using System.Text.Json;
using MarketAlly.AIPlugin;

namespace MarketAlly.AIPlugin.Context
{
	/// <summary>
	/// High-level plugin that orchestrates conversation continuity by combining context retrieval, 
	/// storage, and search operations. Provides an easy interface for Claude to maintain context
	/// across long conversations and multiple sessions.
	/// </summary>
	[AIPlugin("ConversationContinuity", "Manages conversation continuity by retrieving relevant context, storing important information, and maintaining discussion flow across sessions")]
	public class ConversationContinuityPlugin : IAIPlugin
	{
		[AIParameter("Action to perform: 'initialize', 'store_decision', 'find_relevant', 'summarize_session', 'get_project_context'", required: true)]
		public string Action { get; set; } = "initialize";

		[AIParameter("Current conversation topic or focus area", required: false)]
		public string? Topic { get; set; }

		[AIParameter("Information to store (for store_decision action)", required: false)]
		public string? Information { get; set; }

		[AIParameter("Brief summary of the information (for store_decision action)", required: false)]
		public string? Summary { get; set; }

		[AIParameter("Search query to find relevant context (for find_relevant action)", required: false)]
		public string? SearchQuery { get; set; }

		[AIParameter("Project path to work with", required: false)]
		public string? ProjectPath { get; set; }

		[AIParameter("Priority level for stored information: 'low', 'medium', 'high', 'critical'", required: false)]
		public string Priority { get; set; } = "medium";

		[AIParameter("Tags to categorize information (comma-separated)", required: false)]
		public string? Tags { get; set; }

		[AIParameter("Session summary for session wrap-up", required: false)]
		public string? SessionSummary { get; set; }

		public IReadOnlyDictionary<string, Type> SupportedParameters => new Dictionary<string, Type>
		{
			["action"] = typeof(string),
			["topic"] = typeof(string),
			["information"] = typeof(string),
			["summary"] = typeof(string),
			["searchQuery"] = typeof(string),
			["searchquery"] = typeof(string),
			["projectPath"] = typeof(string),
			["projectpath"] = typeof(string),
			["priority"] = typeof(string),
			["tags"] = typeof(string),
			["sessionSummary"] = typeof(string),
			["sessionsummary"] = typeof(string)
		};

		public async Task<AIPluginResult> ExecuteAsync(IReadOnlyDictionary<string, object> parameters)
		{
			try
			{
				var action = parameters["action"].ToString()!.ToLower();
				var topic = parameters.TryGetValue("topic", out var t) ? t?.ToString() : null;
				var projectPath = parameters.TryGetValue("projectPath", out var pp) ? pp?.ToString() : null;

				switch (action)
				{
					case "initialize":
						return await InitializeSessionAsync(topic, projectPath);

					case "store_decision":
						return await StoreDecisionAsync(parameters, projectPath);

					case "find_relevant":
						return await FindRelevantContextAsync(parameters, projectPath);

					case "summarize_session":
						return await SummarizeSessionAsync(parameters, projectPath);

					case "get_project_context":
						return await GetProjectContextAsync(projectPath);

					default:
						return new AIPluginResult(new { Error = "Unknown action" }, $"Unknown action: {action}");
				}
			}
			catch (Exception ex)
			{
				return new AIPluginResult(ex, "Failed to execute conversation continuity action");
			}
		}

		private async Task<AIPluginResult> InitializeSessionAsync(string? topic, string? projectPath)
		{
			var initializationResult = new ConversationInitialization
			{
				SessionId = Guid.NewGuid().ToString(),
				StartTime = DateTime.UtcNow,
				Topic = topic,
				ProjectPath = projectPath ?? Directory.GetCurrentDirectory()
			};

			// Get recent conversation context
			var contextRetrieval = new ContextRetrievalPlugin();
			var contextResult = await contextRetrieval.ExecuteAsync(new Dictionary<string, object>
			{
				["contextType"] = "all",
				["projectPath"] = initializationResult.ProjectPath,
				["conversationLimit"] = 5,
				["maxContextSize"] = 30000
			});

			if (contextResult.Success && contextResult.Data != null)
			{
				initializationResult.RecentContext = contextResult.Data;
			}

