#include "aws_iot_shadow_json.h"
#include <string.h>
#include <stdbool.h>
#include <inttypes.h>
#include "AWS_SDK/aws_iot_src/utils/aws_iot_json_utils.h"
#include "AWS_SDK/aws_iot_src/utils/aws_iot_log.h"
#include "aws_iot_shadow_key.h"
#include "aws_iot_config.h"

Functions
IoT_Error_t	aws_iot_fill_with_client_token (char *pBufferToBeUpdatedWithClientToken, size_t maxSizeOfJsonDocument)
	Fill the given buffer with client token for tracking the Repsonse. More...

IoT_Error_t	aws_iot_finalize_json_document (char *pJsonDocument, size_t maxSizeOfJsonDocument)
	Finalize the JSON document with Shadow expected client Token. More...

IoT_Error_t	aws_iot_shadow_add_desired (char *pJsonDocument, size_t maxSizeOfJsonDocument, uint8_t count,...)
	Add the desired section of the JSON document of jsonStruct_t. More...

IoT_Error_t	aws_iot_shadow_add_reported (char *pJsonDocument, size_t maxSizeOfJsonDocument, uint8_t count,...)
	Add the reported section of the JSON document of jsonStruct_t. More...

IoT_Error_t	aws_iot_shadow_init_json_document (char *pJsonDocument, size_t maxSizeOfJsonDocument)
	Initialize the JSON document with Shadow expected name/value. More...

static IoT_Error_t	checkReturnValueOfSnPrintf (int32_t snPrintfReturn, size_t maxSizeOfJsonDocument)

static IoT_Error_t	convertDataToString (char pStringBuffer, size_t maxSizoStringBuffer, JsonPrimitiveType type, void pData)

static void	emptyJsonWithClientToken (char *pJsonDocument)

bool	extractClientToken (const char pJsonDocument, char pExtractedClientToken)

bool	extractVersionNumber (const char pJsonDocument, void pJsonHandler, int32_t tokenCount, uint32_t *pVersionNumber)

void	FillWithClientToken (char *pBufferToBeUpdatedWithClientToken)

int32_t	FillWithClientTokenSize (char *pBufferToBeUpdatedWithClientToken, size_t maxSizeOfJsonDocument)

void	iot_shadow_delete_request_json (char *pJsonDocument)

void	iot_shadow_get_request_json (char *pJsonDocument)

bool	isJsonKeyMatchingAndUpdateValue (const char pJsonDocument, void pJsonHandler, int32_t tokenCount, jsonStruct_t pDataStruct, uint32_t pDataLength, int32_t *pDataPosition)

bool	isJsonValidAndParse (const char pJsonDocument, void pJsonHandler, int32_t *pTokenCount)

bool	isReceivedJsonValid (const char *pJsonDocument)

void	resetClientTokenSequenceNum (void)

static IoT_Error_t	UpdateValueIfNoObject (const char pJsonString, jsonStruct_t pDataStruct, jsmntok_t token)

Variables
static uint32_t	clientTokenNum = 0

static jsmntok_t	jsonTokenStruct [MAX_JSON_TOKEN_EXPECTED]

char	mqttClientID [MAX_SIZE_OF_UNIQUE_CLIENT_ID_BYTES]

static jsmn_parser	shadowJsonParser

IoT_Error_t aws_iot_fill_with_client_token	(	char *	pBufferToBeUpdatedWithClientToken,
		size_t	maxSizeOfJsonDocument
	)

Fill the given buffer with client token for tracking the Repsonse.

This function will add the AWS_IOT_MQTT_CLIENT_ID with a sequence number. Every time this function is used the sequence number gets incremented

Parameters

pBufferToBeUpdatedWithClientToken	buffer to be updated with the client token string
maxSizeOfJsonDocument	maximum size of the pBufferToBeUpdatedWithClientToken that can be used

Returns: An IoT Error Type defining if the buffer was null or the entire string was not filled up

References checkReturnValueOfSnPrintf(), and FillWithClientTokenSize().

