#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <string>

#include "configuration.h"
#include "miniwebcam.h"
#include "json.h"

Configuration config;

/*
 * Setup default values for all configuration options
 */
Configuration::Configuration() {
    http_port = DEFAULT_HTTP_PORT;
    https_port = DEFAULT_HTTPS_PORT;
    filename = DEFAULT_CONFIG_FILE;
    runasdaemon = 0;

    initflags = 0;
};

Configuration::~Configuration() {
};


/*
 * print current configuration
 */
int Configuration::PrintConfig() {
    JSONParse jp;

    //
    // save current language and set to default C
    std::string savedlocale = setlocale(LC_ALL, NULL);
    setlocale (LC_ALL, "C");

    jp.AddObject("http_port", http_port);
    jp.AddObject("https_port", https_port);

    //
    // output the json string
    printf ("%s\n", jp.ToString().c_str());

    //
    // restore language
    setlocale (LC_ALL, savedlocale.c_str());

    return 1;
};


int Configuration::LoadFile(std::string fn) {
    JSONParse jp;
    int i;

    //
    // save current language and set to default C
    std::string savedlocale = setlocale(LC_ALL, NULL);
    setlocale (LC_ALL, "C");

    // read from file
    if (jp.LoadFromFile(fn) != 0) {
        fprintf (stderr, "Could not read json file '%s'. Error: %s\n", fn.c_str(), strerror(errno));
        return 0;
    }

    if (jp.GetValueInt("http_port", &i))        http_port = i;
    if (jp.GetValueInt("https_port", &i))       https_port = i;

    //
    // restore language
    setlocale (LC_ALL, savedlocale.c_str());

    return 1;
}


int Configuration::LoadArgs(int argc, char **argv) {
    for (int i = 1; i < argc; i++) {
        if (strcmp(argv[i], "-F") == 0) runasdaemon = 0;
        if (strcmp(argv[i], "-D") == 0) runasdaemon = 1;

        if (strcmp(argv[i], "-dump_config") == 0) initflags |= CONF_INITFLAGS_PRINT;
        if (strcmp(argv[i], "-config") == 0) {
            if (++i < argc) {
                filename = argv[i];
            }
            else
                ErrorExit("config file missing", -1);
        }
        if (strcmp(argv[i], "-h") == 0) initflags |= CONF_INITFLAGS_HELP;

        if (strcmp(argv[i], "-http_port") == 0) {
            if (++i < argc) {
                http_port = atoi(argv[i]);
            }
            else
                ErrorExit("missing port parameter", -1);
        }
        if (strcmp(argv[i], "-https_port") == 0) {
            if (++i < argc) {
                https_port = atoi(argv[i]);
            }
            else
                ErrorExit("missing port parameter", -1);
        }
    }

    return 1;
};


void Configuration::Help() {
    printf ("Parameters:\n");
    printf ("  -F                  run in foreground\n");
    printf ("  -D                  run as daemon\n");
    printf ("\n");
    printf ("  -http_port INT      port to listen for http connections\n");
    printf ("  -https_port INT     port to listen for https connections\n");
    printf ("\n");
    printf ("  -config FILE        load this configfile\n");
    printf ("  -dump_config        print the config file\n");
    printf ("\n");
    printf ("  -H                  print this help\n");
}