.isPending
-              ? language.t("session.review.noVcs.createGit.actionLoading")
-              : language.t("session.review.noVcs.createGit.action")}
-          </Button>
-        </div>
-      )
-    }
-
     return (
       <div class={input.emptyClass}>
         <div class="text-14-regular text-text-weak max-w-56">{reviewEmptyText()}</div>