/* @tier medium @module au @transform authorization-online */
/*
 * au_ol_0013.pgc - 무이자할부 승인(할부개월 검증+등록) (AU_OL_0013)  [tier=medium]
 *
 * TxCore TX_SERVICE 엔트리. 요청 TXBUF 를 검증하고 임베디드 SQL / 표준
 * DBIO / tx_call 로 처리한 뒤 응답 TXBUF 를 구성한다.
 */
#include <stdio.h>
#include <string.h>

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

EXEC SQL INCLUDE sqlca;

TX_SERVICE(AU_OL_0013, ctx)
{
    char key[16];
    if (tx_buf_get(ctx->in, "KEY", key, sizeof(key)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[AU_OL_0013] KEY 누락");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[16], h_merch[16], h_bdate[9];
    long h_amount, h_fee;
    int  h_inst;
    EXEC SQL END DECLARE SECTION;

    char merch[16];
    long amount = 0;
    int  inst = 0;

    tx_log(TX_LOG_INFO, "[AU_OL_0013] 무이자할부 승인 진입");
    if (tx_buf_get(ctx->in, "MERCHID", merch, sizeof(merch)) != TX_OK) {
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    tx_buf_getlong(ctx->in, "AMOUNT", &amount);
    { long v = 0; tx_buf_getlong(ctx->in, "INSTMONTH", &v); inst = (int)v; }

    if (inst < 2 || inst > 12 || amount < 50000L) {
        tx_log(TX_LOG_WARN, "[AU_OL_0013] 무이자 조건미달 inst=%d amt=%ld", inst, amount);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_return(ctx, TX_FAIL, ctx->out);
        return;
    }

    strncpy(h_key, key, 15); h_key[15] = '\0';
    strncpy(h_merch, merch, 15); h_merch[15] = '\0';
    date_today(h_bdate);
    h_amount = amount;
    h_inst = inst;
    h_fee = 0;   /* 무이자: 수수료 0 */

    if (tx_begin() != TX_OK) tx_log(TX_LOG_WARN, "[AU_OL_0013] tx_begin 경고");
    EXEC SQL INSERT INTO au_ledger (key, merch_id, card_no, amount, biz_date, status, fee)
        VALUES (:h_key, :h_merch, 'INSTALLMENT', :h_amount, :h_bdate, 'R', :h_fee);
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("au_ol_0013 할부등록");
        tx_abort();
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }
    tx_commit();

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "RESPCODE", RESP_OK);
    tx_buf_setlong(ctx->out, "INSTMONTH", h_inst);
    tx_buf_setlong(ctx->out, "MONTHLYAMT", h_amount / h_inst);
    tx_log(TX_LOG_INFO, "[AU_OL_0013] 무이자할부 승인 %d개월 월납=%ld",
           h_inst, h_amount / h_inst);
    tx_return(ctx, TX_OK, ctx->out);
}