/**
 * 对照 docs/松江农民土地退补系统字段名称.xlsx 补齐 DMS 缺口（2026-09-04）
 *
 * 缺口结论：
 * 1. 人员表缺独立「死亡状态」字段 c_death_status（原仅靠 c_biz_status=FUNERAL / c_death_date）
 * 2. 人员表 c_supplement_start_month 别名损坏（补发��始年月）→ 修成「补发开始年月」
 *
 * 用法：node migrate-excel-field-gaps-20260904.js
 */
const http = require("http");
const qs = require("querystring");
const fs = require("fs");
const path = require("path");

const HOST = "121.43.55.7";
const PORT = 2101;
const PERSONNEL_MODEL = 1970;

function post(urlPath, fields, token) {
  return new Promise((resolve, reject) => {
    const body = qs.stringify(fields || {});
    const headers = {
      "Content-Type": "application/x-www-form-urlencoded",
      "Content-Length": Buffer.byteLength(body),
    };
    if (token) {
      headers.Token = token;
      headers.token = token;
    }
    const req = http.request(
      { hostname: HOST, port: PORT, path: urlPath, method: "POST", headers },
      (res) => {
        let data = "";
        res.on("data", (c) => (data += c));
        res.on("end", () => {
          try {
            resolve(JSON.parse(data));
          } catch (e) {
            resolve({ raw: data, status: res.statusCode });
          }
        });
      }
    );
    req.on("error", reject);
    req.write(body);
    req.end();
  });
}

function text(shortName, alias, must, seq) {
  return {
    alias,
    customType: "",
    describe: "格式为富文本",
    frontType: "content",
    id: 2,
    must: !!must,
    name: "c_" + shortName,
    searchType: "2",
    sequence: seq || 1,
    showParam: "name,alias,desc,type,front_type,must,default_value",
    type: "text",
  };
}

function normalizeFieldList(raw) {
  let fl = raw;
  if (typeof fl === "string") fl = JSON.parse(fl);
  const out = {};
  Object.keys(fl || {}).forEach((k) => {
    let v = fl[k];
    if (typeof v === "string") v = JSON.parse(v);
    out[k] = v;
  });
  return out;
}

async function getModel(token, modelId) {
  const res = await post("/proxy_dms/model/getModelById", { modelId: String(modelId) }, token);
  if (res.code != 200) throw new Error("getModel " + modelId + " fail: " + JSON.stringify(res));
  return res.content;
}

async function applyUpdates(token, modelId, addMap, renameAliasMap) {
  const model = await getModel(token, modelId);
  const fieldList = normalizeFieldList(model.fieldList);
  if (Object.keys(fieldList).length < 2) {
    throw new Error("model " + modelId + " fieldList 异常，拒绝覆盖");
  }
  const addfieldList = {};

  Object.keys(addMap || {}).forEach((shortName) => {
    const full = "c_" + shortName;
    if (fieldList[full]) return;
    const p = addMap[shortName];
    p.name = full;
    fieldList[full] = p;
    addfieldList[shortName] = {
      alias: p.alias,
      type: p.type,
      frontType: p.frontType,
      must: p.must,
      name: shortName,
      describe: p.describe,
      searchType: p.searchType,
      sortType: p.sortType,
      sequence: p.sequence,
      showParam: p.showParam,
      customType: p.customType || "",
      id: p.id,
    };
  });

  // 仅改 alias：只更新 fieldList 元数据，勿走 updatefieldList（生产 DMS 对 rename 会 500）
  const aliasFixed = [];
  Object.keys(renameAliasMap || {}).forEach((full) => {
    if (!fieldList[full]) return;
    const nextAlias = renameAliasMap[full];
    if (fieldList[full].alias === nextAlias) return;
    fieldList[full] = Object.assign({}, fieldList[full], { alias: nextAlias });
    aliasFixed.push(full);
  });

  if (Object.keys(addfieldList).length === 0 && aliasFixed.length === 0) {
    return {
      modelId,
      modelName: model.modelName,
      code: 200,
      message: "无需变更",
      added: [],
      updated: [],
    };
  }

  const res = await post(
    "/proxy_dms/model/updateFieldList",
    {
      modelId: String(modelId),
      fieldList: JSON.stringify(fieldList),
      addfieldList: JSON.stringify(addfieldList),
      delfieldList: JSON.stringify({}),
      updatefieldList: JSON.stringify({}),
    },
    token
  );
  const verify = await getModel(token, modelId);
  const vfl = normalizeFieldList(verify.fieldList);
  return {
    modelId,
    modelName: model.modelName,
    code: res.code,
    message: res.message || res.content,
    added: Object.keys(addfieldList),
    updated: aliasFixed,
    deathStatus: vfl.c_death_status || null,
    supplementAlias: vfl.c_supplement_start_month ? vfl.c_supplement_start_month.alias : null,
  };
}

async function main() {
  const login = await post("/proxy_oauth/user/login", {
    userName: "user_liu",
    password: "WE176852439@lmx",
    clientId: "1",
  });
  const token = login.message;
  if (!token) throw new Error("login failed: " + JSON.stringify(login));

  const result = await applyUpdates(
    token,
    PERSONNEL_MODEL,
    {
      // 大数据死亡状态匹配专用；与业务态 c_biz_status=FUNERAL 并存
      death_status: text("death_status", "死亡状态", false, 40),
    },
    {
      // 仅修复损坏别名；其余 Excel 名与现有 alias 语义等价，不强制改名以免影响管理端展示习惯
      c_supplement_start_month: "补发开始年月",
    }
  );

  const outPath = path.join(
    __dirname,
    "../../docs/_migrate_excel_field_gaps_20260904.json"
  );
  fs.writeFileSync(outPath, JSON.stringify(result, null, 2), "utf8");
  console.log(JSON.stringify(result, null, 2));
}

main().catch((e) => {
  console.error(e);
  process.exit(1);
});