package com.xly.tool;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.xly.agent.AgentIdentity;
import com.xly.service.ErpClient;
import com.xly.service.FormResolverService;
import com.xly.service.OpService;
import dev.langchain4j.agent.tool.P;
import dev.langchain4j.agent.tool.Tool;
import org.springframework.jdbc.core.JdbcTemplate;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 * ProposeWrite 工具（写操作，人在环）。
 *
 * <p>**只提议并暂存，绝不立即执行**：把「改某条记录的某字段」解析成具体的 表/记录id/列/新值，
 * 写一条 draft 到 ai_op_queue，返回一个提议。真正执行发生在用户点【确认】后的确定性端点里
 * （见 OpController），不经过 LLM。
 */
public class ProposeWriteTool {

    private final ErpClient erp;
    private final JdbcTemplate jdbc;
    private final OpService ops;
    private final ObjectMapper mapper;
    private final AgentIdentity identity;
    private final FormResolverService resolver;

    public ProposeWriteTool(ErpClient erp, JdbcTemplate jdbc, OpService ops, ObjectMapper mapper,
                            AgentIdentity identity, FormResolverService resolver) {
        this.erp = erp;
        this.jdbc = jdbc;
        this.ops = ops;
        this.mapper = mapper;
        this.identity = identity;
        this.resolver = resolver;
    }

    @Tool("提议一次写操作（人在环：只生成待确认提议、绝不立即执行；用户点【确认】才写入，你绝不能声称已完成）。"
            + "用 action 指定动作：create=新增；update=改某字段；invalid=作废（业务单据要“删除/取消”一律用它，可复原）；"
            + "cancelInvalid=复原/取消作废；examine=审核；cancelExamine=销审/反审核；delete=物理删除（明细行/极少用，业务单据别用）。"
            + "按 action 传参：create 用 fieldsJson；update 用 recordKeyword+fieldChinese+newValue；"
            + "invalid/cancelInvalid/examine/cancelExamine/delete 用 recordKeyword 定位单据。本工具自行定位主表，无需先 findForms。")
    public String proposeWrite(
            @P("动作：create|update|invalid|cancelInvalid|examine|cancelExamine|delete") String action,
            @P("实体/单据类型，如 报价 / 客户 / 销售订单") String entityKeyword,
            @P(value = "记录名称或单号关键词（create 不需要）", required = false) String recordKeyword,
            @P(value = "要改的字段中文名（仅 update）", required = false) String fieldChinese,
            @P(value = "新值（仅 update）", required = false) String newValue,
            @P(value = "字段 JSON 中文名->值（仅 create）", required = false) String fieldsJson) {
        if (isBlank(action)) {
            return err("缺少 action。");
        }
        switch (action.trim().toLowerCase()) {
            case "create":        return doCreate(entityKeyword, fieldsJson);
            case "update":        return doUpdate(entityKeyword, recordKeyword, fieldChinese, newValue);
            case "invalid":       return doInvalidate(entityKeyword, recordKeyword, false);
            case "cancelinvalid": return doInvalidate(entityKeyword, recordKeyword, true);
            case "examine":       return doExamineOp(entityKeyword, recordKeyword, 1);
            case "cancelexamine": return doExamineOp(entityKeyword, recordKeyword, 0);
            case "delete":        return doDelete(entityKeyword, recordKeyword);
            default:
                return err("未知 action：" + action + "（支持 create/update/invalid/cancelInvalid/examine/cancelExamine/delete）");
        }
    }

    /** 作废(cancel=false)/复原·取消作废(cancel=true)一条记录 → ERP updatebInvalid（Sp_Invalidation）。业务单据的“删除”走这里。 */
    private String doInvalidate(String entityKeyword, String recordKeyword, boolean cancel) {
        String verb = cancel ? "复原" : "作废";
        if (isBlank(entityKeyword) || isBlank(recordKeyword)) {
            return err("缺少实体类型或记录名称。");
        }
        Located l = locateRecord(entityKeyword, recordKeyword, verb);
        if (l.error != null) {
            return l.error;
        }
        String description = verb + "【" + l.recordName + "】（" + entityKeyword + "）";
        // sNewValue 存 handleType：toVoid=作废 / cancel=复原；执行走 ERP updatebInvalid
        String opId = ops.createDraft(identity.userId(), "invalid", l.formId, l.moduleId, l.table, l.billId,
                null, null, null, cancel ? "cancel" : "toVoid", description);

