/* @tier medium @module mm @transform master-online */
/*
 * mm_ol_0027.pgc - 가맹점 연락처변경 서비스 (MM_OL_0027)  [tier=medium]
 *
 * 전화번호(숫자·하이픈)와 이메일('@'·'.' 포함) 형식을 검증한 뒤
 * mm_merchant 의 연락처(tel_no/email)를 UPDATE 하고, 변경이력
 * (mm_merchant_hist)에 유형 'C'(연락처) 행을 남긴다. (CRUD + 이력)
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

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

EXEC SQL INCLUDE sqlca;

TX_SERVICE(MM_OL_0027, ctx)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_merch_id[16];
    char h_tel_no[20];
    char h_email[64];
    char h_chg_date[9];
    long h_exist;
    EXEC SQL END DECLARE SECTION;

    char merch_id[16];
    char tel_no[20];
    char email[64];
    int  i, at = 0, dot = 0, len;

    tx_log(TX_LOG_INFO, "[MM_OL_0027] 가맹점 연락처변경 서비스 진입");

    if (tx_buf_get(ctx->in, "MERCHID", merch_id, sizeof(merch_id)) != TX_OK ||
        tx_buf_get(ctx->in, "TELNO",   tel_no,   sizeof(tel_no))   != TX_OK ||
        tx_buf_get(ctx->in, "EMAIL",   email,    sizeof(email))    != TX_OK) {
        tx_log(TX_LOG_ERROR, "[MM_OL_0027] 필수 필드 누락");
        tx_buf_sets(ctx->out, "ERRCODE", "MM2700");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    /* 전화번호 형식: 숫자와 '-' 만, 길이 9~13 */
    len = (int)strlen(tel_no);
    if (len < 9 || len > 13) {
        tx_log(TX_LOG_WARN, "[MM_OL_0027] 전화번호 길이 오류 tel=%s", tel_no);
        tx_buf_sets(ctx->out, "ERRCODE", "MM2701");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    for (i = 0; i < len; i++) {
        if (tel_no[i] != '-' && (tel_no[i] < '0' || tel_no[i] > '9')) {
            tx_log(TX_LOG_WARN, "[MM_OL_0027] 전화번호 형식 오류 tel=%s", tel_no);
            tx_buf_sets(ctx->out, "ERRCODE", "MM2701");
            tx_return(ctx, TX_EINVAL, ctx->out);
            return;
        }
    }

    /* 이메일 형식: '@' 1개 이상, '@' 뒤에 '.' 존재 */
    len = (int)strlen(email);
    for (i = 0; i < len; i++) {
        if (email[i] == '@') at = i;
        else if (email[i] == '.' && at > 0) dot = i;
    }
    if (at <= 0 || dot <= at || dot == len - 1) {
        tx_log(TX_LOG_WARN, "[MM_OL_0027] 이메일 형식 오류 email=%s", email);
        tx_buf_sets(ctx->out, "ERRCODE", "MM2702");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    strncpy(h_merch_id, merch_id, sizeof(h_merch_id) - 1);
    h_merch_id[sizeof(h_merch_id) - 1] = '\0';
    strncpy(h_tel_no, tel_no, sizeof(h_tel_no) - 1);
    h_tel_no[sizeof(h_tel_no) - 1] = '\0';
    strncpy(h_email, email, sizeof(h_email) - 1);
    h_email[sizeof(h_email) - 1] = '\0';
    date_today(h_chg_date);

    /* 가맹점 존재 확인 */
    EXEC SQL
        SELECT COUNT(*) INTO :h_exist
          FROM mm_merchant
         WHERE merch_id = :h_merch_id;

    if (sqlca.sqlcode != TX_SQL_OK && sqlca.sqlcode != TX_SQL_NOTFOUND) {
        TX_DBIO_LOG_ERR("SELECT mm_merchant exist");
        tx_buf_sets(ctx->out, "ERRCODE", "MM2709");
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }
    if (h_exist <= 0) {
        tx_log(TX_LOG_WARN, "[MM_OL_0027] 가맹점 없음 merch=%s", merch_id);
        tx_buf_sets(ctx->out, "ERRCODE", RESP_NOMERCH);
        tx_return(ctx, TX_ENOENT, ctx->out);
        return;
    }

    if (tx_begin() != TX_OK)
        tx_log(TX_LOG_WARN, "[MM_OL_0027] tx_begin 경고");

    EXEC SQL
        UPDATE mm_merchant
           SET tel_no = :h_tel_no,
               email  = :h_email,
               upd_date = :h_chg_date
         WHERE merch_id = :h_merch_id;

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("UPDATE mm_merchant contact");
        tx_abort();
        tx_buf_sets(ctx->out, "ERRCODE", "MM2703");
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    EXEC SQL
        INSERT INTO mm_merchant_hist (merch_id, chg_type, chg_date, chg_status)
        VALUES (:h_merch_id, 'C', :h_chg_date, 'M');

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("INSERT mm_merchant_hist contact");
        tx_abort();
        tx_buf_sets(ctx->out, "ERRCODE", "MM2704");
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    tx_commit();

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "MERCHID", merch_id);
    tx_buf_sets(ctx->out, "TELNO", h_tel_no);
    tx_buf_sets(ctx->out, "EMAIL", h_email);
    tx_buf_sets(ctx->out, "CHGDATE", h_chg_date);
    tx_buf_sets(ctx->out, "ERRCODE", RESP_OK);
    tx_log(TX_LOG_INFO, "[MM_OL_0027] 연락처변경 완료 merch=%s", merch_id);
    tx_return(ctx, TX_OK, ctx->out);
}
