using System;
using System.Runtime.Serialization;

namespace MarketAlly.AIPlugin.Learning.Exceptions
{
    /// <summary>
    /// Base exception for all learning-related operations
    /// </summary>
    public abstract class LearningException : Exception
    {
        protected LearningException() { }
        protected LearningException(string message) : base(message) { }
        protected LearningException(string message, Exception innerException) : base(message, innerException) { }
        protected LearningException(SerializationInfo info, StreamingContext context) : base(info, context) { }
    }

    /// <summary>
    /// Exception thrown when compilation fails during learning iteration
    /// </summary>
    public class CompilationException : LearningException
    {
        public int ErrorCount { get; }
        public int WarningCount { get; }
        public string[] Errors { get; }

        public CompilationException(int errorCount, int warningCount, string[] errors) 
            : base($"Compilation failed with {errorCount} errors and {warningCount} warnings")
        {
            ErrorCount = errorCount;
            WarningCount = warningCount;
            Errors = errors ?? Array.Empty<string>();
        }

        public CompilationException(string message, int errorCount, int warningCount, Exception innerException = null) 
            : base(message, innerException)
        {
            ErrorCount = errorCount;
            WarningCount = warningCount;
            Errors = Array.Empty<string>();
        }
    }

    /// <summary>
    /// Exception thrown when RefactorIQ operations fail
    /// </summary>
    public class RefactorIQException : LearningException
    {
        public string Operation { get; }

        public RefactorIQException(string operation, string message) 
            : base($"RefactorIQ {operation} failed: {message}")
        {
            Operation = operation;
        }

        public RefactorIQException(string operation, string message, Exception innerException) 
            : base($"RefactorIQ {operation} failed: {message}", innerException)
        {
            Operation = operation;
        }
    }

    /// <summary>
    /// Exception thrown when learning iteration encounters critical errors
    /// </summary>
    public class LearningIterationException : LearningException
    {
        public int IterationNumber { get; }
        public string Phase { get; }

        public LearningIterationException(int iterationNumber, string phase, string message) 
            : base($"Learning iteration {iterationNumber} failed in {phase}: {message}")
        {
            IterationNumber = iterationNumber;
            Phase = phase;
        }

        public LearningIterationException(int iterationNumber, string phase, string message, Exception innerException) 
            : base($"Learning iteration {iterationNumber} failed in {phase}: {message}", innerException)
        {
            IterationNumber = iterationNumber;
            Phase = phase;
        }
    }

    /// <summary>
    /// Exception thrown when Git operations fail
    /// </summary>
    public class GitOperationException : LearningException
    {
        public string Operation { get; }
        public string RepositoryPath { get; }

        public GitOperationException(string operation, string repositoryPath, string message) 
            : base($"Git {operation} failed in {repositoryPath}: {message}")
        {
            Operation = operation;
            RepositoryPath = repositoryPath;
        }

        public GitOperationException(string operation, string repositoryPath, string message, Exception innerException) 
            : base($"Git {operation} failed in {repositoryPath}: {message}", innerException)
        {
            Operation = operation;
            RepositoryPath = repositoryPath;
        }
    }

    /// <summary>
    /// Exception thrown when AI services fail
    /// </summary>
    public class AIServiceException : LearningException
    {
        public string ServiceName { get; }
        public bool IsRetryable { get; }

        public AIServiceException(string serviceName, string message, bool isRetryable = true) 
            : base($"AI service {serviceName} failed: {message}")
        {
            ServiceName = serviceName;
            IsRetryable = isRetryable;
        }

        public AIServiceException(string serviceName, string message, Exception innerException, bool isRetryable = true) 
            : base($"AI service {serviceName} failed: {message}", innerException)
        {
            ServiceName = serviceName;
            IsRetryable = isRetryable;
        }
    }

    /// <summary>
    /// Exception thrown when configuration is invalid
    /// </summary>
    public class ConfigurationException : LearningException
    {
        public string ConfigurationKey { get; }

        public ConfigurationException(string configurationKey, string message) 
            : base($"Configuration error for '{configurationKey}': {message}")
        {
            ConfigurationKey = configurationKey;
        }

        public ConfigurationException(string configurationKey, string message, Exception innerException) 
            : base($"Configuration error for '{configurationKey}': {message}", innerException)
        {
            ConfigurationKey = configurationKey;
        }
    }

    /// <summary>
    /// Exception thrown when security validation fails
    /// </summary>
    public class SecurityException : LearningException
    {
        public string Operation { get; }
        public string Resource { get; }

        public SecurityException(string operation, string resource, string message) 
            : base($"Security violation in {operation} for {resource}: {message}")
        {
            Operation = operation;
            Resource = resource;
        }
    }
}