package com.talentcard.server.business.admin;

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

import com.alibaba.fastjson.JSON;
import com.talentcard.server.business.DatabaseRows;
import com.talentcard.server.business.PageResult;
import com.talentcard.server.business.payment.huifu.HuifuSettlementRecordGateway;
import com.talentcard.server.common.BusinessException;
import com.talentcard.server.common.ErrorCode;
import com.talentcard.server.common.SensitiveDataCrypto;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.talentcard.server.business.merchant.MerchantPaymentReadinessService;

/**
 * 后台结算管理。
 *
 * <p>出款由斗拱按结算周期自动完成（核销确认后的钱进商户基本户，次日自动结算到结算卡），
 * 平台不再产生提现记录。后台保留进件、银行卡查询、收款能力快照刷新，以及向通道查询
 * 真实结算记录用于监控每天结了多少到银行卡。
 */
@Service
public class MerchantSettlementAdminService {
    private final JdbcTemplate jdbc;
    private final SensitiveDataCrypto sensitiveDataCrypto;
    private final MerchantPaymentReadinessService readinessService;
    private final HuifuSettlementRecordGateway settlementRecordGateway;
    @org.springframework.beans.factory.annotation.Autowired
    private com.talentcard.server.business.merchant.MerchantOnboardingProgressService progressService;
    @org.springframework.beans.factory.annotation.Autowired
    private com.talentcard.server.business.merchant.MerchantRealnameService realnameService;
    @org.springframework.beans.factory.annotation.Autowired
    private com.talentcard.server.business.merchant.MerchantSettlementService settlementService;

    public Map<String,Object> onboardingProgress(Long id) { return progressService.view(id); }
    /** 后台刷新与商户端走同一条路径：先推进已满足前置条件的开通步骤，再查询回报结果。 */
    public Map<String,Object> refreshOnboarding(Long id, boolean retry) { return settlementService.refreshProgress(id, retry); }
    /** 微信实名认证：平台运营可在后台代为发起；未决申请不会重复提交。 */
    public Map<String,Object> submitRealname(Long id, boolean retry) { return realnameService.submit(id, retry); }
    public MerchantSettlementAdminService(JdbcTemplate jdbc, SensitiveDataCrypto sensitiveDataCrypto, MerchantPaymentReadinessService readinessService, HuifuSettlementRecordGateway settlementRecordGateway) { this.jdbc = jdbc; this.sensitiveDataCrypto = sensitiveDataCrypto; this.readinessService = readinessService; this.settlementRecordGateway = settlementRecordGateway; }

    /**
     * 结算记录：钱按结算周期自动划到结算卡之后，「每天结了多少」只能问通道。
     *
     * <p>按门店取该商户当前生效的斗拱子商户号，逐商户查询结算记录后合并成一条时间倒序的列表。
     * 通道查询失败只影响这一条商户，不会让整页失败——监控页最重要的是「看得到」。
     *
     * <p>条数上限跟着通道走：这个接口的 {@code pageSize} 超过 50 会被判为基础参数校验失败，
     * 传 100 时整页一条流水都查不出来。上限在网关里还有一道兜底，这里只是不要再主动越界。
     */
    public Map<String, Object> settlements(String beginDate, String endDate, int size) {
        List<Map<String, Object>> merchants = rows("""
                select a.merchant_id, a.provider_huifu_id, m.merchant_name, s.store_name
                from merchant_onboarding_application a
                join merchant m on m.id = a.merchant_id
                join merchant_store s on s.id = a.store_id
                where a.status = 'approved' and a.provider_huifu_id is not null and a.provider_huifu_id <> ''
                  and a.id = (select max(newest.id) from merchant_onboarding_application newest
                              where newest.merchant_id = a.merchant_id)
                order by a.merchant_id asc
                """);
        List<Map<String, Object>> records = new ArrayList<>();
        List<String> failures = new ArrayList<>();
        int limit = Math.min(Math.max(size, 1), HuifuSettlementRecordGateway.PROVIDER_MAX_PAGE_SIZE);
        for (Map<String, Object> merchant : merchants) {
            String huifuId = String.valueOf(merchant.get("providerHuifuId"));
            try {
                HuifuSettlementRecordGateway.SettlementRecords response =
                        settlementRecordGateway.query(huifuId, beginDate, endDate, limit);
                if (!response.succeeded()) {
                    failures.add(String.valueOf(merchant.get("merchantName")) + "：" + response.message());
                    continue;
                }
                records.addAll(decode(response.rawRecords(), merchant));
            } catch (RuntimeException exception) {
                failures.add(String.valueOf(merchant.get("merchantName")) + "：查询失败");
            }
        }
        records.sort((left, right) -> String.valueOf(right.get("settleDate"))
                .compareTo(String.valueOf(left.get("settleDate"))));
        Map<String, Object> view = new LinkedHashMap<>();
        view.put("beginDate", beginDate);
        view.put("endDate", endDate);
        view.put("records", records.size() > limit ? records.subList(0, limit) : records);
        view.put("total", records.size());
        view.put("failures", failures);
        return view;
    }

