/**
 * kernel-agent.ts - Agent & Clone management methods for KernelClient
 *
 * Installed onto KernelClient.prototype via installAgentMethods().
 */

import { invoke } from '@tauri-apps/api/core';
import type { KernelClient } from './kernel-client';
import type { AgentInfo, CreateAgentRequest, CreateAgentResponse } from './kernel-types';

export function installAgentMethods(ClientClass: { prototype: KernelClient }): void {
  const proto = ClientClass.prototype as unknown as Record<string, unknown>;

  // ─── Agent Management ───

  /**
   * List all agents
   */
  proto.listAgents = async function (this: KernelClient): Promise<AgentInfo[]> {
    return invoke<AgentInfo[]>('agent_list');
  };

  /**
   * Get agent by ID
   */
  proto.getAgent = async function (this: KernelClient, agentId: string): Promise<AgentInfo | null> {
    return invoke<AgentInfo | null>('agent_get', { agentId });
  };

  /**
   * Create a new agent
   */
  proto.createAgent = async function (this: KernelClient, request: CreateAgentRequest): Promise<CreateAgentResponse> {
    return invoke<CreateAgentResponse>('agent_create', {
      request: {
        name: request.name,
        description: request.description,
        systemPrompt: request.systemPrompt,
        soul: request.soul,
        provider: request.provider || 'anthropic',
        model: request.model || 'claude-sonnet-4-20250514',
        maxTokens: request.maxTokens || 4096,
        temperature: request.temperature || 0.7,
      },
    });
  };

  /**
   * Delete an agent
   */
  proto.deleteAgent = async function (this: KernelClient, agentId: string): Promise<void> {
    return invoke('agent_delete', { agentId });
  };

  // ─── Clone/Agent Adaptation (GatewayClient interface compatibility) ───

  /**
   * List clones — maps to listAgents() with field adaptation
   */
  proto.listClones = async function (this: KernelClient): Promise<{ clones: any[] }> {
    const agents = await this.listAgents();
    const clones = agents.map((agent) => ({
      id: agent.id,
      name: agent.name,
      role: agent.description,
      model: agent.model,
      createdAt: new Date().toISOString(),
    }));
    return { clones };
  };

  /**
   * Create clone — maps to createAgent()
   */
  proto.createClone = async function (this: KernelClient, opts: {
    name: string;
    role?: string;
    model?: string;
    personality?: string;
    communicationStyle?: string;
    scenarios?: string[];
    emoji?: string;
    notes?: string;
    [key: string]: unknown;
  }): Promise<{ clone: any }> {
    // Build soul content from personality data
    const soulParts: string[] = [];
    if (opts.personality) soulParts.push(`## 性格\n${opts.personality}`);
    if (opts.communicationStyle) soulParts.push(`## 沟通风格\n${opts.communicationStyle}`);
    if (opts.scenarios?.length) soulParts.push(`## 使用场景\n${opts.scenarios.join(', ')}`);
    if (opts.notes) soulParts.push(`## 备注\n${opts.notes}`);
    const soul = soulParts.length > 0 ? soulParts.join('\n\n') : undefined;

    const response = await this.createAgent({
      name: opts.name,
      description: opts.role,
      model: opts.model,
      soul,
    });
    const clone = {
      id: response.id,
      name: response.name,
      role: opts.role,
      model: opts.model,
      personality: opts.personality,
      communicationStyle: opts.communicationStyle,
      emoji: opts.emoji,
      scenarios: opts.scenarios,
      createdAt: new Date().toISOString(),
    };
    return { clone };
  };

  /**
   * Delete clone — maps to deleteAgent()
   */
  proto.deleteClone = async function (this: KernelClient, id: string): Promise<void> {
    return this.deleteAgent(id);
  };

  /**
   * Update clone — maps to kernel agent_update
   */
  proto.updateClone = async function (this: KernelClient, id: string, updates: Record<string, unknown>): Promise<{ clone: unknown }> {
    await invoke('agent_update', {
      agentId: id,
      updates: {
        name: updates.name as string | undefined,
        description: updates.description as string | undefined,
        systemPrompt: updates.systemPrompt as string | undefined,
        model: updates.model as string | undefined,
        provider: updates.provider as string | undefined,
        maxTokens: updates.maxTokens as number | undefined,
        temperature: updates.temperature as number | undefined,
      },
    });

    // Return updated clone representation
    const clone = {
      id,
      name: updates.name,
      role: updates.description || updates.role,
      model: updates.model,
      personality: updates.personality,
      communicationStyle: updates.communicationStyle,
      systemPrompt: updates.systemPrompt,
    };
    return { clone };
  };
}