/* @tier easy @module cl @transform closing-online */
/*
 * cl_ol_0002.pgc - 마감 온라인 서비스 (CL_OL_0002)  [tier=easy]
 *
 * 일마감(日마감) 요청. 요청 영업일(BIZDATE)에 대해 아직 마감되지 않은
 * 접수(R) 건이 남아 있는지 먼저 확인하고, 남아있지 않으면 처리완료(M)/
 * 불일치(U) 건을 정산완료(S)로 일괄 마감한다. 마감건수와 마감금액 합계를
 * 응답한다. (직접 EXEC SQL 로 집계/일괄 UPDATE 수행)
 */
#include <stdio.h>
#include <string.h>

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

EXEC SQL INCLUDE sqlca;

TX_SERVICE(CL_OL_0002, ctx)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9];
    int  h_recv_cnt;
    long h_settle_sum;
    EXEC SQL END DECLARE SECTION;

    char bizdate[16];
    long closed_cnt = 0;
    char won[40];

    tx_log(TX_LOG_INFO, "[CL_OL_0002] 일마감 요청 서비스 진입");

    /* 1. 요청 검증 : 영업일 필수 및 형식 */
    if (tx_buf_get(ctx->in, "BIZDATE", bizdate, sizeof(bizdate)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[CL_OL_0002] BIZDATE 누락");
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    if (!date_is_valid(bizdate)) {
        tx_log(TX_LOG_WARN, "[CL_OL_0002] 영업일 형식 오류 date=%s", bizdate);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    strncpy(h_biz_date, bizdate, sizeof(h_biz_date) - 1);
    h_biz_date[sizeof(h_biz_date) - 1] = '\0';

    /* 2. 선행검사 : 미마감(R) 접수건 잔존여부 확인 */
    EXEC SQL SELECT count(*)
        INTO :h_recv_cnt
        FROM cl_ledger
        WHERE biz_date = :h_biz_date
          AND status   = 'R';
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("CL_OL_0002 recv count");
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }
    if (h_recv_cnt > 0) {
        tx_log(TX_LOG_WARN, "[CL_OL_0002] 미마감 접수건 잔존 date=%s cnt=%d",
               bizdate, h_recv_cnt);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_buf_sets(ctx->out, "BIZDATE", bizdate);
        tx_buf_setlong(ctx->out, "RECVCNT", (long)h_recv_cnt);
        tx_buf_sets(ctx->out, "MESSAGE", "미마감 접수건 잔존으로 일마감 불가");
        tx_return(ctx, TX_FAIL, ctx->out);
        return;
    }

    /* 3. 마감 트랜잭션 : M/U 건을 S 로 일괄 확정 */
    if (tx_begin() != TX_OK) {
        tx_log(TX_LOG_ERROR, "[CL_OL_0002] 트랜잭션 시작 실패");
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_FAIL, ctx->out);
        return;
    }

    EXEC SQL UPDATE cl_ledger
        SET status = 'S', upd_ts = now()
        WHERE biz_date = :h_biz_date
          AND status IN ('M', 'U');
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("CL_OL_0002 settle update");
        tx_abort();
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }
    closed_cnt = (long)sqlca.sqlerrd[2];

    /* 4. 마감금액 합계 재집계 (S 확정분) */
    EXEC SQL SELECT coalesce(sum(amount), 0)
        INTO :h_settle_sum
        FROM cl_ledger
        WHERE biz_date = :h_biz_date
          AND status   = 'S';
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("CL_OL_0002 settle sum");
        tx_abort();
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    tx_commit();

    /* 5. 응답 구성 */
    amount_format_won(h_settle_sum, won, sizeof(won));
    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "RESPCODE", RESP_OK);
    tx_buf_sets(ctx->out, "BIZDATE", bizdate);
    tx_buf_setlong(ctx->out, "CLOSECNT", closed_cnt);
    tx_buf_setlong(ctx->out, "SETTLESUM", h_settle_sum);
    tx_buf_sets(ctx->out, "SETTLEWON", won);
    tx_log(TX_LOG_INFO, "[CL_OL_0002] 일마감 완료 date=%s 건수=%ld 합계=%ld",
           bizdate, closed_cnt, h_settle_sum);
    tx_return(ctx, TX_OK, ctx->out);
}