			// If we have a specific topic, search for related previous discussions
			if (!string.IsNullOrEmpty(topic))
			{
				var searchPlugin = new ContextSearchPlugin();
				var searchResult = await searchPlugin.ExecuteAsync(new Dictionary<string, object>
				{
					["query"] = topic,
					["projectPath"] = initializationResult.ProjectPath,
					["maxResults"] = 5,
					["includeContent"] = false // Just summaries for initialization
				});

				if (searchResult.Success && searchResult.Data != null)
				{
					initializationResult.RelatedDiscussions = searchResult.Data;
				}
			}

			// Store the session initialization
			var storagePlugin = new ContextStoragePlugin();
			await storagePlugin.ExecuteAsync(new Dictionary<string, object>
			{
				["contextType"] = "milestone",
				["content"] = JsonSerializer.Serialize(initializationResult, new JsonSerializerOptions { WriteIndented = true }),
				["summary"] = $"Session initialized - Topic: {topic ?? "General"}",
				["tags"] = $"session-start,{topic ?? "general"}",
				["projectPath"] = initializationResult.ProjectPath,
				["priority"] = "medium"
			});

			return new AIPluginResult(initializationResult,
				$"Conversation initialized. Found {((dynamic?)initializationResult.RecentContext)?.ConversationHistory?.Entries?.Count ?? 0} recent context entries and {((dynamic?)initializationResult.RelatedDiscussions)?.Results?.Count ?? 0} related discussions.");
		}

		private async Task<AIPluginResult> StoreDecisionAsync(IReadOnlyDictionary<string, object> parameters, string? projectPath)
		{
			var information = parameters.TryGetValue("information", out var info) ? info?.ToString() : null;
			var summary = parameters.TryGetValue("summary", out var sum) ? sum?.ToString() : null;
			var priority = parameters.TryGetValue("priority", out var p) ? p?.ToString() : "medium";
			var tags = parameters.TryGetValue("tags", out var t) ? t?.ToString() : null;

			if (string.IsNullOrEmpty(information) || string.IsNullOrEmpty(summary))
			{
				return new AIPluginResult(new { Error = "Information and summary are required" },
					"Both 'information' and 'summary' parameters are required for storing decisions");
			}

			var storagePlugin = new ContextStoragePlugin();
			var result = await storagePlugin.ExecuteAsync(new Dictionary<string, object>
			{
				["contextType"] = "decision",
				["content"] = information,
				["summary"] = summary,
				["tags"] = tags ?? "decision",
				["projectPath"] = projectPath ?? Directory.GetCurrentDirectory(),
				["priority"] = priority,
				["metadata"] = JsonSerializer.Serialize(new { StoredBy = "ConversationContinuity", Timestamp = DateTime.UtcNow })
			});

			return result;
		}

		private async Task<AIPluginResult> FindRelevantContextAsync(IReadOnlyDictionary<string, object> parameters, string? projectPath)
		{
			var searchQuery = parameters.TryGetValue("searchQuery", out var sq) ? sq?.ToString() : null;
			var topic = parameters.TryGetValue("topic", out var t) ? t?.ToString() : null;

			var query = searchQuery ?? topic;
			if (string.IsNullOrEmpty(query))
			{
				return new AIPluginResult(new { Error = "Search query or topic is required" },
					"Either 'searchQuery' or 'topic' parameter is required for finding relevant context");
			}

			var searchPlugin = new ContextSearchPlugin();
			var result = await searchPlugin.ExecuteAsync(new Dictionary<string, object>
			{
				["query"] = query,
				["projectPath"] = projectPath ?? Directory.GetCurrentDirectory(),
				["maxResults"] = 8,
				["includeContent"] = true,
				["contextType"] = "all",
				["daysBack"] = 30 // Last 30 days for relevance
			});

