/**
 * @file llassettype.cpp
 * @brief Implementatino of LLAssetType functionality.
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#include "linden_common.h"

#include "llassettype.h"
#include "lldictionary.h"
#include "llmemory.h"
#include "llsingleton.h"

///----------------------------------------------------------------------------
/// Class LLAssetType
///----------------------------------------------------------------------------
struct AssetEntry : public LLDictionaryEntry
{
    AssetEntry(const char *desc_name,
               const char *type_name,   // 8 character limit!
               const char *human_name,  // for decoding to human readable form; put any and as many printable characters you want in each one
               bool can_link,           // can you create a link to this type?
               bool can_fetch,          // can you fetch this asset by ID?
               bool can_know)           // can you see this asset's ID?
        :
        LLDictionaryEntry(desc_name),
        mTypeName(type_name),
        mHumanName(human_name),
        mCanLink(can_link),
        mCanFetch(can_fetch),
        mCanKnow(can_know)
    {
        llassert(strlen(mTypeName) <= 8);
    }

    const char *mTypeName;
    const char *mHumanName;
    bool mCanLink;
    bool mCanFetch;
    bool mCanKnow;
};

class LLAssetDictionary : public LLSingleton<LLAssetDictionary>,
                          public LLDictionary<LLAssetType::EType, AssetEntry>
{
    LLSINGLETON(LLAssetDictionary);
};

LLAssetDictionary::LLAssetDictionary()
{
    //                                                         DESCRIPTION          TYPE NAME   HUMAN NAME          CAN LINK?   CAN FETCH?  CAN KNOW?
    //                                                        |--------------------|-----------|-------------------|-----------|-----------|---------|
    addEntry(LLAssetType::AT_TEXTURE,           new AssetEntry("TEXTURE",           "texture",  "texture",          true,       false,      true));
    addEntry(LLAssetType::AT_SOUND,             new AssetEntry("SOUND",             "sound",    "sound",            true,       true,       true));
    addEntry(LLAssetType::AT_CALLINGCARD,       new AssetEntry("CALLINGCARD",       "callcard", "calling card",     true,       false,      false));
    addEntry(LLAssetType::AT_LANDMARK,          new AssetEntry("LANDMARK",          "landmark", "landmark",         true,       true,       true));
    addEntry(LLAssetType::AT_SCRIPT,            new AssetEntry("SCRIPT",            "script",   "legacy script",    true,       false,      false));
    addEntry(LLAssetType::AT_CLOTHING,          new AssetEntry("CLOTHING",          "clothing", "clothing",         true,       true,       true));
    addEntry(LLAssetType::AT_OBJECT,            new AssetEntry("OBJECT",            "object",   "object",           true,       false,      false));
    addEntry(LLAssetType::AT_NOTECARD,          new AssetEntry("NOTECARD",          "notecard", "note card",        true,       false,      true));
    addEntry(LLAssetType::AT_CATEGORY,          new AssetEntry("CATEGORY",          "category", "folder",           true,       false,      false));
    addEntry(LLAssetType::AT_LSL_TEXT,          new AssetEntry("LSL_TEXT",          "lsltext",  "lsl2 script",      true,       false,      false));
    addEntry(LLAssetType::AT_LSL_BYTECODE,      new AssetEntry("LSL_BYTECODE",      "lslbyte",  "lsl bytecode",     true,       false,      false));
    addEntry(LLAssetType::AT_TEXTURE_TGA,       new AssetEntry("TEXTURE_TGA",       "txtr_tga", "tga texture",      true,       false,      false));
    addEntry(LLAssetType::AT_BODYPART,          new AssetEntry("BODYPART",          "bodypart", "body part",        true,       true,       true));
    addEntry(LLAssetType::AT_SOUND_WAV,         new AssetEntry("SOUND_WAV",         "snd_wav",  "sound",            true,       false,      false));
    addEntry(LLAssetType::AT_IMAGE_TGA,         new AssetEntry("IMAGE_TGA",         "img_tga",  "targa image",      true,       false,      false));
    addEntry(LLAssetType::AT_IMAGE_JPEG,        new AssetEntry("IMAGE_JPEG",        "jpeg",     "jpeg image",       true,       false,      false));
    addEntry(LLAssetType::AT_ANIMATION,         new AssetEntry("ANIMATION",         "animatn",  "animation",        true,       true,       true));
    addEntry(LLAssetType::AT_GESTURE,           new AssetEntry("GESTURE",           "gesture",  "gesture",          true,       true,       true));
    addEntry(LLAssetType::AT_SIMSTATE,          new AssetEntry("SIMSTATE",          "simstate", "simstate",         false,      false,      false));

