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/* ex: set tabstop=2 expandtab shiftwidth=2 softtabstop=2: */
/*
 *
 * Copyright (c) 2003 The Regents of the University of California.  All 
 * rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * - Neither the name of the University nor the names of its
 *   contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR  PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

 /*
  *
  * Author: Nithya Ramanthan
  *
  */


/*
 *  simple example of using a status device
 */

#include <sympathy.h>

int sbattery_write(status_context_t *info, char* command, size_t buf_size)
{
  parser_state_t *ps = misc_parse_init(command, MISC_PARSE_COLON_SCHEME);
  int node_id, sctr = -1;
  int voltage = -1;
  int retval = STATUS_WRITE_DONE;

  while (misc_parse_next_kvp(ps) >= 0)
  {
    if (!ps->value) {
      elog(LOG_ERR, "ERROR: No node-id returned with key: %s!\n", 
          ps->key);
      retval = EVENT_ERROR(EINVAL);
      goto done;
    }

    if (strcmp(ps->key, "node") == 0) {
      node_id = atoi(ps->value);
      sctr = find_status(node_id);
    }
    else if (strcmp(ps->key, "voltage") == 0) {
      voltage = atoi(ps->value);
    }
    else {
      elog(LOG_ERR, "Unrecognized key: %s\n", ps->key);
    }
  }

  if ((sctr > -1) && (voltage >-1)) {
    /* fixme For now make it a stupid check! */
    if (voltage > sink.status_srcs[sctr].battery_mv) {
      gettimeofday(&sink.status_srcs[sctr].time_battery_changed, NULL);
    }
    sink.status_srcs[sctr].battery_mv = voltage;
  }
  else {
    elog(LOG_ERR, "ERROR: Either node-id or voltage was not provided (%s)!\n",
        command);
    retval = EVENT_ERROR(EINVAL);
    goto done;
  }
done:
  misc_parse_cleanup(ps);
  return retval;
}

int sbattery_print(status_context_t *info, buf_t *buf)
{
  int i;
  
  bufprintf(buf, "Node-Id\t Battery(mV)\t Date-last-changed\n");
  bufprintf(buf, "-------\t -----------\t -----------------\n");

  for (i=0; i < sink.num_srcs; i++) {
    if (sink.status_srcs[i].addr != my_node_id) {
      bufprintf(buf, "%d\t %d\t\t %s\n", sink.status_srcs[i].addr, 
        sink.status_srcs[i].battery_mv, 
        misc_print_date(&sink.status_srcs[i].time_battery_changed));
    }
  }
  bufprintf(buf, "\nTo update a node's battery, write:\n");
  bufprintf(buf, "\tnode=<node-id>:voltage=<int[milli-volts]>\n");
  return STATUS_MSG_COMPLETE;
}

int sbattery_html(status_context_t *info, buf_t *buf)
{
  int i;
  sympathy_node_info_t* status_srcs_cpy[SMAX_SRCS];
  
  order_by_id(status_srcs_cpy);
  
  bufprintf(buf, "<br><table frame=void cellspacing=5 cellpadding=6>\n");
  bufprintf(buf, "<tr><td>%s</td><td>%s</td><td>%s</td></tr>\n",
            "Node ID", "Battery(mV)", "Date-last-changed");
  bufprintf(buf, "<tr><td colspan=3>------------------------------------------------------</td></tr>\n");

  for (i=0; i < sink.num_srcs; i++) {
    if (status_srcs_cpy[i]->addr != my_node_id) {
      bufprintf(buf, "<tr><td>%d</td><td>%d</td><td>%s</td></tr>\n",
		status_srcs_cpy[i]->addr, 
		status_srcs_cpy[i]->battery_mv, 
		misc_print_date(&status_srcs_cpy[i]->time_battery_changed));
    }
  }

  bufprintf(buf, "</table><br>\n");
  
  return STATUS_MSG_COMPLETE;
}