/* @tier medium @module ac @transform acquire-online */
/*
 * ac_ol_0022.pgc - 매입 온라인 서비스 (AC_OL_0022)  [tier=medium]
 *
 * 매입 정산연계: 처리완료 매입 건의 수수료를 차감한 정산금액을 산출하여
 * 정산 테이블에 반영하고 매입 원장을 정산완료 상태로 전이한다.
 */
#include <stdio.h>
#include <string.h>

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

EXEC SQL INCLUDE sqlca;

TX_SERVICE(AC_OL_0022, ctx)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[16];
    char h_merch_id[16];
    char h_biz_date[9];
    char h_status[2];
    long h_amount;
    long h_fee;
    long h_settle_amt;
    char h_settle_no[17];
    EXEC SQL END DECLARE SECTION;

    char key[16], won[32];

    tx_log(TX_LOG_INFO, "[AC_OL_0022] 매입 정산연계 진입");

    if (tx_buf_get(ctx->in, "KEY", key, sizeof(key)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[AC_OL_0022] KEY 누락");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    strncpy(h_key, key, sizeof(h_key) - 1);
    h_key[sizeof(h_key) - 1] = '\0';

    EXEC SQL SELECT amount, fee, merch_id, biz_date, status
        INTO :h_amount, :h_fee, :h_merch_id, :h_biz_date, :h_status
        FROM ac_ledger
        WHERE key = :h_key;

    if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
        tx_log(TX_LOG_WARN, "[AC_OL_0022] 매입 원장 없음 key=%s", key);
        tx_return(ctx, TX_ENOENT, ctx->out);
        return;
    }
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("SELECT ac_ledger for settle");
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    if (strncmp(h_status, AC_ST_DONE, 1) != 0) {
        tx_log(TX_LOG_WARN, "[AC_OL_0022] 정산연계 불가 상태 key=%s status=%s",
               key, h_status);
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    h_settle_amt = h_amount - h_fee;
    if (h_settle_amt < 0)
        h_settle_amt = 0;

    /* 정산번호 채번: ST + 영업일 + 매입키(뒤 6자리) */
    snprintf(h_settle_no, sizeof(h_settle_no), "ST%s%.6s", h_biz_date, key);

    if (tx_begin() != TX_OK) {
        tx_log(TX_LOG_ERROR, "[AC_OL_0022] 트랜잭션 시작 실패");
        tx_return(ctx, TX_FAIL, ctx->out);
        return;
    }

    EXEC SQL INSERT INTO settle
        (settle_no, merch_id, biz_date, settle_amt, status)
        VALUES
        (:h_settle_no, :h_merch_id, :h_biz_date, :h_settle_amt, 'S');

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("INSERT settle");
        tx_abort();
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    EXEC SQL UPDATE ac_ledger
        SET status = 'S', settle_no = :h_settle_no
        WHERE key = :h_key;

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("UPDATE ac_ledger settle status");
        tx_abort();
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }
    if (sqlca.sqlerrd[2] == 0) {
        tx_log(TX_LOG_WARN, "[AC_OL_0022] 정산반영 대상 없음 key=%s", key);
        tx_abort();
        tx_return(ctx, TX_ENOENT, ctx->out);
        return;
    }

    tx_commit();

    amount_format_won(h_settle_amt, won, sizeof(won));

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "RESPCODE", RESP_OK);
    tx_buf_sets(ctx->out, "KEY", key);
    tx_buf_sets(ctx->out, "SETTLENO", h_settle_no);
    tx_buf_setlong(ctx->out, "SETTLEAMT", h_settle_amt);

    tx_log(TX_LOG_INFO, "[AC_OL_0022] 완료 key=%s settleno=%s 정산액=%s(%ld)",
           key, h_settle_no, won, h_settle_amt);
    tx_return(ctx, TX_OK, ctx->out);
}