/* @tier easy @module ac @transform acquire-online */
/*
 * ac_ol_0019.pgc - 매입 온라인 서비스 (AC_OL_0019)  [tier=easy]
 *
 * 매입일자 변경: 매입 원장의 영업일을 지정일 또는 다음 영업일로 변경한다.
 */
#include <stdio.h>
#include <string.h>

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

EXEC SQL INCLUDE sqlca;

TX_SERVICE(AC_OL_0019, ctx)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[16];
    char h_old_date[9];
    char h_new_date[9];
    EXEC SQL END DECLARE SECTION;

    char key[16], newdate_in[9], computed[9];
    int  has_newdate;

    tx_log(TX_LOG_INFO, "[AC_OL_0019] 매입일자 변경 진입");

    if (tx_buf_get(ctx->in, "KEY", key, sizeof(key)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[AC_OL_0019] KEY 누락");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    has_newdate = (tx_buf_get(ctx->in, "NEWDATE", newdate_in, sizeof(newdate_in)) == TX_OK);

    strncpy(h_key, key, sizeof(h_key) - 1);
    h_key[sizeof(h_key) - 1] = '\0';

    EXEC SQL SELECT biz_date
        INTO :h_old_date
        FROM ac_ledger
        WHERE key = :h_key;

    if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
        tx_log(TX_LOG_WARN, "[AC_OL_0019] 매입 원장 없음 key=%s", key);
        tx_return(ctx, TX_ENOENT, ctx->out);
        return;
    }
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("SELECT ac_ledger biz_date");
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    if (has_newdate && date_is_valid(newdate_in)) {
        strncpy(computed, newdate_in, sizeof(computed) - 1);
        computed[sizeof(computed) - 1] = '\0';
    } else {
        if (has_newdate)
            tx_log(TX_LOG_WARN,
                   "[AC_OL_0019] NEWDATE 형식 오류(%s) - 다음영업일로 대체",
                   newdate_in);
        if (date_next_business(h_old_date, computed) != 0) {
            tx_log(TX_LOG_ERROR, "[AC_OL_0019] 다음영업일 산출 실패 date=%s",
                   h_old_date);
            tx_return(ctx, TX_FAIL, ctx->out);
            return;
        }
    }

    strncpy(h_new_date, computed, sizeof(h_new_date) - 1);
    h_new_date[sizeof(h_new_date) - 1] = '\0';

    if (strcmp(h_old_date, h_new_date) == 0) {
        tx_log(TX_LOG_INFO, "[AC_OL_0019] 변경 불필요 date=%s", h_old_date);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_OK);
        tx_buf_sets(ctx->out, "KEY", key);
        tx_buf_sets(ctx->out, "OLDDATE", h_old_date);
        tx_buf_sets(ctx->out, "NEWDATE", h_new_date);
        tx_return(ctx, TX_OK, ctx->out);
        return;
    }

    if (tx_begin() != TX_OK) {
        tx_log(TX_LOG_ERROR, "[AC_OL_0019] 트랜잭션 시작 실패");
        tx_return(ctx, TX_FAIL, ctx->out);
        return;
    }

    EXEC SQL UPDATE ac_ledger
        SET biz_date = :h_new_date
        WHERE key = :h_key;

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("UPDATE ac_ledger biz_date");
        tx_abort();
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }
    if (sqlca.sqlerrd[2] == 0) {
        tx_log(TX_LOG_WARN, "[AC_OL_0019] 변경대상 없음 key=%s", key);
        tx_abort();
        tx_return(ctx, TX_ENOENT, ctx->out);
        return;
    }

    tx_commit();

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "RESPCODE", RESP_OK);
    tx_buf_sets(ctx->out, "KEY", key);
    tx_buf_sets(ctx->out, "OLDDATE", h_old_date);
    tx_buf_sets(ctx->out, "NEWDATE", h_new_date);

    tx_log(TX_LOG_INFO, "[AC_OL_0019] 완료 key=%s %s -> %s",
           key, h_old_date, h_new_date);
    tx_return(ctx, TX_OK, ctx->out);
}
