const fs = require("fs");
const path = require("path");

const SRC = path.join(__dirname, "../src");
const OUT = path.join(__dirname, "../src/i18n/flat-en.js");
const SKIP = /copy\.vue$|weatherInfo copy|flat-en\.js|messages\.js/i;
const CHINESE_RE = /[\u4e00-\u9fff][\u4e00-\u9fff\d，。、？！：；""''（）【】\-\s%％·]*/g;

const messagesPath = path.join(__dirname, "../src/i18n/messages.js");
const messages = new Function(`${fs.readFileSync(messagesPath, "utf8").replace("export default", "return ")}`)();

const PHRASES = [
    ["长势报告", "Growth Report"],
    ["农情档案", "Crop Archives"],
    ["农事规划", "Farm Planning"],
    ["有味溯源", "Traceability"],
    ["荔枝长势报告", "Lychee Growth Report"],
    ["作物长势报告", "Crop Growth Report"],
    ["气象风险", "Weather Risks"],
    ["农事建议", "Farming Advice"],
    ["巡园重点", "Patrol Priorities"],
    ["未来7-15天气象风险", "7–15 Day Weather Risks"],
    ["未来七天天气", "7-Day Forecast"],
    ["农场列表", "Farm List"],
    ["示范农场", "Demo Farm"],
    ["专属数字农场，种好卖好", "Your Digital Farm — Grow Better, Sell Better"],
    ["点击解锁一键溯源增产", "Tap to Unlock Traceability & Yield Boost"],
    ["您的农场已绑定成功", "Farm Linked Successfully"],
    ["点击展开更多", "Show More"],
    ["点击收起", "Collapse"],
    ["暂无地址", "No Address"],
    ["干旱预警", "Drought Alert"],
    ["设为默认农场", "Set as Default"],
    ["新增农场", "Add Farm"],
    ["当前农场", "Current Farm"],
    ["农场信息维护", "Farm Profile"],
    ["查看全部农场列表，并可创建农场", "View All Farms and Create New Ones"],
    ["背景描述：", "Background: "],
    ["对策建议：", "Recommendations: "],
    ["点击解锁", "Unlock"],
    ["请求错误", "Bad Request"],
    ["未授权，请登录", "Unauthorized. Please log in"],
    ["没有权限，拒绝访问", "Forbidden"],
    ["请求地址出错", "Invalid URL"],
    ["请求超时", "Request Timeout"],
    ["服务器内部错误", "Internal Server Error"],
    ["服务未实现", "Not Implemented"],
    ["网关错误", "Bad Gateway"],
    ["服务不可用", "Service Unavailable"],
    ["网关超时", "Gateway Timeout"],
    ["HTTP版本不受支持", "HTTP Version Not Supported"],
    ["农事详情", "Farm Work Details"],
    ["农事凭证", "Farm Work Certificate"],
    ["执行区域", "Execution Area"],
    ["已认证", "Verified"],
    ["农事目的", "Purpose"],
    ["注意事项", "Notes"],
    ["药物处方", "Prescription"],
    ["执行方式", "Execution Method"],
    ["异常记录", "Exception Log"],
    ["转发给执行人员", "Forward to Executor"],
    ["确认上传", "Confirm Upload"],
    ["确认信息", "Confirm"],
    ["转发记录", "Forward Record"],
    ["物候不整齐?", "Uneven Phenology?"],
    ["发现异常，拍照记录", "Report Issue with Photo"],
    ["当前现状：", "Current Status:"],
    ["点击上传照片", "Upload Photo"],
    ["点击勾画新发生区域", "Draw New Area"],
    ["暂未到达进程", "Stage Not Reached"],
    ["邀请勾画", "Invite to Draw"],
    ["区域名称", "Area Name"],
    ["物候时间", "Phenology Period"],
    ["多选", "Multi-select"],
    ["调整pH值", "Adjust pH"],
    ["物候期时间设置", "Phenology Schedule"],
    ["起始时间", "Start Time"],
    ["请从上往下按照时间顺序填写日期", "Enter dates in chronological order from top to bottom"],
    ["确认设置", "Confirm"],
    ["上传中", "Uploading"],
    ["上传失败", "Upload Failed"],
    ["上传成功", "Upload Successful"],
    ["加载中", "Loading"],
    ["暂无数据", "No Data"],
    ["请稍候", "Please Wait"],
    ["操作成功", "Success"],
    ["操作失败", "Failed"],
    ["网络错误", "Network Error"],
    ["请求失败", "Request Failed"],
    ["登录", "Log In"],
    ["退出登录", "Log Out"],
    ["确定", "OK"],
    ["取消", "Cancel"],
    ["确认", "Confirm"],
    ["提交", "Submit"],
    ["保存", "Save"],
    ["删除", "Delete"],
    ["编辑", "Edit"],
    ["返回", "Back"],
    ["搜索", "Search"],
    ["搜索农场", "Search Farms"],
    ["选择地区", "Select Region"],
    ["选择品类", "Select Category"],
    ["请选择", "Please Select"],
    ["请输入", "Please Enter"],
    ["展开更多", "Expand"],
    ["收起", "Collapse"],
    ["详情", "Details"],
    ["查看", "View"],
    ["关闭", "Close"],
    ["下一步", "Next"],
    ["上一步", "Previous"],
    ["完成", "Done"],
    ["全部", "All"],
    ["更多", "More"],
    ["首页", "Home"],
    ["个人中心", "Profile"],
    ["农事服务", "Farm Services"],
    ["用户管理", "User Management"],
    ["历史风险报告", "Historical Risk Reports"],
    ["校准物候期", "Calibrate Phenology"],
    ["进程互动", "Progress Check"],
    ["长势互动", "Growth Check"],
    ["病虫互动", "Pest Check"],
    ["病虫风险", "Pest & Disease Risk"],
    ["阴雨寡照风险", "Rain & Low-Light Risk"],
    ["根外追肥", "Foliar Feeding"],
    ["虫害防治", "Pest Control"],
    ["种植档案管理", "Planting Records"],
    ["邀请关注", "Invite to Follow"],
];

