/* @tier easy @module ac @transform acquire-batch */
/*
 * ac_bt_0009.pgc - 해외매입 환산 배치  [tier=easy]
 *
 * 지정 영업일의 외화(cur_code<>'KRW') 매입 건을 커서로 순회하며
 * 통화별 당일 기준환율(fx_rate)로 원화 환산하여 매입원장에 반영한다.
 * 배치 main 엔트리 포함.
 *
 * 실행:  ac_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 "ac_core.h"

EXEC SQL INCLUDE sqlca;

static int run_ac_bt_0009(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9];
    char h_key[16];
    char h_cur_code[5];
    long h_fx_amount;
    long h_base_rate;
    long h_krw;
    EXEC SQL END DECLARE SECTION;

    long total = 0, converted = 0, norate = 0, errcnt = 0;
    long sum_krw = 0;
    char buf_amt[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_ac_bt_0009 CURSOR FOR
        SELECT key, cur_code, fx_amount
        FROM ac_ledger
        WHERE biz_date = :h_biz_date
          AND cur_code IS NOT NULL
          AND cur_code <> 'KRW'
        ORDER BY key;

    EXEC SQL OPEN cur_ac_bt_0009;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("OPEN cur_ac_bt_0009");
        return TX_EDB;
    }

    if (tx_begin() != TX_OK)
        tx_log(TX_LOG_WARN, "[ac_bt_0009] tx_begin 경고");

    for (;;) {
        EXEC SQL FETCH cur_ac_bt_0009 INTO :h_key, :h_cur_code, :h_fx_amount;

        if (sqlca.sqlcode == TX_SQL_NOTFOUND)
            break;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("FETCH cur_ac_bt_0009");
            errcnt++;
            break;
        }

        total++;

        EXEC SQL SELECT base_rate
            INTO :h_base_rate
            FROM fx_rate
            WHERE cur_code  = :h_cur_code
              AND rate_date = :h_biz_date;

        if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
            tx_log(TX_LOG_WARN, "[ac_bt_0009] 환율없음 key=%s cur=%s", h_key, h_cur_code);
            norate++;
            continue;
        }
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("SELECT fx_rate");
            errcnt++;
            continue;
        }

        /* 업무규칙: 원화환산액 = 외화금액 * 기준환율 / 10000 */
        h_krw = h_fx_amount * h_base_rate / 10000;

        EXEC SQL UPDATE ac_ledger
            SET amount = :h_krw
            WHERE key = :h_key;

        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("UPDATE cur_ac_bt_0009");
            tx_log(TX_LOG_ERROR, "[ac_bt_0009] 환산 반영 실패 key=%s", h_key);
            errcnt++;
            continue;
        }
        if (sqlca.sqlerrd[2] == 0) {
            tx_log(TX_LOG_WARN, "[ac_bt_0009] 대상없음 key=%s", h_key);
            errcnt++;
            continue;
        }

        converted++;
        sum_krw += h_krw;
    }

    EXEC SQL CLOSE cur_ac_bt_0009;

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

    amount_format_won(sum_krw, buf_amt, sizeof(buf_amt));

    tx_log(TX_LOG_INFO,
           "[ac_bt_0009] 요약 date=%s 대상=%ld 환산=%ld 환율없음=%ld 오류=%ld 금액=%ld",
           biz_date, total, converted, norate, errcnt, sum_krw);

    printf("========== 해외매입 환산 결과 [ac_bt_0009] ==========\n");
    printf("  영업일        : %s\n", biz_date);
    printf("  대상 건수     : %ld\n", total);
    printf("  환산 건수     : %ld\n", converted);
    printf("  환율없음      : %ld\n", norate);
    printf("  오류 건수     : %ld\n", errcnt);
    printf("  총 환산금액   : %s\n", buf_amt);
    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, "[ac_bt_0009] 배치 시작 date=%s", biz_date);

    rc = ac_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[ac_bt_0009] DB 접속 실패 rc=%d", rc);
        return 1;
    }

    rc = run_ac_bt_0009(biz_date);

    ac_dbio_disconnect();

    tx_log(TX_LOG_INFO, "[ac_bt_0009] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}
