/* @tier hard @module py @transform payment-batch */
/*
 * py_bt_0003.pgc - 지급결과 수신반영 배치 (고정길이 결과파일 read)  [tier=hard]
 *
 * 배치 main 엔트리 포함.  실행:  py_bt_0003 <YYYYMMDD> [db@host]
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

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

EXEC SQL INCLUDE sqlca;

static int run_py_bt_0003(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[16];
    EXEC SQL END DECLARE SECTION;

    FILE *fp;
    char path[80], raw[512], keybuf[16], respbuf[8];
    acq_msg_t msg;
    long total = 0, applied = 0, failed = 0, errcnt = 0;
    int  i;

    snprintf(path, sizeof(path), "py_result_%s.dat", biz_date);
    fp = fopen(path, "rb");
    if (!fp) {
        tx_log(TX_LOG_WARN, "[py_bt_0003] 결과파일 없음 %s - 반영대상 0", path);
        printf("===== 지급결과 수신반영 [py_bt_0003] 결과파일 없음 =====\n");
        return TX_OK;
    }

    if (tx_begin() != TX_OK) tx_log(TX_LOG_WARN, "[py_bt_0003] tx_begin 경고");
    while (fread(raw, 1, (size_t)MSG_ACQ_LEN, fp) == (size_t)MSG_ACQ_LEN) {
        total++;
        if (msg_unpack(&msg, raw, MSG_ACQ_LEN) != 0) { errcnt++; continue; }
        msg_field_copy(keybuf, msg.approval_no, FLD_APPROVAL_LEN);
        keybuf[FLD_APPROVAL_LEN] = '\0';
        msg_field_copy(respbuf, msg.resp_code, FLD_RESP_LEN);
        respbuf[FLD_RESP_LEN] = '\0';
        for (i = (int)strlen(keybuf) - 1; i >= 0 && keybuf[i] == ' '; i--)
            keybuf[i] = '\0';

        strncpy(h_key, keybuf, 15); h_key[15] = '\0';
        if (strncmp(respbuf, RESP_OK, 4) == 0) {
            EXEC SQL UPDATE py_ledger SET status = 'S', upd_ts = now()
                WHERE key = :h_key AND status = 'M';
            applied++;
        } else {
            EXEC SQL UPDATE py_ledger SET status = 'U', upd_ts = now()
                WHERE key = :h_key AND status = 'M';
            failed++;
        }
        if (sqlca.sqlcode != TX_SQL_OK) errcnt++;
    }
    fclose(fp);
    if (errcnt == 0) tx_commit(); else tx_abort();

    printf("===== 지급결과 수신반영 [py_bt_0003] =====\n");
    printf("  수신=%ld 성공반영=%ld 실패=%ld 오류=%ld\n", total, applied, failed, errcnt);
    tx_log(TX_LOG_INFO, "[py_bt_0003] 결과반영 date=%s applied=%ld", biz_date, applied);
    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, "[py_bt_0003] 배치 시작 date=%s", biz_date);
    rc = py_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[py_bt_0003] DB 접속 실패 rc=%d", rc);
        return 1;
    }
    rc = run_py_bt_0003(biz_date);
    py_dbio_disconnect();
    tx_log(TX_LOG_INFO, "[py_bt_0003] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}
