/* @tier easy @module lg @transform ledger-online */
/*
 * lg_ol_0017.pgc - 원장 온라인 서비스 (LG_OL_0017)  [tier=easy]
 *
 * 가맹점 매출 일괄반영: 특정 가맹점의 접수(R) 상태 전표를 커서로 순회하며
 * 각 건을 처리완료(M) 상태로 UPDATE 하고, 반영 건수와 합계금액을 응답한다.
 */
#include <stdio.h>
#include <string.h>

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

EXEC SQL INCLUDE sqlca;

TX_SERVICE(LG_OL_0017, ctx)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_merch_id[16];
    char h_status_r[2];
    char h_status_m[2];
    char h_key[16];
    long h_amount;
    EXEC SQL END DECLARE SECTION;

    char merch[16];
    long total = 0;
    long applied = 0;

    tx_log(TX_LOG_INFO, "[LG_OL_0017] 가맹점 매출 일괄반영 진입");

    if (tx_buf_get(ctx->in, "MERCHID", merch, sizeof(merch)) != TX_OK ||
        merch[0] == '\0') {
        tx_log(TX_LOG_ERROR, "[LG_OL_0017] MERCHID 누락");
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    strncpy(h_merch_id, merch, sizeof(h_merch_id) - 1);
    h_merch_id[sizeof(h_merch_id) - 1] = '\0';
    strncpy(h_status_r, LG_ST_RECV, sizeof(h_status_r) - 1);
    h_status_r[sizeof(h_status_r) - 1] = '\0';
    strncpy(h_status_m, LG_ST_DONE, sizeof(h_status_m) - 1);
    h_status_m[sizeof(h_status_m) - 1] = '\0';

    if (tx_begin() != TX_OK) {
        tx_log(TX_LOG_ERROR, "[LG_OL_0017] 트랜잭션 시작 실패");
        tx_return(ctx, TX_FAIL, ctx->out);
        return;
    }

    EXEC SQL DECLARE cur_lg_ol_0017 CURSOR FOR
        SELECT key, amount
          FROM lg_ledger
         WHERE merch_id = :h_merch_id
           AND status   = :h_status_r
         ORDER BY key;

    EXEC SQL OPEN cur_lg_ol_0017;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("cur_lg_ol_0017 open");
        tx_abort();
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    for (;;) {
        EXEC SQL FETCH cur_lg_ol_0017 INTO :h_key, :h_amount;
        if (sqlca.sqlcode == TX_SQL_NOTFOUND)
            break;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("cur_lg_ol_0017 fetch");
            EXEC SQL CLOSE cur_lg_ol_0017;
            tx_abort();
            tx_buf_reset(ctx->out);
            tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
            tx_return(ctx, TX_EDB, ctx->out);
            return;
        }

        EXEC SQL UPDATE lg_ledger
            SET status = :h_status_m, upd_ts = now()
            WHERE key = :h_key;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("cur_lg_ol_0017 update");
            EXEC SQL CLOSE cur_lg_ol_0017;
            tx_abort();
            tx_buf_reset(ctx->out);
            tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
            tx_return(ctx, TX_EDB, ctx->out);
            return;
        }
        applied += 1;
        total   += h_amount;
        tx_log(TX_LOG_DEBUG, "[LG_OL_0017] 반영 key=%s amount=%ld", h_key, h_amount);
    }

    EXEC SQL CLOSE cur_lg_ol_0017;

    if (tx_commit() != TX_OK) {
        tx_log(TX_LOG_ERROR, "[LG_OL_0017] 커밋 실패");
        tx_abort();
        tx_return(ctx, TX_FAIL, ctx->out);
        return;
    }

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "RESPCODE", RESP_OK);
    tx_buf_sets(ctx->out, "MERCHID", merch);
    tx_buf_setlong(ctx->out, "CNT", applied);
    tx_buf_setlong(ctx->out, "SUMAMT", total);
    tx_log(TX_LOG_INFO, "[LG_OL_0017] 일괄반영 완료 merch=%s 건수=%ld 합계=%ld",
           merch, applied, total);
    tx_return(ctx, TX_OK, ctx->out);
}
