#include "CLIPSJNI_Environment.h"

#include "clips.h"

#define CLIPSJNI_DATA 67

struct clipsJNIData
  { 
   jclass longClass;
   jmethodID longInitMethod;

   jclass doubleClass;
   jmethodID doubleInitMethod;
   
   jclass arrayListClass;
   jmethodID arrayListInitMethod;
   jmethodID arrayListAddMethod;

   jclass voidValueClass;
   jmethodID voidValueInitMethod;

   jclass integerValueClass;
   jmethodID integerValueInitMethod;
   jclass floatValueClass;
   jmethodID floatValueInitMethod;

   jclass symbolValueClass;
   jmethodID symbolValueInitMethod;
   jclass stringValueClass;
   jmethodID stringValueInitMethod;
   jclass instanceNameValueClass;
   jmethodID instanceNameValueInitMethod;

   jclass multifieldValueClass;
   jmethodID multifieldValueInitMethod;

   jclass factAddressValueClass;
   jmethodID factAddressValueInitMethod;

   jclass instanceAddressValueClass;
   jmethodID instanceAddressValueInitMethod;
  };

#define CLIPSJNIData(theEnv) ((struct clipsJNIData *) GetEnvironmentData(theEnv,CLIPSJNI_DATA))

static int QueryJNIRouter(void *,char *);
static int ExitJNIRouter(void *,int);
static int PrintJNIRouter(void *,char *,char *);
static int GetcJNIRouter(void *,char *);
static int UngetcJNIRouter(void *,int,char *);
static void DeallocateJNIData(void *);
static jobject ConvertSingleFieldValue(JNIEnv *,jobject,void *,int,void *);
static jobject ConvertDataObject(JNIEnv *,jobject,void *,DATA_OBJECT *);

/**********************************************/
/* DeallocateJNIData: Deallocates environment */
/*    data for the JNI functionality.         */
/**********************************************/
static void DeallocateJNIData(
  void *theEnv)
  {
   JNIEnv *env;
   
   env = (JNIEnv *) GetEnvironmentContext(theEnv);
  
   (*env)->DeleteGlobalRef(env,CLIPSJNIData(theEnv)->longClass);
   (*env)->DeleteGlobalRef(env,CLIPSJNIData(theEnv)->doubleClass);
   (*env)->DeleteGlobalRef(env,CLIPSJNIData(theEnv)->arrayListClass);
   (*env)->DeleteGlobalRef(env,CLIPSJNIData(theEnv)->voidValueClass);
   (*env)->DeleteGlobalRef(env,CLIPSJNIData(theEnv)->integerValueClass);
   (*env)->DeleteGlobalRef(env,CLIPSJNIData(theEnv)->floatValueClass);
   (*env)->DeleteGlobalRef(env,CLIPSJNIData(theEnv)->symbolValueClass);
   (*env)->DeleteGlobalRef(env,CLIPSJNIData(theEnv)->stringValueClass);
   (*env)->DeleteGlobalRef(env,CLIPSJNIData(theEnv)->instanceNameValueClass);
   (*env)->DeleteGlobalRef(env,CLIPSJNIData(theEnv)->multifieldValueClass);
   (*env)->DeleteGlobalRef(env,CLIPSJNIData(theEnv)->factAddressValueClass);
   (*env)->DeleteGlobalRef(env,CLIPSJNIData(theEnv)->instanceAddressValueClass);
  }

/*************************************************/
/* FindJNIRouter: Query routine for JNI routers. */
/*************************************************/
static int QueryJNIRouter(
  void *theEnv,
  char *logicalName)
  {
   jobject context;
   jclass cls;
   JNIEnv *env;
   jmethodID mid;
   jboolean rv;
   jstring str;
  
   env = (JNIEnv *) GetEnvironmentContext(theEnv);

   context = GetEnvironmentRouterContext(theEnv);
  
   cls = (*env)->GetObjectClass(env,context);

   mid = (*env)->GetMethodID(env,cls,"query","(Ljava/lang/String;)Z");

   (*env)->DeleteLocalRef(env,cls);

   if (mid == NULL)
     { return FALSE; }

   str = (*env)->NewStringUTF(env,logicalName);

   rv = (*env)->CallBooleanMethod(env,context,mid,str);
      
   (*env)->DeleteLocalRef(env,str);
      
   return(rv);
  }

/*************************************************/
/* ExitJNIRouter:  Exit routine for JNI routers. */
/*************************************************/
#if IBM_TBC
#pragma argsused
#endif
static int ExitJNIRouter(
  void *theEnv,
  int num)
  {
#if MAC_MCW || IBM_MCW || MAC_XCD
#pragma unused(num)
#endif
#if MAC_MCW || IBM_MCW || MAC_XCD
#pragma unused(theEnv)
#endif
   /* TBD deallocate global context reference */
   return(1);
  }

/**************************************************/
/* PrintJNIRouter: Print routine for JNI routers. */
/**************************************************/
static int PrintJNIRouter(
  void *theEnv,
  char *logicalName,
  char *str)
  {
   jobject context;
   JNIEnv *env;
   jmethodID mid;
   jclass cls;
   jstring str1, str2;

   env = (JNIEnv *) GetEnvironmentContext(theEnv);

   context = GetEnvironmentRouterContext(theEnv);

   cls = (*env)->GetObjectClass(env,context);

   mid = (*env)->GetMethodID(env,cls,"print","(Ljava/lang/String;Ljava/lang/String;)V");

