/* @tier easy @module mg @transform msg-gateway-online */
/*
 * mg_ol_0003.pgc - 그리드↔구조체 매핑 서비스 (MG_OL_0003)  [tier=easy]
 *
 * 채널이 올린 입력 그리드(FLDCNT 개의 FLD0..FLDn)를 정해진 컬럼 순서
 * 규약에 따라 mg_rec_t 원장 레코드로 매핑한다. 필드 개수/순서/필수값을
 * 검증하고 매핑 결과를 tx_buf 로 응답한다.
 */
#include <stdio.h>
#include <string.h>

#include "txcore.h"
#include "acq_util.h"
#include "mg_core.h"

EXEC SQL INCLUDE sqlca;

/* 그리드 컬럼 순서 규약: 0=처리키 1=가맹점 2=카드 3=금액 4=영업일 */
#define MG3_COL_KEY      0
#define MG3_COL_MERCH    1
#define MG3_COL_CARD     2
#define MG3_COL_AMOUNT   3
#define MG3_COL_BIZDATE  4
#define MG3_COL_REQUIRED 5

TX_SERVICE(MG_OL_0003, ctx)
{
    char     fldkey[16];
    char     cell[64];
    mg_rec_t rec;
    long     fldcnt = 0;
    long     amount;
    int      i;

    tx_log(TX_LOG_INFO, "[MG_OL_0003] 그리드 매핑 서비스 진입");

    /* 1) 그리드 필드 개수 확인 */
    if (tx_buf_getlong(ctx->in, "FLDCNT", &fldcnt) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[MG_OL_0003] 필드개수(FLDCNT) 누락");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    if (fldcnt < MG3_COL_REQUIRED) {
        tx_log(TX_LOG_WARN, "[MG_OL_0003] 필수 컬럼 부족 fldcnt=%ld(min=%d)",
               fldcnt, MG3_COL_REQUIRED);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESP", RESP_INVALID);
        tx_buf_setlong(ctx->out, "FLDCNT", fldcnt);
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    /* 2) 순서대로 셀을 뽑아 구조체 슬롯에 매핑 */
    memset(&rec, 0, sizeof(rec));
    amount = 0;
    for (i = 0; i < MG3_COL_REQUIRED; i++) {
        snprintf(fldkey, sizeof(fldkey), "FLD%d", i);
        if (tx_buf_get(ctx->in, fldkey, cell, sizeof(cell)) != TX_OK || cell[0] == '\0') {
            tx_log(TX_LOG_WARN, "[MG_OL_0003] 그리드 셀 누락/공백 col=%d key=%s", i, fldkey);
            tx_buf_reset(ctx->out);
            tx_buf_sets(ctx->out, "RESP", RESP_INVALID);
            tx_buf_setlong(ctx->out, "BADCOL", (long)i);
            tx_return(ctx, TX_EINVAL, ctx->out);
            return;
        }

        switch (i) {
        case MG3_COL_KEY:
            strncpy(rec.key, cell, sizeof(rec.key) - 1);
            break;
        case MG3_COL_MERCH:
            strncpy(rec.merch_id, cell, sizeof(rec.merch_id) - 1);
            break;
        case MG3_COL_CARD:
            strncpy(rec.card_no, cell, sizeof(rec.card_no) - 1);
            break;
        case MG3_COL_AMOUNT:
            amount = amount_parse(cell, (int)strlen(cell));
            break;
        case MG3_COL_BIZDATE:
            strncpy(rec.biz_date, cell, sizeof(rec.biz_date) - 1);
            break;
        default:
            break;
        }
    }
    rec.amount = amount;
    rec.fee    = 0;
    strncpy(rec.status, MG_ST_RECV, sizeof(rec.status) - 1);

    /* 3) 매핑 후 도메인 검증 */
    if (!amount_is_valid(rec.amount) || !date_is_valid(rec.biz_date)) {
        tx_log(TX_LOG_WARN, "[MG_OL_0003] 매핑값 검증 실패 amount=%ld date=%s",
               rec.amount, rec.biz_date);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESP", RESP_INVALID);
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    /* 4) 매핑 결과 응답 (원장 적재는 별도 서비스 담당) */
    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "RESP", RESP_OK);
    tx_buf_sets(ctx->out, "KEY", rec.key);
    tx_buf_sets(ctx->out, "MERCHID", rec.merch_id);
    tx_buf_sets(ctx->out, "CARDNO", rec.card_no);
    tx_buf_setlong(ctx->out, "AMOUNT", rec.amount);
    tx_buf_sets(ctx->out, "BIZDATE", rec.biz_date);
    tx_buf_setlong(ctx->out, "MAPPED", (long)MG3_COL_REQUIRED);
    tx_log(TX_LOG_INFO, "[MG_OL_0003] 그리드 매핑완료 key=%s cols=%d amount=%ld",
           rec.key, MG3_COL_REQUIRED, rec.amount);
    tx_return(ctx, TX_OK, ctx->out);
}