content: /*
   * Copyright 2024-2025 the original author or authors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.alibaba.cloud.ai.studio.admin.generator.service.dsl.adapters;
  
  import com.alibaba.cloud.ai.studio.admin.generator.model.App;
  import com.alibaba.cloud.ai.studio.admin.generator.model.AppMetadata;
  import com.alibaba.cloud.ai.studio.admin.generator.model.agent.Agent;
  import com.alibaba.cloud.ai.studio.admin.generator.service.dsl.DSLAdapter;
  import com.alibaba.cloud.ai.studio.admin.generator.service.dsl.DSLDialectType;
  import com.alibaba.cloud.ai.studio.admin.generator.service.dsl.Serializer;
  import com.alibaba.cloud.ai.studio.admin.generator.service.generator.agent.AgentTypeProvider;
  import com.alibaba.cloud.ai.studio.admin.generator.service.generator.agent.AgentTypeProviderRegistry;
  import com.fasterxml.jackson.databind.ObjectMapper;
  import org.springframework.beans.factory.annotation.Qualifier;
  import org.springframework.stereotype.Component;
  
  import java.util.*;
  import java.util.stream.Collectors;
  
  /**
   * @author yHong
   * @version 1.0
   * @since 2025/8/25 18:31
   */
  @Component("agentDSLAdapter")
  public class AgentDSLAdapter implements DSLAdapter {
  
  	private final Serializer serializer;
  
  	private final ObjectMapper objectMapper;
  
  	private final AgentTypeProviderRegistry providerRegistry;
  
  	public AgentDSLAdapter(@Qualifier("yaml") Serializer serializer, AgentTypeProviderRegistry providerRegistry) {
  		this.serializer = serializer;
  		this.objectMapper = new ObjectMapper();
  		this.providerRegistry = providerRegistry;
  	}
  
  	@Override
  	public String exportDSL(App app) {
  		if (!(app.getSpec() instanceof Agent agent)) {
  			throw new IllegalArgumentException("App spec is not Agent");
  		}
  		Map<String, Object> body = dumpAgent(agent);
  		body.put("name", app.getMetadata().getName());
  		body.put("description", app.getMetadata().getDescription());
  		body.put("mode", "agent");
  		return serializer.dump(body);
  	}
  
  	@Override
  	public App importDSL(String dsl) {
  		Map<String, Object> data = serializer.load(dsl);
  		validateDSLData(data);
  		Map<String, Object> root = getAgentRoot(data);
  		if (root == null)
  			root = data;
  
  		// 仅解析壳层字段，handle 原样透传
  		AppMetadata metadata = mapToMetadata(data);
  
  		Agent agent = new Agent();
  		agent.setAgentClass(asString(firstNonBlank((String) root.get("type"), (String) root.get("agent_class"))));
  		agent.setName(asString(root.get("name")));
  		agent.setDescription(asString(root.get("description")));
  		agent.setInstruction(asString(root.get("instruction")));
  		agent.setInputKey(asString(root.get("input_key")));
  		if (root.get("input_keys") instanceof List<?> iks) {
  			agent.setInputKeys((List<String>) (List<?>) iks);
  		}
  		agent.setOutputKey(asString(root.get("output_key")));
  
  		// 透传 handle（不感知字段）
  		if (root.get("handle") instanceof Map<?, ?> h) {
  			agent.setHandle((Map<String, Object>) h);
  		}
  
  		// 递归 sub_agents（只解析壳层 + 透传 handle）
  		if (root.get("sub_agents") instanceof List<?> children) {
  			List<Agent> subs = new java.util.ArrayList<>();
  			for (Object o : children) {
  				if (o instanceof Map<?, ?> m) {
  					Map<String, Object> childRoot = getAgentRoot((Map<String, Object>) m);
  					if (childRoot == null)
  						childRoot = (Map<String, Object>) m;
  					Agent child = new Agent();
  					child.setAgentClass(asString(
  							firstNonBlank((String) childRoot.get("type"), (String) childRoot.get("agent_class"))));
  					child.setName(asString(childRoot.get("name")));
  					child.setDescription(asString(childRoot.get("description")));
  					child.setInstruction(asString(childRoot.get("instruction")));
  					child.setInputKey(asString(childRoot.get("input_key")));
  					if (childRoot.get("input_keys") instanceof List<?> ciks) {
  						child.setInputKeys((List<String>) (List<?>) ciks);
  					}
  					child.setOutputKey(asString(childRoot.get("output_key")));
  					if (childRoot.get("handle") instanceof Map<?, ?> ch) {
  						child.setHandle((Map<String, Object>) ch);
  					}
  					subs.add(child);
  				}
  			}
  			agent.setSubAgents(subs);
  		}
  
  		return new App(metadata, agent);
  	}
  
  	private void validateDSLData(Map<String, Object> dslData) {
  		if (dslData == null) {
  			throw new IllegalArgumentException("invalid agent dsl: data is null");
  		}
  		Map<String, Object> root = getAgentRoot(dslData);
  		if (root == null) {
  			throw new IllegalArgumentException("invalid agent dsl: missing 'agent' object or flat agent fields");
  		}
  		String type = firstNonBlank((String) root.get("type"), (String) root.get("agent_class"));
  		String name = (String) root.get("name");
  		if (isBlank(type) || isBlank(name)) {
  			throw new IllegalArgumentException("invalid agent dsl: 'type/agent_class' and 'name' are required");
  		}
  		// 针对不同 Agent 类型的校验
  		validateAgentTypeSpecificConstraints(type, root);
  	}
  
  	private void validateAgentTypeSpecificConstraints(String type, Map<String, Object> root) {
  		if (type == null || root == null) {
  			return;
  		}
  
