/* @tier easy @module lg @transform ledger-online */
/*
 * lg_ol_0001.pgc - 원장 온라인 서비스 (LG_OL_0001)  [tier=easy]
 *
 * TxCore TX_SERVICE 엔트리. 요청 TXBUF 를 검증하고 lg 표준 DBIO 를
 * 통해 처리한 뒤, 원장(lg_ledger)을 임베디드 조회하여 수수료/등록일시와
 * 해당 가맹점의 당일 원장 건수를 함께 응답한다.
 */
#include <stdio.h>
#include <string.h>

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

EXEC SQL INCLUDE sqlca;

TX_SERVICE(LG_OL_0001, ctx)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[16];
    char h_merch[16];
    char h_bizdate[9];
    long h_fee;
    char h_reg_ts[32];
    long h_day_cnt;
    EXEC SQL END DECLARE SECTION;

    lg_rec_t rec;
    char key[16];
    int  rc;
    long day_cnt = 0;

    tx_log(TX_LOG_INFO, "[LG_OL_0001] 원장 단건조회 서비스 진입");

    if (tx_buf_get(ctx->in, "KEY", key, sizeof(key)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[LG_OL_0001] KEY 누락");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    memset(&rec, 0, sizeof(rec));
    rc = lg_rec_select(key, &rec);
    if (rc != TX_OK) {
        tx_log(TX_LOG_WARN, "[LG_OL_0001] 조회 실패 key=%s rc=%d(%s)",
               key, rc, tx_strerror(rc));
        tx_return(ctx, rc, ctx->out);
        return;
    }

    /* 원장 수수료/등록일시 임베디드 조회 */
    strncpy(h_key, key, sizeof(h_key) - 1);
    h_key[sizeof(h_key) - 1] = '\0';
    h_fee = 0;
    memset(h_reg_ts, 0, sizeof(h_reg_ts));
    memset(h_bizdate, 0, sizeof(h_bizdate));

    EXEC SQL SELECT fee, biz_date, to_char(reg_ts, 'YYYYMMDDHH24MISS')
        INTO :h_fee, :h_bizdate, :h_reg_ts
        FROM lg_ledger
        WHERE key = :h_key;

    if (sqlca.sqlcode != TX_SQL_OK && sqlca.sqlcode != TX_SQL_NOTFOUND) {
        TX_DBIO_LOG_ERR("SELECT lg_ledger");
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    /* 동일 가맹점 당일 원장 건수 집계 */
    strncpy(h_merch, rec.merch_id, sizeof(h_merch) - 1);
    h_merch[sizeof(h_merch) - 1] = '\0';
    h_day_cnt = 0;
    EXEC SQL SELECT count(*)
        INTO :h_day_cnt
        FROM lg_ledger
        WHERE merch_id = :h_merch
          AND biz_date = :h_bizdate;
    if (sqlca.sqlcode == TX_SQL_OK)
        day_cnt = h_day_cnt;

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "KEY", rec.key);
    tx_buf_sets(ctx->out, "MERCHID", rec.merch_id);
    tx_buf_setlong(ctx->out, "AMOUNT", rec.amount);
    tx_buf_setlong(ctx->out, "FEE", h_fee);
    tx_buf_sets(ctx->out, "STATUS", rec.status);
    tx_buf_sets(ctx->out, "REGTS", h_reg_ts);
    tx_buf_setlong(ctx->out, "DAYCNT", day_cnt);
    tx_log(TX_LOG_INFO, "[LG_OL_0001] 조회완료 key=%s amount=%ld fee=%ld 당일건수=%ld",
           key, rec.amount, h_fee, day_cnt);
    tx_return(ctx, TX_OK, ctx->out);
}