        Map<String, Object> out = new LinkedHashMap<>();
        out.put("opId", opId);
        out.put("summary", description);
        out.put("message", "已为你生成一条待确认的" + verb + "，请在下方点【确认】执行、或【取消】。");
        return toJson(out);
    }

    /** 修改某条记录的某个字段。见 {@link #proposeWrite}。 */
    private String doUpdate(String entityKeyword, String recordKeyword, String fieldChinese, String newValue) {

        if (isBlank(entityKeyword) || isBlank(recordKeyword) || isBlank(fieldChinese)) {
            return err("缺少信息：需要实体类型、记录名称关键词、字段中文名、新值。");
        }

        // 1) 定位主表 + 唯一记录
        Located l = locateRecord(entityKeyword, recordKeyword, "修改");
        if (l.error != null) {
            return l.error;
        }

        // 2) 字段中文名 -> 技术列名
        String field = queryOne(
                "SELECT sField FROM viw_kg_field_dict WHERE sTable=? AND sChinese=? ORDER BY iFormUses DESC LIMIT 1",
                l.table, fieldChinese.trim());
        if (field == null) {
            field = queryOne(
                    "SELECT sField FROM viw_kg_field_dict WHERE sTable=? AND sChinese LIKE ? ORDER BY iFormUses DESC LIMIT 1",
                    l.table, "%" + fieldChinese.trim() + "%");
        }
        if (field == null) {
            return err("在该表单里找不到叫「" + fieldChinese + "」的字段，请换个字段名或先查看该表单有哪些字段。");
        }
        String oldValue = l.rec.path(field).asText("");

        // 3) 暂存 draft（不执行）
        String description = "将【" + l.recordName + "】的【" + fieldChinese + "】"
                + (oldValue.isBlank() ? "" : ("由「" + oldValue + "」")) + "改为「" + newValue + "」";
        String opId = ops.createDraft(identity.userId(), "update", l.formId, l.moduleId, l.table, l.billId,
                field, fieldChinese, oldValue, newValue, description);

        Map<String, Object> out = new LinkedHashMap<>();
        out.put("opId", opId);
        out.put("summary", description);
        out.put("message", "已为你生成一条待确认的修改，请在下方点【确认】执行、或【取消】。");
        return toJson(out);
    }

    /** 物理删除一条记录（罕用；业务单据请用 doInvalidate 作废）。见 {@link #proposeWrite}。 */
    private String doDelete(String entityKeyword, String recordKeyword) {

        if (isBlank(entityKeyword) || isBlank(recordKeyword)) {
            return err("缺少实体类型或记录名称。");
        }
        Located l = locateRecord(entityKeyword, recordKeyword, "删除");
        if (l.error != null) {
            return l.error;
        }
        String description = "删除【" + l.recordName + "】（" + entityKeyword + "）";
        String opId = ops.createDraft(identity.userId(), "delete", l.formId, l.moduleId, l.table, l.billId,
                null, null, l.recordName, null, description);

        Map<String, Object> out = new LinkedHashMap<>();
        out.put("opId", opId);
        out.put("summary", description);
        out.put("message", "已为你生成一条待确认的删除，请在下方点【确认】执行、或【取消】。删除不可恢复，请谨慎。");
        return toJson(out);
    }

    /** 新增一条记录（报价走多表 proposeQuote）。见 {@link #proposeWrite}。 */
    private String doCreate(String entityKeyword, String fieldsJson) {

        if (isBlank(entityKeyword)) {
            return err("缺少实体类型。");
        }
        Map<String, Object> form = resolveForm(entityKeyword.trim());
        if (form == null) {
            return err("找不到「" + entityKeyword + "」对应的可新增主表。");
        }
        String formId = str(form.get("sFormId"));
        String moduleId = str(form.get("sModuleId"));
        String table = str(form.get("sDataSource"));
        if (!identity.canAccessModule(moduleId)) {
            return err("你没有新增「" + entityKeyword + "」的权限。");
        }

        // 报价是跨表主-从单据 → 走多表创建（主表 + 印刷/部件从表 + 多数量）
        if ("quoquotationmaster".equalsIgnoreCase(table)) {
            return proposeQuote(fieldsJson, formId, moduleId, table);
        }