const WORDS = {
    请: "Please ",
    选择: "Select ",
    输入: "Enter ",
    暂无: "No ",
    当前: "Current ",
    未来: "Future ",
    查看: "View ",
    点击: "Tap ",
    上传: "Upload ",
    下载: "Download ",
    搜索: "Search ",
    筛选: "Filter ",
    排序: "Sort ",
    新增: "Add ",
    编辑: "Edit ",
    删除: "Delete ",
    保存: "Save ",
    提交: "Submit ",
    确认: "Confirm ",
    取消: "Cancel ",
    返回: "Back ",
    关闭: "Close ",
    展开: "Expand ",
    收起: "Collapse ",
    成功: " Success",
    失败: " Failed",
    错误: " Error",
    警告: " Warning",
    提示: " Notice",
    农场: "Farm",
    果园: "Orchard",
    地块: "Plot",
    品种: "Variety",
    作物: "Crop",
    荔枝: "Lychee",
    水稻: "Rice",
    农事: "Farm Work",
    天气: "Weather",
    风险: " Risk",
    报告: " Report",
    档案: " Archives",
    规划: " Planning",
    溯源: " Traceability",
    互动: " Interaction",
    巡园: "Patrol ",
    物候期: "Phenological Stage",
    生育期: "Reproductive Stage",
    膨果期: "Fruit Expansion Stage",
    晴天: "Sunny",
    周日: "Sun",
    周一: "Mon",
    周二: "Tue",
    周三: "Wed",
    周四: "Thu",
    周五: "Fri",
    周六: "Sat",
};

function pairZhEn(zhTree, enTree, out = {}) {
    Object.keys(zhTree || {}).forEach((k) => {
        if (zhTree[k] && typeof zhTree[k] === "object" && !Array.isArray(zhTree[k])) {
            pairZhEn(zhTree[k], (enTree || {})[k], out);
        } else if (typeof zhTree[k] === "string" && typeof (enTree || {})[k] === "string") {
            out[zhTree[k]] = enTree[k];
        }
    });
    return out;
}

function extractTemplateChinese(filePath) {
    const content = fs.readFileSync(filePath, "utf8");
    const templateMatch = content.match(/<template>([\s\S]*?)<\/template>/);
    if (!templateMatch) return [];
    return (templateMatch[1].match(CHINESE_RE) || [])
        .map((s) => s.trim().replace(/\s+/g, " "))
        .filter((s) => s.length >= 2 && s.length <= 120 && /[\u4e00-\u9fff]/.test(s));
}

function walk(dir, files = []) {
    for (const name of fs.readdirSync(dir)) {
        const p = path.join(dir, name);
        if (fs.statSync(p).isDirectory()) {
            if (name !== "node_modules") walk(p, files);
        } else if (name.endsWith(".vue") && !SKIP.test(p)) files.push(p);
    }
    return files;
}

function autoTranslate(zh, cache) {
    if (cache[zh]) return cache[zh];
    for (const [key, val] of PHRASES) {
        if (zh === key || zh.includes(key)) {
            cache[zh] = zh.split(key).join(val);
            if (cache[zh] !== zh) return cache[zh];
        }
    }
    let result = zh;
    const keys = Object.keys(WORDS).sort((a, b) => b.length - a.length);
    keys.forEach((w) => {
        result = result.split(w).join(WORDS[w]);
    });
    result = result.replace(/\s+/g, " ").trim();
    if (/[\u4e00-\u9fff]/.test(result)) {
        result = `[${result}]`;
    }
    cache[zh] = result;
    return result;
}

const map = pairZhEn(messages.zh, messages.en);
const cache = { ...map };

for (const file of walk(SRC)) {
    extractTemplateChinese(file).forEach((s) => {
        if (!map[s]) map[s] = null;
    });
}

Object.keys(map).forEach((zh) => {
    if (!map[zh] || /[\u4e00-\u9fff]/.test(map[zh])) {
        map[zh] = autoTranslate(zh, cache);
    }
});

const esc = (s) => s.replace(/\\/g, "\\\\").replace(/'/g, "\\'");
const lines = ["export default {"];
Object.keys(map)
    .sort()
    .forEach((zh) => {
        lines.push(`  '${esc(zh)}': '${esc(map[zh])}',`);
    });
lines.push("};");
fs.writeFileSync(OUT, lines.join("\n"));
console.log("Wrote", Object.keys(map).length, "entries");