/* @tier hard @module lg @transform ledger-batch */
/*
 * lg_bt_0013.pgc - 전기(轉記) 배치 (접수건 원장전기)  [tier=hard]
 *
 * 지정 영업일의 접수(status='R') 원장을 커서로 순회하며 업무규칙으로
 * 판정하여 유효건은 완료('M')로 전기하고, 무효건은 불일치('U')로 보류한다.
 * 표준 API 대신 직접 EXEC SQL UPDATE 로 status 와 fee(=amount/100)를
 * 함께 갱신한다.
 *
 * 실행:  lg_bt_0013 <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 run_lg_bt_0013(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9];
    char h_key[16];
    long h_amount;
    char h_status[2];
    long h_fee;
    EXEC SQL END DECLARE SECTION;

    long total = 0, posted = 0, held = 0, errcnt = 0;
    long sum_fee = 0;
    char won[32];

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

    EXEC SQL DECLARE cur_lg_bt_0013 CURSOR FOR
        SELECT key, amount
        FROM lg_ledger
        WHERE biz_date = :h_biz_date
          AND status   = 'R'
        ORDER BY key;

    EXEC SQL OPEN cur_lg_bt_0013;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("OPEN cur_lg_bt_0013");
        return TX_EDB;
    }

    if (tx_begin() != TX_OK)
        tx_log(TX_LOG_WARN, "[lg_bt_0013] tx_begin 경고");

    for (;;) {
        EXEC SQL FETCH cur_lg_bt_0013 INTO :h_key, :h_amount;

        if (sqlca.sqlcode == TX_SQL_NOTFOUND)
            break;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("FETCH cur_lg_bt_0013");
            errcnt++;
            break;
        }

        total++;

        /* 전기 판정: 유효 → 완료(M)+수수료 산정, 무효 → 보류(U)+수수료 0 */
        if (amount_is_valid(h_amount)) {
            strncpy(h_status, LG_ST_DONE, sizeof(h_status));
            h_fee = h_amount / 100;
        } else {
            strncpy(h_status, LG_ST_FAIL, sizeof(h_status));
            h_fee = 0;
        }
        h_status[sizeof(h_status) - 1] = '\0';

        EXEC SQL UPDATE lg_ledger
            SET status = :h_status, fee = :h_fee, upd_ts = now()
            WHERE key = :h_key;

        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("UPDATE 전기 lg_bt_0013");
            errcnt++;
            continue;
        }

        if (strcmp(h_status, LG_ST_DONE) == 0) {
            posted++;
            sum_fee += h_fee;
        } else {
            held++;
        }
    }

    EXEC SQL CLOSE cur_lg_bt_0013;

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

    amount_format_won(sum_fee, won, sizeof(won));

    tx_log(TX_LOG_INFO,
           "[lg_bt_0013] 요약 date=%s 대상=%ld 전기=%ld 보류=%ld 수수료=%ld 오류=%ld",
           biz_date, total, posted, held, sum_fee, errcnt);

    printf("========== 원장 전기 결과 [lg_bt_0013] ==========\n");
    printf("  영업일        : %s\n", biz_date);
    printf("  대상(R) 건수  : %ld\n", total);
    printf("  전기(→M) 건수 : %ld\n", posted);
    printf("  보류(→U) 건수 : %ld\n", held);
    printf("  전기 수수료   : %s\n", won);
    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, "[lg_bt_0013] 배치 시작 date=%s", biz_date);

    rc = lg_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[lg_bt_0013] DB 접속 실패 rc=%d", rc);
        return 1;
    }

    rc = run_lg_bt_0013(biz_date);

    lg_dbio_disconnect();

    tx_log(TX_LOG_INFO, "[lg_bt_0013] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}