        Map<String, String> types = resolver.columnTypes(table);
        // 权威 label -> {col, fk} 映射（与 collectForm 同源：策展/字段字典），保证前端标签能被正确回映射
        Map<String, Map<String, Object>> labelMap = new LinkedHashMap<>();
        for (Map<String, Object> bfm : resolver.businessFields(table, 40)) {
            labelMap.put(normLabel(String.valueOf(bfm.get("label"))), bfm);
        }
        Map<String, Object> col = new LinkedHashMap<>();
        List<String> descParts = new ArrayList<>();
        try {
            if (!isBlank(fieldsJson)) {
                JsonNode fj = mapper.readTree(fieldsJson.trim());
                Iterator<Map.Entry<String, JsonNode>> it = fj.fields();
                while (it.hasNext()) {
                    Map.Entry<String, JsonNode> e = it.next();
                    String zh = e.getKey();
                    String v = e.getValue().asText("");
                    if (isBlank(v)) {
                        continue;
                    }
                    Map<String, Object> fm = labelMap.get(normLabel(zh));
                    if (fm == null) {
                        fm = resolveColumn(table, zh); // 回退字段字典
                    }
                    if (fm == null) {
                        continue; // 该实体没有这个字段，忽略
                    }
                    String colName = str(fm.get("col"));
                    // 别让 LLM/用户直填系统列（制单人/单据日期/租户/单号…），交给 ERP 与下方系统列处理
                    if (resolver.isSystemColumn(colName)) {
                        continue;
                    }
                    String fk = str(fm.get("fk"));
                    if (fk != null && !fk.isBlank()) {
                        String id = resolver.resolveFk(fk, v); // 外键：名称 -> id
                        if (id == null) {
                            String ent = zh.replace("名称", "");
                            return err("「" + v + "」不是系统里已有的" + ent + "。请让用户从下拉里选真实存在的"
                                    + ent + "；**不要**因此新建" + ent + "。");
                        }
                        col.put(colName, id);
                    } else {
                        Object cv = resolver.coerce(types.get(colName), v); // 按列类型强转
                        if (cv != null) {
                            col.put(colName, cv);
                        }
                    }
                    descParts.add(zh + "=" + v);
                }
            }
        } catch (Exception ex) {
            return err("字段解析失败：" + ex.getMessage());
        }
        if (descParts.isEmpty()) {
            return err("请至少提供一个有效字段（如客户名称）。");
        }

        // 自动补齐 NOT-NULL 无默认列（系统列跳过；其余按类型给默认 0/''）
        for (String rc : requiredCols(table)) {
            if (col.containsKey(rc) || resolver.isSystemColumn(rc)) {
                continue;
            }
            col.put(rc, resolver.typeDefault(rc, types.get(rc)));
        }
        // 系统列：主键 + 表单id + 单号（租户/制单人/日期由 ERP 注入，不填）
        col.put("sId", erp.newUuid(identity.token()));
        col.put("sFormId", formId);
        String billNo = resolver.nextBillNo(table, identity.brandsId());
        if (billNo != null) {
            col.put("sBillNo", billNo);
        }

        String payload;
        try {
            payload = mapper.writeValueAsString(col);
        } catch (Exception e) {
            return err("内部错误：" + e.getMessage());
        }
        String description = "新增【" + entityKeyword + "】：" + String.join("，", descParts);
        String opId = ops.createDraftPayload(identity.userId(), "create", formId, moduleId, table, payload, description);

        Map<String, Object> out = new LinkedHashMap<>();
        out.put("opId", opId);
        out.put("summary", description);
        out.put("message", "已为你生成一条待确认的新增，请在下方点【确认】执行、或【取消】。");
        return toJson(out);
    }

    /** 审核(iFlag=1)/反审核·销审(iFlag=0)一条单据 → ERP doExamine。见 {@link #proposeWrite}。 */
    private String doExamineOp(String entityKeyword, String recordKeyword, int iFlag) {

        if (isBlank(entityKeyword) || isBlank(recordKeyword)) {
            return err("缺少单据类型或单号/名称。");
        }
        String verb = iFlag == 1 ? "审核" : "反审核";
        Located l = locateRecord(entityKeyword, recordKeyword, verb);
        if (l.error != null) {
            return l.error;
        }
        String description = verb + "【" + l.recordName + "】（" + entityKeyword + "）";
        // examine：sNewValue 存 iFlag（1=审核，0=反审核/销审）；执行走 ERP doExamine（存储过程驱动）
        String opId = ops.createDraft(identity.userId(), "examine", l.formId, l.moduleId, l.table, l.billId,
                null, null, null, String.valueOf(iFlag), description);

