#include "user.h"



#include <huagao/hgscanner_error.h>
#include <string.h>
#include <base/ini_file.h>


////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// json ...

static std::string device_opt_json[] = {
	"{\"login-hint\":{\"cat\":\"none\",\"group\":\"user\",\"title\":\"\\u767b\\u5f55\\u63d0\\u793a\",\"desc\":\"\\u767b\\u5f55\\u5e10\\u6237\\u63d0\\u793a\",\"type\":\"string\",\"ui-pos\":10,\"auth\":0,\"readonly\":true,\"size\":32,\"ownread\":true,\"cur\":\"\",\"default\":\"\"},\"user-name\":{\"cat\":\"none\",\"group\":\"user\",\"title\":\"\\u7528\\u6237\\u540d\",\"desc\":\"\\u767b\\u5f55\\u7528\\u6237\\u8d26\\u53f7\",\"type\":\"string\",\"fix-id\":39173,\"ui-pos\":15,\"auth\":0,\"size\":32,\"cur\":\"\",\"default\":\"\"},\"user-pwd\":{\"cat\":\"none\",\"group\":\"user\",\"title\":\"\\u5bc6\\u7801\",\"desc\":\"\\u767b\\u5f55\\u7528\\u6237\\u8d26\\u53f7\\u5bc6\\u7801\",\"type\":\"string\",\"fix-id\":39174,\"ui-pos\":16,\"auth\":0,\"size\":32,\"cur\":\"\",\"default\":\"\"},\"login\":{\"cat\":\"none\",\"group\":\"user\",\"title\":\"\\u767b\\u5f55\",\"desc\":\"\\u7528\\u6237\\u767b\\u5f55\",\"type\":\"button\",\"fix-id\":39168,\"ui-pos\":20,\"auth\":0,\"affect\":6,\"size\":4,\"auto\":false},\"logout\":{\"cat\":\"none\",\"group\":\"user\",\"title\":\"\\u6ce8\\u9500\",\"desc\":\"\\u7528\\u6237\\u767b\\u51fa\",\"type\":\"button\",\"fix-id\":39169,\"ui-pos\":21,\"auth\":0,\"affect\":6,\"size\":4,\"auto\":false},\"dev-sn\":{\"cat\":\"base\",\"group\":\"about\",\"title\":\"\\u5e8f\\u5217\\u53f7\",\"desc\":\"\\u8bbe\\u5907\\u5e8f\\u5217\\u53f7\",\"type\":\"string\",\"pos\":100,\"fix-id\":34902,\"ui-pos\":14,\"auth\":0,\"size\":32,\"auto\":false,\"cur\":\"\",\"default\":\"\"}}"
};

static bool check_user_password(const char* pwd, void* param)
{
    return true;
}
static bool check_admin_password(const char* pwd, void* param)
{
    return STRICMP(pwd, "HuaGoScan") == 0;
}
static bool check_owner_password(const char* pwd, void* param)
{
    return STRICMP(pwd, "HuaGoScan") == 0;
}
static bool check_dev_password(const char* pwd, void* param)
{
    return STRICMP(pwd, "HuaGoScan") == 0;
}
struct 
{
    std::string name;
    int         priv;
    bool(*chkpwd)(const char* pwd, void* param);
}g_user_priv[] = { {"user", USER_PRIVILEGE_COMMON, check_user_password}              // no password needed
                , {"admin", USER_PRIVILEGE_LOCAL_MGR, check_admin_password}          // fixed password - "HuaGoScan"
                , {"owner", USER_PRIVILEGE_TECH_SUPPORTING, check_owner_password}    // calc - 1, valid in 1 hour
                , {"developer", USER_PRIVILEGE_DEVLOPER, check_dev_password}         // calc - 2, valid in 5 minutes
 };

static std::string base64_table = "!@#$_~=;/+";


////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// user_priv
user_priv::user_priv()
{
    simple_ini  ini;
    std::string text("");

    set_where("user");
    for(auto& v : device_opt_json)
        text += v;
    set_opt_json_text(&text[0]);
}
user_priv::~user_priv()
{
}

bool user_priv::login(void)
{
    bool ok = false;

    for(auto& v: g_user_priv)
    {
        if(v.name == name_)
        {
            ok = v.chkpwd(pwd_.c_str(), &hint_[0]);
            break;
        }
    }

    return ok;
}
void user_priv::reset_privilege(void)
{
    priv_ = USER_PRIVILEGE_COMMON;
    for(auto& v : g_user_priv)
    {
        if(v.name == name_)
        {
            priv_ = v.priv;
            break;
        }
    }
}

// sane_opt_provider
int user_priv::set_value(const char* name, void* val)
{
    int ret = SCANNER_ERR_OK;

    if(strcmp(name, SANE_OPT_NAME(USER_NAME)) == 0)
    {
        ret = SCANNER_ERR_INVALID_USER_NAME;
        for(auto& v: g_user_priv)
        {
            if(v.name == (char*)val)
            {
                ret = SCANNER_ERR_OK;
                name_ = (char*)val;
                break;
            }
        }
        priv_ = USER_PRIVILEGE_COMMON;
    }
    else if(strcmp(name, SANE_OPT_NAME(USER_PASSWORD)) == 0)
    {
        pwd_ =  (char*)val;
        priv_ = USER_PRIVILEGE_COMMON;
    }
    else if(strcmp(name, SANE_OPT_NAME(DEVICE_SERIAL_NO)) == 0)
    {
        dev_sn_ =  (char*)val;
        utils::to_log(LOG_LEVEL_DEBUG, "set user device SN: %s\n", dev_sn_.c_str());
        priv_ = USER_PRIVILEGE_COMMON;
    }
    else if(strcmp(name, SANE_OPT_NAME(LOGIN)) == 0)
    {
        // login ...
        int prev = priv_;
        if(name_.empty())
        {
            ret = SCANNER_ERR_INVALID_USER_NAME;
        }
        else if(login())
        {
            reset_privilege();
        }
        else
        {
            ret = SCANNER_ERR_INVALID_PASSWORD;
        }
        if(prev != priv_)
            ret = SCANNER_ERR_CONFIGURATION_CHANGED;
        *(int*)val = priv_;
    }
    else if(strcmp(name, SANE_OPT_NAME(LOGOUT)) == 0)
    {
        int prev = priv_;
        name_ = pwd_ = "";
        reset_privilege();
        *(int*)val = priv_;
        if(prev != priv_)
            ret = SCANNER_ERR_CONFIGURATION_CHANGED;
    }
    else
    {
        ret = SCANNER_ERR_DEVICE_NOT_SUPPORT;
    }

    return ret;
}
char* user_priv::get_value(const char* name, void* value, size_t* size, int* err)
{
    char    *ret = nullptr;
    int     e = SCANNER_ERR_DEVICE_NOT_FOUND;

    if(strcmp(name, SANE_OPT_NAME(USER_LOGIN_HINT)) == 0)
    {
        ret = (char*)malloc(hint_.length() + 1);
        memcpy(ret, hint_.c_str(), hint_.length());
        ret[hint_.length()] = 0;
        e = SCANNER_ERR_OK;
    }

    if(err)
        *err = e;

    return ret;
}

bool user_priv::has_privilege(int priv)
{
    return priv_ >= priv;
}
int user_priv::get_current_privilege(void)
{
    return priv_;
}