/*
   Copyright 2016-2019 Bo Zimmerman

   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.
*/
#ifndef ZHEADER_SEROUT_H
#define ZHEADER_SEROUT_H

#define DBG_BYT_CTR 20

#define SER_WRITE_BUFSIZE 4096

enum FlowControlType
{
  FCT_RTSCTS=0,
  FCT_NORMAL=1,
  FCT_AUTOOFF=2,
  FCT_MANUAL=3,
  FCT_DISABLED=4,
  FCT_INVALID=5
};

static bool enableRtsCts = true;
#ifdef ZIMODEM_ESP32
#  define SER_BUFSIZE 0x7F
#else
#  define SER_BUFSIZE 128
#endif
static uint8_t TBUF[SER_WRITE_BUFSIZE];
static char FBUF[256];
static int TBUFhead=0;
static int TBUFtail=0;
static int serialDelayMs = 0;

static void serialDirectWrite(uint8_t c);
static void serialOutDeque();
static int serialOutBufferBytesRemaining();
static void clearSerialOutBuffer();

class ZSerial : public Stream
{
  private:
    bool petsciiMode = false;
    FlowControlType flowControlType=DEFAULT_FCT;
    bool XON_STATE=true;
    void enqueByte(uint8_t c);
  public:
    ZSerial();
    void setPetsciiMode(bool petscii);
    bool isPetsciiMode();
    void setFlowControlType(FlowControlType type);
    FlowControlType getFlowControlType();
    void setXON(bool isXON);
    bool isXON();
    bool isSerialOut();
    bool isSerialHalted();
    bool isSerialCancelled();
    bool isPacketOut();
    int getConfigFlagBitmap();
    
    void prints(String str);
    void prints(const char *expr);
    void printc(const char c);
    void printc(uint8_t c);
    virtual size_t write(uint8_t c);
    size_t write(uint8_t *buf, int bufSz);
    void printb(uint8_t c);
    void printd(double f);
    void printi(int i);
    void printf(const char* format, ...);
    void flush();
    void flushAlways();
    int availableForWrite();
    char drainForXonXoff();

    virtual int available();
    virtual int read();
    virtual int peek();
};

#endif