        Map<String, Object> out = new LinkedHashMap<>();
        out.put("opId", opId);
        out.put("summary", description);
        out.put("message", "已为你生成一条待确认的" + verb + "，请在下方点【确认】执行、或【取消】。审核有业务后果，请谨慎。");
        return toJson(out);
    }

    /**
     * 报价多表创建：主表(quoquotationmaster) + 印刷/部件从表(quoquotationslave) + 多数量(quoquotationmanyqtys)。
     * 字段按策展的 target 表分流；印刷/颜色/单双面无独立列 → 合进从表 sMaterialsMemo；多数量按逗号拆多行。
     * 价格由 ERP【核价】计算，本工具只落主-从明细。生成 __tables__ 结构化 payload，确认端点做多表写入。
     */
    private String proposeQuote(String fieldsJson, String formId, String moduleId, String table) {
        Map<String, String> masterTypes = resolver.columnTypes(table);
        Map<String, String> slaveTypes = resolver.columnTypes("quoquotationslave");
        Map<String, Map<String, Object>> labelMap = new LinkedHashMap<>();
        for (Map<String, Object> bfm : resolver.businessFields(table, 40)) {
            labelMap.put(normLabel(String.valueOf(bfm.get("label"))), bfm);
        }

        Map<String, Object> masterCol = new LinkedHashMap<>();
        Map<String, Object> slaveCol = new LinkedHashMap<>();
        List<String> notes = new ArrayList<>();
        List<String> manyQtys = new ArrayList<>();
        List<String> descParts = new ArrayList<>();
        String custId = null;
        try {
            if (!isBlank(fieldsJson)) {
                JsonNode fj = mapper.readTree(fieldsJson.trim());
                Iterator<Map.Entry<String, JsonNode>> it = fj.fields();
                while (it.hasNext()) {
                    Map.Entry<String, JsonNode> e = it.next();
                    String zh = e.getKey();
                    String v = e.getValue().asText("");
                    if (isBlank(v)) {
                        continue;
                    }
                    Map<String, Object> fm = labelMap.get(normLabel(zh));
                    if (fm == null) {
                        continue;
                    }
                    String colName = str(fm.get("col"));
                    String tgt = fm.get("table") == null ? "master" : str(fm.get("table"));
                    String fk = str(fm.get("fk"));
                    if ("note".equals(tgt)) {
                        notes.add(zh + "=" + v);
                        descParts.add(zh + "=" + v);
                        continue;
                    }
                    if ("manyqtys".equals(tgt)) {
                        for (String q : v.split("[,，、\\s]+")) {
                            String n = q.replaceAll("[^0-9.]", "");
                            if (!n.isEmpty()) {
                                manyQtys.add(n);
                            }
                        }
                        descParts.add(zh + "=" + v);
                        continue;
                    }
                    Object value;
                    if (fk != null && !fk.isBlank()) {
                        String id = resolver.resolveFk(fk, v);
                        if (id == null) {
                            String ent = zh.replace("名称", "");
                            return err("「" + v + "」不是系统里已有的" + ent + "。请用 collectForm 让用户从下拉里选真实存在的"
                                    + ent + "；**不要**因此新建" + ent + "，也不要把产品/规格当成客户。");
                        }
                        value = id;
                        if ("sCustomerId".equals(colName)) {
                            custId = id;
                        }
                    } else {
                        String dt = "slave".equals(tgt) ? slaveTypes.get(colName) : masterTypes.get(colName);
                        value = resolver.coerce(dt, v);
                    }
                    if (value != null) {
                        if ("slave".equals(tgt)) {
                            slaveCol.put(colName, value);
                        } else {
                            masterCol.put(colName, value);
                        }
                    }
                    descParts.add(zh + "=" + v);
                }
            }
        } catch (Exception ex) {
            return err("字段解析失败：" + ex.getMessage());
        }
        if (descParts.isEmpty()) {
            return err("请至少填写一个字段（如客户名称/产品名称/数量）。");
        }

