#include <cjson/cJSON.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>

#include "json.h"

char *json2txt(char *json)
{
	const cJSON *personalDataJSON = NULL;
	const cJSON *documentTypeJSON = NULL;
	const cJSON *issuingStateJSON = NULL;
	const cJSON *dateOfExpiryJSON = NULL;
	const cJSON *givenNamesJSON = NULL;
	const cJSON *familyNamesJSON = NULL;
	const cJSON *artisticNameJSON = NULL;
	const cJSON *academicTitleJSON = NULL;
	const cJSON *placeOfBirthJSON = NULL;
	const cJSON *nationalityJSON = NULL;
	const cJSON *birthNameJSON = NULL;
	const cJSON *streetJSON = NULL;
	const cJSON *cityJSON = NULL;
	const cJSON *countryJSON = NULL;
	const cJSON *zipCodeJSON = NULL;
	const cJSON *residencePermitJSON = NULL;
	const cJSON *dateOfBirthJSON = NULL;
	char *ret;

	cJSON *eidJSON = cJSON_Parse(json);

	if (eidJSON == NULL)
	{
		const char *error_ptr = cJSON_GetErrorPtr();

		if (error_ptr != NULL)
		{
			fprintf(stderr, "Error before: %s\n", error_ptr);
		}

		ret = NULL;
		goto end;
	}

	personalDataJSON = cJSON_GetObjectItemCaseSensitive(eidJSON, "PersonalData");

	if (personalDataJSON == NULL)
	{
		const char *error_ptr = cJSON_GetErrorPtr();

		if (error_ptr != NULL)
		{
			fprintf(stderr, "Error before: %s\n", error_ptr);
		}

		ret = NULL;;
		goto end;
	}

	documentTypeJSON = cJSON_GetObjectItemCaseSensitive(personalDataJSON, "DocumentType");
	issuingStateJSON = cJSON_GetObjectItemCaseSensitive(personalDataJSON, "IssuingState");
	dateOfExpiryJSON = cJSON_GetObjectItemCaseSensitive(personalDataJSON, "DateOfExpiry");
	givenNamesJSON = cJSON_GetObjectItemCaseSensitive(personalDataJSON, "GivenNames");
	familyNamesJSON = cJSON_GetObjectItemCaseSensitive(personalDataJSON, "FamilyNames");
	artisticNameJSON = cJSON_GetObjectItemCaseSensitive(personalDataJSON, "ArtisticName");
	academicTitleJSON = cJSON_GetObjectItemCaseSensitive(personalDataJSON, "AcademicTitle");
	placeOfBirthJSON = cJSON_GetObjectItemCaseSensitive(cJSON_GetObjectItemCaseSensitive(personalDataJSON, "PlaceOfBirth"), "FreetextPlace");
	nationalityJSON =  cJSON_GetObjectItemCaseSensitive(personalDataJSON, "Nationality");
	birthNameJSON =  cJSON_GetObjectItemCaseSensitive(personalDataJSON, "BirthName");
	streetJSON = cJSON_GetObjectItemCaseSensitive(cJSON_GetObjectItemCaseSensitive(cJSON_GetObjectItemCaseSensitive(personalDataJSON, "PlaceOfResidence"), "Structured Place"), "Street");
	cityJSON = cJSON_GetObjectItemCaseSensitive(cJSON_GetObjectItemCaseSensitive(cJSON_GetObjectItemCaseSensitive(personalDataJSON, "PlaceOfResidence"), "Structured Place"), "City");
	countryJSON = cJSON_GetObjectItemCaseSensitive(cJSON_GetObjectItemCaseSensitive(cJSON_GetObjectItemCaseSensitive(personalDataJSON, "PlaceOfResidence"), "Structured Place"), "Country");
	zipCodeJSON = cJSON_GetObjectItemCaseSensitive(cJSON_GetObjectItemCaseSensitive(cJSON_GetObjectItemCaseSensitive(personalDataJSON, "PlaceOfResidence"), "Structured Place"), "ZipCode");
	residencePermitJSON = cJSON_GetObjectItemCaseSensitive(personalDataJSON, "ResidencePermit");
	dateOfBirthJSON = cJSON_GetObjectItemCaseSensitive(personalDataJSON, "DateOfBirth");

