export type Locale = "zh" | "en";

export const I18N: Record<Locale, Record<string, string>> = {
	zh: {
		title: "pi-provider-trace",
		live: "实时",
		offline: "离线",
		traceOn: "抓包 开",
		traceOff: "抓包 关",
		sessions: "Pi 会话",
		exchanges: "HTTP 交换",
		newestFirst: "最新在上",
		autoFollow: "自动跟随最新",
		filterPlaceholder: "过滤 URL / id",
		pause: "暂停",
		resume: "继续",
		clear: "清空视图",
		tabStream: "流式 SSE",
		tabReqHeaders: "请求头",
		tabRequestBody: "请求体",
		tabResponse: "响应头",
		tabRaw: "原始行",
		tabTimeline: "时间线",
		timelinePi: "Pi 事件",
		timelineSession: "会话/树/压缩",
		providerLabel: "供应商",
		timelineHttp: "HTTP",
		emptyTimeline: "暂无时间线条目",
		showSseInTimeline: "SSE / 合并流",
		mergeSseDelta: "合并 delta SSE",
		timelineSseMergedLabel: "SSE 合并",
		timelineSseMerged: "{lines} 行 · {chars} 字符",
		reqSectionParams: "参数",
		reqSectionMessages: "消息",
		reqSectionTools: "工具",
		reqSectionRaw: "其它字段",
		reqTabInput: "input",
		reqTabJson: "完整 JSON",
		reqTabPlain: "原文",
		reqToolSchema: "参数 schema",
		reqToolNoSchema: "无 schema",
		reqToolNone: "无工具定义",
		copyCode: "复制",
		copiedCode: "已复制",
		copyFailed: "复制失败",
		emptyWait: "执行 /trace on 后发起对话，或选择左侧会话",
		emptySelectExchange: "选择一条 HTTP 交换",
		emptyNoSessions: "暂无会话记录",
		emptyNoExchanges: "该会话尚无交换",
		emptyNoSse: "尚无 SSE 数据",
		emptyNoResponse: "尚无响应元数据",
		emptyCleared: "已清空视图（磁盘 JSONL 保留）",
		assembledTitle: "拼接文本（delta 累积）",
		parseEvents: "解析事件",
		linesChars: "{lines} 行 · {chars} 字符",
		stats: "{exchanges} 交换 · {sse} SSE · {pi} Pi",
		lang: "语言",
		themeLabel: "主题",
		themeSystem: "跟随系统",
		themeLight: "浅色",
		themeDark: "深色",
		noBody: "无 body",
		noHeaders: "无请求头",
		noUrl: "无 URL",
		emptyNoRequest: "尚无请求元数据",
		sessionUnsaved: "未保存会话",
		downloadTrace: "下载",
		deleteTrace: "删除",
		deleteConfirm: "删除该会话全部轨迹文件？不可恢复",
		bytes: "{n} B",
		records: "{n} 条",
		tabOverview: "Trace 总览",
		overviewTitle: "本会话用量",
		overviewLead: "{gens} 次 HTTP 模型请求，合计 {tokens} tokens（{records} 条轨迹含 SSE/Pi 事件）。",
		overviewHintCost: "累计费用（有定价时）",
		overviewHintLatency: "平均往返耗时",
		overviewHintGens: "HTTP 交换次数",
		overviewErrors: "{n} 次错误",
		overviewCache: "缓存命中约 {pct}",
		overviewDetailsTitle: "明细",
		scoreAvg: "评分均值",
		colLatency: "延迟",
		colTtft: "首 token",
		colTps: "tokens/s",
		colGenerations: "调用次数",
		colSpans: "Spans",
		colErrors: "错误",
		emptyNoMetrics: "无指标数据",
		emptySelectSession: "选择左侧 Pi 会话",
		scoreName: "评分名",
		scoreValue: "分值",
		scoreAdd: "添加评分",
		tabUsage: "用量/成本",
		usageTitle: "LLM 用量汇总",
		usageSession: "本会话累计",
		usageExchange: "本交换",
		colInput: "输入",
		colOutput: "输出",
		colCacheRead: "缓存读",
		colCacheWrite: "缓存写",
		colCacheRate: "缓存命中率",
		colCost: "成本",
		colTotal: "合计 tokens",
		tabGenerations: "模型调用明细",
		colHttp: "请求",
		mediaTitle: "媒体",
		apiError: "接口错误",
		cmdTraceDesc: "Provider HTTP/SSE 抓包：on | off | ui | path | port",
		cmdTraceSubOn: "开启抓包并启动 Web UI（不自动打开浏览器）",
		cmdTraceSubOff: "关闭抓包",
		cmdTraceSubUi: "启动 Web UI（不自动打开浏览器）",