        // 主表：补必填(非系统) + 主键 + 表单id + 单号
        for (String rc : requiredCols(table)) {
            if (masterCol.containsKey(rc) || resolver.isSystemColumn(rc)) {
                continue;
            }
            masterCol.put(rc, resolver.typeDefault(rc, masterTypes.get(rc)));
        }
        String masterId = erp.newUuid(identity.token());
        masterCol.put("sId", masterId);
        masterCol.put("sFormId", formId);
        String billNo = resolver.nextBillNo(table, identity.brandsId());
        if (billNo != null) {
            masterCol.put("sBillNo", billNo);
        }

        List<Map<String, Object>> tables = new ArrayList<>();
        tables.add(tableItem("quoquotationmaster", "master", masterCol));

        // 印刷/部件从表：有从表字段或印刷备注就建一行（sCustomerId 从表 NOT-NULL）
        if (!slaveCol.isEmpty() || !notes.isEmpty()) {
            if (!notes.isEmpty()) {
                String memo = String.join("；", notes);
                Object exist = slaveCol.get("sMaterialsMemo");
                slaveCol.put("sMaterialsMemo", exist == null ? memo : (exist + "；" + memo));
            }
            slaveCol.put("sId", erp.newUuid(identity.token()));
            slaveCol.put("sParentId", masterId);
            slaveCol.put("sCustomerId", custId == null ? "" : custId);
            tables.add(tableItem("quoquotationslave", "slave", slaveCol));
        }
        // 多数量报价：每个数量一行
        for (String q : manyQtys) {
            Map<String, Object> mq = new LinkedHashMap<>();
            mq.put("sId", erp.newUuid(identity.token()));
            mq.put("sParentId", masterId);
            mq.put("dManyQty", q);
            tables.add(tableItem("quoquotationmanyqtys", "slave", mq));
        }

        Map<String, Object> wrap = new LinkedHashMap<>();
        wrap.put("__tables__", tables);
        String payload;
        try {
            payload = mapper.writeValueAsString(wrap);
        } catch (Exception e) {
            return err("内部错误：" + e.getMessage());
        }
        String description = "新增【报价】：" + String.join("，", descParts)
                + "（含印刷/多数量明细；价格请在 ERP 点【核价】计算）";
        String opId = ops.createDraftPayload(identity.userId(), "create", formId, moduleId, table, payload, description);

        Map<String, Object> out = new LinkedHashMap<>();
        out.put("opId", opId);
        out.put("summary", description);
        out.put("message", "已为你生成一条待确认的报价新增（主表+印刷明细+多数量），请点【确认】执行、或【取消】。价格在 ERP 里点【核价】计算。");
        return toJson(out);
    }

    private Map<String, Object> tableItem(String sTable, String name, Map<String, Object> column) {
        Map<String, Object> m = new LinkedHashMap<>();
        m.put("sTable", sTable);
        m.put("name", name);
        m.put("column", column);
        return m;
    }

    /** 中文名 -> {col, fk}（字段字典，先精确合并模糊，取使用度最高的一列）。 */
    private Map<String, Object> resolveColumn(String table, String zh) {
        try {
            List<Map<String, Object>> r = jdbc.queryForList(
                    "SELECT sField col, MAX(sFkTable) fk FROM viw_kg_field_dict " +
                            "WHERE sTable=? AND (sChinese=? OR sChinese LIKE ?) " +
                            "GROUP BY sField ORDER BY SUM(iFormUses) DESC LIMIT 1",
                    table, zh, "%" + zh + "%");
            return r.isEmpty() ? null : r.get(0);
        } catch (Exception e) {
            return null;
        }
    }

    /** 目标表的 NOT-NULL 无默认列（排除 ERP 会自动注入的租户/制单人）。 */
    private List<String> requiredCols(String table) {
        List<String> out = new ArrayList<>();
        try {
            List<Map<String, Object>> rows = jdbc.queryForList(
                    "SELECT COLUMN_NAME FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=DATABASE() AND TABLE_NAME=? " +
                            "AND IS_NULLABLE='NO' AND COLUMN_DEFAULT IS NULL AND EXTRA NOT LIKE '%auto_increment%'", table);
            Set<String> skip = Set.of("sBrandsId", "sSubsidiaryId", "sMakePerson");
            for (Map<String, Object> r : rows) {
                String c = str(r.get("COLUMN_NAME"));
                if (c != null && !skip.contains(c)) {
                    out.add(c);
                }
            }
        } catch (Exception ignore) {
        }
        return out;
    }

