/*
 * This file is part of the weatherdaemon project.
 * Copyright 2025 Edward V. Emelianov <edward.emelianoff@gmail.com>.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

// dummy meteostation sending data each `tpoll` seconds

#include "weathlib.h"

#define SENSOR_NAME     "Dummy weatherstation"

#define NS (7)

static const val_t values[NS] = { // fields `name` and `comment` have no sense until value meaning is `IS_OTHER`
    {.sense = VAL_OBLIGATORY, .type = VALT_FLOAT, .meaning = IS_WIND},
    {.sense = VAL_RECOMMENDED, .type = VALT_FLOAT, .meaning = IS_WINDDIR},
    {.sense = VAL_OBLIGATORY, .type = VALT_FLOAT, .meaning = IS_AMB_TEMP},
    {.sense = VAL_RECOMMENDED, .type = VALT_FLOAT, .meaning = IS_PRESSURE},
    {.sense = VAL_RECOMMENDED, .type = VALT_FLOAT, .meaning = IS_HUMIDITY},
    {.sense = VAL_OBLIGATORY, .type = VALT_UINT, .meaning = IS_PRECIP},
    {.sense = VAL_FORCEDSHTDN, .type = VALT_FLOAT, .meaning = IS_LIGTDIST},
};

static void *mainthread(void *s){
    FNAME();
    double t0 = sl_dtime();
    sensordata_t *sensor = (sensordata_t *)s;
    while(1){
        //DBG("locked");
        pthread_mutex_lock(&sensor->valmutex);
        float f = sensor->values[0].value.f + (drand48() - 0.5) / 2.;
        if(f >= 0.) sensor->values[0].value.f = f;
        f = sensor->values[1].value.f + (drand48() - 0.5) * 4.;
        if(f > 160. && f < 200.) sensor->values[1].value.f = f;
        f = sensor->values[2].value.f + (drand48() - 0.5) / 2.;
        if(f > 13. && f < 21.) sensor->values[2].value.f = f;
        f = sensor->values[3].value.f + (drand48() - 0.5) / 100.;
        if(f > 585. && f < 615.) sensor->values[3].value.f = f;
        f = sensor->values[4].value.f + (drand48() - 0.5) * 10.;
        if(f > 60. && f <= 100.) sensor->values[4].value.f = f;
        sensor->values[5].value.u = (f > 98.) ? 1 : 0;
        //if(!sensor->values[5].value.u && drand48() > 0.7) sensor->values[5].value.u = 1;
        time_t cur = time(NULL);
        for(int i = 0; i < NS-1; ++i) sensor->values[i].time = cur;
        f = sensor->values[6].value.f - (drand48() - 0.2) * 100.;
        if(f > 0. && f < 60000){
            sensor->values[6].value.f = f;
            sensor->values[6].time = cur;
        }
        pthread_mutex_unlock(&sensor->valmutex);
        //DBG("unlocked");
        if(sensor->freshdatahandler) sensor->freshdatahandler(sensor);
        while(sl_dtime() - t0 < sensor->tpoll) usleep(500);
        t0 = sl_dtime();
    }
    return NULL;
}

sensordata_t *sensor_new(int N, time_t pollt, int _U_ fd){
    FNAME();
    sensordata_t *s = common_new();
    if(!s) return NULL;
    s->Nvalues = NS;
    strncpy(s->name, SENSOR_NAME, NAME_LEN);
    if(pollt) s->tpoll = pollt;
    s->values = MALLOC(val_t, NS);
    for(int i = 0; i < NS; ++i) s->values[i] = values[i];
    s->values[0].value.f = 1.;
    s->values[1].value.f = 180.;
    s->values[2].value.f = 17.;
    s->values[3].value.f = 600.;
    s->values[4].value.f = 89.;
    s->values[5].value.u = 0;
    s->values[6].value.f = 54000.;
    s->PluginNo = N;
    if(pthread_create(&s->thread, NULL, mainthread, (void*)s)){
        s->kill(s);
        return NULL;
    }
    s->fdes = 0;
    return s;
}