		cmdTraceSubPath: "日志根目录",
		cmdTraceSubPort: "查看或设置 UI 端口",
		cmdTracePortItem: "UI 端口",
		cmdTraceEnabled: "provider trace {status}",
		cmdTraceDisabled: "provider trace 已关闭",
		cmdTraceUiLine: "UI {url}",
		cmdTraceUiNotify: "trace UI: {url}",
		cmdTracePortShow: "当前 UI 端口：{port}\n未单独配置时默认：{defaultPort}\n\n设置：/trace port <1024-65535>\n环境变量：PI_PROVIDER_TRACE_UI_PORT\n配置文件：~/.pi/provider-trace/ui-config.json",
		cmdTracePortInvalid: "无效端口",
		cmdTracePortSet: "UI 端口已设为 {port}，下次 /trace on 或 /trace ui 生效",
		cmdTraceStatusHelp: "trace: {status}\n/trace on | ui | off | path | port",
		flagTraceDesc: "启动时等同 /trace on（抓包 + Web UI，不自动开浏览器）",
		cmdTraceUiStartFailed: "无法启动 Trace Web UI：{message}",
		cmdTracePortInUse: "端口 {port} 已被占用。请 /trace port <端口>，或设置 PI_PROVIDER_TRACE_UI_PORT，或编辑 ~/.pi/provider-trace/ui-config.json",
		cmdTraceStatusOn: "ON → {dir}/sessions/…{ui}",
		cmdTraceStatusOff: "OFF",
		cmdTraceStatusUiSuffix: " | UI {url}",
	},
	en: {
		title: "pi-provider-trace",
		live: "live",
		offline: "offline",
		traceOn: "trace ON",
		traceOff: "trace OFF",
		sessions: "Pi sessions",
		exchanges: "HTTP exchanges",
		newestFirst: "newest first",
		autoFollow: "Follow latest",
		filterPlaceholder: "Filter URL / id",
		pause: "Pause",
		resume: "Resume",
		clear: "Clear view",
		tabStream: "Stream SSE",
		tabReqHeaders: "Req headers",
		tabRequestBody: "Req body",
		tabResponse: "Response",
		tabRaw: "Raw lines",
		tabTimeline: "Timeline",
		timelinePi: "Pi",
		timelineSession: "Session/tree/compact",
		providerLabel: "Provider",
		timelineHttp: "HTTP",
		emptyTimeline: "No timeline entries",
		showSseInTimeline: "SSE / merged stream",
		mergeSseDelta: "Merge delta SSE",
		timelineSseMergedLabel: "SSE merged",
		timelineSseMerged: "{lines} lines · {chars} chars",
		reqSectionParams: "Parameters",
		reqSectionMessages: "Messages",
		reqSectionTools: "Tools",
		reqSectionRaw: "Other fields",
		reqTabInput: "input",
		reqTabJson: "Full JSON",
		reqTabPlain: "Plain",
		reqToolSchema: "Parameter schema",
		reqToolNoSchema: "No schema",
		reqToolNone: "No tools",
		copyCode: "Copy",
		copiedCode: "Copied",
		copyFailed: "Failed",
		emptyWait: "Run /trace on and chat, or pick a session",
		emptySelectExchange: "Select an HTTP exchange",
		emptyNoSessions: "No sessions yet",
		emptyNoExchanges: "No exchanges in this session",
		emptyNoSse: "No SSE data yet",
		emptyNoResponse: "No response metadata",
		emptyCleared: "View cleared (JSONL on disk kept)",
		assembledTitle: "Assembled text (delta accumulation)",
		parseEvents: "Parse events",
		linesChars: "{lines} lines · {chars} chars",
		stats: "{exchanges} exchanges · {sse} SSE · {pi} Pi",
		lang: "Language",
		themeLabel: "Theme",
		themeSystem: "System",
		themeLight: "Light",
		themeDark: "Dark",
		noBody: "no body",
		noHeaders: "no headers",
		noUrl: "no URL",
		emptyNoRequest: "No request metadata yet",
		sessionUnsaved: "unsaved session",
