/* @tier easy @module py @transform payment-online */
/*
 * py_ol_0007.pgc - 지급 상태조회(상태/이체가능액) (PY_OL_0007)  [tier=easy]
 *
 * 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 "py_core.h"

EXEC SQL INCLUDE sqlca;

TX_SERVICE(PY_OL_0007, ctx)
{
    char key[16];
    if (tx_buf_get(ctx->in, "KEY", key, sizeof(key)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[PY_OL_0007] KEY 누락");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[16], h_status[2], h_acct[20];
    long h_amount, h_fee;
    EXEC SQL END DECLARE SECTION;

    const char *label;

    tx_log(TX_LOG_INFO, "[PY_OL_0007] 지급 상태조회 진입");
    strncpy(h_key, key, 15); h_key[15] = '\0';

    EXEC SQL SELECT amount, fee, status, card_no
        INTO :h_amount, :h_fee, :h_status, :h_acct
        FROM py_ledger WHERE key = :h_key;
    if (sqlca.sqlcode == TX_SQL_NOTFOUND) { tx_return(ctx, TX_ENOENT, ctx->out); return; }
    if (sqlca.sqlcode != TX_SQL_OK) { TX_DBIO_LOG_ERR("py_ol_0007"); tx_return(ctx, TX_EDB, ctx->out); return; }

    switch (h_status[0]) {
        case 'R': label = "지급대기"; break;
        case 'M': label = "지급확정"; break;
        case 'U': label = "보류/취소"; break;
        case 'S': label = "이체완료"; break;
        default:  label = "미상";     break;
    }

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "KEY", key);
    tx_buf_sets(ctx->out, "STATUS", h_status);
    tx_buf_sets(ctx->out, "STATUSLBL", label);
    tx_buf_setlong(ctx->out, "PAYABLE", h_amount - h_fee);
    tx_log(TX_LOG_INFO, "[PY_OL_0007] 상태 key=%s status=%s payable=%ld",
           key, h_status, h_amount - h_fee);
    tx_return(ctx, TX_OK, ctx->out);
}