    /** 把通道返回的结算记录 JSON 转成后台要展示的字段；只读展示，不做金额换算以外的加工。 */
    private List<Map<String, Object>> decode(String rawRecords, Map<String, Object> merchant) {
        List<Map<String, Object>> decoded = new ArrayList<>();
        if (rawRecords == null || rawRecords.isBlank()) return decoded;
        List<Map<String, Object>> parsed;
        try {
            parsed = JSON.parseObject(rawRecords, new com.alibaba.fastjson.TypeReference<>() { });
        } catch (RuntimeException exception) {
            return decoded;
        }
        if (parsed == null) return decoded;
        for (Map<String, Object> record : parsed) {
            Map<String, Object> row = new LinkedHashMap<>();
            row.put("merchantId", merchant.get("merchantId"));
            row.put("merchantName", merchant.get("merchantName"));
            row.put("storeName", merchant.get("storeName"));
            row.put("providerTransactionNo", record.get("trans_id"));
            row.put("settleDate", record.get("trans_date"));
            row.put("settleAmountCents", cents(record.get("trans_amt")));
            row.put("feeAmountCents", cents(record.get("fee_amt")));
            row.put("settleCycle", record.get("settle_cycle"));
            row.put("status", record.get("trans_stat"));
            row.put("cardMasked", record.get("card_no"));
            row.put("cardHolder", record.get("card_name"));
            decoded.add(row);
        }
        return decoded;
    }

    private Long cents(Object yuan) {
        if (yuan == null) return null;
        return com.talentcard.server.business.payment.huifu.HuifuPayload.amountInCent(String.valueOf(yuan));
    }

    @Transactional(readOnly = true)
    public PageResult<Map<String, Object>> onboardings(int page, int size, String merchantName, String contactMobile, String merchantType, String status, String startDate, String endDate) {
        return page("select a.*, m.merchant_name, m.merchant_type, m.contact_mobile, s.store_name from merchant_onboarding_application a join merchant m on m.id = a.merchant_id join merchant_store s on s.id = a.store_id", "select count(*) from merchant_onboarding_application a join merchant m on m.id = a.merchant_id join merchant_store s on s.id = a.store_id", "a", page, size, merchantName, contactMobile, merchantType, status, startDate, endDate);
    }
    @Transactional(readOnly = true)
    public Map<String, Object> onboarding(Long id) {
        List<Map<String, Object>> rows = rows("select a.*, a.merchant_name as onboarding_merchant_name, m.merchant_name, m.merchant_type, m.contact_mobile, s.store_name from merchant_onboarding_application a join merchant m on m.id = a.merchant_id join merchant_store s on s.id = a.store_id where a.id = ?", id);
        if (rows.isEmpty()) throw new BusinessException(ErrorCode.NOT_FOUND, "商户进件不存在");
        Map<String, Object> result = rows.get(0);
        if (progressService.supports(result)) result.put("progress", progressService.view(result));
        // 个人主体的历史记录可能使用 individual、personal 或中文类型值；
        // 只要已保存加密身份证号，后台详情均应解密后完整展示。
        String encrypted = String.valueOf(result.get("subjectIdNoEncrypted"));
        if (!encrypted.isBlank() && !"null".equals(encrypted)) result.put("subjectIdNo", sensitiveDataCrypto.decrypt(encrypted));
        return result;
    }
    @Transactional(readOnly = true)
    public PageResult<Map<String, Object>> bankCards(int page, int size, String merchantName, String contactMobile, String merchantType, String status, String startDate, String endDate) {
        PageResult<Map<String, Object>> result = page("select c.*, m.merchant_name, m.merchant_type, m.contact_mobile, s.store_name from merchant_bank_card c join merchant m on m.id = c.merchant_id join merchant_store s on s.id = c.store_id", "select count(*) from merchant_bank_card c join merchant m on m.id = c.merchant_id join merchant_store s on s.id = c.store_id", "c", page, size, merchantName, contactMobile, merchantType, status, startDate, endDate);
        result.records().forEach(row -> {
            String encrypted = String.valueOf(row.remove("cardNoEncrypted"));
            if (!encrypted.isBlank() && !"null".equals(encrypted)) row.put("cardNo", sensitiveDataCrypto.decrypt(encrypted));
            else row.put("cardNo", row.get("cardMasked"));
            row.put("cityName", bankCardCityName(row.get("cityCode")));
        });
        return result;
    }
    /** Provider-confirmed settlement and encashment capability of one approved sub-merchant. */
    public Map<String, Object> paymentCapability(Long applicationId) { return readinessService.capability(applicationId); }

