/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "capability_set.h"
#include "CCProvider.h"

// --------------------------------------------------------------------------------
// Data Structures Used to Store the Capability Set Information
//    Settings on kept on a per call state, per feature basis.
//    Includes all general endpoint capabilities, plus fcp-controlled ones
// --------------------------------------------------------------------------------
static cc_boolean  capability_set[MAX_CALL_STATES][CCAPI_CALL_CAP_MAX];
static cc_boolean  capability_idleset[CCAPI_CALL_CAP_MAX];


// --------------------------------------------------------------------------------
// Data Structures Used to Store the Parsed FCP information from UCM/FCP file
//    (after parse will be used to selectively set capabilities in the above also)
// --------------------------------------------------------------------------------

// maximum number of features
#define FCP_FEATURE_MAX      9

char                                    g_fp_version_stamp[MAX_FP_VERSION_STAMP_LEN];
static cc_feature_control_policy_info_t cc_feat_control_policy[FCP_FEATURE_MAX];
static ccapi_call_capability_e          cc_fcp_id_to_capability_map[FCP_FEATURE_MAX+1];    // 0th entry of map is not used/null entry


static const unsigned int               CALL_FORWARD_ALL_FCP_INDEX  = 1;
static const unsigned int               CONFERENCE_LIST_FCP_INDEX   = 4;
static const unsigned int               SPEED_DIAL_FCP_INDEX        = 5;
static const unsigned int               CALL_BACK_FCP_INDEX         = 6;
static const unsigned int               REDIAL_FCP_INDEX            = 7;

static int                              fcp_index = -1;

// --------------------------------------------------------------------------------


/*
 * capset_set_fcp_forwardall - sets the fcp-controlled call forward all feature
 *
 */
static void capset_set_fcp_forwardall (cc_boolean state)
{
   CONFIG_DEBUG(DEB_F_PREFIX"FCP Setting CALLFWD Capability to [%d]\n", DEB_F_PREFIX_ARGS(JNI, "capset_set_fcp_forwardall"), (unsigned int)state);

   capability_idleset[CCAPI_CALL_CAP_CALLFWD]       = state;
   capability_set[OFFHOOK][CCAPI_CALL_CAP_CALLFWD]  = state;
}

/*
 * capset_set_fcp_redial - sets the fcp-controlled redial feature
 *
 */
static void capset_set_fcp_redial (cc_boolean state)
{
   CONFIG_DEBUG(DEB_F_PREFIX"FCP Setting REDIAL capability to [%d]\n", DEB_F_PREFIX_ARGS(JNI, "capset_set_fcp_redial"), (unsigned int)state);

   capability_idleset[CCAPI_CALL_CAP_REDIAL]        = state;
   capability_set[OFFHOOK][CCAPI_CALL_CAP_REDIAL]   = state;
   capability_set[ONHOOK][CCAPI_CALL_CAP_REDIAL]    = state;
}

// --------------------------------------------------------------------------------


/*
 * fcp_set_index - sets a given feture index number (from fcp xml file), maps it to the internal
 * call capability, and sets the appropriate state-based capability for the feature index
 *
 */
static void fcp_set_index (unsigned int fcpCapabilityId, cc_boolean state)
{
   ccapi_call_capability_e capabilityId = CCAPI_CALL_CAP_MAX;

   // range check the capability index
   if ((fcpCapabilityId <= 0) || (fcpCapabilityId > FCP_FEATURE_MAX))
   {
        CONFIG_ERROR(CFG_F_PREFIX "Unable to set capability of unknown feature [%d] in FCP \n", "fcp_set_index", fcpCapabilityId);
        return;
   }

   // convert the fcp index to an fcp capability id
   capabilityId = cc_fcp_id_to_capability_map[fcpCapabilityId];


   // based on the capability id, invoke the appropate method specific to that capability
   switch (capabilityId)
   {
       case CCAPI_CALL_CAP_CALLFWD  :  capset_set_fcp_forwardall (state);      break;
       case CCAPI_CALL_CAP_REDIAL   :  capset_set_fcp_redial (state);          break;
       default :
       {
           CONFIG_ERROR(CFG_F_PREFIX "Unable to update settings for capability [%d]\n", "fcp_set_index", (int)capabilityId);
           break;
       }
    }
}

/*
 * capset_init - initialize the internal capability data structures to defaults
 *
 */
static void capset_init ()
{
   // initialize the 4 tables related to capability set to false
   memset(capability_idleset, 0, sizeof(capability_idleset));
   memset(capability_set, 0, sizeof(capability_set));

   // ----------------------------------------------------------------------
   // FCP based capabilities
   // ----------------------------------------------------------------------

   CONFIG_DEBUG(DEB_F_PREFIX"FCP Initializing Capabilities to default\n", DEB_F_PREFIX_ARGS(JNI, "capset_init"));

   // ----------------------------------------------------------------------
   // Non-FCP-based Capabilities
   // ----------------------------------------------------------------------

   // Now, set all the non-FCP based capabilities to appropriate default settings
   // (some of which may be enabled by default)

   capability_idleset[CCAPI_CALL_CAP_NEWCALL]                    = TRUE;

   // call-state based settings
   // offhook
   capability_set[OFFHOOK][CCAPI_CALL_CAP_ENDCALL]               = TRUE;

   // onhook
   capability_set[ONHOOK][CCAPI_CALL_CAP_NEWCALL] = TRUE;

   // ringout
   capability_set[RINGOUT][CCAPI_CALL_CAP_ENDCALL] = TRUE;

   // ringing
   capability_set[RINGIN][CCAPI_CALL_CAP_ANSWER] = TRUE;

