/**
 * REST controller for per-tenant agent configuration (engine, prompt, turns, budget, tools).
 *
 * Endpoints (JWT validated by Kong gateway):
 *   GET    /api/v1/agent-config          → Get current tenant's config (returns defaults if none set)
 *   POST   /api/v1/agent-config          → Create new config
 *   PUT    /api/v1/agent-config/:id      → Update existing config
 */
import { Controller, Get, Post, Put, Body, Param } from '@nestjs/common';
import { TenantId } from '@it0/common';
import { AgentConfigService, UpdateAgentConfigDto } from '../../../infrastructure/services/agent-config.service';

@Controller('api/v1/agent-config')
export class AgentConfigController {
  constructor(private readonly configService: AgentConfigService) {}

  @Get()
  async getConfig(@TenantId() tenantId: string) {
    const config = await this.configService.findByTenantId(tenantId);
    if (!config) {
      return {
        engine: 'claude-cli',
        system_prompt: '',
        max_turns: 10,
        max_budget: 5.0,
        allowed_tools: ['Bash', 'Read', 'Write', 'Glob', 'Grep'],
      };
    }

    return {
      id: config.id,
      engine: config.engine,
      system_prompt: config.systemPrompt,
      max_turns: config.maxTurns,
      max_budget: config.maxBudget,
      allowed_tools: config.allowedTools,
    };
  }

  @Post()
  async createConfig(
    @TenantId() tenantId: string,
    @Body() dto: UpdateAgentConfigDto,
  ) {
    const config = await this.configService.create(tenantId, dto);
    return {
      id: config.id,
      engine: config.engine,
      system_prompt: config.systemPrompt,
      max_turns: config.maxTurns,
      max_budget: config.maxBudget,
      allowed_tools: config.allowedTools,
    };
  }

  @Put(':id')
  async updateConfig(
    @TenantId() tenantId: string,
    @Param('id') id: string,
    @Body() dto: UpdateAgentConfigDto,
  ) {
    const config = await this.configService.update(id, tenantId, dto);
    if (!config) {
      return { error: 'Config not found' };
    }
    return {
      id: config.id,
      engine: config.engine,
      system_prompt: config.systemPrompt,
      max_turns: config.maxTurns,
      max_budget: config.maxBudget,
      allowed_tools: config.allowedTools,
    };
  }
}