/* @tier easy @module lg @transform ledger-batch */
/*
 * lg_bt_0008.pgc - 원장 통계 배치 (상태별 건수/금액 집계)
 *
 * 지정 영업일 원장의 상태별(R/M/U/S) 건수와 금액 합계를 각각 집계하여
 * 통계표를 출력한다. 순수 읽기 전용 집계 배치.
 *
 * 실행:  lg_bt_0008 <YYYYMMDD> [db@host]
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

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

EXEC SQL INCLUDE sqlca;

static int stat_one(const char *biz_date, const char *status,
                    long *out_cnt, long *out_sum)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9];
    char h_status[2];
    long h_cnt;
    long h_sum;
    EXEC SQL END DECLARE SECTION;

    strncpy(h_biz_date, biz_date, sizeof(h_biz_date) - 1);
    h_biz_date[sizeof(h_biz_date) - 1] = '\0';
    strncpy(h_status, status, sizeof(h_status) - 1);
    h_status[sizeof(h_status) - 1] = '\0';

    EXEC SQL SELECT count(*), coalesce(sum(amount), 0)
        INTO :h_cnt, :h_sum
        FROM lg_ledger
        WHERE biz_date = :h_biz_date
          AND status   = :h_status;

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("stat_one");
        return TX_EDB;
    }
    *out_cnt = h_cnt;
    *out_sum = h_sum;
    return TX_OK;
}

static int run_lg_bt_0008(const char *biz_date)
{
    struct { const char *code; const char *label; } row[4] = {
        { LG_ST_RECV,    "접수(R)  " },
        { LG_ST_DONE,    "완료(M)  " },
        { LG_ST_FAIL,    "불일치(U)" },
        { LG_ST_SETTLED, "정산(S)  " },
    };
    long cnt = 0, sum = 0, tot_cnt = 0, tot_sum = 0;
    char won[32];
    int  i, rc;

    printf("========== 원장 통계 [lg_bt_0008] date=%s ==========\n", biz_date);
    printf("  %-10s %10s %18s\n", "상태", "건수", "금액합계");

    for (i = 0; i < 4; i++) {
        rc = stat_one(biz_date, row[i].code, &cnt, &sum);
        if (rc != TX_OK)
            return rc;
        amount_format_won(sum, won, sizeof(won));
        printf("  %-10s %10ld %18s\n", row[i].label, cnt, won);
        tot_cnt += cnt;
        tot_sum += sum;
    }

    amount_format_won(tot_sum, won, sizeof(won));
    printf("------------------------------------------------------\n");
    printf("  %-10s %10ld %18s\n", "합계", tot_cnt, won);
    printf("======================================================\n");

    tx_log(TX_LOG_INFO, "[lg_bt_0008] 통계 date=%s 총건수=%ld 총금액=%ld",
           biz_date, tot_cnt, tot_sum);
    return TX_OK;
}

int main(int argc, char **argv)
{
    const char *biz_date;
    const char *target;
    int rc;

    tx_set_loglevel(TX_LOG_INFO);

    if (argc < 2) {
        fprintf(stderr, "사용법: %s <YYYYMMDD> [db@host]\n", argv[0]);
        return 2;
    }
    biz_date = argv[1];
    target   = (argc >= 3) ? argv[2] : NULL;

    if (!date_is_valid(biz_date)) {
        fprintf(stderr, "오류: 유효하지 않은 영업일 '%s'\n", biz_date);
        return 2;
    }

    tx_log(TX_LOG_INFO, "[lg_bt_0008] 통계 배치 시작 date=%s", biz_date);

    rc = lg_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[lg_bt_0008] DB 접속 실패 rc=%d", rc);
        return 1;
    }

    rc = run_lg_bt_0008(biz_date);

    lg_dbio_disconnect();

    tx_log(TX_LOG_INFO, "[lg_bt_0008] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}