/* @tier easy @module st @transform settlement-online */
/*
 * st_ol_0012.pgc - 정산 보류/해제 처리 (ST_OL_0012)  [tier=easy]
 *
 * 정산 원장 건에 대해 지급 보류(HOLD) 또는 보류 해제(RELEASE)를 수행한다.
 * 보류는 상태 U, 해제는 상태 R 로 전이한다. 상태 전이는 원장(st_ledger)에
 * 직접 임베디드 UPDATE 로 반영하고, 반영 건수를 대조한다.
 */
#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_0012, ctx)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[16];
    char h_newst[2];
    char h_curst[2];
    long h_affected;
    EXEC SQL END DECLARE SECTION;

    st_rec_t rec;
    char key[16], action[12];
    const char *newst;
    int  rc;

    tx_log(TX_LOG_INFO, "[ST_OL_0012] 정산 보류/해제 진입");

    if (tx_buf_get(ctx->in, "KEY", key, sizeof(key)) != TX_OK ||
        tx_buf_get(ctx->in, "ACTION", action, sizeof(action)) != TX_OK) {
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    memset(&rec, 0, sizeof(rec));
    rc = st_rec_select(key, &rec);
    if (rc != TX_OK) {
        tx_return(ctx, rc, ctx->out);
        return;
    }

    if (strcmp(action, "HOLD") == 0) {
        newst = ST_ST_FAIL;             /* 보류 = U */
    } else if (strcmp(action, "RELEASE") == 0) {
        newst = ST_ST_RECV;             /* 해제 = R */
    } else {
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    /* 상태 전이 임베디드 UPDATE (현재 상태와 다를 때만) */
    strncpy(h_key, key, sizeof(h_key) - 1);       h_key[sizeof(h_key) - 1] = '\0';
    strncpy(h_newst, newst, sizeof(h_newst) - 1); h_newst[sizeof(h_newst) - 1] = '\0';
    strncpy(h_curst, rec.status, sizeof(h_curst) - 1); h_curst[sizeof(h_curst) - 1] = '\0';

    if (tx_begin() != TX_OK)
        tx_log(TX_LOG_WARN, "[ST_OL_0012] tx_begin 경고");

    EXEC SQL UPDATE st_ledger
        SET status = :h_newst, upd_ts = now()
        WHERE key = :h_key
          AND status <> :h_newst;

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("UPDATE st_ledger 보류/해제");
        tx_abort();
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }
    h_affected = sqlca.sqlerrd[2];
    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, "ACTION", action);
    tx_buf_sets(ctx->out, "PREVSTATUS", h_curst);
    tx_buf_sets(ctx->out, "STATUS", newst);
    tx_buf_setlong(ctx->out, "AFFECTED", (long)h_affected);
    tx_log(TX_LOG_INFO, "[ST_OL_0012] %s key=%s %s->%s 반영=%ld",
           action, key, h_curst, newst, (long)h_affected);
    tx_return(ctx, TX_OK, ctx->out);
}
