// -----------------------------------------------------------------------------
//    File: util_i_debug.nss
//  System: Utilities (include script)
//     URL: https://github.com/squattingmonk/nwn-core-framework
// Authors: Michael A. Sinclair (Squatting Monk) <squattingmonk@gmail.com>
// -----------------------------------------------------------------------------
// This file holds utility functions for generating debug messages.
// -----------------------------------------------------------------------------

#include "util_i_color"

// -----------------------------------------------------------------------------
//                                   Constants
// -----------------------------------------------------------------------------

// VarNames
const string DEBUG_COLOR    = "DEBUG_COLOR";
const string DEBUG_LEVEL    = "DEBUG_LEVEL";
const string DEBUG_LOG      = "DEBUG_LOG";
const string DEBUG_OVERRIDE = "DEBUG_OVERRIDE";

const int DEBUG_LEVEL_NONE     = 0; // No debug level set
const int DEBUG_LEVEL_CRITICAL = 1;
const int DEBUG_LEVEL_ERROR    = 2;
const int DEBUG_LEVEL_WARNING  = 3;
const int DEBUG_LEVEL_NOTICE   = 4;
const int DEBUG_LEVEL_DEBUG    = 5;

// Debug logging
const int DEBUG_LOG_NONE = 0x0;
const int DEBUG_LOG_FILE = 0x1;
const int DEBUG_LOG_DM   = 0x2;
const int DEBUG_LOG_PC   = 0x4;
const int DEBUG_LOG_ALL  = 0xf;

// -----------------------------------------------------------------------------
//                              Function Prototypes
// -----------------------------------------------------------------------------

// ---< OverrideDebugLevel >---
// ---< util_i_debug >---
// Silence all debug messages with a verbosity higher than nLevel. Pass with
// FALSE to stop overriding the set debug level.
void OverrideDebugLevel(int nLevel);

// ---< GetDebugLevel >---
// ---< util_i_debug >---
// Returns the minimum level of debug messages that will be logged for oTarget.
// If no level has been set on oTarget, will check the module's value instead.
int GetDebugLevel(object oTarget = OBJECT_SELF);

// ---< SetDebugLevel >---
// ---< util_i_debug >---
// Sets the minimum level of debug messages that will be logged for oTarget. If
// set to DEBUG_LEVEL_NONE, oTarget will use the module's value instead.
void SetDebugLevel(int nLevel, object oTarget = OBJECT_SELF);

// ---< GetDebugColor >---
// ---< util_i_debug >---
// Returns the string color code (in <cRGB> form) for debug messages of nLevel.
string GetDebugColor(int nLevel);

// ---< SetDebugColor >---
// ---< util_i_debug >---
// Sets the string color code (in <cRGB> form) for debug messages of nLevel. If
// sColor is blank, will use the default color codes.
void SetDebugColor(int nLevel, string sColor = "");

// ---< GetDebugLogging >---
// ---< util_i_debug >---
// Returns the enabled debug logging destinations. This is a bitmasked field
// that may contain the following:
// - DEBUG_LOG_NONE: do not log debug messages
// - DEBUG_LOG_FILE: log debug messages to the log file
// - DEBUG_LOG_DM: send debug messages to online DMs
// - DEBUG_LOG_PC: send debug messages to the first PC
// - DEBUG_LOG_ALL: sends messages to the log file, online DMs, and the first PC
// Note: only messages with a priority of GetDebugLevel() or higher will be
// logged.
int GetDebugLogging();

// ---< SetDebugLogging >---
// ---< util_i_debug >---
// Enables debug logging to nEnabled. This is a bitmasked field that may contain
// the following:
// - DEBUG_LOG_NONE: do not log debug messages
// - DEBUG_LOG_FILE: log debug messages to the log file
// - DEBUG_LOG_DM: send debug messages to online DMs
// - DEBUG_LOG_PC: send debug messages to the first PC
// - DEBUG_LOG_ALL: sends messages to the log file, online DMs, and the first PC
// Note: only messages with a priority of GetDebugLevel() or higher will be
// logged.
void SetDebugLogging(int nEnabled);

// ---< IsDebugging >---
// ---< util_i_debug >---
// Returns whether debug messages of nLevel will be logged on oTarget. Useful
// for avoiding spending cycles compiling extra debug information if it will not
// be shown.
// Parameters:
// - nLevel: The error level of the message.
//   Possible values:
//   - DEBUG_LEVEL_CRITICAL: errors severe enough to stop the script
//   - DEBUG_LEVEL_ERROR: indicates the script malfunctioned in some way
//   - DEBUG_LEVEL_WARNING: indicates that unexpected behavior may occur
//   - DEBUG_LEVEL_NOTICE: information to track the flow of the function
//   - DEBUG_LEVEL_DEBUG: data dumps used for debugging
// - oTarget: The object to debug.
int IsDebugging(int nLevel, object oTarget = OBJECT_SELF);

// ---< Debug >---
// ---< util_i_debug >---
// If oTarget has a debug level of nLevel or higher, logs sMessages to all
// destinations set with SetDebugLogging(). If no debug level is set on oTarget,
// will debug using the module's debug level instead.
void Debug(string sMessage, int nLevel = DEBUG_LEVEL_DEBUG, object oTarget = OBJECT_SELF);

