chore: refactoring and tests (#12468)

packages/app/src/components/session-context-usage.tsx

@@ -3,12 +3,11 @@ import { Tooltip } from "@opencode-ai/ui/tooltip"
 import { ProgressCircle } from "@opencode-ai/ui/progress-circle"
 import { Button } from "@opencode-ai/ui/button"
 import { useParams } from "@solidjs/router"
-import { AssistantMessage } from "@opencode-ai/sdk/v2/client"
-import { findLast } from "@opencode-ai/util/array"
 
 import { useLayout } from "@/context/layout"
 import { useSync } from "@/context/sync"
 import { useLanguage } from "@/context/language"
+import { getSessionContextMetrics } from "@/components/session/session-context-metrics"
 
 interface SessionContextUsageProps {
   variant?: "button" | "indicator"
@@ -34,26 +33,10 @@ export function SessionContextUsage(props: SessionContextUsageProps) {
       }),
   )
 
+  const metrics = createMemo(() => getSessionContextMetrics(messages(), sync.data.provider.all))
+  const context = createMemo(() => metrics().context)
   const cost = createMemo(() => {
-    const total = messages().reduce((sum, x) => sum + (x.role === "assistant" ? x.cost : 0), 0)
-    return usd().format(total)
-  })
-
-  const context = createMemo(() => {
-    const locale = language.locale()
-    const last = findLast(messages(), (x) => {
-      if (x.role !== "assistant") return false
-      const total = x.tokens.input + x.tokens.output + x.tokens.reasoning + x.tokens.cache.read + x.tokens.cache.write
-      return total > 0
-    }) as AssistantMessage
-    if (!last) return
-    const total =
-      last.tokens.input + last.tokens.output + last.tokens.reasoning + last.tokens.cache.read + last.tokens.cache.write
-    const model = sync.data.provider.all.find((x) => x.id === last.providerID)?.models[last.modelID]
-    return {
-      tokens: total.toLocaleString(locale),
-      percentage: model?.limit.context ? Math.round((total / model.limit.context) * 100) : null,
-    }
+    return usd().format(metrics().totalCost)
   })
 
   const openContext = () => {
@@ -67,7 +50,7 @@ export function SessionContextUsage(props: SessionContextUsageProps) {
 
   const circle = () => (
     <div class="flex items-center justify-center">
-      <ProgressCircle size={16} strokeWidth={2} percentage={context()?.percentage ?? 0} />
+      <ProgressCircle size={16} strokeWidth={2} percentage={context()?.usage ?? 0} />
     </div>
   )
 
@@ -77,11 +60,11 @@ export function SessionContextUsage(props: SessionContextUsageProps) {
         {(ctx) => (
           <>
             <div class="flex items-center gap-2">
-              <span class="text-text-invert-strong">{ctx().tokens}</span>
+              <span class="text-text-invert-strong">{ctx().total.toLocaleString(language.locale())}</span>
               <span class="text-text-invert-base">{language.t("context.usage.tokens")}</span>
             </div>
             <div class="flex items-center gap-2">
-              <span class="text-text-invert-strong">{ctx().percentage ?? 0}%</span>
+              <span class="text-text-invert-strong">{ctx().usage ?? 0}%</span>
               <span class="text-text-invert-base">{language.t("context.usage.usage")}</span>
             </div>
           </>