/* @tier hard @module vl @transform validation-online */
/*
 * vl_ol_0024.pgc - 승인번호 정합 서비스 (VL_OL_0024)  [tier=hard]
 *
 * 입력 승인번호의 형식(9자리 숫자) 을 검증한 뒤, 승인원장(vl_approval)
 * 에 실제 등록되어 있는지 조회하여 정합 여부를 판정한다.
 */
#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;

#define VL0024_APPR_LEN  9

/* 9자리 전부 숫자인지 검사 (형식검증) */
static int vl0024_is_appr_format(const char *s)
{
    int i;
    if (s == NULL) {
        return 0;
    }
    if ((int)strlen(s) != VL0024_APPR_LEN) {
        return 0;
    }
    for (i = 0; i < VL0024_APPR_LEN; i++) {
        if (s[i] < '0' || s[i] > '9') {
            return 0;
        }
    }
    return 1;
}

TX_SERVICE(VL_OL_0024, ctx)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_appr[10];
    char h_merch[16];
    long h_amount;
    char h_appr_date[9];
    EXEC SQL END DECLARE SECTION;

    char appr[16];

    tx_log(TX_LOG_INFO, "[VL_OL_0024] 승인번호 정합 서비스 진입");

    if (tx_buf_get(ctx->in, "APPRNO", appr, sizeof(appr)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[VL_OL_0024] 승인번호(APPRNO) 누락");
        tx_buf_sets(ctx->out, "ERRCODE", "VL2400");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    if (!vl0024_is_appr_format(appr)) {
        tx_log(TX_LOG_WARN, "[VL_OL_0024] 승인번호 형식 오류 appr=%s", appr);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "APPRNO", appr);
        tx_buf_sets(ctx->out, "RESULT", "BADFORMAT");
        tx_buf_sets(ctx->out, "ERRCODE", "VL2401");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    strncpy(h_appr, appr, sizeof(h_appr) - 1);
    h_appr[sizeof(h_appr) - 1] = '\0';

    memset(h_merch, 0, sizeof(h_merch));
    memset(h_appr_date, 0, sizeof(h_appr_date));
    h_amount = 0;

    EXEC SQL SELECT merch_id, appr_amount, appr_date
          INTO :h_merch, :h_amount, :h_appr_date
          FROM vl_approval
         WHERE approval_no = :h_appr;

    if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
        tx_log(TX_LOG_WARN, "[VL_OL_0024] 승인원장 미등록 appr=%s", appr);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "APPRNO", appr);
        tx_buf_sets(ctx->out, "RESULT", "NOTFOUND");
        tx_buf_sets(ctx->out, "ERRCODE", "VL2402");
        tx_return(ctx, TX_ENOENT, ctx->out);
        return;
    }
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("SELECT vl_approval");
        tx_buf_sets(ctx->out, "ERRCODE", "VL2409");
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "APPRNO", appr);
    tx_buf_sets(ctx->out, "MERCHID", h_merch);
    tx_buf_setlong(ctx->out, "APPRAMT", h_amount);
    tx_buf_sets(ctx->out, "APPRDATE", h_appr_date);
    tx_buf_sets(ctx->out, "RESULT", "VALID");
    tx_buf_sets(ctx->out, "ERRCODE", RESP_OK);

    tx_log(TX_LOG_INFO, "[VL_OL_0024] 승인번호 정합 appr=%s merch=%s amt=%ld",
           appr, h_merch, h_amount);
    tx_return(ctx, TX_OK, ctx->out);
}