/**
 * Intelligence Layer Backend Adapter
 *
 * Provides TypeScript API for calling Rust intelligence commands.
 * This replaces the localStorage-based implementations in:
 * - agent-memory.ts (Phase 1)
 * - heartbeat-engine.ts (Phase 2)
 * - context-compactor.ts (Phase 2)
 * - reflection-engine.ts (Phase 3)
 * - agent-identity.ts (Phase 3)
 *
 * Usage:
 * ```typescript
 * import { intelligence } from './intelligence-backend';
 *
 * // Memory
 * const memoryId = await intelligence.memory.store({ ... });
 * const memories = await intelligence.memory.search({ query: '...' });
 *
 * // Heartbeat
 * await intelligence.heartbeat.init('agent-1');
 * await intelligence.heartbeat.start('agent-1');
 *
 * // Reflection
 * const result = await intelligence.reflection.reflect('agent-1', memories);
 * ```
 */

import { invoke } from '@tauri-apps/api/core';

// === Types ===

export interface MemoryEntryInput {
  agent_id: string;
  memory_type: string;
  content: string;
  importance?: number;
  source?: string;
  tags?: string[];
  conversation_id?: string;
}

export interface PersistentMemory {
  id: string;
  agent_id: string;
  memory_type: string;
  content: string;
  importance: number;
  source: string;
  tags: string;
  conversation_id: string | null;
  created_at: string;
  last_accessed_at: string;
  access_count: number;
  embedding: string | null;
}

export interface MemorySearchOptions {
  agent_id?: string;
  memory_type?: string;
  tags?: string[];
  query?: string;
  min_importance?: number;
  limit?: number;
  offset?: number;
}

export interface MemoryStats {
  total_entries: number;
  by_type: Record<string, number>;
  by_agent: Record<string, number>;
  oldest_entry: string | null;
  newest_entry: string | null;
  storage_size_bytes: number;
}

// Heartbeat types
export interface HeartbeatConfig {
  enabled: boolean;
  interval_minutes: number;
  quiet_hours_start: string | null;
  quiet_hours_end: string | null;
  notify_channel: 'ui' | 'desktop' | 'all';
  proactivity_level: 'silent' | 'light' | 'standard' | 'autonomous';
  max_alerts_per_tick: number;
}

export interface HeartbeatAlert {
  title: string;
  content: string;
  urgency: 'low' | 'medium' | 'high';
  source: string;
  timestamp: string;
}

export interface HeartbeatResult {
  status: 'ok' | 'alert';
  alerts: HeartbeatAlert[];
  checked_items: number;
  timestamp: string;
}

// Compactor types
export interface CompactableMessage {
  role: string;
  content: string;
  id?: string;
  timestamp?: string;
}

export interface CompactionResult {
  compacted_messages: CompactableMessage[];
  summary: string;
  original_count: number;
  retained_count: number;
  flushed_memories: number;
  tokens_before_compaction: number;
  tokens_after_compaction: number;
}

export interface CompactionCheck {
  should_compact: boolean;
  current_tokens: number;
  threshold: number;
  urgency: 'none' | 'soft' | 'hard';
}

// Reflection types
export interface MemoryEntryForAnalysis {
  memory_type: string;
  content: string;
  importance: number;
  access_count: number;
  tags: string[];
}

export interface PatternObservation {
  observation: string;
  frequency: number;
  sentiment: 'positive' | 'negative' | 'neutral';
  evidence: string[];
}

export interface ImprovementSuggestion {
  area: string;
  suggestion: string;
  priority: 'high' | 'medium' | 'low';
}

// Reflection identity proposal (from reflection engine, not yet persisted)
export interface ReflectionIdentityProposal {
  agent_id: string;
  field: string;
  current_value: string;
  proposed_value: string;
  reason: string;
}

export interface ReflectionResult {
  patterns: PatternObservation[];
  improvements: ImprovementSuggestion[];
  identity_proposals: ReflectionIdentityProposal[];
  new_memories: number;
  timestamp: string;
}

export interface ReflectionState {
  conversations_since_reflection: number;
  last_reflection_time: string | null;
  last_reflection_agent_id: string | null;
}

// Identity types
export interface IdentityFiles {
  soul: string;
  instructions: string;
  user_profile: string;
  heartbeat?: string;
}

export interface IdentityChangeProposal {
  id: string;
  agent_id: string;
  file: 'soul' | 'instructions';
  reason: string;
  current_content: string;
  suggested_content: string;
  status: 'pending' | 'approved' | 'rejected';
  created_at: string;
}

export interface IdentitySnapshot {
  id: string;
  agent_id: string;
  files: IdentityFiles;
  timestamp: string;
  reason: string;
}

// === Memory API ===

export const memory = {
  async init(): Promise<void> {
    await invoke('memory_init');
  },

  async store(entry: MemoryEntryInput): Promise<string> {
    return invoke('memory_store', { entry });
  },

  async get(id: string): Promise<PersistentMemory | null> {
    return invoke('memory_get', { id });
  },

  async search(options: MemorySearchOptions): Promise<PersistentMemory[]> {
    return invoke('memory_search', { options });
  },

  async delete(id: string): Promise<void> {
    await invoke('memory_delete', { id });
  },

  async deleteAll(agentId: string): Promise<number> {
    return invoke('memory_delete_all', { agentId });
  },

  async stats(): Promise<MemoryStats> {
    return invoke('memory_stats');
  },

  async export(): Promise<PersistentMemory[]> {
    return invoke('memory_export');
  },

  async import(memories: PersistentMemory[]): Promise<number> {
    return invoke('memory_import', { memories });
  },

  async dbPath(): Promise<string> {
    return invoke('memory_db_path');
  },

  async buildContext(
    agentId: string,
    query: string,
    maxTokens: number | null,
  ): Promise<{ systemPromptAddition: string; totalTokens: number; memoriesUsed: number }> {
    return invoke('memory_build_context', { agentId, query, maxTokens });
  },
};

