#include "Maat_rule.h"
#include "Maat_command.h"
#include "Maat_rule_internal.h"
#include "cJSON.h"
#include "json2iris.h"
#include "config_monitor.h"
#include "hiredis.h"
#include <MESA/MESA_handle_logger.h>
#include <unistd.h>
#include <stdio.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
const char* redis_dump_dir="./redis_dump";
const char* default_table_info="./table_info.conf";
void maat_tool_print_usage(void)
{
	printf("maat_redis_tool manipulate rules from redis.\n");
	printf("Usage:\n");
	printf("\t-h [host], redis IP, 127.0.0.1 as default.\n");
	printf("\t-p [port], redis port, 6379 as default.\n");
	printf("\t-n [db], redis db, 0 as default.\n");
	printf("\t-d [dir], dump rules from redis to [dir], %s as default.\n",redis_dump_dir);
	printf("\t-v [version], dump specific [version] from redis, dump latest version as default.\n");
	printf("\t-j [payload.json], add or delete rules as maat json. Must have field compile_table field, and plugin table's valid flag must be in the last column.\n");
	printf("\t-t [timeout], timeout config after t seconds, default is 0 which means never timeout.\n");	
	printf("example: ./maat_redis_tool -h 127.0.0.1 -p 6379 -d %s\n",redis_dump_dir);
	printf("	./maat_redis_tool -h 127.0.0.1 -p 6379 -j payload.json -t 300\n");
	return;
}
static int compare_serial_rule(const void *a, const void *b)
{
	struct serial_rule_t *ra=(struct serial_rule_t *)a;
	struct serial_rule_t *rb=(struct serial_rule_t *)b;

	char p_str[256],q_str[256];
	snprintf(p_str,sizeof(p_str),"%s.%ld",ra->table_name,ra->rule_id);
	snprintf(q_str,sizeof(q_str),"%s.%ld",rb->table_name,rb->rule_id);
	return strcmp(p_str,q_str);
}
static redisContext * connect_redis(const char*redis_ip, int redis_port, int redis_db)
{
	struct timeval connect_timeout;
	connect_timeout.tv_sec=0;
	connect_timeout.tv_usec=100*1000; // 100 ms
	redisReply* reply=NULL;

	redisContext * ctx;
	ctx=redisConnectWithTimeout(redis_ip, redis_port,connect_timeout);
	if(ctx==NULL||ctx->err)
	{
		printf("Unable to connect %s:%d db%d : %s\n",redis_ip,redis_port,redis_db, ctx==NULL?"Unknown":ctx->errstr);
		return NULL;
	}
	reply=_wrap_redisCommand(ctx, "select %d",redis_db);
	freeReplyObject(reply);

	return ctx;

}
void read_rule_from_redis(redisContext * ctx, long long desire_version, const char* output_path ,void*logger)
{
	struct serial_rule_t* rule_list;
	int rule_num=0,line_count=0;
	int i=0,ret=0;
	int update_type=CM_UPDATE_TYPE_INC;
	long long version=0;
	const char* cur_table=NULL;

	char table_path[256],index_path[256];
	FILE *table_fp=NULL, *index_fp=NULL;
	rule_num=get_rm_key_list(ctx, 0, desire_version, &version, &rule_list, &update_type, logger,0);
	if(desire_version!=0)
	if(rule_num==0)
	{
		if(desire_version!=0)
		{
			printf("Read desired version %lld failed.\n",desire_version);
		}
		else
		{
			printf("No Effective Rules.\n");
		}
		return;
	}
	if(rule_num<0)
	{
		printf("Read Redis Error.\n");
		return;
	}

	assert(update_type==CM_UPDATE_TYPE_FULL);
	printf("MAAT Version: %lld, key number: %d\n", version, rule_num);
	if(rule_num==0)
	{
		goto clean_up;
	}
	printf("Reading value: ");
	ret=get_maat_redis_value(ctx,rule_list,rule_num,logger,1);
	if(ret<0)
	{
		goto clean_up;
	}
	printf("Sorting.\n");
	qsort(rule_list,rule_num, sizeof(struct serial_rule_t),
                  compare_serial_rule);
	if((access(output_path,F_OK)) <0)

	{	if((mkdir(output_path,S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH)) < 0)
		printf("mkdir %s error\n",output_path);

	}
	char foreign_files_dir[256];
	snprintf(foreign_files_dir, sizeof(foreign_files_dir), "%s/foreign_files/",output_path);
	if((access(foreign_files_dir,F_OK)) <0)

	{	if((mkdir(foreign_files_dir,S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH)) < 0)
		printf("mkdir %s error\n",foreign_files_dir);