  		// 使用 AgentTypeProvider 进行校验
  		AgentTypeProvider provider = providerRegistry.get(type);
  		if (provider != null) {
  			provider.validateDSL(root);
  		}
  	}
  
  	private AppMetadata mapToMetadata(Map<String, Object> data) {
  		Map<String, Object> root = getAgentRoot(data);
  		if (root == null)
  			root = data;
  		AppMetadata metadata = new AppMetadata();
  		metadata.setMode(AppMetadata.AGENT_MODE);
  		metadata.setId(UUID.randomUUID().toString());
  		metadata.setName((String) root.getOrDefault("name", "agent-" + metadata.getId()));
  		metadata.setDescription((String) root.getOrDefault("description", ""));
  		return metadata;
  	}
  
  	private Map<String, Object> metadataToMap(AppMetadata metadata) {
  		Map<String, Object> data = new HashMap<>();
  		data.put("name", metadata.getName());
  		data.put("description", metadata.getDescription());
  		data.put("mode", "agent");
  		return data;
  	}
  
  	@Override
  	public Boolean supportDialect(DSLDialectType dialectType) {
  		return DSLDialectType.SAA_AGENT.equals(dialectType);
  	}
  
  	@SuppressWarnings("unchecked")
  	private Map<String, Object> getAgentRoot(Map<String, Object> data) {
  		Object a = data.get("agent");
  		if (a instanceof Map) {
  			return (Map<String, Object>) a;
  		}
  		// 兼容扁平结构：认为当前 data 自身即 agent
  		if (data.containsKey("agent_class") || data.containsKey("type") || data.containsKey("name")) {
  			return data;
  		}
  		return null;
  	}
  
  	private boolean isBlank(String s) {
  		return s == null || s.trim().isEmpty();
  	}
  
  	private String firstNonBlank(String a, String b) {
  		if (!isBlank(a))
  			return a;
  		if (!isBlank(b))
  			return b;
  		return null;
  	}
  
  	private Integer toInteger(Object v) {
  		if (v == null)
  			return null;
  		if (v instanceof Integer)
  			return (Integer) v;
  		if (v instanceof Long)
  			return ((Long) v).intValue();
  		if (v instanceof Number)
  			return ((Number) v).intValue();
  		if (v instanceof String) {
  			try {
  				return Integer.parseInt(((String) v).trim());
  			}
  			catch (Exception ignored) {
  			}
  		}
  		return null;
  	}
  
  	private static String asString(Object o) {
  		return o == null ? null : String.valueOf(o);
  	}
  
  	private Map<String, Object> dumpAgent(Agent agent) {
  		Map<String, Object> m = new HashMap<>();
  
  		// 基础属性
  		if (agent.getAgentClass() != null) {
  			m.put("type", agent.getAgentClass());
  		}
  		m.put("name", agent.getName());
  		m.put("description", agent.getDescription());
  		m.put("instruction", agent.getInstruction());
  		m.put("input_key", agent.getInputKey());
  		if (agent.getInputKeys() != null && !agent.getInputKeys().isEmpty()) {
  			m.put("input_keys", agent.getInputKeys());
  		}
  		m.put("output_key", agent.getOutputKey());
  
  		// LLM
  		Map<String, Object> llm = new HashMap<>();
  		if (agent.getModel() != null)
  			llm.put("model", agent.getModel());
  		if (agent.getChatOptions() != null && !agent.getChatOptions().isEmpty())
  			llm.put("options", agent.getChatOptions());
  		if (!llm.isEmpty())
  			m.put("llm", llm);
  		if (agent.getInstruction() != null)
  			m.put("instruction", agent.getInstruction());
  		if (agent.getMaxIterations() != null)
  			m.put("max_iterations", agent.getMaxIterations());
  
  		// 工具
  		if (agent.getTools() != null)
  			m.put("tools", agent.getTools());
  		if (agent.getToolConfig() != null && agent.getToolConfig().get("resolver") instanceof String) {
  			m.put("resolver", agent.getToolConfig().get("resolver"));
  		}
  
  		// hooks/state
  		if (agent.getHooks() != null && !agent.getHooks().isEmpty()) {
  			m.put("hooks", agent.getHooks());
  		}
  		if (agent.getStateConfig() != null && !agent.getStateConfig().isEmpty()) {
  			Map<String, Object> state = new HashMap<>();
  			state.put("strategies", agent.getStateConfig());
  			m.put("state", state);
  		}
  
  		// 导出 handle（如果存在）
  		if (agent.getHandle() != null && !agent.getHandle().isEmpty()) {
  			m.put("handle", agent.getHandle());
  		}
  
  		// 递归 sub_agents
  		if (agent.getSubAgents() != null && !agent.getSubAgents().isEmpty()) {
  			List<Map<String, Object>> subs = agent.getSubAgents().stream().map(this::dumpAgent).map(x -> {
  				Map<String, Object> item = new HashMap<>();
  				item.put("agent", x);
  				return item;
  			}).collect(Collectors.toList());
  			m.put("sub_agents", subs);
  		}
  
  		return m;
  	}
  
  }
  