IoT_Error_t aws_iot_finalize_json_document	(	char *	pJsonDocument,
		size_t	maxSizeOfJsonDocument
	)

Finalize the JSON document with Shadow expected client Token.

This function will automatically increment the client token every time this function is called.

Note: Ensure the size of the Buffer is enough to hold the entire JSON Document. If the finalized section is not invoked then the JSON doucment will not be valid

Parameters

pJsonDocument	The JSON Document filled in this char buffer
maxSizeOfJsonDocument	maximum size of the pJsonDocument that can be used to fill the JSON document

Returns: An IoT Error Type defining if the buffer was null or the entire string was not filled up

References checkReturnValueOfSnPrintf(), FillWithClientTokenSize(), NONE_ERROR, NULL, NULL_VALUE_ERROR, SHADOW_CLIENT_TOKEN_STRING, and SHADOW_JSON_ERROR.

IoT_Error_t aws_iot_shadow_add_desired	(	char *	pJsonDocument,
		size_t	maxSizeOfJsonDocument,
		uint8_t	count,
			...
	)

Add the desired section of the JSON document of jsonStruct_t.

This is a variadic function and please be careful with the usage. count is the number of jsonStruct_t types that you would like to add in the reported section This function will add "desired":{<all the="" values="" that="" needs="" to="" be="" added>="">}

Note: Ensure the size of the Buffer is enough to hold the reported section + the init section. Always use the same JSON document buffer used in the iot_shadow_init_json_document function. This function will accommodate the size of previous null terminated string, so pass the max size of the buffer

Parameters

pJsonDocument	The JSON Document filled in this char buffer
maxSizeOfJsonDocument	maximum size of the pJsonDocument that can be used to fill the JSON document
count	total number of arguments(jsonStruct_t object) passed in the arguments

Returns: An IoT Error Type defining if the buffer was null or the entire string was not filled up

References checkReturnValueOfSnPrintf(), convertDataToString(), count, i, NONE_ERROR, NULL, NULL_VALUE_ERROR, jsonStruct::pData, jsonStruct::pKey, SHADOW_JSON_ERROR, and jsonStruct::type.

IoT_Error_t aws_iot_shadow_add_reported	(	char *	pJsonDocument,
		size_t	maxSizeOfJsonDocument,
		uint8_t	count,
			...
	)

Add the reported section of the JSON document of jsonStruct_t.

This is a variadic function and please be careful with the usage. count is the number of jsonStruct_t types that you would like to add in the reported section This function will add "reported":{<all the="" values="" that="" needs="" to="" be="" added>="">}

Note: Ensure the size of the Buffer is enough to hold the reported section + the init section. Always use the same JSON document buffer used in the iot_shadow_init_json_document function. This function will accommodate the size of previous null terminated string, so pass teh max size of the buffer

Parameters

pJsonDocument	The JSON Document filled in this char buffer
maxSizeOfJsonDocument	maximum size of the pJsonDocument that can be used to fill the JSON document
count	total number of arguments(jsonStruct_t object) passed in the arguments

Returns: An IoT Error Type defining if the buffer was null or the entire string was not filled up

References checkReturnValueOfSnPrintf(), convertDataToString(), count, i, NONE_ERROR, NULL, NULL_VALUE_ERROR, jsonStruct::pData, jsonStruct::pKey, SHADOW_JSON_ERROR, and jsonStruct::type.

IoT_Error_t aws_iot_shadow_init_json_document	(	char *	pJsonDocument,
		size_t	maxSizeOfJsonDocument
	)

Initialize the JSON document with Shadow expected name/value.

This Function will fill the JSON Buffer with a null terminated string. Internally it uses snprintf This function should always be used First, followed by iot_shadow_add_reported and/or iot_shadow_add_desired. Always finish the call sequence with iot_finalize_json_document

Note: Ensure the size of the Buffer is enough to hold the entire JSON Document.

