export type Locale = "zh-CN" | "en-US"; type MessageParams = Record; const DEFAULT_LOCALE: Locale = "zh-CN"; export const LOCALE_STORAGE_KEY = "polyweather.locale"; const MESSAGES: Record> = { "zh-CN": { "header.subtitle": "天气衍生品智能分析", "header.info": "技术说明", "header.infoAria": "查看系统技术说明", "header.live": "实时", "header.refreshAria": "刷新所有数据", "header.langAria": "切换语言", "header.langZh": "中文", "header.langEn": "EN", "sidebar.title": "监控城市", "sidebar.peakAt": "峰值 @ {time}", "dashboard.loading": "正在获取气象数据，请稍候...", "detail.closeAria": "关闭城市详情面板", "detail.waitSelect": "等待选择城市", "detail.todayAnalysis": "今日日内分析", "detail.history": "历史对账", "detail.loading": "正在加载城市详情...", "detail.emptyHint": "从左侧城市列表选择一个城市查看详情。", "detail.sceneryAlt": "{city} 风景照", "detail.sceneryTitle": "城市风景与微气候", "detail.sceneryFallback": "当前没有匹配到风景图，可从下方城市档案查看站点与观测结构。", "detail.profile": "城市档案", "detail.todayMiniTrend": "今日日内走势（简版）", "detail.chartLegendEmpty": "暂无小时级实测或预测曲线。", "forecast.title": "多日预报", "forecast.empty": "暂无多日预报", "forecast.today": "今天", "guide.title": "📎 PolyWeather 系统技术说明", "guide.closeAria": "关闭技术说明", "guide.footer": "数据源以 Aviation Weather / METAR、Turkish MGM、Open-Meteo、weather.gov 为主，部分城市补充 Meteoblue。", "history.title": "📊 历史准确率对账 - {city}", "history.closeAria": "关闭历史对账", "history.loading": "正在获取历史数据...", "history.error": "获取历史信息失败", "history.empty": "近 15 天暂无该城市历史数据", "history.hitRate": "DEB 结算胜率 (WU)", "history.mae": "DEB MAE", "history.sample": "近 15 天已结算样本", "history.sampleDays": "{count} 天", "future.todayTitle": "{city} · 今日日内分析", "future.dateTitle": "{city} · {date} 未来日期分析", "future.closeTodayAria": "关闭今日日内分析", "future.closeDateAria": "关闭未来日期分析", "future.currentObs": "当前实测", "future.currentWeather": "当前天气", "future.wuRef": "WU 结算参考", "future.sunrise": "日出时间", "future.sunset": "日落时间", "future.sunshine": "日照时长", "future.todayForecastHigh": "今日预报高温", "future.targetForecast": "目标日预报", "future.deb": "DEB 预测", "future.mu": "动态分布中心", "future.score": "趋势评分", "future.todayTempTrend": "今日温度走势", "future.targetTempTrend": "目标日小时走势", "future.probability": "模型结算概率分布", "future.models": "多模型预报", "future.structureToday": "今日日内结构信号", "future.structureDate": "未来 6-48 小时趋势", "future.judgement": "判断", "future.confidence": "置信度", "future.maxPrecip": "最大降水概率", "future.ai": "AI 深度分析", "future.noAi": "暂无 AI 分析，当前以结构化气象与模型数据为主。", "future.weatherGov": "weather.gov 文本", "future.risk": "结算与偏差风险", "future.climate": "当地气候主要受什么影响", "future.chartLegendEmpty": "暂无机场报文或小时级实测数据", "confidence.high": "高", "confidence.medium": "中", "confidence.low": "低", "section.todayTempTrend": "今日温度走势", "section.chartEmpty": "暂无小时级数据", "section.probability": "模型结算概率分布", "section.mu": "动态分布中心 μ = {value}{unit}", "section.noProb": "暂无概率数据", "section.models": "多模型预报", "section.noModels": "暂无多模型预报", "section.ai": "AI 深度分析", "section.aiEmpty": "暂无 AI 分析，当前以结构化气象与模型数据为主。", "section.risk": "数据偏差风险", "section.noRiskProfile": "暂无风险档案", "section.airport": "机场", "section.distance": "距离", "section.note": "注意", "common.na": "--", }, "en-US": { "header.subtitle": "Weather Derivatives Intelligence", "header.info": "Tech Notes", "header.infoAria": "Open system technical notes", "header.live": "LIVE", "header.refreshAria": "Refresh all data", "header.langAria": "Switch language", "header.langZh": "中文", "header.langEn": "EN", "sidebar.title": "Monitored Cities", "sidebar.peakAt": "Peak @ {time}", "dashboard.loading": "Loading weather data, please wait...", "detail.closeAria": "Close city detail panel", "detail.waitSelect": "Waiting for city selection", "detail.todayAnalysis": "Today's Intraday", "detail.history": "History Reconciliation", "detail.loading": "Loading city details...", "detail.emptyHint": "Select a city from the left list to view details.", "detail.sceneryAlt": "{city} scenery", "detail.sceneryTitle": "City Scenery & Microclimate", "detail.sceneryFallback": "No scenery image matched. You can still review station and observation profile