	}
	ret=get_foreign_keys_by_prefix(ctx, rule_list, rule_num, foreign_files_dir, logger);
	if(ret>0)
	{
		printf("%d lines has foreign content.\n", ret);
		get_foreign_conts(ctx, rule_list, rule_num, 1, logger);
	}
	snprintf(index_path,sizeof(index_path),"%s/full_config_index.%020lld",output_path,version);
	index_fp=fopen(index_path,"w");
	if(index_fp==NULL)
	{
		printf("Open %s failed.\n",index_path);
		goto clean_up;
	}

	for(i=0;i<rule_num;i++)
	{
		if(rule_list[i].n_foreign>0)
		{
			rewrite_table_line_with_foreign(rule_list+i);
		}
		if(cur_table==NULL||0!=strcmp(cur_table,rule_list[i].table_name))
		{
			if(table_fp!=NULL)
			{
				fprintf(index_fp,"%s\t%d\t%s\n",cur_table,line_count,table_path);
				fclose(table_fp);
				table_fp=NULL;
				set_file_rulenum(table_path,line_count, logger);
				line_count=0;
				printf("Written table %s\n",table_path);
			}
			snprintf(table_path,sizeof(table_path),"%s/%s.%020lld",output_path,rule_list[i].table_name,version);
			set_file_rulenum(table_path, 0, logger);
			table_fp=fopen(table_path,"a");
			if(table_fp==NULL)
			{
				printf("Open %s failed.\n",table_path);
				goto clean_up;
			}
			
			cur_table=rule_list[i].table_name;
		}
		fprintf(table_fp,"%s\tkey=%ld\n",rule_list[i].table_line,rule_list[i].rule_id);
		line_count++;
	}
	fclose(table_fp);
	table_fp=NULL;
	fprintf(index_fp,"%s\t%d\t%s\n",cur_table,line_count,table_path);
	set_file_rulenum(table_path,line_count, logger);
	
	printf("Written complete: %s\n",index_path);
clean_up:
	for(i=0;i<rule_num;i++)
	{
		empty_serial_rules(rule_list+i);
	}
	free(rule_list);
	rule_list=NULL;
	if(ctx!=NULL)
	{
		redisFree(ctx);
	}
	if(index_fp!=NULL)
	{
		fclose(index_fp);
	}
	if(table_fp!=NULL)
	{
		fclose(table_fp);
	}
	return;
}
int count_line_num(const char* table_name,const char* line,void *u_para)
{
	(*((int *)u_para))++;
	return 0;
}
int line_idx=0;
long long server_time=0,absolute_expire_time=0;
char compile_table_name[128];
int make_serial_rule(const char* table_name,const char* line,void *u_para)
{
	struct serial_rule_t* s_rule=(struct serial_rule_t*)u_para;
	int rule_id=0,is_valid=0;
	char *str1=NULL, *token=NULL;
	char *saveptr1=NULL,*last1=NULL;
	int j=0;
	char *buff=(char*)malloc(strlen(line)+1);
	memcpy(buff,line, strlen(line)+1);
	while(buff[strlen(buff)-1]=='\n'||buff[strlen(buff)-1]=='\t')
	{
		buff[strlen(buff)-1]='\0';
	}

	for (j = 0,str1=buff; ; j++, str1 = NULL) {
		 token = strtok_r(str1, "\t ", &saveptr1);
		 if (token == NULL)
			 break;
		 if(j==0)
		 {
			sscanf(token,"%d",&rule_id);
		 }
		 last1=token;
 	 }
	sscanf(last1,"%d",&is_valid);
	
	memcpy(buff,line, strlen(line)+1);
	while(buff[strlen(buff)-1]=='\n'||buff[strlen(buff)-1]=='\t')
	{
		buff[strlen(buff)-1]='\0';
	}
	//printf("Writing table %s, rule_id=%d, timeout=%lld, is_valid=%d\n", table_name, rule_id,absolute_expire_time,is_valid);
	set_serial_rule(s_rule+line_idx, (enum MAAT_OPERATION)is_valid, rule_id, 0, table_name, buff, absolute_expire_time);
	line_idx++;
	free(str1);
	return 0;
}

