/* @tier medium @module mm @transform master-online */
/*
 * mm_ol_0005.pgc - 수수료율 조회 서비스 (MM_OL_0005)  [tier=medium]
 *
 * 가맹점ID + 상품구분(prod_gb)으로 현재 유효한 수수료율(mm_fee_rate)을
 * 조회한다. 유효기간(start_date~end_date)에 오늘이 포함된 행을 반환하며,
 * 미등록이면 ERRCODE 로 반려한다. (조회)
 */
#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_0005, ctx)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_merch_id[16];
    char h_prod_gb[4];
    char h_today[9];
    char h_start[9];
    char h_end[9];
    long h_rate_bp;
    EXEC SQL END DECLARE SECTION;

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

    tx_log(TX_LOG_INFO, "[MM_OL_0005] 수수료율 조회 서비스 진입");

    if (tx_buf_get(ctx->in, "MERCHID", merch_id, sizeof(merch_id)) != TX_OK ||
        tx_buf_get(ctx->in, "PRODGB", prod_gb, sizeof(prod_gb)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[MM_OL_0005] 필수 필드 누락");
        tx_buf_sets(ctx->out, "ERRCODE", "MM0500");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    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';
    date_today(h_today);

    /* 현재 유효한 수수료율 1건 (rate 는 bp = 0.01% 단위 정수) */
    EXEC SQL SELECT rate_bp, start_date, end_date
          INTO :h_rate_bp, :h_start, :h_end
          FROM mm_fee_rate
         WHERE merch_id   = :h_merch_id
           AND prod_gb    = :h_prod_gb
           AND start_date <= :h_today
           AND end_date   >= :h_today;

    if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
        tx_log(TX_LOG_WARN, "[MM_OL_0005] 유효 수수료율 미등록 merch=%s prod=%s",
               merch_id, prod_gb);
        tx_buf_sets(ctx->out, "ERRCODE", "MM0501");
        tx_return(ctx, TX_ENOENT, ctx->out);
        return;
    }
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("SELECT mm_fee_rate");
        tx_buf_sets(ctx->out, "ERRCODE", "MM0502");
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    /* bp -> 퍼센트 문자열 (예: 250bp -> 2.50%) */
    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_setlong(ctx->out, "RATEBP", h_rate_bp);
    tx_buf_sets(ctx->out, "RATEPCT", rate_str);
    tx_buf_sets(ctx->out, "STARTDATE", h_start);
    tx_buf_sets(ctx->out, "ENDDATE", h_end);
    tx_buf_sets(ctx->out, "ERRCODE", RESP_OK);
    tx_log(TX_LOG_INFO, "[MM_OL_0005] 조회완료 merch=%s prod=%s rate=%s%%",
           merch_id, prod_gb, rate_str);
    tx_return(ctx, TX_OK, ctx->out);
}