/* @tier easy @module mm @transform master-online */
/*
 * mm_ol_0017.pgc - 수수료율 이력조회 서비스 (MM_OL_0017)  [tier=easy]
 *
 * 가맹점의 수수료율 변경이력(mm_fee_hist)에서 가장 최근 1건(적용일/rate/
 * 변경자)을 조회한다. 상품구분(prod_gb)이 주어지면 해당 상품으로 한정한다.
 * (이력조회)
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

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

EXEC SQL INCLUDE sqlca;

TX_SERVICE(MM_OL_0017, ctx)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_merch_id[16];
    char h_prod_gb[4];
    char h_apply_date[9];
    long h_rate_bp;
    long h_chg_by;
    EXEC SQL END DECLARE SECTION;

    char merch_id[16];
    char prod_gb[4];
    char rate_str[16];

    tx_log(TX_LOG_INFO, "[MM_OL_0017] 수수료율 이력조회 서비스 진입");

    if (tx_buf_get(ctx->in, "MERCHID", merch_id, sizeof(merch_id)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[MM_OL_0017] MERCHID 누락");
        tx_buf_sets(ctx->out, "ERRCODE", "MM1700");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    /* 상품구분은 선택 항목 - 없으면 전체상품 대상 */
    if (tx_buf_get(ctx->in, "PRODGB", prod_gb, sizeof(prod_gb)) != TX_OK)
        prod_gb[0] = '\0';

    strncpy(h_merch_id, merch_id, sizeof(h_merch_id) - 1);
    h_merch_id[sizeof(h_merch_id) - 1] = '\0';
    strncpy(h_prod_gb, prod_gb, sizeof(h_prod_gb) - 1);
    h_prod_gb[sizeof(h_prod_gb) - 1] = '\0';

    if (prod_gb[0] != '\0') {
        EXEC SQL SELECT apply_date, rate_bp, chg_by
              INTO :h_apply_date, :h_rate_bp, :h_chg_by
              FROM mm_fee_hist
             WHERE merch_id = :h_merch_id
               AND prod_gb  = :h_prod_gb
             ORDER BY apply_date DESC, seq_no DESC
             FETCH FIRST 1 ROWS ONLY;
    } else {
        EXEC SQL SELECT apply_date, rate_bp, chg_by
              INTO :h_apply_date, :h_rate_bp, :h_chg_by
              FROM mm_fee_hist
             WHERE merch_id = :h_merch_id
             ORDER BY apply_date DESC, seq_no DESC
             FETCH FIRST 1 ROWS ONLY;
    }

    if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
        tx_log(TX_LOG_WARN, "[MM_OL_0017] 수수료율 이력없음 merch=%s", merch_id);
        tx_buf_sets(ctx->out, "ERRCODE", "MM1701");
        tx_return(ctx, TX_ENOENT, ctx->out);
        return;
    }
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("SELECT mm_fee_hist");
        tx_buf_sets(ctx->out, "ERRCODE", "MM1702");
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    snprintf(rate_str, sizeof(rate_str), "%ld.%02ld",
             h_rate_bp / 100, h_rate_bp % 100);

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "MERCHID", merch_id);
    tx_buf_sets(ctx->out, "PRODGB", prod_gb);
    tx_buf_sets(ctx->out, "APPLYDATE", h_apply_date);
    tx_buf_setlong(ctx->out, "RATEBP", h_rate_bp);
    tx_buf_sets(ctx->out, "RATEPCT", rate_str);
    tx_buf_setlong(ctx->out, "CHGBY", h_chg_by);
    tx_buf_sets(ctx->out, "ERRCODE", RESP_OK);
    tx_log(TX_LOG_INFO, "[MM_OL_0017] 이력조회완료 merch=%s 적용일=%s rate=%s%%",
           merch_id, h_apply_date, rate_str);
    tx_return(ctx, TX_OK, ctx->out);
}