using System.Text.Json;

namespace MarketAlly.AIPlugin.ClaudeCode;

/// <summary>
/// Main service interface for Claude Code integration
/// </summary>
public interface IClaudeCodeService
{
    /// <summary>
    /// Sends a chat message to Claude Code and gets a response
    /// </summary>
    /// <param name="request">The chat request</param>
    /// <param name="cancellationToken">Cancellation token</param>
    /// <returns>Claude's response</returns>
    Task<ClaudeCodeResponse<string>> SendChatMessageAsync(ChatRequest request, CancellationToken cancellationToken = default);

    /// <summary>
    /// Analyzes a file or code snippet
    /// </summary>
    /// <param name="request">The analysis request</param>
    /// <param name="cancellationToken">Cancellation token</param>
    /// <returns>Analysis results</returns>
    Task<ClaudeCodeResponse<AnalysisResult>> AnalyzeCodeAsync(AnalysisRequest request, CancellationToken cancellationToken = default);

    /// <summary>
    /// Gets current rate limit status
    /// </summary>
    /// <param name="cancellationToken">Cancellation token</param>
    /// <returns>Rate limit information</returns>
    Task<ClaudeCodeResponse<RateLimitInfo>> GetRateLimitStatusAsync(CancellationToken cancellationToken = default);

    /// <summary>
    /// Searches project context for relevant information
    /// </summary>
    /// <param name="query">Search query</param>
    /// <param name="projectPath">Project path</param>
    /// <param name="cancellationToken">Cancellation token</param>
    /// <returns>Search results</returns>
    Task<ClaudeCodeResponse<List<ContextSearchResult>>> SearchContextAsync(string query, string? projectPath = null, CancellationToken cancellationToken = default);

    /// <summary>
    /// Stores a decision or insight for future reference
    /// </summary>
    /// <param name="request">The decision storage request</param>
    /// <param name="cancellationToken">Cancellation token</param>
    /// <returns>Success response</returns>
    Task<ClaudeCodeResponse<bool>> StoreDecisionAsync(StoreDecisionRequest request, CancellationToken cancellationToken = default);
}

/// <summary>
/// Chat request model
/// </summary>
public class ChatRequest
{
    public string Message { get; set; } = string.Empty;
    public string? SessionId { get; set; }
    public string? ProjectPath { get; set; }
    public Dictionary<string, object>? Context { get; set; }
    public bool IncludeProjectContext { get; set; } = true;
    public bool IncludeHistory { get; set; } = true;
}

/// <summary>
/// Analysis request model
/// </summary>
public class AnalysisRequest
{
    public string? FilePath { get; set; }
    public string? Code { get; set; }
    public string AnalysisType { get; set; } = "general"; // general, security, performance, documentation
    public string? ProjectPath { get; set; }
    public Dictionary<string, object>? Options { get; set; }
}

/// <summary>
/// Store decision request model
/// </summary>
public class StoreDecisionRequest
{
    public string Decision { get; set; } = string.Empty;
    public string Category { get; set; } = "decision";
    public string? ProjectPath { get; set; }
    public Dictionary<string, object>? Metadata { get; set; }
}

/// <summary>
/// Analysis result model
/// </summary>
public class AnalysisResult
{
    public string Summary { get; set; } = string.Empty;
    public List<AnalysisIssue> Issues { get; set; } = new();
    public List<AnalysisRecommendation> Recommendations { get; set; } = new();
    public Dictionary<string, object> Metrics { get; set; } = new();
}

/// <summary>
/// Analysis issue model
/// </summary>
public class AnalysisIssue
{
    public string Type { get; set; } = string.Empty;
    public string Severity { get; set; } = string.Empty;
    public string Description { get; set; } = string.Empty;
    public string? Line { get; set; }
    public string? File { get; set; }
}

/// <summary>
/// Analysis recommendation model
/// </summary>
public class AnalysisRecommendation
{
    public string Title { get; set; } = string.Empty;
    public string Description { get; set; } = string.Empty;
    public string Priority { get; set; } = string.Empty;
    public List<string> ActionItems { get; set; } = new();
}

/// <summary>
/// Context search result model
/// </summary>
public class ContextSearchResult
{
    public string Id { get; set; } = string.Empty;
    public string Type { get; set; } = string.Empty;
    public string Content { get; set; } = string.Empty;
    public DateTime Timestamp { get; set; }
    public double Relevance { get; set; }
    public Dictionary<string, object> Metadata { get; set; } = new();
}

/// <summary>
/// Rate limit information model
/// </summary>
public class RateLimitInfo
{
    public string Tier { get; set; } = string.Empty;
    public int Current { get; set; }
    public int Limit { get; set; }
    public DateTime ResetTime { get; set; }
    public TimeSpan TimeToReset { get; set; }
    public double PercentageUsed { get; set; }
    public bool IsNearLimit { get; set; }
}

/// <summary>
/// Generic response wrapper for Claude Code operations
/// </summary>
/// <typeparam name="T">Response data type</typeparam>
public class ClaudeCodeResponse<T>
{
    public bool Success { get; set; }
    public T? Data { get; set; }
    public string? Error { get; set; }
    public string? ErrorCode { get; set; }
    public RateLimitInfo? RateLimitInfo { get; set; }
    public Dictionary<string, object> Metadata { get; set; } = new();

    public static ClaudeCodeResponse<T> CreateSuccess(T data, RateLimitInfo? rateLimitInfo = null)
    {
        return new ClaudeCodeResponse<T>
        {
            Success = true,
            Data = data,
            RateLimitInfo = rateLimitInfo
        };
    }

    public static ClaudeCodeResponse<T> CreateError(string error, string? errorCode = null, RateLimitInfo? rateLimitInfo = null)
    {
        return new ClaudeCodeResponse<T>
        {
            Success = false,
            Error = error,
            ErrorCode = errorCode,
            RateLimitInfo = rateLimitInfo
        };
    }
}