/* @tier medium @module ac @transform acquire-batch */
/*
 * ac_bt_0011.pgc - 매입-승인 대사연계 배치  [tier=medium]
 *
 * 지정 영업일의 접수(status='R') 매입행을 커서로 순회하며 승인(approval)
 * 테이블의 동일 승인번호 금액과 대사한다. 승인정보가 없거나 금액이
 * 상이하면 불일치('U'), 금액이 일치하면 완료('M') 로 상태를 전이하고
 * 불일치 금액합을 집계한다. 배치 main 엔트리 포함.
 *
 * 실행:  ac_bt_0011 <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_0011(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9];
    char h_key[16];
    char h_approval_no[17];
    long h_amount;
    long h_appr_amount;
    char h_new_status[2];
    EXEC SQL END DECLARE SECTION;

    long total = 0, matched = 0, unmatch = 0, errcnt = 0;
    long 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_ac_bt_0011 CURSOR FOR
        SELECT key, approval_no, amount
        FROM ac_ledger
        WHERE biz_date = :h_biz_date
          AND status   = 'R'
        ORDER BY key;

    EXEC SQL OPEN cur_ac_bt_0011;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("OPEN cur_ac_bt_0011");
        return TX_EDB;
    }

    if (tx_begin() != TX_OK)
        tx_log(TX_LOG_WARN, "[ac_bt_0011] tx_begin 경고");

    for (;;) {
        EXEC SQL FETCH cur_ac_bt_0011 INTO :h_key, :h_approval_no, :h_amount;

        if (sqlca.sqlcode == TX_SQL_NOTFOUND)
            break;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("FETCH cur_ac_bt_0011");
            errcnt++;
            break;
        }

        total++;

        EXEC SQL SELECT amount
            INTO :h_appr_amount
            FROM approval
            WHERE approval_no = :h_approval_no;

        if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
            /* 승인정보 없음: 전액 불일치로 처리 */
            strncpy(h_new_status, AC_ST_FAIL, sizeof(h_new_status));
            diff_sum += labs(h_amount);
            unmatch++;
        } else if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("SELECT ac_bt_0011 approval");
            errcnt++;
            continue;
        } else if (h_amount == h_appr_amount) {
            strncpy(h_new_status, AC_ST_DONE, sizeof(h_new_status));
            matched++;
        } else {
            strncpy(h_new_status, AC_ST_FAIL, sizeof(h_new_status));
            diff_sum += labs(h_amount - h_appr_amount);
            unmatch++;
        }

        rc = ac_rec_update_status(h_key, h_new_status);
        if (rc != TX_OK) {
            tx_log(TX_LOG_ERROR, "[ac_bt_0011] 상태전이 실패 key=%s rc=%d", h_key, rc);
            errcnt++;
        }
    }

    EXEC SQL CLOSE cur_ac_bt_0011;

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

    tx_log(TX_LOG_INFO,
           "[ac_bt_0011] 요약 date=%s 대상=%ld 일치=%ld 불일치=%ld 불일치금액=%ld 오류=%ld",
           biz_date, total, matched, unmatch, diff_sum, errcnt);

    printf("========== 매입-승인 대사연계 결과 [ac_bt_0011] ==========\n");
    printf("  영업일        : %s\n", biz_date);
    printf("  대상 건수     : %ld\n", total);
    printf("  대사일치(M)   : %ld\n", matched);
    printf("  불일치(U)     : %ld\n", unmatch);
    printf("  불일치 금액합 : %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, "[ac_bt_0011] 배치 시작 date=%s", biz_date);

    rc = ac_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[ac_bt_0011] DB 접속 실패 rc=%d", rc);
        return 1;
    }

    rc = run_ac_bt_0011(biz_date);

    ac_dbio_disconnect();

    tx_log(TX_LOG_INFO, "[ac_bt_0011] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}