    /** 定位实体的可写主表——统一走 FormResolverService（与 collectForm 同源，含从属/参数表排除）。 */
    private Map<String, Object> resolveForm(String entityKeyword) {
        return resolver.resolveMasterForm(entityKeyword);
    }

    /** {@link #locateRecord} 的结果：error 非空表示失败（已是 err() JSON）；否则携带定位到的主表与唯一记录。 */
    private static final class Located {
        String error;
        String formId;
        String moduleId;
        String table;
        JsonNode rec;
        String billId;
        String recordName;
    }

    /** 定位主表 + 唯一记录（update/invalid/examine/delete 共用）：解析主表 → 权限 → 名称字段模糊匹配 → 0 条/多条/缺主键报错。 */
    private Located locateRecord(String entityKeyword, String recordKeyword, String verb) {
        Located l = new Located();
        Map<String, Object> form = resolveForm(entityKeyword.trim());
        if (form == null) {
            l.error = err("找不到「" + entityKeyword + "」对应的可操作主表。");
            return l;
        }
        l.formId = str(form.get("sFormId"));
        l.moduleId = str(form.get("sModuleId"));
        l.table = str(form.get("sDataSource"));
        if (!identity.canAccessModule(l.moduleId)) {
            l.error = err("你没有" + verb + "「" + entityKeyword + "」的权限。");
            return l;
        }
        String nameField = resolver.resolveNameField(l.table);
        JsonNode root;
        try {
            root = erp.readForm(identity.token(), l.formId, l.moduleId, 1, 5, nameField, recordKeyword.trim());
        } catch (Exception e) {
            l.error = err("定位记录失败：" + e.getMessage());
            return l;
        }
        if (root.path("code").asInt(0) < 0) {
            l.error = err("定位记录失败：" + root.path("msg").asText("未知错误"));
            return l;
        }
        JsonNode rows = root.path("dataset").path("rows");
        JsonNode data = (rows.isArray() && rows.size() > 0) ? rows.get(0).path("dataSet") : null;
        int n = (data != null && data.isArray()) ? data.size() : 0;
        if (n == 0) {
            l.error = err("没有找到名称含「" + recordKeyword + "」的记录。");
            return l;
        }
        if (n > 1) {
            StringBuilder names = new StringBuilder();
            for (int i = 0; i < data.size() && i < 5; i++) {
                if (i > 0) names.append("、");
                names.append(nameField == null ? "" : data.get(i).path(nameField).asText(""));
            }
            l.error = err("匹配到多条记录（" + names + "），请提供更精确的名称，只" + verb + "其中一条。");
            return l;
        }
        l.rec = data.get(0);
        l.billId = l.rec.path("sId").asText(null);
        if (isBlank(l.billId)) {
            l.error = err("定位到的记录缺少主键 sId，无法" + verb + "。");
            return l;
        }
        l.recordName = nameField == null ? recordKeyword : l.rec.path(nameField).asText(recordKeyword);
        return l;
    }

    private static String str(Object o) {
        return o == null ? null : o.toString();
    }

    private String queryOne(String sql, Object... args) {
        try {
            List<Map<String, Object>> r = jdbc.queryForList(sql, args);
            if (!r.isEmpty()) {
                Object v = r.get(0).values().iterator().next();
                return v == null ? null : v.toString();
            }
        } catch (Exception ignore) {
        }
        return null;
    }

    private static boolean isBlank(String s) {
        return s == null || s.isBlank();
    }

    /** 归一化标签用于匹配：去掉括号提示与空白（"多数量(逗号分隔)" ⇄ "多数量"）。 */
    private static String normLabel(String s) {
        if (s == null) {
            return "";
        }
        return s.replaceAll("[（(].*?[）)]", "").replaceAll("\\s+", "").trim();
    }

    private String err(String msg) {
        Map<String, Object> m = new LinkedHashMap<>();
        m.put("error", msg);
        return toJson(m);
    }

    private String toJson(Map<String, Object> m) {
        try {
            return mapper.writeValueAsString(m);
        } catch (Exception e) {
            return "{\"error\":\"内部错误\"}";
        }
    }
}