// === Heartbeat API ===

export const heartbeat = {
  async init(agentId: string, config?: HeartbeatConfig): Promise<void> {
    await invoke('heartbeat_init', { agentId, config });
  },

  async start(agentId: string): Promise<void> {
    await invoke('heartbeat_start', { agentId });
  },

  async stop(agentId: string): Promise<void> {
    await invoke('heartbeat_stop', { agentId });
  },

  async tick(agentId: string): Promise<HeartbeatResult> {
    return invoke('heartbeat_tick', { agentId });
  },

  async getConfig(agentId: string): Promise<HeartbeatConfig> {
    return invoke('heartbeat_get_config', { agentId });
  },

  async updateConfig(agentId: string, config: HeartbeatConfig): Promise<void> {
    await invoke('heartbeat_update_config', { agentId, config });
  },

  async getHistory(agentId: string, limit?: number): Promise<HeartbeatResult[]> {
    return invoke('heartbeat_get_history', { agentId, limit });
  },
};

// === Compactor API ===

export const compactor = {
  estimateTokens(text: string): Promise<number> {
    return invoke('compactor_estimate_tokens', { text });
  },

  estimateMessagesTokens(messages: CompactableMessage[]): Promise<number> {
    return invoke('compactor_estimate_messages_tokens', { messages });
  },

  checkThreshold(
    messages: CompactableMessage[],
    config?: CompactionConfig
  ): Promise<CompactionCheck> {
    return invoke('compactor_check_threshold', { messages, config });
  },

  compact(
    messages: CompactableMessage[],
    agentId: string,
    conversationId?: string,
    config?: CompactionConfig
  ): Promise<CompactionResult> {
    return invoke('compactor_compact', {
      messages,
      agentId,
      conversationId,
      config,
    });
  },
};

export interface CompactionConfig {
  soft_threshold_tokens?: number;
  hard_threshold_tokens?: number;
  reserve_tokens?: number;
  memory_flush_enabled?: boolean;
  keep_recent_messages?: number;
  summary_max_tokens?: number;
  use_llm?: boolean;
  llm_fallback_to_rules?: boolean;
}

// === Reflection API ===

export const reflection = {
  async init(config?: ReflectionConfig): Promise<void> {
    await invoke('reflection_init', { config });
  },

  async recordConversation(): Promise<void> {
    await invoke('reflection_record_conversation');
  },

  async shouldReflect(): Promise<boolean> {
    return invoke('reflection_should_reflect');
  },

  async reflect(
    agentId: string,
    memories: MemoryEntryForAnalysis[]
  ): Promise<ReflectionResult> {
    return invoke('reflection_reflect', { agentId, memories });
  },

  async getHistory(limit?: number, agentId?: string): Promise<ReflectionResult[]> {
    return invoke('reflection_get_history', { limit, agentId });
  },

  async getState(): Promise<ReflectionState> {
    return invoke('reflection_get_state');
  },
};

export interface ReflectionConfig {
  trigger_after_conversations?: number;
  trigger_after_hours?: number;
  allow_soul_modification?: boolean;
  require_approval?: boolean;
  use_llm?: boolean;
  llm_fallback_to_rules?: boolean;
}

// === Identity API ===

export const identity = {
  async get(agentId: string): Promise<IdentityFiles> {
    return invoke('identity_get', { agentId });
  },

  async getFile(agentId: string, file: string): Promise<string> {
    return invoke('identity_get_file', { agentId, file });
  },

  async buildPrompt(
    agentId: string,
    memoryContext?: string
  ): Promise<string> {
    return invoke('identity_build_prompt', { agentId, memoryContext });
  },

  async updateUserProfile(agentId: string, content: string): Promise<void> {
    await invoke('identity_update_user_profile', { agentId, content });
  },

  async appendUserProfile(agentId: string, addition: string): Promise<void> {
    await invoke('identity_append_user_profile', { agentId, addition });
  },

  async proposeChange(
    agentId: string,
    file: 'soul' | 'instructions',
    suggestedContent: string,
    reason: string
  ): Promise<IdentityChangeProposal> {
    return invoke('identity_propose_change', {
      agentId,
      file,
      suggestedContent,
      reason,
    });
  },

  async approveProposal(proposalId: string): Promise<IdentityFiles> {
    return invoke('identity_approve_proposal', { proposalId });
  },

  async rejectProposal(proposalId: string): Promise<void> {
    await invoke('identity_reject_proposal', { proposalId });
  },

  async getPendingProposals(
    agentId?: string
  ): Promise<IdentityChangeProposal[]> {
    return invoke('identity_get_pending_proposals', { agentId });
  },

  async updateFile(
    agentId: string,
    file: string,
    content: string
  ): Promise<void> {
    await invoke('identity_update_file', { agentId, file, content });
  },

  async getSnapshots(
    agentId: string,
    limit?: number
  ): Promise<IdentitySnapshot[]> {
    return invoke('identity_get_snapshots', { agentId, limit });
  },

  async restoreSnapshot(
    agentId: string,
    snapshotId: string
  ): Promise<void> {
    await invoke('identity_restore_snapshot', { agentId, snapshotId });
  },

  async listAgents(): Promise<string[]> {
    return invoke('identity_list_agents');
  },

  async deleteAgent(agentId: string): Promise<void> {
    await invoke('identity_delete_agent', { agentId });
  },
};

// === Unified Export ===

export const intelligence = {
  memory,
  heartbeat,
  compactor,
  reflection,
  identity,
};

export default intelligence;