/*
 * CiderPress
 * Copyright (C) 2007 by faddenSoft, LLC.  All Rights Reserved.
 * See the file LICENSE for distribution terms.
 */
/*
 * A class representing the system registry.
 */
#ifndef APP_REGISTRY_H
#define APP_REGISTRY_H


/*
 * All access to the registry (except for GetProfileInt/GetProfileString)
 * should go through this.
 */
class MyRegistry {
public:
    MyRegistry(void) {}
    ~MyRegistry(void) {}

    typedef enum RegStatus {
        kRegUnknown = 0,
        kRegNotSet,     // unregistered
        kRegExpired,    // unregistered, expired
        kRegValid,      // registration present and valid
        kRegInvalid,    // registration present, but invalid (!)
        kRegFailed,     // error occurred during registration
    } RegStatus;

    void OneTimeInstall(void) const;
    void OneTimeUninstall(void) const;

    /*
    int GetRegistration(CString* pUser, CString* pCompany,
        CString* pReg, CString* pVersions, CString* pExpire);
    int SetRegistration(const CString& user, const CString& company,
        const CString& reg, const CString& versions, const CString& expire);
    RegStatus CheckRegistration(CString* pResult);
    bool IsValidRegistrationKey(const CString& user,
        const CString& company, const CString& reg);
    */

    // Get the registry key to be used for our application.
    const WCHAR* GetAppRegistryKey(void) const;

    // Fix basic settings, e.g. HKCR AppID classes.
    void FixBasicSettings(void) const;

    int GetNumFileAssocs(void) const;
    void GetFileAssoc(int idx, CString* pExt, CString* pHandler,
        bool* pOurs) const;
    int SetFileAssoc(int idx, bool wantIt) const;

    static unsigned short ComputeStringCRC(const char* str);

private:
    typedef struct FileTypeAssoc {
        const WCHAR* ext;       // e.g. ".SHK"
        const WCHAR* appID;     // e.g. "CiderPress.NuFX"
    } FileTypeAssoc;

    static const FileTypeAssoc kFileTypeAssoc[];

    bool IsOurAppID(const WCHAR* id) const;
    void ConfigureAppID(const WCHAR* appID, const WCHAR* descr,
        const WCHAR* exeName, int iconIdx) const;
    void ConfigureAppIDSubFields(HKEY hAppKey, const WCHAR* descr,
        const WCHAR* exeName) const;
    int GetAssocAppName(const CString& appID, CString* pCmd) const;
    void ReduceToToken(CString* pStr) const;
    bool GetAssocState(const WCHAR* ext) const;
    int DisownExtension(const WCHAR* ext) const;
    int OwnExtension(const WCHAR* ext, const WCHAR* appID) const;
    DWORD RegDeleteKeyNT(HKEY hStartKey, LPCTSTR pKeyName) const;

    /* key validation */
    static unsigned short CalcCRC16(unsigned short seed,
        const unsigned char* ptr, int count);
    static char* StripStrings(const char* str1, const char* str2);
    void ComputeKey(const char* chBuf, int salt, long* pKeyLo, long* pKeyHi);
    int VerifyKey(const char* user, const char* company, const char* key);
};

#endif /*APP_REGISTRY_H*/