			// Also get recent file changes that might be relevant
			var contextRetrieval = new ContextRetrievalPlugin();
			var changesResult = await contextRetrieval.ExecuteAsync(new Dictionary<string, object>
			{
				["contextType"] = "changes",
				["projectPath"] = projectPath ?? Directory.GetCurrentDirectory()
			});

			var combinedResult = new
			{
				SearchResults = result.Data,
				RecentChanges = changesResult.Data,
				Query = query,
				SearchPerformed = DateTime.UtcNow
			};

			return new AIPluginResult(combinedResult,
				$"Found relevant context for query: {query}");
		}

		private async Task<AIPluginResult> SummarizeSessionAsync(IReadOnlyDictionary<string, object> parameters, string? projectPath)
		{
			var sessionSummary = parameters.TryGetValue("sessionSummary", out var ss) ? ss?.ToString() : null;
			var topic = parameters.TryGetValue("topic", out var t) ? t?.ToString() : null;

			if (string.IsNullOrEmpty(sessionSummary))
			{
				return new AIPluginResult(new { Error = "Session summary is required" },
					"sessionSummary parameter is required for summarizing sessions");
			}

			var sessionWrapUp = new SessionSummary
			{
				SessionId = Guid.NewGuid().ToString(),
				EndTime = DateTime.UtcNow,
				Topic = topic,
				Summary = sessionSummary,
				ProjectPath = projectPath ?? Directory.GetCurrentDirectory()
			};

			// Store the session summary
			var storagePlugin = new ContextStoragePlugin();
			var result = await storagePlugin.ExecuteAsync(new Dictionary<string, object>
			{
				["contextType"] = "milestone",
				["content"] = JsonSerializer.Serialize(sessionWrapUp, new JsonSerializerOptions { WriteIndented = true }),
				["summary"] = $"Session summary - {topic ?? "General discussion"}",
				["tags"] = $"session-end,summary,{topic ?? "general"}",
				["projectPath"] = sessionWrapUp.ProjectPath,
				["priority"] = "high", // Session summaries are high priority for future reference
				["metadata"] = JsonSerializer.Serialize(new
				{
					SessionType = "Summary",
					Duration = "Unknown", // Could be calculated if we tracked session start
					TopicFocus = topic
				})
			});

			return new AIPluginResult(sessionWrapUp, "Session summarized and stored for future reference");
		}

		private async Task<AIPluginResult> GetProjectContextAsync(string? projectPath)
		{
			var contextRetrieval = new ContextRetrievalPlugin();
			var result = await contextRetrieval.ExecuteAsync(new Dictionary<string, object>
			{
				["contextType"] = "project",
				["projectPath"] = projectPath ?? Directory.GetCurrentDirectory(),
				["includeFileSummaries"] = true,
				["includeGitHistory"] = true,
				["maxContextSize"] = 40000
			});

			// Also get recent decisions and insights for this project
			var searchPlugin = new ContextSearchPlugin();
			var decisionsResult = await searchPlugin.ExecuteAsync(new Dictionary<string, object>
			{
				["query"] = "decision insight architecture",
				["projectPath"] = projectPath ?? Directory.GetCurrentDirectory(),
				["contextType"] = "decision",
				["maxResults"] = 5,
				["includeContent"] = false,
				["daysBack"] = 60
			});

			var combinedContext = new
			{
				ProjectInfo = result.Data,
				RecentDecisions = decisionsResult.Data,
				ContextRetrievedAt = DateTime.UtcNow
			};

			return new AIPluginResult(combinedContext, "Retrieved comprehensive project context");
		}
	}

	// Supporting classes for conversation continuity
	public class ConversationInitialization
	{
		public string SessionId { get; set; } = "";
		public DateTime StartTime { get; set; }
		public string? Topic { get; set; }
		public string ProjectPath { get; set; } = "";
		public object? RecentContext { get; set; }
		public object? RelatedDiscussions { get; set; }
	}

	public class SessionSummary
	{
		public string SessionId { get; set; } = "";
		public DateTime EndTime { get; set; }
		public string? Topic { get; set; }
		public string Summary { get; set; } = "";
		public string ProjectPath { get; set; } = "";
	}
}