/*
 * Copyright (C) 2010 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * File            : trustednfc_jni.c
 * Original-Author : Trusted Logic S.A. (Jeremie Corbier)
 * Created         : 26-08-2009
 */
#include "errno.h"
#include "trustednfc_jni.h"
#include "phLibNfcStatus.h"

namespace android {

extern struct trustednfc_jni_native_data *exported_nat;

/*
 * JNI Utils
 */
int trustednfc_jni_cache_object(JNIEnv *e, const char *clsname,
   jobject *cached_obj)
{
   jclass cls;
   jobject obj;
   jmethodID ctor;

   cls = e->FindClass(clsname);
   if(cls == NULL)
   {
      return -1;
      LOGD("Find class error\n");
   }


   ctor = e->GetMethodID(cls, "<init>", "()V");

   obj = e->NewObject(cls, ctor);
   if(obj == NULL)
   {
      return -1;
      LOGD("Create object error\n");
   }

   *cached_obj = e->NewGlobalRef(obj);
   if(*cached_obj == NULL)
   {
      e->DeleteLocalRef(obj);
      LOGD("Global ref error\n");
      return -1;
   }

   e->DeleteLocalRef(obj);

   return 0;
}


struct trustednfc_jni_native_data* trustednfc_jni_get_nat(JNIEnv *e, jobject o)
{
   jclass c;
   jfieldID f;

   /* Retrieve native structure address */
   c = e->GetObjectClass(o);
   f = e->GetFieldID(c, "mNative", "I");
   return (struct trustednfc_jni_native_data*)e->GetIntField(o, f);
}

struct trustednfc_jni_native_data* trustednfc_jni_get_nat_ext(JNIEnv *e)
{
   return exported_nat;
}

static trustednfc_jni_native_monitor_t *trustednfc_jni_native_monitor = NULL;

trustednfc_jni_native_monitor_t* trustednfc_jni_init_monitor(void)
{

   pthread_mutexattr_t recursive_attr;

   pthread_mutexattr_init(&recursive_attr);
   pthread_mutexattr_settype(&recursive_attr, PTHREAD_MUTEX_RECURSIVE_NP);

   if(trustednfc_jni_native_monitor == NULL)
   {
      trustednfc_jni_native_monitor = (trustednfc_jni_native_monitor_t*)malloc(sizeof(trustednfc_jni_native_monitor_t));
   }

   if(trustednfc_jni_native_monitor != NULL)
   {
      memset(trustednfc_jni_native_monitor, 0, sizeof(trustednfc_jni_native_monitor_t));

      if(pthread_mutex_init(&trustednfc_jni_native_monitor->reentrance_mutex, &recursive_attr) == -1)
      {
         LOGE("NFC Manager Reentrance Mutex creation retruned 0x%08x", errno);
         return NULL;
      }

      if(pthread_mutex_init(&trustednfc_jni_native_monitor->concurrency_mutex, NULL) == -1)
      {
         LOGE("NFC Manager Concurrency Mutex creation retruned 0x%08x", errno);
         return NULL;
      }
   }

   return trustednfc_jni_native_monitor;
} 

trustednfc_jni_native_monitor_t* trustednfc_jni_get_monitor(void)
{
   return trustednfc_jni_native_monitor;
}
   

phLibNfc_Handle trustednfc_jni_get_p2p_device_handle(JNIEnv *e, jobject o)
{
   jclass c;
   jfieldID f;

   c = e->GetObjectClass(o);
   f = e->GetFieldID(c, "mHandle", "I");

   return e->GetIntField(o, f);
}

jshort trustednfc_jni_get_p2p_device_mode(JNIEnv *e, jobject o)
{
   jclass c;
   jfieldID f;

   c = e->GetObjectClass(o);
   f = e->GetFieldID(c, "mMode", "S");

   return e->GetShortField(o, f);
}


phLibNfc_Handle trustednfc_jni_get_nfc_tag_handle(JNIEnv *e, jobject o)
{
   jclass c;
   jfieldID f;

   c = e->GetObjectClass(o);
   f = e->GetFieldID(c, "mHandle", "I");

   return e->GetIntField(o, f);
}

phLibNfc_Handle trustednfc_jni_get_nfc_socket_handle(JNIEnv *e, jobject o)
{
   jclass c;
   jfieldID f;

   c = e->GetObjectClass(o);
   f = e->GetFieldID(c, "mHandle", "I");

   return e->GetIntField(o, f);
}

jstring trustednfc_jni_get_nfc_tag_type(JNIEnv *e, jobject o)
{
  jclass c;
  jfieldID f;
  jstring type;
   
  c = e->GetObjectClass(o);
  f = e->GetFieldID(c, "mType","Ljava/lang/String;");

  /* Read the instance field */
  type = (jstring)e->GetObjectField(o, f);
  
  return type;  
}

/*
 * JNI Initialization
 */
// TODO: not used any more, to be removed
/*
jint JNI_OnLoad(JavaVM *jvm, void *reserved)
{
   JNIEnv *e;

   LOGD("NFC Service : loading JNI\n");