	if ((ret = (char *) calloc(1024, sizeof(char))) == NULL)
		goto end;

	if (cJSON_IsString(documentTypeJSON) && (documentTypeJSON->valuestring != NULL))
		sprintf(ret, "Document type:		%s\n", documentTypeJSON->valuestring);
	
	if (cJSON_IsString(issuingStateJSON) && (issuingStateJSON->valuestring != NULL))
		sprintf(ret + strlen(ret), "Issuing state:		%s\n", issuingStateJSON->valuestring);
	
	if (cJSON_IsString(dateOfExpiryJSON) && (dateOfExpiryJSON->valuestring != NULL))
		sprintf(ret + strlen(ret), "Date of expiry:		%s\n", dateOfExpiryJSON->valuestring);
	
	if (cJSON_IsString(givenNamesJSON) && (givenNamesJSON->valuestring != NULL))
		sprintf(ret + strlen(ret), "Given names:		%s\n", givenNamesJSON->valuestring);
	
	if (cJSON_IsString(familyNamesJSON) && (familyNamesJSON->valuestring != NULL))
		sprintf(ret + strlen(ret), "Family names:		%s\n", familyNamesJSON->valuestring);
	
	if (cJSON_IsString(artisticNameJSON) && (artisticNameJSON->valuestring != NULL))
		sprintf(ret + strlen(ret), "Artistic name:		%s\n", artisticNameJSON->valuestring);
	
	if (cJSON_IsString(academicTitleJSON) && (academicTitleJSON->valuestring != NULL))
		sprintf(ret + strlen(ret), "Academic title:		%s\n", academicTitleJSON->valuestring);
	
	if (cJSON_IsString(placeOfBirthJSON) && (placeOfBirthJSON->valuestring != NULL))
		sprintf(ret + strlen(ret), "Place of birth:		%s\n", placeOfBirthJSON->valuestring);
	
	if (cJSON_IsString(nationalityJSON) && (nationalityJSON->valuestring != NULL))
		sprintf(ret + strlen(ret), "Nationality:		%s\n", nationalityJSON->valuestring);
	
	if (cJSON_IsString(birthNameJSON) && (birthNameJSON->valuestring != NULL))
		sprintf(ret + strlen(ret), "Birth name:		%s\n", birthNameJSON->valuestring);
	 
	if (cJSON_IsString(streetJSON) && (streetJSON->valuestring != NULL))
		sprintf(ret + strlen(ret), "Street:			%s\n", streetJSON->valuestring);
	 
	if (cJSON_IsString(cityJSON) && (cityJSON->valuestring != NULL))
		sprintf(ret + strlen(ret), "City:			%s\n", cityJSON->valuestring);
	 
	if (cJSON_IsString(countryJSON) && (countryJSON->valuestring != NULL))
		sprintf(ret + strlen(ret), "Country:		%s\n", countryJSON->valuestring);
	 
	if (cJSON_IsString(zipCodeJSON) && (zipCodeJSON->valuestring != NULL))
		sprintf(ret + strlen(ret), "Zip code:		%s\n", zipCodeJSON->valuestring);
	 
	if (cJSON_IsString(residencePermitJSON) && (residencePermitJSON->valuestring != NULL))
		sprintf(ret + strlen(ret), "Residence permit:	%s\n", residencePermitJSON->valuestring);
	
	if (cJSON_IsString(dateOfBirthJSON) && (dateOfBirthJSON->valuestring != NULL))
		sprintf(ret + strlen(ret), "Date of birth:		%s\n", dateOfBirthJSON->valuestring);
	
end:
	cJSON_Delete(eidJSON);
	return ret;
}