    addEntry(LLAssetType::AT_LINK,              new AssetEntry("LINK",              "link",     "sym link",         false,      false,      true));
    addEntry(LLAssetType::AT_LINK_FOLDER,       new AssetEntry("FOLDER_LINK",       "link_f",   "sym folder link",  false,      false,      true));
    addEntry(LLAssetType::AT_MESH,              new AssetEntry("MESH",              "mesh",     "mesh",             false,      false,      false));
    addEntry(LLAssetType::AT_WIDGET,            new AssetEntry("WIDGET",            "widget",   "widget",           false,      false,      false));
    addEntry(LLAssetType::AT_PERSON,            new AssetEntry("PERSON",            "person",   "person",           false,      false,      false));
    addEntry(LLAssetType::AT_SETTINGS,          new AssetEntry("SETTINGS",          "settings", "settings blob",    true,       true,       true));
    addEntry(LLAssetType::AT_MATERIAL,          new AssetEntry("MATERIAL",          "material", "render material",  true,       true,       true));
    addEntry(LLAssetType::AT_UNKNOWN,           new AssetEntry("UNKNOWN",           "invalid",  NULL,               false,      false,      false));
    addEntry(LLAssetType::AT_NONE,              new AssetEntry("NONE",              "-1",       NULL,               FALSE,      FALSE,      FALSE));

};

const std::string LLAssetType::BADLOOKUP("llassettype_bad_lookup");

// static
LLAssetType::EType LLAssetType::getType(const std::string& desc_name)
{
    std::string s = desc_name;
    LLStringUtil::toUpper(s);
    return LLAssetDictionary::getInstance()->lookup(s);
}

// static
const std::string &LLAssetType::getDesc(LLAssetType::EType asset_type)
{
    const AssetEntry *entry = LLAssetDictionary::getInstance()->lookup(asset_type);
    if (entry)
    {
        return entry->mName;
    }
    else
    {
        return BADLOOKUP;
    }
}

// static
const char *LLAssetType::lookup(LLAssetType::EType asset_type)
{
    const LLAssetDictionary *dict = LLAssetDictionary::getInstance();
    const AssetEntry *entry = dict->lookup(asset_type);
    if (entry)
    {
        return entry->mTypeName;
    }
    else
    {
        return BADLOOKUP.c_str();
    }
}

// static
LLAssetType::EType LLAssetType::lookup(const char* name)
{
    return lookup(ll_safe_string(name));
}

// static
LLAssetType::EType LLAssetType::lookup(const std::string& type_name)
{
    const LLAssetDictionary *dict = LLAssetDictionary::getInstance();
    for (const LLAssetDictionary::value_type& pair : *dict)
    {
        const AssetEntry *entry = pair.second;
        if (type_name == entry->mTypeName)
        {
            return pair.first;
        }
    }
    return AT_UNKNOWN;
}

// static
const char *LLAssetType::lookupHumanReadable(LLAssetType::EType asset_type)
{
    const LLAssetDictionary *dict = LLAssetDictionary::getInstance();
    const AssetEntry *entry = dict->lookup(asset_type);
    if (entry)
    {
        return entry->mHumanName;
    }
    else
    {
        return BADLOOKUP.c_str();
    }
}

// static
LLAssetType::EType LLAssetType::lookupHumanReadable(const char* name)
{
    return lookupHumanReadable(ll_safe_string(name));
}

// static
LLAssetType::EType LLAssetType::lookupHumanReadable(const std::string& readable_name)
{
    const LLAssetDictionary *dict = LLAssetDictionary::getInstance();
    for (const LLAssetDictionary::value_type& pair : *dict)
    {
        const AssetEntry *entry = pair.second;
        if (entry->mHumanName && (readable_name == entry->mHumanName))
        {
            return pair.first;
        }
    }
    return AT_NONE;
}

// static
bool LLAssetType::lookupCanLink(EType asset_type)
{
    const LLAssetDictionary *dict = LLAssetDictionary::getInstance();
    const AssetEntry *entry = dict->lookup(asset_type);
    if (entry)
    {
        return entry->mCanLink;
    }
    return false;
}

// static
// Not adding this to dictionary since we probably will only have these two types
bool LLAssetType::lookupIsLinkType(EType asset_type)
{
    if (asset_type == AT_LINK || asset_type == AT_LINK_FOLDER)
    {
        return true;
    }
    return false;
}

// static
bool LLAssetType::lookupIsAssetFetchByIDAllowed(EType asset_type)
{
    const LLAssetDictionary *dict = LLAssetDictionary::getInstance();
    const AssetEntry *entry = dict->lookup(asset_type);
    if (entry)
    {
        return entry->mCanFetch;
    }
    return false;
}

// static
bool LLAssetType::lookupIsAssetIDKnowable(EType asset_type)
{
    const LLAssetDictionary *dict = LLAssetDictionary::getInstance();
    const AssetEntry *entry = dict->lookup(asset_type);
    if (entry)
    {
        return entry->mCanKnow;
    }
    return false;
}