   // Check JNI version
   if(jvm->GetEnv((void **)&e, JNI_VERSION_1_4))
      return JNI_ERR;

   if(android::register_com_trustedlogic_trustednfc_android_internal_NativeNfcManager(e) == -1)
      return JNI_ERR;   
   if(android::register_com_trustedlogic_trustednfc_android_internal_NativeNfcTag(e) == -1)
      return JNI_ERR;
   if(android::register_com_trustedlogic_trustednfc_android_internal_NativeNdefTag(e) == -1)
      return JNI_ERR;
   if(android::register_com_trustedlogic_trustednfc_android_NdefMessage(e) == -1)
      return JNI_ERR;
   if(android::register_com_trustedlogic_trustednfc_android_NdefRecord(e) == -1)
      return JNI_ERR;
   if(android::register_com_trustedlogic_trustednfc_android_internal_NativeP2pDevice(e) == -1)
      return JNI_ERR;   
   if(android::register_com_trustedlogic_trustednfc_android_internal_NativeLlcpSocket(e) == -1)
      return JNI_ERR;    
   if(android::register_com_trustedlogic_trustednfc_android_internal_NativeLlcpConnectionlessSocket(e) == -1)
      return JNI_ERR;
   if(android::register_com_trustedlogic_trustednfc_android_internal_NativeLlcpServiceSocket(e) == -1)
      return JNI_ERR;


   return JNI_VERSION_1_4;
}
*/

//Display status code
const char* trustednfc_jni_get_status_name(NFCSTATUS status)
{
   #define STATUS_ENTRY(status) { status, #status }
 
   struct status_entry {
      NFCSTATUS   code;
      const char  *name;
   };

   const struct status_entry sNameTable[] = {
      STATUS_ENTRY(NFCSTATUS_SUCCESS),
      STATUS_ENTRY(NFCSTATUS_FAILED),
      STATUS_ENTRY(NFCSTATUS_INVALID_PARAMETER),
      STATUS_ENTRY(NFCSTATUS_INSUFFICIENT_RESOURCES),
      STATUS_ENTRY(NFCSTATUS_TARGET_LOST),
      STATUS_ENTRY(NFCSTATUS_INVALID_HANDLE),
      STATUS_ENTRY(NFCSTATUS_MULTIPLE_TAGS),
      STATUS_ENTRY(NFCSTATUS_ALREADY_REGISTERED),
      STATUS_ENTRY(NFCSTATUS_FEATURE_NOT_SUPPORTED),
      STATUS_ENTRY(NFCSTATUS_SHUTDOWN),
      STATUS_ENTRY(NFCSTATUS_ABORTED),
      STATUS_ENTRY(NFCSTATUS_REJECTED ),
      STATUS_ENTRY(NFCSTATUS_NOT_INITIALISED),
      STATUS_ENTRY(NFCSTATUS_PENDING),
      STATUS_ENTRY(NFCSTATUS_BUFFER_TOO_SMALL),
      STATUS_ENTRY(NFCSTATUS_ALREADY_INITIALISED),
      STATUS_ENTRY(NFCSTATUS_BUSY),
      STATUS_ENTRY(NFCSTATUS_TARGET_NOT_CONNECTED),
      STATUS_ENTRY(NFCSTATUS_MULTIPLE_PROTOCOLS),
      STATUS_ENTRY(NFCSTATUS_DESELECTED),
      STATUS_ENTRY(NFCSTATUS_INVALID_DEVICE),
      STATUS_ENTRY(NFCSTATUS_MORE_INFORMATION),
      STATUS_ENTRY(NFCSTATUS_RF_TIMEOUT),
      STATUS_ENTRY(NFCSTATUS_RF_ERROR),
      STATUS_ENTRY(NFCSTATUS_BOARD_COMMUNICATION_ERROR),
      STATUS_ENTRY(NFCSTATUS_INVALID_STATE),
      STATUS_ENTRY(NFCSTATUS_NOT_REGISTERED),
      STATUS_ENTRY(NFCSTATUS_RELEASED),
      STATUS_ENTRY(NFCSTATUS_NOT_ALLOWED),
      STATUS_ENTRY(NFCSTATUS_INVALID_REMOTE_DEVICE),
      STATUS_ENTRY(NFCSTATUS_SMART_TAG_FUNC_NOT_SUPPORTED),
      STATUS_ENTRY(NFCSTATUS_READ_FAILED),
      STATUS_ENTRY(NFCSTATUS_WRITE_FAILED),
      STATUS_ENTRY(NFCSTATUS_NO_NDEF_SUPPORT),
      STATUS_ENTRY(NFCSTATUS_EOF_NDEF_CONTAINER_REACHED),
      STATUS_ENTRY(NFCSTATUS_INVALID_RECEIVE_LENGTH),
      STATUS_ENTRY(NFCSTATUS_INVALID_FORMAT),
      STATUS_ENTRY(NFCSTATUS_INSUFFICIENT_STORAGE),
      STATUS_ENTRY(NFCSTATUS_FORMAT_ERROR),
   };

   int i = sizeof(sNameTable)/sizeof(status_entry);
 
   while(i>0)
   {
      i--;
      if (sNameTable[i].code == PHNFCSTATUS(status))
      {
         return sNameTable[i].name;
      }
   }

   return "UNKNOWN";
}

} // namespace android