/*
 * cachemanager.h
 *
 * Copyright (C) 2003 Atomic Blue (info@planeshift.it, http://www.atomicblue.org)
 *
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation (version 2 of the License)
 * This program 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 General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

#ifndef __CACHEMANAGER_H__
#define __CACHEMANAGER_H__

#include "csutil/array.h"
#include <csutil/hash.h>
#include <csgeom/vector3.h>

#include "util/slots.h"
#include "bulkobjects/pscharacter.h"
#include "bulkobjects/pssectorinfo.h"
#include "util/gameevent.h"
#include "icachedobject.h"

class psSectorInfo;
class Client;
class psGuildInfo;
class psGuildAlliance;
struct psTrait;
struct psRaceInfo;
class psSkillInfo;
class psAccountInfo;
class psQuest;
class psTradePatterns;
class psTradeProcesses;
class psTradeCombinations;
class psTradeAutoContainers;
struct CombinationConstruction;
struct CombinationSet;
struct psWay;
class psItemSet;
class psCommandManager;

struct ArmorVsWeapon
{
    int id;
    float c [3][4];
    csString weapontype;
};

/// A list of the flags mapped to their IDs
struct psItemStatFlags
{
    csString string;
    int flag;

    psItemStatFlags(const char *s, int f) : string(s), flag(f) { }
    void Set(const char *s,int f) { string=s; flag=f; }
};

/// A character mode and its properties
struct psCharMode
{
    uint32 id;
    csString name;
    csVector3 move_mod;       /// motion multiplier
    csVector3 rotate_mod;     /// rotation multiplier
    csString idle_animation;  /// animation when not moving
};

/// A movement type and its properties
struct psMovement
{
    uint32 id;
    csString name;
    csVector3 base_move;    /// motion for this
    csVector3 base_rotate;  /// rotation for this
};


/** This class manages the caching of data that is unchanging during server operation.
* Data stored here is loaded from the database at server startup and retrieved by other code from this cache.
* This allows the database to be used to store configuration data, but we don't have to query the database
* every time we need access.
*
* Meshes, Textures, Images, Parts, and Sectors may be loaded without other lists being loaded first.
* Traits will fail if Textures, Parts and Meshes are not loaded beforehand.
* Races will fail if Meshes, Textures and Sectors are not loaded beforehand.
*
*/
class CacheManager : public Singleton<CacheManager>
{
public:
    CacheManager();
    ~CacheManager();
    
    // Sector Info Table cache
    psSectorInfo *GetSectorInfoByName(const char *name);
    psSectorInfo *GetSectorInfoByID(unsigned int id);
    csHash<psSectorInfo *>::GlobalIterator GetSectorIterator();
    
    psCommandManager* GetCommandManager() { return commandManager; }
    // Traits
    typedef csPDelArray<psTrait>::Iterator TraitIterator;
    psTrait *GetTraitByID(unsigned int id);
    psTrait *GetTraitByName(const char *name);
    TraitIterator GetTraitIterator();

    // Races
    psRaceInfo *GetRaceInfoByIndex(int idx);
    psRaceInfo *GetRaceInfoByID(unsigned int id);
    psRaceInfo *GetRaceInfoByNameGender(const char *name,PSCHARACTER_GENDER gender);
    psRaceInfo *GetRaceInfoByNameGender( PSCHARACTER_RACE id, PSCHARACTER_GENDER gender);

    // Skills
    psSkillInfo *GetSkillByID(unsigned int id);
    psSkillInfo *GetSkillByName(const char *name);
    //Get all skills belonging to a specific category
    void GetSkillsListbyCategory(csArray <psSkillInfo>& listskill,int category );

    // Common Strings
    const char *FindCommonString(unsigned int id);
    unsigned int FindCommonStringID(const char *name);

    /** Returns the message strings hash table.
     *
     * @return Returns a reference to the message strings hash table.
     */
    csStringHash *GetMsgStrings() { return &msg_strings; }

    // Guilds
    psGuildInfo *FindGuild(unsigned int id);
    psGuildInfo *FindGuild(const csString & name);
    bool CreateGuild(const char *guildname, Client *client);
    void RemoveGuild(psGuildInfo *which);

    // Guild alliances
    psGuildAlliance * FindAlliance(unsigned int id);
    bool CreateAlliance(const csString & name, psGuildInfo * founder, Client *client);
    bool RemoveAlliance(psGuildAlliance *which);

    // Quests
    psQuest *GetQuestByID(unsigned int id);
    psQuest *GetQuestByName(const char *name);
    psQuest *AddDynamicQuest(const char *name, psQuest *parentQuest, int step);
    // Unloads a quest and its scripts
    bool UnloadQuest(int id);
    // Loads a quest and its scripts
    bool LoadQuest(int id);
    csHash<psQuest *>::GlobalIterator GetQuestIterator();

