/* @tier easy @module cl @transform closing-online */
/*
 * cl_ol_0021.pgc - 마감 온라인 서비스 (CL_OL_0021)  [tier=easy]
 *
 * 잔액검증 재수행
 * ----------------------------------------------------------------------
 * 요청 영업일(BIZDATE)의 정산완료(S) 합계금액과 당일 전체 합계금액을
 * 각각 산출한 뒤, 그 차액을 아직 정산되지 않은 미마감분 잔액으로
 * 응답한다. 차액이 0 이면 잔액검증 일치(MATCH=Y).
 *
 * 금액 차이의 근거를 제공하기 위해 정산완료 건수/전체 건수도 함께
 * 조회하여 미정산 건수를 도출하고, 각 금액을 원화 표기로 변환하여
 * 응답에 함께 싣는다. 감사추적을 위해 선택 입력 REQID/OPER 를 로그·
 * 응답에 반영한다.
 */
#include <stdio.h>
#include <string.h>

#include "txcore.h"
#include "txcore_dbio.h"
#include "acq_util.h"
#include "cl_core.h"

EXEC SQL INCLUDE sqlca;

TX_SERVICE(CL_OL_0021, ctx)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9];
    long h_settled_sum;
    int  h_settled_cnt;
    int  h_total_cnt;
    EXEC SQL END DECLARE SECTION;

    char bizdate[16];
    char reqid[32];
    char oper[32];
    char diff_won[32];
    char settled_won[32];
    char total_won[32];
    long total_sum = 0;
    long diff;
    long unsettled_cnt;

    tx_log(TX_LOG_INFO, "[CL_OL_0021] 잔액검증 재수행 서비스 진입");

    /* 1) 입력 수신 및 검증 */
    if (tx_buf_get(ctx->in, "BIZDATE", bizdate, sizeof(bizdate)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[CL_OL_0021] BIZDATE 누락");
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    if (tx_buf_get(ctx->in, "REQID", reqid, sizeof(reqid)) != TX_OK)
        strncpy(reqid, "-", sizeof(reqid) - 1);
    if (tx_buf_get(ctx->in, "OPER", oper, sizeof(oper)) != TX_OK)
        strncpy(oper, "BATCH", sizeof(oper) - 1);

    if (!date_is_valid(bizdate)) {
        tx_log(TX_LOG_WARN, "[CL_OL_0021] 영업일 형식 오류 date=%s", bizdate);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    memset(h_biz_date, 0, sizeof(h_biz_date));
    strncpy(h_biz_date, bizdate, sizeof(h_biz_date) - 1);

    /* 2) 정산완료(S) 합계금액 + 건수 조회 */
    EXEC SQL SELECT coalesce(sum(amount), 0), count(*)
        INTO :h_settled_sum, :h_settled_cnt
        FROM cl_ledger
        WHERE biz_date = :h_biz_date
          AND status = 'S';

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("cl_ol_0021 정산합계");
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    /* 3) 당일 전체 건수 조회 (요약행 제외) */
    EXEC SQL SELECT count(*)
        INTO :h_total_cnt
        FROM cl_ledger
        WHERE biz_date = :h_biz_date
          AND merch_id <> '*AGG';

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("cl_ol_0021 전체건수");
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    /* 4) 당일 전체 합계금액 조회 (표준 DBIO) */
    if (cl_rec_sum(bizdate, &total_sum) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[CL_OL_0021] 전체합계 조회 실패 date=%s", bizdate);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    /* 5) 차액 = 미마감분 잔액, 미정산 건수 도출 */
    diff          = total_sum - h_settled_sum;
    unsettled_cnt = (long)h_total_cnt - (long)h_settled_cnt;
    amount_format_won(diff, diff_won, sizeof(diff_won));
    amount_format_won(h_settled_sum, settled_won, sizeof(settled_won));
    amount_format_won(total_sum, total_won, sizeof(total_won));

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "RESPCODE", RESP_OK);
    tx_buf_sets(ctx->out, "BIZDATE", bizdate);
    tx_buf_sets(ctx->out, "REQID", reqid);
    tx_buf_sets(ctx->out, "OPER", oper);
    tx_buf_setlong(ctx->out, "SETTLEDSUM", h_settled_sum);
    tx_buf_sets(ctx->out, "SETTLEDSUMWON", settled_won);
    tx_buf_setlong(ctx->out, "TOTALSUM", total_sum);
    tx_buf_sets(ctx->out, "TOTALSUMWON", total_won);
    tx_buf_setlong(ctx->out, "DIFF", diff);
    tx_buf_sets(ctx->out, "DIFFWON", diff_won);
    tx_buf_setlong(ctx->out, "SETTLEDCNT", (long)h_settled_cnt);
    tx_buf_setlong(ctx->out, "TOTALCNT", (long)h_total_cnt);
    tx_buf_setlong(ctx->out, "UNSETTLEDCNT", unsettled_cnt);
    tx_buf_sets(ctx->out, "MATCH", (diff == 0) ? "Y" : "N");

    tx_log(TX_LOG_INFO,
           "[CL_OL_0021] 완료 date=%s 정산=%ld 전체=%ld 차액=%ld 미정산건=%ld",
           bizdate, h_settled_sum, total_sum, diff, unsettled_cnt);
    tx_return(ctx, TX_OK, ctx->out);
}