/* @tier easy @module vl @transform validation-online */
/*
 * vl_ol_0014.pgc - 정산 정합 검증 서비스 (VL_OL_0014)
 *
 * 정산원장(vl_settle) 의 정산금액이 매입집계(vl_purchase_sum) 의 (매입액 - 수수료)
 * 와 일치하는지 대사한다. 정산금액이 계산된 순지급액과 다르면 불일치(VL14xx).
 */
#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_0014, ctx)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_settle_key[16];
    long h_settle_amt;
    long h_purchase_amt;
    long h_fee_amt;
    EXEC SQL END DECLARE SECTION;

    char key[16];
    long net_amt, diff;

    tx_log(TX_LOG_INFO, "[VL_OL_0014] 정산 정합 검증 서비스 진입");

    if (tx_buf_get(ctx->in, "KEY", key, sizeof(key)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[VL_OL_0014] KEY 누락");
        tx_buf_sets(ctx->out, "ERRCODE", "VL1400");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    strncpy(h_settle_key, key, sizeof(h_settle_key) - 1);
    h_settle_key[sizeof(h_settle_key) - 1] = '\0';
    h_settle_amt = 0; h_purchase_amt = 0; h_fee_amt = 0;

    /* 1) 정산금액 조회 */
    EXEC SQL
        SELECT settle_amount
          INTO :h_settle_amt
          FROM vl_settle
         WHERE settle_key = :h_settle_key;

    if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
        tx_log(TX_LOG_WARN, "[VL_OL_0014] 정산원장 없음 key=%s", key);
        tx_buf_sets(ctx->out, "RESULT", "MISMATCH");
        tx_buf_sets(ctx->out, "ERRCODE", "VL1401");
        tx_return(ctx, TX_ENOENT, ctx->out);
        return;
    }
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("SELECT vl_settle");
        tx_buf_sets(ctx->out, "ERRCODE", "VL1409");
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    /* 2) 매입집계(매입액/수수료) 조회 */
    EXEC SQL
        SELECT COALESCE(purchase_amount, 0), COALESCE(fee_amount, 0)
          INTO :h_purchase_amt, :h_fee_amt
          FROM vl_purchase_sum
         WHERE settle_key = :h_settle_key;

    if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
        tx_log(TX_LOG_WARN, "[VL_OL_0014] 매입집계 없음 key=%s", key);
        tx_buf_sets(ctx->out, "RESULT", "MISMATCH");
        tx_buf_sets(ctx->out, "ERRCODE", "VL1402");
        tx_return(ctx, TX_ENOENT, ctx->out);
        return;
    }
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("SELECT vl_purchase_sum");
        tx_buf_sets(ctx->out, "ERRCODE", "VL1419");
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    /* 3) 순지급액 대사 */
    net_amt = h_purchase_amt - h_fee_amt;
    diff = h_settle_amt - net_amt;

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "KEY", key);
    tx_buf_setlong(ctx->out, "SETTLEAMT", h_settle_amt);
    tx_buf_setlong(ctx->out, "PURCHASEAMT", h_purchase_amt);
    tx_buf_setlong(ctx->out, "FEEAMT", h_fee_amt);
    tx_buf_setlong(ctx->out, "NETAMT", net_amt);
    tx_buf_setlong(ctx->out, "DIFF", diff);

    if (diff != 0) {
        tx_log(TX_LOG_WARN, "[VL_OL_0014] 정산 불일치 key=%s settle=%ld net=%ld",
               key, h_settle_amt, net_amt);
        tx_buf_sets(ctx->out, "RESULT", "MISMATCH");
        tx_buf_sets(ctx->out, "ERRCODE", "VL1403");
        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_0014] 정산 정합 key=%s settle=%ld", key, h_settle_amt);
    tx_return(ctx, TX_OK, ctx->out);
}