    /** Re-reads the provider configuration and stores a fresh capability snapshot. */
    public Map<String, Object> refreshPaymentCapability(Long applicationId) { return readinessService.refresh(applicationId); }

    private PageResult<Map<String, Object>> page(String query, String count, String tableAlias, int page, int size, String merchantName, String contactMobile, String merchantType, String status, String startDate, String endDate) {
        return page(query, count, tableAlias, page, size, merchantName, contactMobile, merchantType, status, startDate, endDate, "");
    }

    private PageResult<Map<String, Object>> page(String query, String count, String tableAlias, int page, int size, String merchantName, String contactMobile, String merchantType, String status, String startDate, String endDate, String extraWhere) {
        int current = Math.max(1, page);
        int limit = Math.min(Math.max(1, size), 100);
        StringBuilder where = new StringBuilder(" where 1 = 1" + extraWhere);
        List<Object> args = new ArrayList<>();
        addLike(where, args, "m.merchant_name", merchantName);
        addLike(where, args, "m.contact_mobile", contactMobile);
        addEqual(where, args, "m.merchant_type", merchantType);
        addEqual(where, args, tableAlias + ".status", status);
        addDate(where, args, tableAlias + ".created_at", startDate, true);
        addDate(where, args, tableAlias + ".created_at", endDate, false);
        List<Object> rowArgs = new ArrayList<>(args);
        rowArgs.add(limit);
        rowArgs.add((current - 1) * limit);
        List<Map<String, Object>> values = rows(query + where + " order by " + tableAlias + ".created_at desc, " + tableAlias + ".id desc limit ? offset ?", rowArgs.toArray());
        Long total = jdbc.queryForObject(count + where, Long.class, args.toArray());
        return new PageResult<>(values, current, limit, total == null ? 0 : total);
    }
    private void addLike(StringBuilder where, List<Object> args, String column, String value) { if (value != null && !value.trim().isEmpty()) { where.append(" and ").append(column).append(" like ?"); args.add("%" + value.trim() + "%"); } }
    private void addEqual(StringBuilder where, List<Object> args, String column, String value) { if (value != null && !value.trim().isEmpty()) { where.append(" and ").append(column).append(" = ?"); args.add(value.trim()); } }
    private void addDate(StringBuilder where, List<Object> args, String column, String value, boolean start) { if (value != null && value.matches("\\d{4}-\\d{2}-\\d{2}")) { where.append(" and ").append(column).append(start ? " >= ?" : " < date_add(?, interval 1 day)"); args.add(value); } }
    private String bankCardCityName(Object cityCode) {
        return switch (cityCode == null ? "" : String.valueOf(cityCode).trim()) {
            case "510100" -> "四川省|成都市";
            case "510300" -> "四川省|自贡市";
            case "510400" -> "四川省|攀枝花市";
            case "510500" -> "四川省|泸州市";
            case "510600" -> "四川省|德阳市";
            case "510700" -> "四川省|绵阳市";
            case "510800" -> "四川省|广元市";
            case "510900" -> "四川省|遂宁市";
            case "511000" -> "四川省|内江市";
            case "511100" -> "四川省|乐山市";
            case "511300" -> "四川省|南充市";
            case "511400" -> "四川省|眉山市";
            case "511500" -> "四川省|宜宾市";
            case "511600" -> "四川省|广安市";
            case "511700" -> "四川省|达州市";
            case "511800" -> "四川省|雅安市";
            case "511900" -> "四川省|巴中市";
            case "512000" -> "四川省|资阳市";
            case "513200" -> "四川省|阿坝藏族羌族自治州";
            case "513300" -> "四川省|甘孜藏族自治州";
            case "513400" -> "四川省|凉山彝族自治州";
            default -> cityCode == null ? "" : String.valueOf(cityCode).trim();
        };
    }
    private List<Map<String, Object>> rows(String sql, Object... args) { return DatabaseRows.normalize(jdbc.queryForList(sql, args)); }
}