/* @tier medium @module vl @transform validation-batch */
/*
 * vl_bt_0009.pgc - 수수료 정합검증 배치 (VL_BT_0009)  [tier=medium]
 *
 * 지정 영업일 원장(vl_ledger) 을 수수료율원장(vl_fee_rate) 과 조인하여
 * 계산수수료(amount * fee_rate / 10000) 와 원장 수수료(fee) 를 대사한다.
 * 반올림 오차(1원) 를 초과하면 불일치('U'), 이내면 완료('M') 로 전이한다.
 * 배치 main 엔트리 포함.
 *
 * 실행:  vl_bt_0009 <YYYYMMDD> [db@host]
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

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

EXEC SQL INCLUDE sqlca;

#define VL_BT_0009_ROUND_TOL  1L   /* 반올림 허용오차: 1원 */

static int run_vl_bt_0009(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9];
    char h_key[16];
    long h_amount;
    long h_fee;
    long h_fee_rate;   /* bp(만분율): 예) 250 = 2.5% */
    char h_new_status[2];
    EXEC SQL END DECLARE SECTION;

    long total = 0, matched = 0, mismatch = 0, errcnt = 0;
    long calc_fee, diff, diff_sum = 0;
    int  rc;

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

    EXEC SQL DECLARE cur_vl_bt_0009 CURSOR FOR
        SELECT l.key, l.amount, l.fee, r.fee_rate
        FROM vl_ledger l
        JOIN vl_fee_rate r ON r.merch_id = l.merch_id
        WHERE l.biz_date = :h_biz_date
          AND l.status   = 'R'
        ORDER BY l.key;

    EXEC SQL OPEN cur_vl_bt_0009;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("OPEN cur_vl_bt_0009");
        return TX_EDB;
    }

    if (tx_begin() != TX_OK)
        tx_log(TX_LOG_WARN, "[vl_bt_0009] tx_begin 경고");

    for (;;) {
        EXEC SQL FETCH cur_vl_bt_0009
            INTO :h_key, :h_amount, :h_fee, :h_fee_rate;

        if (sqlca.sqlcode == TX_SQL_NOTFOUND)
            break;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("FETCH cur_vl_bt_0009");
            errcnt++;
            break;
        }

        total++;

        /* 계산수수료 = 거래금액 * 요율(bp) / 10000, 반올림 */
        calc_fee = (h_amount * h_fee_rate + 5000L) / 10000L;
        diff = labs(calc_fee - h_fee);

        if (diff <= VL_BT_0009_ROUND_TOL) {
            strncpy(h_new_status, VL_ST_DONE, sizeof(h_new_status));
            matched++;
        } else {
            strncpy(h_new_status, VL_ST_FAIL, sizeof(h_new_status));
            mismatch++;
            diff_sum += diff;
            tx_log(TX_LOG_WARN,
                   "[vl_bt_0009] 수수료불일치 key=%s 계산=%ld 원장=%ld rate=%ld",
                   h_key, calc_fee, h_fee, h_fee_rate);
        }

        rc = vl_rec_update_status(h_key, h_new_status);
        if (rc != TX_OK) {
            tx_log(TX_LOG_ERROR, "[vl_bt_0009] 상태전이 실패 key=%s rc=%d", h_key, rc);
            errcnt++;
        }
    }

    EXEC SQL CLOSE cur_vl_bt_0009;

    if (errcnt == 0)
        tx_commit();
    else
        tx_abort();

    tx_log(TX_LOG_INFO,
           "[vl_bt_0009] 요약 date=%s 대상=%ld 정합=%ld 불일치=%ld 오류=%ld",
           biz_date, total, matched, mismatch, errcnt);

    printf("========== 수수료 정합검증 [vl_bt_0009] ==========\n");
    printf("  영업일        : %s\n", biz_date);
    printf("  대상 건수     : %ld\n", total);
    printf("  정합(M)       : %ld\n", matched);
    printf("  불일치(U)     : %ld\n", mismatch);
    printf("  수수료 편차합 : %ld\n", diff_sum);
    printf("  오류 건수     : %ld\n", errcnt);
    printf("=============================================\n");

    return (errcnt == 0) ? TX_OK : TX_FAIL;
}

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, "[vl_bt_0009] 배치 시작 date=%s", biz_date);

    rc = vl_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[vl_bt_0009] DB 접속 실패 rc=%d", rc);
        return 1;
    }

    rc = run_vl_bt_0009(biz_date);

    vl_dbio_disconnect();

    tx_log(TX_LOG_INFO, "[vl_bt_0009] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}