    // Accounts

    /** Retrieves account information given an accountid.
     *
     *  This is not the usual entry method.  The username will be used more often.
     *
     *  @param accountid - The unique id associated with the account.
     *  @return NULL if no account information was found for the given ID. The returned pointer must be deleted when no longer needed.
     */
    psAccountInfo *GetAccountInfoByID(unsigned int accountid);

    /** Retrieves account information given an character ID.
     *
     *  @param charid - The unique id associated with the character.
     *  @return NULL if no account information was found for the given ID. The returned pointer must be deleted when no longer needed.
     */
    psAccountInfo *GetAccountInfoByCharID(unsigned int charid);

    /** Retrieves account information given a username.
     *
     *  This is the usual method for looking up account information.
     *
     *  @param username - The unique username associated with the account.
     *  @return NULL if no account information was found for the given ID.  The returned pointer must be deleted when no longer needed.
     */
    psAccountInfo *GetAccountInfoByUsername(const char *username);

    /** Call to store modified account information back to the database.
     *
     * @param ainfo - A pointer to account data to store.
     * @return true - success  false - failed
     */
    bool UpdateAccountInfo(psAccountInfo *ainfo);

    /** Call to create a new account in the database.
     *
     *  @param ainfo - Should be initialized with all needed account info.
     *  @return The accountid assigned to this account (also stored in the appropriate field in ainfo)
     */
    unsigned int NewAccountInfo(psAccountInfo *ainfo);

    /// Convenience function to preload all of the above in an appropriate order
    bool PreloadAll();
    void UnloadAll();

    // Item categories
    psItemCategory *GetItemCategoryByID(unsigned int id);
    psItemCategory *GetItemCategoryByName(const csString & name);

    // Item Animations
    csPDelArray<psItemAnimation> *FindAnimationList(int id);

    // Ways
    psWay *GetWayByID(unsigned int id);
    psWay *GetWayByName(const csString & name);

    // Spells
    typedef csPDelArray<psSpell>::Iterator SpellIterator;
    psSpell *GetSpellByID(unsigned int id);
    psSpell *GetSpellByName(const csString & name);
    SpellIterator GetSpellIterator();

    // Trades
    CombinationSet* FindCombinationsList(uint32 patternid);
    csPDelArray<psTradeTransformations> *FindTransformationsList(uint32 patternid, uint32 targetid);
    bool PreloadTradeProcesses();
    psTradeProcesses* GetTradeProcessesByID(uint32 id);
    bool PreloadTradePatterns();
    psTradePatterns* GetTradePatternByItemID(uint32 id);

    // Items
    psItemStats *GetBasicItemStatsByName(csString name);
    psItemStats *GetBasicItemStatsByID(uint32 id);
//    psItemStats *GetBasicItemStatsByIndex(unsigned int idx);
    psItemStats *CopyItemStats(uint32 id);

    psItemSet *LoadWorldItems(psSectorInfo *sector,int &loadeditems);

    float GetArmorVSWeaponResistance(const char* armor_type, const char* weapon_type);
    float GetArmorVSWeaponResistance(psItemStats* armor, psItemStats* weapon);

    void RemoveInstance( psItem * & item );
    
    PSITEMSTATS_STAT ConvertAttributeString(const char *attributestring);
    
    // Converts the stat enum to a string.
    const char* Attribute2String( PSITEMSTATS_STAT s );
    
    PSSKILL               ConvertSkillString(const char *skillstring);
    PSSKILL               ConvertSkill(int skill_id);
    PSCHARACTER_GENDER    ConvertGenderString(const char *genderstring);
    PSITEMSTATS_SLOTLIST  slotMap[PSCHARACTER_SLOT_COUNT];

    //Tips
    void GetTipByID(int id, csString& tip);
    unsigned int GetTipLength(); //Returns how many tips there is

    SlotName slotName;

    // Bad names
    size_t GetBadNamesCount();
    const char* GetBadName(int pos);
    void AddBadName(const char*);
    void DelBadName(const char*);

    /// Translation table for Flag strings (from db) into bit codes
    csArray<psItemStatFlags> ItemStatFlagArray;

    psMsgCraftingInfo* GetCraftInfo( int patternID );
    
    uint32_t GetUpdateTimeStamp() { return updateTimeStamp; }

    const char *MakeCacheName(const char *prefix, uint32 id);
    void AddToCache(iCachedObject *obj, const char *name, int max_cache_time_seconds);
    iCachedObject *RemoveFromCache(const char *name);

    const csPDelArray<psCharMode>& GetCharModes() const { return char_modes; }
    const csPDelArray<psMovement>& GetMovements() const { return movements; }
    const psCharMode* GetCharMode(size_t id) const { return char_modes[id]; }
    const psMovement* GetMovement(size_t id) const { return movements[id]; }
    uint8_t GetCharModeID(const char* name);
    uint8_t GetMovementID(const char* name);
    