Parameters

pJsonDocument	The JSON Document filled in this char buffer
maxSizeOfJsonDocument	maximum size of the pJsonDocument that can be used to fill the JSON document

Returns: An IoT Error Type defining if the buffer was null or the entire string was not filled up

References checkReturnValueOfSnPrintf(), NONE_ERROR, NULL, and NULL_VALUE_ERROR.

static IoT_Error_t checkReturnValueOfSnPrintf	(	int32_t	snPrintfReturn,
		size_t	maxSizeOfJsonDocument
	)

inlinestatic

References NONE_ERROR, SHADOW_JSON_BUFFER_TRUNCATED, and SHADOW_JSON_ERROR.

Referenced by aws_iot_fill_with_client_token(), aws_iot_finalize_json_document(), aws_iot_shadow_add_desired(), aws_iot_shadow_add_reported(), aws_iot_shadow_init_json_document(), and convertDataToString().

static IoT_Error_t convertDataToString	(	char *	pStringBuffer,
		size_t	maxSizoStringBuffer,
		JsonPrimitiveType	type,
		void *	pData
	)

static

References checkReturnValueOfSnPrintf(), NONE_ERROR, SHADOW_JSON_BOOL, SHADOW_JSON_DOUBLE, SHADOW_JSON_ERROR, SHADOW_JSON_FLOAT, SHADOW_JSON_INT16, SHADOW_JSON_INT32, SHADOW_JSON_INT8, SHADOW_JSON_STRING, SHADOW_JSON_UINT16, SHADOW_JSON_UINT32, and SHADOW_JSON_UINT8.

Referenced by aws_iot_shadow_add_desired(), and aws_iot_shadow_add_reported().

static void emptyJsonWithClientToken ( char * pJsonDocument )

static

References FillWithClientToken().

Referenced by iot_shadow_delete_request_json(), and iot_shadow_get_request_json().

bool extractClientToken	(	const char *	pJsonDocument,
		char *	pExtractedClientToken
	)

References jsmntok_t::end, i, jsmn_init(), JSMN_OBJECT, jsmn_parse(), jsoneq(), length, SHADOW_CLIENT_TOKEN_STRING, jsmntok_t::start, strncpy(), and WARN.

Referenced by AckStatusCallback(), and iot_shadow_action().

bool extractVersionNumber	(	const char *	pJsonDocument,
		void *	pJsonHandler,
		int32_t	tokenCount,
		uint32_t *	pVersionNumber
	)

References jsmntok_t::end, i, jsoneq(), NONE_ERROR, parseUnsignedInteger32Value(), SHADOW_VERSION_STRING, and jsmntok_t::start.

Referenced by AckStatusCallback(), and shadow_delta_callback().

void FillWithClientToken ( char * pBufferToBeUpdatedWithClientToken )

References clientTokenNum, and mqttClientID.

Referenced by emptyJsonWithClientToken().

int32_t FillWithClientTokenSize	(	char *	pBufferToBeUpdatedWithClientToken,
		size_t	maxSizeOfJsonDocument
	)

References clientTokenNum, and mqttClientID.

Referenced by aws_iot_fill_with_client_token(), and aws_iot_finalize_json_document().

void iot_shadow_delete_request_json ( char * pJsonDocument )

References emptyJsonWithClientToken().

Referenced by aws_iot_shadow_delete().

void iot_shadow_get_request_json ( char * pJsonDocument )

References emptyJsonWithClientToken().

Referenced by aws_iot_shadow_get().

bool isJsonKeyMatchingAndUpdateValue	(	const char *	pJsonDocument,
		void *	pJsonHandler,
		int32_t	tokenCount,
		jsonStruct_t *	pDataStruct,
		uint32_t *	pDataLength,
		int32_t *	pDataPosition
	)