/* @tier medium @module vl @transform validation-online */
/*
 * vl_ol_0003.pgc - 매출 정합성 검증 서비스 (VL_OL_0003)  [tier=medium]
 *
 * 원장의 거래금액과 매출원천(매출액/승인액) 을 대사하여 정합/불일치를
 * 판정한다. 불일치 시 표준 에러코드(VL03xx) 를 응답에 실어 반환한다.
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

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

EXEC SQL INCLUDE sqlca;

TX_SERVICE(VL_OL_0003, ctx)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[16];
    long h_sale_amt;
    long h_appr_amt;
    EXEC SQL END DECLARE SECTION;

    vl_rec_t rec;
    char key[16];
    int  rc;
    long diff;

    tx_log(TX_LOG_INFO, "[VL_OL_0003] 매출 정합성 검증 서비스 진입");

    if (tx_buf_get(ctx->in, "KEY", key, sizeof(key)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[VL_OL_0003] KEY 누락");
        tx_buf_sets(ctx->out, "ERRCODE", "VL0300");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    memset(&rec, 0, sizeof(rec));
    rc = vl_rec_select(key, &rec);
    if (rc != TX_OK) {
        tx_log(TX_LOG_WARN, "[VL_OL_0003] 원장 조회 실패 key=%s rc=%d", key, rc);
        tx_buf_sets(ctx->out, "ERRCODE", "VL0301");
        tx_return(ctx, rc, ctx->out);
        return;
    }

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

    EXEC SQL
        SELECT sale_amount, approval_amount
          INTO :h_sale_amt, :h_appr_amt
          FROM vl_sale_source
         WHERE txn_key = :h_key;

    if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
        tx_log(TX_LOG_WARN, "[VL_OL_0003] 매출원천 없음 key=%s", key);
        tx_buf_sets(ctx->out, "RESULT", "MISMATCH");
        tx_buf_sets(ctx->out, "ERRCODE", "VL0302");
        tx_return(ctx, TX_ENOENT, ctx->out);
        return;
    }
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("SELECT vl_sale_source");
        tx_buf_sets(ctx->out, "ERRCODE", "VL0309");
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    diff = rec.amount - h_sale_amt;
    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "KEY", key);
    tx_buf_setlong(ctx->out, "LEDGERAMT", rec.amount);
    tx_buf_setlong(ctx->out, "SALEAMT", h_sale_amt);
    tx_buf_setlong(ctx->out, "APPRAMT", h_appr_amt);

    if (diff != 0) {
        tx_log(TX_LOG_WARN, "[VL_OL_0003] 매출 불일치 key=%s diff=%ld", key, diff);
        tx_buf_sets(ctx->out, "RESULT", "MISMATCH");
        tx_buf_sets(ctx->out, "ERRCODE", "VL0303");
        tx_buf_setlong(ctx->out, "DIFF", diff);
        tx_return(ctx, TX_OK, ctx->out);
        return;
    }

    tx_buf_sets(ctx->out, "RESULT", "MATCH");
    tx_buf_sets(ctx->out, "ERRCODE", RESP_OK);
    tx_log(TX_LOG_INFO, "[VL_OL_0003] 매출 정합 확인 key=%s amount=%ld", key, rec.amount);
    tx_return(ctx, TX_OK, ctx->out);
}