   // proceed
   capability_set[PROCEED][CCAPI_CALL_CAP_ENDCALL] = TRUE;

   // connected
   capability_set[CONNECTED][CCAPI_CALL_CAP_ENDCALL] = TRUE;
   capability_set[CONNECTED][CCAPI_CALL_CAP_HOLD] = TRUE;
   capability_set[CONNECTED][CCAPI_CALL_CAP_TRANSFER] = TRUE;
   capability_set[CONNECTED][CCAPI_CALL_CAP_CONFERENCE] = TRUE;
   capability_set[CONNECTED][CCAPI_CALL_CAP_SELECT] = TRUE;

   // hold
   capability_set[HOLD][CCAPI_CALL_CAP_RESUME] = TRUE;
   capability_set[REMHOLD][CCAPI_CALL_CAP_RESUME] = TRUE;

   // busy
   capability_set[BUSY][CCAPI_CALL_CAP_ENDCALL] = TRUE;

   // reorder
   capability_set[REORDER][CCAPI_CALL_CAP_ENDCALL] = TRUE;

   // dialing
   capability_set[DIALING][CCAPI_CALL_CAP_ENDCALL] = TRUE;
   capability_set[DIALING][CCAPI_CALL_CAP_DIAL] = TRUE;
   capability_set[DIALING][CCAPI_CALL_CAP_SENDDIGIT] = TRUE;
   capability_set[DIALING][CCAPI_CALL_CAP_BACKSPACE] = TRUE;

   // holdrevert
   capability_set[HOLDREVERT][CCAPI_CALL_CAP_ANSWER] = TRUE;

   // preservation
   capability_set[PRESERVATION][CCAPI_CALL_CAP_ENDCALL] = TRUE;

   // waiting for digits
   capability_set[WAITINGFORDIGITS][CCAPI_CALL_CAP_SENDDIGIT] = TRUE;
   capability_set[WAITINGFORDIGITS][CCAPI_CALL_CAP_BACKSPACE] = TRUE;
}


/*
 * capset_get_idleset - get the set of features associated with idle state
 *
 */
void capset_get_idleset ( cc_cucm_mode_t mode, cc_boolean features[])
{
  static const char fname[] = "capset_get_idleset";
  int i;

  CCAPP_DEBUG(DEB_F_PREFIX"updating idleset",
            DEB_F_PREFIX_ARGS(SIP_CC_PROV, fname));

     for (i=0;i < CCAPI_CALL_CAP_MAX; i++) {
  CCAPP_DEBUG(DEB_F_PREFIX"updating line features %d=%d",
            DEB_F_PREFIX_ARGS(SIP_CC_PROV, fname), i, capability_idleset[i]);
       features[i] = capability_idleset[i];
     }

}

/*
 * capset_get_allowed_features - get the set of features
 *
 */
void capset_get_allowed_features ( cc_cucm_mode_t mode, cc_call_state_t state, cc_boolean features[])
{
  static const char fname[] = "capset_get_allowed_features";
  int i;

  CCAPP_DEBUG(DEB_F_PREFIX"updating idleset",
            DEB_F_PREFIX_ARGS(SIP_CC_PROV, fname));

  for (i=0;i < CCAPI_CALL_CAP_MAX; i++) {
      features[i] = capability_set[state][i];
  }

}

// --------------------------------------------------------------------------------------------------------
// ---------------------------- XML Parse Logic for Feature Control Policy --------------------------------
// --------------------------------------------------------------------------------------------------------

/*
 * fcp_set_capabilities - updates the capabilities structure, based on the now parsed information
 * from fcp xml file
 *
 */

static void fcp_set_capabilities()
{
   int my_fcp_index = 0;

    if ( (fcp_index+1) >= FCP_FEATURE_MAX) {
        fcp_index = (FCP_FEATURE_MAX -1);
        CONFIG_ERROR(CFG_F_PREFIX "Received more than the maximum supported features [%d] in FCP \n", "fcp_set_capabilities", FCP_FEATURE_MAX);

    }
   // loop over all the FCP features parsed, and for each one, based on ID, and enabled settings,
   // update the corresponding call capability flags
   for (my_fcp_index = 0; my_fcp_index <= fcp_index; my_fcp_index++)
   {   // set the capability if fcp file has it marked as 'enabled'
       fcp_set_index(cc_feat_control_policy[my_fcp_index].featureId, (cc_feat_control_policy[my_fcp_index].featureEnabled == TRUE));
   }
}

/*
 * fcp_init - initialize the data structure used to store the fcp parse info
 *
 */
static void fcp_init()
{
   // master index; set to null
   fcp_index = -1;

   // initialize the map of fcp xml feature indexes to internal call capabilities
   cc_fcp_id_to_capability_map[CALL_FORWARD_ALL_FCP_INDEX]   = CCAPI_CALL_CAP_CALLFWD;
   cc_fcp_id_to_capability_map[REDIAL_FCP_INDEX]             = CCAPI_CALL_CAP_REDIAL;

   // initialize the capability set data structures
   capset_init();

   // initialize the version
   g_fp_version_stamp[0] = '\0';
}

/*
 * capset_set_fcp_forwardall - sets the fcp-controlled call forward all feature
 *
 */
int fcp_init_template (const char* fcp_plan_string)
{
    fcp_init();

    if (fcp_plan_string == NULL)
    {   // set up the default fcp
       return (0);
    }

    // update the fcp capabilities structure, based on the parsed feature information
    fcp_set_capabilities();

    return (0);
}
// ---------------------------- End Of XML Parse Logic for Feature Control Policy --------------------------