		downloadTrace: "Download",
		deleteTrace: "Delete",
		deleteConfirm: "Delete all trace files for this session? Cannot undo.",
		bytes: "{n} B",
		records: "{n} records",
		tabOverview: "Trace overview",
		overviewTitle: "This session",
		overviewLead: "{gens} HTTP model request(s), {tokens} tokens total ({records} trace lines incl. SSE/Pi events).",
		overviewHintCost: "Estimated cost when priced",
		overviewHintLatency: "Average round-trip time",
		overviewHintGens: "HTTP exchanges",
		overviewErrors: "{n} errors",
		overviewCache: "Cache hit ~{pct}",
		overviewDetailsTitle: "Details",
		scoreAvg: "Avg score",
		colLatency: "Latency",
		colTtft: "TTFT",
		colTps: "tokens/s",
		colGenerations: "Generations",
		colSpans: "Spans",
		colErrors: "Errors",
		emptyNoMetrics: "No metrics yet",
		emptySelectSession: "Select a Pi session",
		scoreName: "Score name",
		scoreValue: "Value",
		scoreAdd: "Add score",
		tabUsage: "Usage & cost",
		usageTitle: "LLM usage",
		usageSession: "Session total",
		usageExchange: "This exchange",
		colInput: "Input",
		colOutput: "Output",
		colCacheRead: "Cache read",
		colCacheWrite: "Cache write",
		colCacheRate: "Cache hit rate",
		colCost: "Cost",
		colTotal: "Total tokens",
		tabGenerations: "Generations",
		colHttp: "Request",
		mediaTitle: "Media",
		apiError: "API error",
		cmdTraceDesc: "Provider HTTP/SSE trace: on | off | ui | path | port",
		cmdTraceSubOn: "Enable capture and start Web UI (does not open browser)",
		cmdTraceSubOff: "Disable capture",
		cmdTraceSubUi: "Start Web UI (does not open browser)",
		cmdTraceSubPath: "Log root directory",
		cmdTraceSubPort: "Show or set UI port",
		cmdTracePortItem: "UI port",
		cmdTraceEnabled: "provider trace {status}",
		cmdTraceDisabled: "provider trace OFF",
		cmdTraceUiLine: "UI {url}",
		cmdTraceUiNotify: "trace UI: {url}",
		cmdTracePortShow: "Current UI port: {port}\nDefault when unset: {defaultPort}\n\nSet: /trace port <1024-65535>\nEnv: PI_PROVIDER_TRACE_UI_PORT\nFile: ~/.pi/provider-trace/ui-config.json",
		cmdTracePortInvalid: "Invalid port",
		cmdTracePortSet: "UI port set to {port}; applies on next /trace on or /trace ui",
		cmdTraceStatusHelp: "trace: {status}\n/trace on | ui | off | path | port",
		flagTraceDesc: "On startup, same as /trace on (capture + Web UI, no auto browser)",
		cmdTraceUiStartFailed: "Failed to start Trace Web UI: {message}",
		cmdTracePortInUse: "Port {port} is in use. Try /trace port <port>, PI_PROVIDER_TRACE_UI_PORT, or ~/.pi/provider-trace/ui-config.json",
		cmdTraceStatusOn: "ON → {dir}/sessions/…{ui}",
		cmdTraceStatusOff: "OFF",
		cmdTraceStatusUiSuffix: " | UI {url}",
	},
};

export function t(locale: Locale, key: string, vars?: Record<string, string | number>): string {
	let s = I18N[locale][key] ?? I18N.en[key] ?? key;
	if (vars) {
		for (const [k, v] of Object.entries(vars)) {
			s = s.replace(`{${k}}`, String(v));
		}
	}
	return s;
}