#include <string.h>
#include <sys/types.h>
#include <dirent.h>
#include <errno.h>

#include "log_pty.h"
#include "log_types.h"
#include "log_common.h"

#define LOG_DEV_PTY_DIR             LOG_DEV_DIR"pts/"
#define LOG_CONF_PTY_FILE_NAME      "log-pty.conf"


static int write_pty_content(FILE *fp, const u8 level, const char *filter_mod, void *arg)
{
    DIR *dir;
    
    if ((dir = opendir(LOG_DEV_PTY_DIR)) == NULL) {
        ULOG_ERR(g_log, "Open dir:[%s] is failure:%d\n", LOG_DEV_PTY_DIR, strerror(errno));
        return -1;
    }

    struct dirent *ptr;
    char path[MAX_PATH_SZ];
    while ((ptr = readdir(dir)) != NULL) {
        if ((strcmp(ptr->d_name, ".") == 0) 
            || (strcmp(ptr->d_name, "..") == 0)
            || (ptr->d_type == DT_DIR)) {   ///current dir OR parrent dir
            ULOG_DEBUG(g_log,"The file:[%s] or directory jump over\n", ptr->d_name);
            continue;
        } 

        if (strstr(ptr->d_name, "ptmx") != NULL) {
            ULOG_DEBUG(g_log,"The file:[%s] isn't redirected\n", ptr->d_name);
            continue;
        }

        ULOG_DEBUG(g_log, "pty name:%s", ptr->d_name);
        if (snprintf(path, sizeof(path), "%s%s", LOG_DEV_PTY_DIR, ptr->d_name) < 0) {
            ULOG_ERR(g_log, "Setting pty of log[%s] is failure", ptr->d_name);
            return -1;
        }
        if (write_conf_content_authorizing(fp, level, filter_mod, path) != 0) {
            ULOG_ERR(g_log, "Writing pty[module:%s] of log is failure", filter_mod);
            return -1;
        }
        
    }    

    return 0;
}

static int config_log_pty(const log_pty_t *conf)
{
    if (log_conf(conf->level, LOG_CONF_PATH, LOG_CONF_PTY_FILE_NAME, conf->module_name, 
            write_pty_content, NULL) != 0) {
        ULOG_ERR(g_log, "Log's pty configure which is written is failure");
        return -1;
    } 

    return 0;
}

void rpc_conf_log_pty(rpc_conn *conn, pointer input, int input_len,	pointer data)
{
    u32 need_len = sizeof(log_pty_t);
    if (input_len < need_len) {
        ULOG_WARNING(g_log, 
               "The input paramter of rpc log pty is needed length of %u, but the actual length is %u",
               need_len, input_len);
        return;
    }

    config_log_pty((const log_pty_t *)input);
}