/* @tier easy @module st @transform settlement-online */
/*
 * st_ol_0023.pgc - 정산 이체연계 요청 (ST_OL_0023)  [tier=easy]
 *
 * 확정 정산금에 대한 은행 이체(펌뱅킹) 연계 요청 전문을 구성한다.
 * 계좌/은행/금액 검증 후 이체 요청 식별자를 생성하고, 이체요청 큐
 * (st_transfer_req)에 REQUESTED 상태로 적재한다.
 */
#include <stdio.h>
#include <string.h>

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

EXEC SQL INCLUDE sqlca;


TX_SERVICE(ST_OL_0023, ctx)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_reqid[32];
    char h_merch[16];
    char h_bank[8];
    char h_acct[24];
    long h_amount;
    EXEC SQL END DECLARE SECTION;

    char merch[16], bank[8], acct[24];
    long amount = 0;
    char reqid[32];

    tx_log(TX_LOG_INFO, "[ST_OL_0023] 정산 이체연계 요청 진입");

    if (tx_buf_get(ctx->in, "MERCHID", merch, sizeof(merch)) != TX_OK ||
        tx_buf_get(ctx->in, "BANK", bank, sizeof(bank)) != TX_OK ||
        tx_buf_get(ctx->in, "ACCT", acct, sizeof(acct)) != TX_OK) {
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    tx_buf_getlong(ctx->in, "AMOUNT", &amount);

    if (amount <= 0 || strlen(acct) < 6) {
        tx_log(TX_LOG_WARN, "[ST_OL_0023] 이체 요청 검증 실패 amt=%ld acct=%s", amount, acct);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    snprintf(reqid, sizeof(reqid), "TR%s%03ld", bank, (long)(amount % 1000));

    /* 이체요청 큐 적재 (트랜잭션 경계) */
    strncpy(h_reqid, reqid, sizeof(h_reqid) - 1);  h_reqid[sizeof(h_reqid) - 1] = '\0';
    strncpy(h_merch, merch, sizeof(h_merch) - 1);  h_merch[sizeof(h_merch) - 1] = '\0';
    strncpy(h_bank, bank, sizeof(h_bank) - 1);     h_bank[sizeof(h_bank) - 1] = '\0';
    strncpy(h_acct, acct, sizeof(h_acct) - 1);     h_acct[sizeof(h_acct) - 1] = '\0';
    h_amount = amount;

    if (tx_begin() != TX_OK)
        tx_log(TX_LOG_WARN, "[ST_OL_0023] tx_begin 경고");

    EXEC SQL INSERT INTO st_transfer_req
            (req_id, merch_id, bank_code, acct_no, amount, xfer_state, reg_ts)
        VALUES
            (:h_reqid, :h_merch, :h_bank, :h_acct, :h_amount, 'REQUESTED', now());

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("INSERT st_transfer_req");
        tx_abort();
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        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_sets(ctx->out, "MERCHID", merch);
    tx_buf_sets(ctx->out, "BANK", bank);
    tx_buf_sets(ctx->out, "ACCT", acct);
    tx_buf_setlong(ctx->out, "AMOUNT", amount);
    tx_buf_sets(ctx->out, "REQID", reqid);
    tx_buf_sets(ctx->out, "XFERSTATE", "REQUESTED");
    tx_log(TX_LOG_INFO, "[ST_OL_0023] 이체요청 merch=%s amt=%ld reqid=%s",
           merch, amount, reqid);
    tx_return(ctx, TX_OK, ctx->out);
}