/**
* Copyright (C) 2024 Delia Contributors
* GPL-3.0-or-later
*/
import { NextResponse } from "next/server"
import { readFile } from "fs/promises"
import { getEnhancedStatsFile } from "@/lib/paths"
interface ToolStats {
calls: number
errors: number
avg_ms: number
total_ms: number
}
interface RecentToolCall {
ts: string
tool: string
ms: number
success: boolean
error?: string
}
export async function GET() {
try {
const statsFile = getEnhancedStatsFile()
const data = await readFile(statsFile, "utf-8")
const stats = JSON.parse(data)
const toolStats: Record<string, ToolStats> = stats.tool_stats || {}
const recentCalls: RecentToolCall[] = stats.recent_tool_calls || []
// Sort tools by call count descending
const sortedTools = Object.entries(toolStats)
.sort((a, b) => b[1].calls - a[1].calls)
.map(([name, stats]) => ({ name, ...stats }))
// Calculate summary
const totalCalls = Object.values(toolStats).reduce((sum, t) => sum + t.calls, 0)
const totalErrors = Object.values(toolStats).reduce((sum, t) => sum + t.errors, 0)
const uniqueTools = Object.keys(toolStats).length
return NextResponse.json({
success: true,
tools: sortedTools,
recent: recentCalls.slice(-50).reverse(), // Last 50, newest first
summary: {
total_calls: totalCalls,
total_errors: totalErrors,
unique_tools: uniqueTools,
error_rate: totalCalls > 0 ? (totalErrors / totalCalls * 100).toFixed(2) + "%" : "0%",
},
timestamp: new Date().toISOString(),
})
} catch (error) {
if ((error as NodeJS.ErrnoException).code === "ENOENT") {
return NextResponse.json({
success: true,
tools: [],
recent: [],
summary: { total_calls: 0, total_errors: 0, unique_tools: 0, error_rate: "0%" },
})
}
return NextResponse.json({ success: false, error: "Failed to read tool stats" }, { status: 500 })
}
}
