import type { ChatResponse } from '../ai_interface.js';
import type { VectorSearchResult } from '../agent_tools/vector_search_tool.js';
import type { NoteInfo, NotePathInfo, NoteHierarchyLevel } from '../agent_tools/note_navigator_tool.js';
import type { DecomposedQuery, SubQuery } from '../agent_tools/query_decomposition_tool.js';
import type { ThinkingProcess, ThinkingStep } from '../agent_tools/contextual_thinking_tool.js';
import type BAttribute from '../../../becca/entities/battribute.js';

/**
 * Interface for the AI service used by agent tools
 */
export interface LLMServiceInterface {
  generateChatCompletion(messages: Array<{
    role: 'user' | 'assistant' | 'system';
    content: string;
  }>, options?: {
    temperature?: number;
    maxTokens?: number;
    model?: string;
    stream?: boolean;
    systemPrompt?: string;
  }): Promise<ChatResponse>;

  /**
   * Generate search queries by decomposing a complex query into simpler ones
   * @param query The original user query to decompose
   * @returns An array of decomposed search queries
   */
  generateSearchQueries?(query: string): Promise<string[]>;
}

/**
 * Interface for tool initialization
 */
export interface AgentToolInitializationParams {
  aiServiceManager: LLMServiceInterface;
}

/**
 * Interface for agent tool manager
 */
export interface IAgentToolsManager {
  initialize(aiServiceManager: LLMServiceInterface): Promise<void>;
  isInitialized(): boolean;
  getAllTools(): {
    vectorSearch: IVectorSearchTool;
    noteNavigator: INoteNavigatorTool;
    queryDecomposition: IQueryDecompositionTool;
    contextualThinking: IContextualThinkingTool;
  };
  getVectorSearchTool(): IVectorSearchTool;
  getNoteNavigatorTool(): INoteNavigatorTool;
  getQueryDecompositionTool(): IQueryDecompositionTool;
  getContextualThinkingTool(): IContextualThinkingTool;
}

/**
 * Interface for context service used by vector search
 */
export interface IContextService {
  findRelevantNotesMultiQuery(queries: string[], contextNoteId: string | null, limit: number): Promise<VectorSearchResult[]>;
  processQuery(userQuestion: string, llmService: LLMServiceInterface, contextNoteId: string | null, showThinking: boolean): Promise<{
    context: string;
    sources: Array<{
      noteId: string;
      title: string;
      similarity: number;
    }>;
    thinking?: string;
  }>;
}

/**
 * Interface for vector search tool
 */
export interface IVectorSearchTool {
  setContextService(contextService: IContextService): void;
  search(
    query: string,
    contextNoteId?: string,
    searchOptions?: {
      limit?: number;
      threshold?: number;
      includeContent?: boolean;
    }
  ): Promise<VectorSearchResult[]>;
  searchNotes(query: string, options?: {
    parentNoteId?: string;
    maxResults?: number;
    similarityThreshold?: number;
  }): Promise<VectorSearchResult[]>;
  searchContentChunks(query: string, options?: {
    noteId?: string;
    maxResults?: number;
    similarityThreshold?: number;
  }): Promise<VectorSearchResult[]>;
  explainResults(query: string, results: VectorSearchResult[]): string;
}

/**
 * Interface for note navigator tool
 */
export interface INoteNavigatorTool {
  getNoteInfo(noteId: string): NoteInfo | null;
  getNotePathsFromRoot(noteId: string): NotePathInfo[];
  getNoteHierarchy(noteId: string, depth?: number): NoteHierarchyLevel | null;
  getNoteAttributes(noteId: string): BAttribute[];
  findPathBetweenNotes(fromNoteId: string, toNoteId: string): NotePathInfo | null;
  searchNotesByTitle(searchTerm: string, limit?: number): NoteInfo[];
  getNoteClones(noteId: string): Promise<NoteInfo[]>;
  getNoteContextDescription(noteId: string): Promise<string>;
  getNoteStructure(noteId: string): Promise<{
    noteId: string;
    title: string;
    type: string;
    childCount: number;
    attributes: Array<{name: string, value: string}>;
    parentPath: Array<{title: string, noteId: string}>;
  }>;
  getChildNotes(noteId: string, limit?: number): Promise<Array<{noteId: string, title: string}>>;
  getParentNotes(noteId: string): Promise<Array<{noteId: string, title: string}>>;
  getLinkedNotes(noteId: string, limit?: number): Promise<Array<{noteId: string, title: string, direction: 'from'|'to'}>>;
  getNotePath(noteId: string): Promise<string>;
}

/**
 * Interface for query decomposition tool
 */
export interface IQueryDecompositionTool {
  decomposeQuery(query: string, context?: string): DecomposedQuery;
  updateSubQueryAnswer(decomposedQuery: DecomposedQuery, subQueryId: string, answer: string): DecomposedQuery;
  synthesizeAnswer(decomposedQuery: DecomposedQuery): string;
  getQueryStatus(decomposedQuery: DecomposedQuery): string;
  assessQueryComplexity(query: string): number;
  generateSubQueryId(): string;
  createSubQueries(query: string, context?: string): SubQuery[];
}

/**
 * Interface for contextual thinking tool
 */
export interface IContextualThinkingTool {
  startThinking(query: string): string;
  addThinkingStep(
    processId: string,
    step: Omit<ThinkingStep, 'id'>,
    parentId?: string
  ): string;
  completeThinking(processId?: string): ThinkingProcess | null;
  getThinkingProcess(processId: string): ThinkingProcess | null;
  getActiveThinkingProcess(): ThinkingProcess | null;
  visualizeThinking(thinkingId: string): string;
  getThinkingSummary(thinkingId: string): string;
  resetActiveThinking(): void;
}