#define	WORK_MODE_DUMP	0
#define WORK_MODE_JSON	1
int main(int argc, char * argv[])
{
	int oc=0,ret=0, i=0,success_cnt=0;
	int model=0;
	char redis_ip[64];
	int redis_port=6379;
	int redis_db=0;
	strncpy(redis_ip,"127.0.0.1",sizeof(redis_ip));
	char dump_dir[128], json_file[128], tmp_iris_path[128];
	strncpy(dump_dir,redis_dump_dir,sizeof(dump_dir));
	redisContext * ctx=NULL;
	int total_line_cnt=0;
	int timeout=0;
	FILE* json_fp=NULL;
	cJSON *json=NULL, *tmp_obj=NULL;
	struct stat fstat_buf;
	unsigned long json_file_size=0,read_size=0;
	long long desired_version=0;
	char* json_buff=NULL;

	while((oc=getopt(argc,argv,"h:p:n:d:v:f:j:t:"))!=-1)
	{
		switch(oc)
		{
			case 'h':
				strncpy(redis_ip,optarg,sizeof(redis_ip));
				break;
			case 'p':
				sscanf(optarg,"%d",&redis_port);
				break;
			case 'n':
				sscanf(optarg,"%d",&redis_db);
				break;
			case 'd':
				model=WORK_MODE_DUMP;
				strncpy(dump_dir,optarg,sizeof(dump_dir));
				if(dump_dir[strlen(dump_dir)-1]=='/')
				{
					dump_dir[strlen(dump_dir)-1]='\0';
				}
				break;
			case 'v':
				sscanf(optarg,"%lld",&desired_version);
				break;
			case 'j':
				strncpy(json_file, optarg,sizeof(json_file));
				model=WORK_MODE_JSON;
				ret=stat(json_file, &fstat_buf);
				if(ret!=0)
				{
					printf("fstat file %s error.\n",json_file);
					return -1;
				}				
				json_fp=fopen(json_file,"r");
				if(json_fp==NULL)
				{
					printf("fopen file %s error %s.\n",json_file,strerror(errno));
					return -1;
				}
				json_file_size=fstat_buf.st_size;
				json_buff=(char*)calloc(1,json_file_size);
				read_size=fread(json_buff,1,json_file_size,json_fp);
				if(read_size!=json_file_size)
				{
					printf("fread file %s error.",json_file);
					return -1;
				}

				json=cJSON_Parse(json_buff);
				if (!json)
				{
					printf("%s format is error before: %-200.200s",json_file,cJSON_GetErrorPtr());
					return -1;
				}
				tmp_obj=cJSON_GetObjectItem(json,"compile_table");
				if(tmp_obj==NULL)
				{
					printf("No \"compile_table\" in %s.\n",json_file);
					return -1;
				}
				strncpy(compile_table_name,tmp_obj->valuestring,sizeof(compile_table_name));
				free(json_buff);
				cJSON_Delete(json);
				fclose(json_fp);
				break;
			case 't':
				sscanf(optarg,"%d",&timeout);
				break;
			case '?':
			default:
				maat_tool_print_usage();
				return 0;
				break;
		}
	}
	ctx=connect_redis(redis_ip,redis_port, redis_db);
	if(ctx==NULL)
	{
		return -1;
	}
	if(model==WORK_MODE_DUMP)
	{
		printf("Reading key list from %s:%d db%d.\n",redis_ip,redis_port,redis_db);
		read_rule_from_redis(ctx,desired_version,dump_dir, NULL);
	}
	else if(model==WORK_MODE_JSON)
	{		
		ret=json2iris(json_file, NULL, NULL, ctx, tmp_iris_path, sizeof(tmp_iris_path), NULL);
		if(ret<0)
		{
			printf("Invalid json format.\n");
		}
		total_line_cnt=0;
		config_monitor_traverse(0, tmp_iris_path, NULL, count_line_num, NULL, &total_line_cnt,NULL, NULL);
		printf("Serialize %s to %d lines, write temp file to %s .\n",json_file, total_line_cnt, tmp_iris_path);
		struct serial_rule_t * s_rule=(struct serial_rule_t *)calloc(sizeof(struct serial_rule_t),total_line_cnt);
		server_time=redis_server_time(ctx);
		if(timeout>0)
		{
			absolute_expire_time=server_time+timeout;
		}
		config_monitor_traverse(0, tmp_iris_path, NULL, make_serial_rule, NULL, s_rule,NULL, NULL);
		printf("Timeout=%lld\n",absolute_expire_time);
		ret=0;
		do
		{
			success_cnt=exec_serial_rule(ctx,s_rule, total_line_cnt, server_time, NULL);
		}while(success_cnt<0);
		if(success_cnt!=total_line_cnt)
		{
			printf("Only Add %d of %d, rule id maybe conflicts.\n",success_cnt,total_line_cnt);
		}
		for(i=0;i<total_line_cnt;i++)
		{
			empty_serial_rules(s_rule+i);
		}
		free(s_rule);
		
		redisFree(ctx);
	}

	return 0;
}