/*
 * lg_allowance_batch.pgc - 대손충당금 산정 배치: RECV 누계잔액 x 율 로 필요 충당금 계산 (XA).
 *
 * ATMI client: tpinit/tpopen open the ECPG XA RM, tpbegin starts ONE global
 * transaction; EXEC SQL work runs on that branch, then tpcommit drives XA 2PC.
 * 복식부기: 차변(D) 합 = 대변(C) 합. Usage: lg_allowance_batch [YYYY-MM-DD] [FROM|arg]
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <atmi.h>
#include "lg_dbio.h"
#include "lg_allowance_batch.h"

int main(int argc, char **argv)
{
    const char *bizdate = (argc > 1) ? argv[1] : "2026-07-19";
    const char *fromd = (argc > 2) ? argv[2] : bizdate;
    EXEC SQL BEGIN DECLARE SECTION;
    char h_bizdate[16], h_from[16], h_acct[32], h_type[16];
    long h_dr, h_cr;
    EXEC SQL END DECLARE SECTION;
    strncpy(h_bizdate, bizdate, sizeof(h_bizdate)-1); h_bizdate[sizeof(h_bizdate)-1] = 0;
    strncpy(h_from, fromd, sizeof(h_from)-1); h_from[sizeof(h_from)-1] = 0;

    if (tpinit(NULL) < 0) { fprintf(stderr, "tpinit FAIL: %s\n", tpstrerror(tperrno)); return 1; }
    if (tpopen() < 0)     { fprintf(stderr, "tpopen FAIL: %s\n", tpstrerror(tperrno)); return 1; }
    if (tpbegin(60, 0) < 0) { fprintf(stderr, "tpbegin FAIL: %s\n", tpstrerror(tperrno)); return 1; }
        long rate = (argc > 2) ? atol(argv[2]) : 100;
        long base = 0, allow = 0;
        EXEC SQL SELECT coalesce(sum(CASE WHEN dc = 'D' THEN amount ELSE -amount END), 0)
            INTO :h_dr FROM lg_ledger_line WHERE acct = 'RECV' AND biz_date <= :h_bizdate;
        if (sqlca.sqlcode < 0) { fprintf(stderr, "SEL FAIL [%d] %s\n", sqlca.sqlcode, sqlca.sqlerrm.sqlerrmc); tpabort(0); return 1; }
        base = h_dr; allow = base * rate / 10000;
        printf("    %s RECV잔액 %ld @%ldbp 필요충당금 %ld\n", bizdate, base, rate, allow);
    if (tpcommit(0) < 0) { fprintf(stderr, "tpcommit FAIL: %s\n", tpstrerror(tperrno)); tpabort(0); return 1; }
    printf(">>> lg_allowance_batch COMMIT: bizdate=%s\n", bizdate);
    tpclose(); tpterm();
    return 0;
}
