/*
 * Copyright (C) 2026 OpenGD77 contributors
 *
 * Receiving DMR packet data (SMS) while the radio is used as a radio, rather than
 * as a hotspot modem.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer
 *    in the documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * 4. Use of this source code or binary releases for commercial purposes is strictly forbidden. This includes, without limitation,
 *    incorporation in a commercial product or incorporation into a product or project which allows commercial use.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
 * HOLDER 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.
 */
#ifndef _OPENGD77_SMS_H_
#define _OPENGD77_SMS_H_

#include <stdint.h>
#include <stdbool.h>

// A single received message, as shown to the user.
#define SMS_MAX_TEXT_LENGTH   160
// Longest message we are willing to assemble. Each rate 1/2 block carries 10 bytes of
// payload once the confirmed-mode overhead is removed, so this covers a full 160 char
// message with room for the IP/UDP/TMS wrapper around it.
#define SMS_MAX_BLOCKS        32

typedef struct
{
	uint32_t srcId;
	uint32_t dstId;
	bool     isPrivate;
	bool     unread;
	char     text[SMS_MAX_TEXT_LENGTH + 1];
} smsMessage_t;

/*
 * Called from the HR-C6000 interrupt for every received data burst while the radio is
 * NOT acting as a hotspot modem. Must stay short: it only copies the burst away and
 * flags it, all parsing happens later in smsTick().
 *
 * payload  - the 12 byte (96 bit) burst payload as read from the chip
 * dataType - DMR data type of the burst (DT_CSBK / DT_DATA_HEADER / DT_RATE_12_DATA)
 */
void smsRxHandleBurst(const uint8_t *payload, uint8_t dataType);

/*
 * Runs from normal task context. Turns collected bursts into a message and, when one
 * completes, stores it and raises smsHasUnread().
 */
void smsTick(void);

void smsInit(void);

// Most recently received message, or NULL when nothing has been received yet.
const smsMessage_t *smsGetLatest(void);

bool smsHasUnread(void);
void smsMarkRead(void);

#endif