#include "pattern_replace.h"

#include <sys/types.h>//fstat
#include <sys/ioctl.h>
#include <string.h>
#include <stdio.h>
#include <gtest/gtest.h>

static void simple_replace(const char* find, const char* replacement, const char* input, size_t in_sz, char** output, size_t *output_sz)
{
	char* exec_para=NULL;
	asprintf(&exec_para,"zone=http_resp_body;substitute=/%s/%s", find, replacement);
	size_t n_got_rule=0;
	struct replace_rule rules[16];
	n_got_rule=format_replace_rule(exec_para, rules, sizeof(rules)/sizeof(rules[0]));
	*output_sz=execute_replace_rule(input, strlen(input), kZoneResponseBody, rules, n_got_rule, output);
	free(exec_para);
	return;
}
TEST(PatternReplace, Grouping)
{
	const char* find="(?<name1>John)|(?<name2>李梅梅)|(?<name3>Jake)";
	const char* replacement="${name1:+Joseph:${name2:+王桃花:Keith}}";
	const char* input="John loves 李梅梅, 李梅梅 loves Jake and Jake doesn't care about John and 李梅梅.";
	const char* expect="Joseph loves Jessica, Jessica loves Keith and Keith doesn't care about Joseph and Jessica.";
	char* output=NULL;
	size_t output_sz=0;

	simple_replace(find, replacement, input, strlen(input),&output, &output_sz);
	EXPECT_TRUE(output_sz>0);
//	EXPECT_STREQ(output, expect);
	printf("%s\n", output);
	free(output);
	return;
}

TEST(PatternReplace, Non_Zero_Terminated)
{
	const char* filename="./test_data/facebook_index.html";
	char fn_replaced[256];
	const char* find="添加手机号";
	const char* replacement="Add a Mobile Phone Number";

	FILE* fp=NULL;
	struct stat file_info;	
	stat(filename, &file_info);
	size_t input_sz=file_info.st_size;
	
	fp=fopen(filename,"r");
	ASSERT_FALSE(fp==NULL);
	if(fp==NULL)
	{
		return;
	}
	char* input=(char*)malloc(input_sz);
	fread(input,1,input_sz,fp);
	fclose(fp);

	char* output=NULL;
	size_t output_sz=0;
	simple_replace(find, replacement, input, input_sz, &output, &output_sz);

	EXPECT_TRUE(output_sz>0);
	EXPECT_TRUE(NULL==memmem(output, output_sz, find, strlen(find)));
	EXPECT_TRUE(NULL!=memmem(output, output_sz, replacement, strlen(replacement)));
	snprintf(fn_replaced,sizeof(fn_replaced), "%s.replaced", filename);
	fp=fopen(fn_replaced, "w");
	fwrite(output, 1,output_sz, fp);
	fclose(fp);
	free(output);
	return;
}

TEST(PatternReplace, ASCII)
{
	const char* find="James";
	const char* replacement="John";
	const char* input="James, where are you? Alice is calling you.";
	char* output=NULL;
	size_t output_sz=0;

	simple_replace(find, replacement, input, strlen(input),&output, &output_sz);
	EXPECT_TRUE(output_sz>0);
	EXPECT_TRUE(NULL==strstr(output, find));
	EXPECT_TRUE(NULL!=strstr(output, replacement));

//	printf("%s\n", output);
	free(output);
	return;
}

TEST(PatternReplace, UTF8)
{
	const char* find="视频";
	const char* replacement="短片";
	const char* input="欢迎来到 Facebook开始添加好友吧！他们的视频、照片和帖子都会显示在这里。";
	char* output=NULL;
	size_t output_sz=0;

	simple_replace(find, replacement, input, strlen(input),&output, &output_sz);
	EXPECT_TRUE(output_sz>0);
	EXPECT_TRUE(NULL==strstr(output, find));
	EXPECT_TRUE(NULL!=strstr(output, replacement));

//	printf("%s\n", output);
	free(output);
	return;
}


int main(int argc, char ** argv)
{

	::testing::InitGoogleTest(&argc, argv);	
	return RUN_ALL_TESTS();
}