/* @tier medium @module ac @transform acquire-online */
/*
 * ac_ol_0024.pgc - 매입 온라인 서비스 (AC_OL_0024)  [tier=medium]
 *
 * 매입 재분류: 매입금액 구간에 따라 매입유형(acq_type)을 대형/중형/소형
 * 가맹점 기준으로 재분류하여 매입 원장에 반영한다.
 */
#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;

#define AC_TYPE_LARGE  "LG"
#define AC_TYPE_MEDIUM "MD"
#define AC_TYPE_SMALL  "SM"

TX_SERVICE(AC_OL_0024, ctx)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[16];
    long h_amount;
    char h_old_type[4];
    char h_acq_type[4];
    EXEC SQL END DECLARE SECTION;

    char key[16];
    const char *class_name;

    tx_log(TX_LOG_INFO, "[AC_OL_0024] 매입 재분류 진입");

    if (tx_buf_get(ctx->in, "KEY", key, sizeof(key)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[AC_OL_0024] 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, coalesce(acq_type, '')
        INTO :h_amount, :h_old_type
        FROM ac_ledger
        WHERE key = :h_key;

    if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
        tx_log(TX_LOG_WARN, "[AC_OL_0024] 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 amount(reclass)");
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    /* 업무규칙: 금액 구간별 매입유형 재분류 (대형/중형/소형) */
    if (h_amount >= 1000000L) {
        class_name = AC_TYPE_LARGE;
    } else if (h_amount >= 100000L) {
        class_name = AC_TYPE_MEDIUM;
    } else {
        class_name = AC_TYPE_SMALL;
    }
    strncpy(h_acq_type, class_name, sizeof(h_acq_type) - 1);
    h_acq_type[sizeof(h_acq_type) - 1] = '\0';

    if (strcmp(h_old_type, h_acq_type) == 0) {
        tx_log(TX_LOG_INFO, "[AC_OL_0024] 재분류 변경 없음 key=%s type=%s",
               key, h_acq_type);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_OK);
        tx_buf_sets(ctx->out, "KEY", key);
        tx_buf_setlong(ctx->out, "AMOUNT", h_amount);
        tx_buf_sets(ctx->out, "OLDTYPE", h_old_type);
        tx_buf_sets(ctx->out, "ACQTYPE", h_acq_type);
        tx_return(ctx, TX_OK, ctx->out);
        return;
    }

    if (tx_begin() != TX_OK) {
        tx_log(TX_LOG_ERROR, "[AC_OL_0024] 트랜잭션 시작 실패");
        tx_return(ctx, TX_FAIL, ctx->out);
        return;
    }

    EXEC SQL UPDATE ac_ledger
        SET acq_type = :h_acq_type
        WHERE key = :h_key;

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("UPDATE ac_ledger acq_type");
        tx_abort();
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }
    if (sqlca.sqlerrd[2] == 0) {
        tx_log(TX_LOG_WARN, "[AC_OL_0024] 재분류대상 없음 key=%s", key);
        tx_abort();
        tx_return(ctx, TX_ENOENT, ctx->out);
        return;
    }

    tx_commit();

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "RESPCODE", RESP_OK);
    tx_buf_sets(ctx->out, "KEY", key);
    tx_buf_setlong(ctx->out, "AMOUNT", h_amount);
    tx_buf_sets(ctx->out, "OLDTYPE", h_old_type);
    tx_buf_sets(ctx->out, "ACQTYPE", h_acq_type);

    tx_log(TX_LOG_INFO, "[AC_OL_0024] 완료 key=%s amount=%ld %s -> %s",
           key, h_amount, h_old_type, h_acq_type);
    tx_return(ctx, TX_OK, ctx->out);
}