    /// Used to track effect IDs
    uint32_t NextEffectUID() { return ++effectID; }

protected:
    uint32_t effectID;
    uint32_t maxCommonStrID;                //< The max common string id
    char CacheNameBuffer[15];

    bool PreloadSectors();
    bool PreloadCommonStrings();
    bool PreloadRaceInfo();
    bool PreloadSkills();
    bool PreloadTraits();
    bool PreloadItemCategories();
    bool PreloadWays();
    bool PreloadSpells();
    bool PreloadItemStatsDatabase();
    bool PreloadItemAnimList();
    bool PreloadQuests();
    bool PreloadTradeCombinations();
    bool PreloadTradeTransformations();
//    bool PreloadTradeTransformationSkills();
    bool PreloadTips();
    bool PreloadBadNames();
    bool PreloadArmorVsWeapon();
    bool PreloadMovement();
    void PreloadCommandGroups();
    void PreloadUpdateInfo();
    
    /// Cache in the crafting messages.        
    void PreCreateCraftMessages();

    /** Caches in the crafting transforms.
      * @param tradePattern  The current pattern message we want to construct.
      * @param patternID    The pattern ID of the pattern we are cacheing.
      */
    void CacheCraftTransforms( psMsgCraftingInfo* tradePattern, int patternID, int group );

    /** Caches in the crafting combinations..
      * @param tradePattern  The current pattern message we want to construct.
      * @param patternID    The pattern ID of the pattern we are cacheing.
      */    
    void CacheCraftCombos( psMsgCraftingInfo* tradePattern, int patternID, int group );    
    
    PSTRAIT_LOCATION ConvertTraitLocationString(const char *locationstring);

    class psCacheExpireEvent; // forward decl for next decl

    struct CachedObject 
    {
        csString name;
        iCachedObject *object;
        psCacheExpireEvent *event;
    };

    /**
    * The generic cache sets timers for each object added to the cache,
    * then if the object is not removed by the expiration time, it
    * calls the iCachedObject interface and deletes the object.
    */
    class psCacheExpireEvent : public psGameEvent
    {
    protected:
        bool valid;
        CachedObject *myObject;

    public:
        psCacheExpireEvent(int delayticks,CachedObject *object);
        void CancelEvent() { valid = false;}
        virtual void Trigger();  // Abstract event processing function
    };

    /** This cache is intended to keep database-loaded objects 
     *  in memory for a time after we are done with them to 
     *  avoid reloading in case they are reused soon.
     */
    csHash<CachedObject *, csString> generic_object_cache;

    csPDelArray<psMsgCraftingInfo> craftingMessages;
    csStringHash msg_strings;
    csHash<psSectorInfo *> sectorinfo_by_id;   /// Sector info list hashed by sector id
    csHash<psSectorInfo *> sectorinfo_by_name; /// Sector info list hashed by sector name
    csPDelArray<psTrait > traitlist;
    csPDelArray<psRaceInfo > raceinfolist;
    csPDelArray<psSkillInfo > skillinfolist;
    csPDelArray<psItemCategory > itemCategoryList;
    csPDelArray<psWay > wayList;
    csPDelArray<psSpell > spellList;
    //csArray<psItemStats *> basicitemstatslist;
    csHash<psItemStats *,uint32> itemStats_IDHash;
    csHash<psItemStats *,csString> itemStats_NameHash;
    csPDelArray<csPDelArray<psItemAnimation > > item_anim_list;
    csHash<psGuildInfo*> guildinfo_by_id;
    csHash<psGuildAlliance*> alliance_by_id;
    csHash<psQuest *> quests_by_id;
    csPDelArray<CombinationSet> combinations;
    csPDelArray<csPDelArray<psTradeTransformations > > transformations_list;    /// Tranfromations list array
    csHash<psTradePatterns *,uint32> tradePatterns_IDHash;
    csHash<psTradeProcesses *,uint32> tradeProcesses_IDHash;
    csArray<csString> tips_list;                                            /// List for the tips
    csPDelArray<csString> bad_names;
    csPDelArray<ArmorVsWeapon> armor_vs_weapon;
    csPDelArray<psCharMode> char_modes;
    csPDelArray<psMovement> movements;

    psCommandManager* commandManager;
    
    uint32_t updateTimeStamp;
};


#endif