// ---< Notice >---
// ---< util_i_debug >---
// Alias for Debug() that issues a general notice.
void Notice(string sMessage, object oTarget = OBJECT_SELF);

// ---< Warning >---
// ---< util_i_debug >---
// Alias for Debug() that issues a warning.
void Warning(string sMessage, object oTarget = OBJECT_SELF);

// ---< Error >---
// ---< util_i_debug >---
// Alias for Debug() that issues an error.
void Error(string sMessage, object oTarget = OBJECT_SELF);

// ---< CriticalError >---
// ---< util_i_debug >---
// Alias for Debug() that issues a critical error.
void CriticalError(string sMessage, object oTarget = OBJECT_SELF);

// -----------------------------------------------------------------------------
//                             Function Definitions
// -----------------------------------------------------------------------------

void OverrideDebugLevel(int nLevel)
{
    nLevel = clamp(nLevel, DEBUG_LEVEL_NONE, DEBUG_LEVEL_DEBUG);
    SetLocalInt(GetModule(), DEBUG_OVERRIDE, nLevel);
}

int GetDebugLevel(object oTarget = OBJECT_SELF)
{
    object oModule = GetModule();
    int nOverride = GetLocalInt(oModule, DEBUG_OVERRIDE);
    if (nOverride)
        return nOverride;

    int nModule = GetLocalInt(oModule, DEBUG_LEVEL);
    if (oTarget == oModule || !GetIsObjectValid(oTarget))
        return nModule;

    int nLevel = GetLocalInt(oTarget, DEBUG_LEVEL);
    return (nLevel ? nLevel : nModule ? nModule : DEBUG_LEVEL_CRITICAL);
}

void SetDebugLevel(int nLevel, object oTarget = OBJECT_SELF)
{
    SetLocalInt(oTarget, DEBUG_LEVEL, nLevel);
}

string GetDebugColor(int nLevel)
{
    string sColor = GetLocalString(GetModule(), DEBUG_COLOR + IntToString(nLevel));

    if (sColor == "")
    {
        int nColor;
        switch (nLevel)
        {
            case DEBUG_LEVEL_CRITICAL: nColor = COLOR_RED;          break;
            case DEBUG_LEVEL_ERROR:    nColor = COLOR_ORANGE_DARK;  break;
            case DEBUG_LEVEL_WARNING:  nColor = COLOR_ORANGE_LIGHT; break;
            case DEBUG_LEVEL_NOTICE:   nColor = COLOR_YELLOW;       break;
            default:                   nColor = COLOR_GRAY_LIGHT;   break;
        }

        sColor = HexToColor(nColor);
        SetDebugColor(nLevel, sColor);
    }

    return sColor;
}

void SetDebugColor(int nLevel, string sColor = "")
{
    SetLocalString(GetModule(), DEBUG_COLOR + IntToString(nLevel), sColor);
}

int GetDebugLogging()
{
    return GetLocalInt(GetModule(), DEBUG_LOG);
}

void SetDebugLogging(int nEnabled)
{
    SetLocalInt(GetModule(), DEBUG_LOG, nEnabled);
}

int IsDebugging(int nLevel, object oTarget = OBJECT_SELF)
{
    return (nLevel <= GetDebugLevel(oTarget));
}

void Debug(string sMessage, int nLevel = DEBUG_LEVEL_DEBUG, object oTarget = OBJECT_SELF)
{
    if (IsDebugging(nLevel, oTarget))
    {
        string sColor = GetDebugColor(nLevel);
        string sPrefix;

        switch (nLevel)
        {
            case DEBUG_LEVEL_CRITICAL: sPrefix = "[Critical Error] "; break;
            case DEBUG_LEVEL_ERROR:    sPrefix = "[Error] ";          break;
            case DEBUG_LEVEL_WARNING:  sPrefix = "[Warning] ";        break;
        }

        sMessage = sPrefix + sMessage;

        int nLogging = GetLocalInt(GetModule(), DEBUG_LOG);

        if (nLogging & DEBUG_LOG_FILE)
            WriteTimestampedLogEntry(sMessage);

        sMessage = ColorString(sMessage, sColor);

        if (nLogging & DEBUG_LOG_DM)
            SendMessageToAllDMs(sMessage);

        if (nLogging & DEBUG_LOG_PC)
            SendMessageToPC(GetFirstPC(), sMessage);
    }
}

void Notice(string sMessage, object oTarget = OBJECT_SELF)
{
    Debug(sMessage, DEBUG_LEVEL_NOTICE, oTarget);
}

void Warning(string sMessage, object oTarget = OBJECT_SELF)
{
    Debug(sMessage, DEBUG_LEVEL_WARNING, oTarget);
}

void Error(string sMessage, object oTarget = OBJECT_SELF)
{
    Debug(sMessage, DEBUG_LEVEL_ERROR, oTarget);
}

void CriticalError(string sMessage, object oTarget = OBJECT_SELF)
{
    Debug(sMessage, DEBUG_LEVEL_CRITICAL, oTarget);
}