/* @tier easy @module mm @transform master-online */
/*
 * mm_ol_0028.pgc - 가맹점 대표자변경 서비스 (MM_OL_0028)  [tier=easy]
 *
 * 대표자명(필수)과 생년월일(YYYYMMDD, 일자 유효성)을 검증한 뒤
 * mm_merchant 의 대표자 정보(owner_nm/owner_birth)를 UPDATE 하고,
 * 변경이력(mm_merchant_hist)에 유형 'U'(대표자) 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_0028, ctx)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_merch_id[16];
    char h_owner_nm[32];
    char h_owner_birth[9];
    char h_old_owner[32];
    char h_chg_date[9];
    EXEC SQL END DECLARE SECTION;

    char merch_id[16];
    char owner_nm[32];
    char owner_birth[9];

    tx_log(TX_LOG_INFO, "[MM_OL_0028] 가맹점 대표자변경 서비스 진입");

    if (tx_buf_get(ctx->in, "MERCHID", merch_id, sizeof(merch_id)) != TX_OK ||
        tx_buf_get(ctx->in, "OWNERNM", owner_nm, sizeof(owner_nm)) != TX_OK ||
        tx_buf_get(ctx->in, "BIRTH",   owner_birth, sizeof(owner_birth)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[MM_OL_0028] 필수 필드 누락");
        tx_buf_sets(ctx->out, "ERRCODE", "MM2800");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    if (strlen(owner_nm) == 0) {
        tx_log(TX_LOG_WARN, "[MM_OL_0028] 대표자명 공백");
        tx_buf_sets(ctx->out, "ERRCODE", "MM2801");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    if (!date_is_valid(owner_birth)) {
        tx_log(TX_LOG_WARN, "[MM_OL_0028] 생년월일 오류 birth=%s", owner_birth);
        tx_buf_sets(ctx->out, "ERRCODE", "MM2802");
        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_owner_nm, owner_nm, sizeof(h_owner_nm) - 1);
    h_owner_nm[sizeof(h_owner_nm) - 1] = '\0';
    strncpy(h_owner_birth, owner_birth, sizeof(h_owner_birth) - 1);
    h_owner_birth[sizeof(h_owner_birth) - 1] = '\0';
    date_today(h_chg_date);

    /* 현재 대표자(이력 참고용) 조회 겸 존재 확인 */
    EXEC SQL
        SELECT owner_nm INTO :h_old_owner
          FROM mm_merchant
         WHERE merch_id = :h_merch_id;

    if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
        tx_log(TX_LOG_WARN, "[MM_OL_0028] 가맹점 없음 merch=%s", merch_id);
        tx_buf_sets(ctx->out, "ERRCODE", RESP_NOMERCH);
        tx_return(ctx, TX_ENOENT, ctx->out);
        return;
    }
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("SELECT mm_merchant owner");
        tx_buf_sets(ctx->out, "ERRCODE", "MM2809");
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    if (tx_begin() != TX_OK)
        tx_log(TX_LOG_WARN, "[MM_OL_0028] tx_begin 경고");

    EXEC SQL
        UPDATE mm_merchant
           SET owner_nm    = :h_owner_nm,
               owner_birth = :h_owner_birth,
               upd_date    = :h_chg_date
         WHERE merch_id = :h_merch_id;

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("UPDATE mm_merchant owner");
        tx_abort();
        tx_buf_sets(ctx->out, "ERRCODE", "MM2803");
        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, 'U', :h_chg_date, 'M');

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("INSERT mm_merchant_hist owner");
        tx_abort();
        tx_buf_sets(ctx->out, "ERRCODE", "MM2804");
        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, "OLDOWNER", h_old_owner);
    tx_buf_sets(ctx->out, "OWNERNM", h_owner_nm);
    tx_buf_sets(ctx->out, "CHGDATE", h_chg_date);
    tx_buf_sets(ctx->out, "ERRCODE", RESP_OK);
    tx_log(TX_LOG_INFO, "[MM_OL_0028] 대표자변경 완료 merch=%s %s->%s",
           merch_id, h_old_owner, h_owner_nm);
    tx_return(ctx, TX_OK, ctx->out);
}