below.", "detail.profile": "City Profile", "detail.todayMiniTrend": "Today's Intraday Trend (Compact)", "detail.chartLegendEmpty": "No hourly observations or forecast curve available.", "forecast.title": "Multi-day Forecast", "forecast.empty": "No multi-day forecast available", "forecast.today": "Today", "guide.title": "📎 PolyWeather Technical Overview", "guide.closeAria": "Close technical overview", "guide.footer": "Primary data sources are Aviation Weather / METAR, Turkish MGM, Open-Meteo, and weather.gov, with Meteoblue added for selected cities.", "history.title": "📊 Historical Reconciliation - {city}", "history.closeAria": "Close history reconciliation", "history.loading": "Loading historical data...", "history.error": "Failed to load historical data", "history.empty": "No historical records for this city in the last 15 days", "history.hitRate": "DEB Settlement Hit Rate (WU)", "history.mae": "DEB MAE", "history.sample": "Settled Samples (Last 15 Days)", "history.sampleDays": "{count} days", "future.todayTitle": "{city} · Intraday Analysis", "future.dateTitle": "{city} · {date} Future-date Analysis", "future.closeTodayAria": "Close intraday analysis", "future.closeDateAria": "Close future-date analysis", "future.currentObs": "Current Observation", "future.currentWeather": "Current Weather", "future.wuRef": "WU Settlement Ref", "future.sunrise": "Sunrise", "future.sunset": "Sunset", "future.sunshine": "Sunshine Duration", "future.todayForecastHigh": "Today's Forecast High", "future.targetForecast": "Target-day Forecast", "future.deb": "DEB Forecast", "future.mu": "Dynamic Distribution Center", "future.score": "Trend Score", "future.todayTempTrend": "Today's Temperature Trend", "future.targetTempTrend": "Target-day Hourly Trend", "future.probability": "Model Settlement Probabilities", "future.models": "Multi-model Forecast", "future.structureToday": "Intraday Structural Signal", "future.structureDate": "6-48h Structural Trend", "future.judgement": "Judgement", "future.confidence": "Confidence", "future.maxPrecip": "Max Precip Probability", "future.ai": "AI Deep Analysis", "future.noAi": "No AI analysis available. Structured meteorological and model data are used as baseline.", "future.weatherGov": "weather.gov text", "future.risk": "Settlement & Deviation Risk", "future.climate": "What Mainly Drives Local Climate", "future.chartLegendEmpty": "No METAR bulletin or hourly observations available", "confidence.high": "High", "confidence.medium": "Medium", "confidence.low": "Low", "section.todayTempTrend": "Today's Temperature Trend", "section.chartEmpty": "No hourly data available", "section.probability": "Model Settlement Probabilities", "section.mu": "Dynamic center μ = {value}{unit}", "section.noProb": "No probability data available", "section.models": "Multi-model Forecast", "section.noModels": "No multi-model forecast available", "section.ai": "AI Deep Analysis", "section.aiEmpty": "No AI analysis available. Structured meteorological and model data are currently used.", "section.risk": "Data Deviation Risk", "section.noRiskProfile": "No risk profile available", "section.airport": "Airport", "section.distance": "Distance", "section.note": "Note", "common.na": "--", }, }; export function normalizeLocale(value?: string | null): Locale { if (!value) return DEFAULT_LOCALE; const normalized = value.toLowerCase(); if (normalized.startsWith("en")) return "en-US"; return "zh-CN"; } export function getInitialLocaleFromNavigator(): Locale { if (typeof window === "undefined") return DEFAULT_LOCALE; return normalizeLocale(window.navigator.language); } export function formatMessage( locale: Locale, key: string, params?: MessageParams, ): string { const template = MESSAGES[locale]?.[key] || MESSAGES[DEFAULT_LOCALE][key] || key; if (!params) return template; return template.replace(/\{(\w+)\}/g, (_, token) => { const value = params[token]; return value == null ? "" : String(value); }); }