   (*env)->DeleteLocalRef(env,cls);

   if (mid == NULL)
     { return FALSE; }

   str1 = (*env)->NewStringUTF(env,logicalName);
   str2 = (*env)->NewStringUTF(env,str);

   (*env)->CallVoidMethod(env,context,mid,str1,str2);

   (*env)->DeleteLocalRef(env,str1);
   (*env)->DeleteLocalRef(env,str2);
   
   return(1);
  }

/************************************************/
/* GetcJNIRouter: Getc routine for JNI routers. */
/************************************************/
static int GetcJNIRouter(
  void *theEnv,
  char *logicalName)
  {
   jint theChar;
   jobject context;
   JNIEnv *env;
   jmethodID mid;
   jclass cls;
   jstring str;

   env = (JNIEnv *) GetEnvironmentContext(theEnv);

   context = GetEnvironmentRouterContext(theEnv);

   cls = (*env)->GetObjectClass(env,context);

   mid = (*env)->GetMethodID(env,cls,"getchar","(Ljava/lang/String;)I");

   (*env)->DeleteLocalRef(env,cls);

   if (mid == NULL)
     { return -1; }

   str = (*env)->NewStringUTF(env,logicalName);

   theChar = (*env)->CallIntMethod(env,context,mid,str);

   (*env)->DeleteLocalRef(env,str);

   return((int) theChar);
  }

/****************************************************/
/* UngetcJNIRouter: Ungetc routine for JNI routers. */
/****************************************************/
static int UngetcJNIRouter(
  void *theEnv,
  int ch,
  char *logicalName)
  {
   jint theChar;
   jobject context;
   JNIEnv *env;
   jmethodID mid;
   jclass cls;
   jstring str;

   env = (JNIEnv *) GetEnvironmentContext(theEnv);

   context = GetEnvironmentRouterContext(theEnv);

   cls = (*env)->GetObjectClass(env,context);

   mid = (*env)->GetMethodID(env,cls,"ungetchar","(Ljava/lang/String;I)I");

   (*env)->DeleteLocalRef(env,cls);

   if (mid == NULL)
     { return -1; }

   str = (*env)->NewStringUTF(env,logicalName);

   theChar = (*env)->CallIntMethod(env,context,mid,(jint) ch,str);

   (*env)->DeleteLocalRef(env,str);

   return((int) theChar);
  }

/*******************************************************/
/* Java_CLIPSJNI_Environment_getCLIPSVersion: Native   */
/*   function for the CLIPSJNI getCLIPSVersion method. */
/* Class:     CLIPSJNI_Environment                     */
/* Method:    getCLIPSVersion                          */
/* Signature: ()Ljava/lang/String;                     */
/*******************************************************/
JNIEXPORT jstring JNICALL Java_CLIPSJNI_Environment_getCLIPSVersion(
  JNIEnv *env, 
  jclass cls) 
  {
   return (*env)->NewStringUTF(env,VERSION_STRING);
  }

/************************************************/
/* Java_CLIPSJNI_Environment_createEnvironment: */
/*                                              */
/*    Class:     CLIPSJNI_Environment           */
/*    Method:    createEnvironment              */
/*    Signature: ()J                            */
/************************************************/
JNIEXPORT jlong JNICALL Java_CLIPSJNI_Environment_createEnvironment(
  JNIEnv *env, 
  jobject obj)
  {
   void *theEnv;
   jclass theLongClass; 
   jmethodID theLongInitMethod;
   jclass theDoubleClass; 
   jmethodID theDoubleInitMethod;
   jclass theArrayListClass; 
   jmethodID theArrayListInitMethod, theArrayListAddMethod;
   jclass theVoidValueClass;
   jmethodID theVoidValueInitMethod;
   jclass theIntegerValueClass, theFloatValueClass;
   jmethodID theIntegerValueInitMethod, theFloatValueInitMethod;
   jclass theSymbolValueClass, theStringValueClass, theInstanceNameValueClass;
   jmethodID theSymbolValueInitMethod, theStringValueInitMethod, theInstanceNameValueInitMethod;
   jclass theMultifieldValueClass;
   jmethodID theMultifieldValueInitMethod;
   jclass theFactAddressValueClass;
   jmethodID theFactAddressValueInitMethod;
   jclass theInstanceAddressValueClass;
   jmethodID theInstanceAddressValueInitMethod;
   
   /*===========================*/
   /* Look up the Java classes. */
   /*===========================*/
   
   theLongClass = (*env)->FindClass(env,"java/lang/Long"); 
   theDoubleClass = (*env)->FindClass(env,"java/lang/Double"); 
   theArrayListClass = (*env)->FindClass(env,"java/util/ArrayList"); 
   theVoidValueClass = (*env)->FindClass(env,"CLIPSJNI/VoidValue");
   theIntegerValueClass = (*env)->FindClass(env,"CLIPSJNI/IntegerValue");
   theFloatValueClass = (*env)->FindClass(env,"CLIPSJNI/FloatValue");
   theSymbolValueClass = (*env)->FindClass(env,"CLIPSJNI/SymbolValue");
   theStringValueClass = (*env)->FindClass(env,"CLIPSJNI/StringValue");
   theInstanceNameValueClass = (*env)->FindClass(env,"CLIPSJNI/InstanceNameValue");
   theMultifieldValueClass = (*env)->FindClass(env,"CLIPSJNI/MultifieldValue");
   theFactAddressValueClass = (*env)->FindClass(env,"CLIPSJNI/FactAddressValue");
   theInstanceAddressValueClass = (*env)->FindClass(env,"CLIPSJNI/InstanceAddressValue");