package com.superbiz.agent.config;

import com.superbiz.agent.harness.core.DiagnosisHarnessCore;
import com.superbiz.agent.harness.application.persistence.ChatRunStore;
import com.superbiz.agent.harness.tool.contract.MysqlToolRequest;
import com.superbiz.agent.harness.tool.mysql.MysqlSqlValidator;
import com.superbiz.agent.harness.tool.mysql.MysqlSecurityException;
import com.superbiz.agent.tool.LookupKnowledgeTool;
import com.superbiz.agent.tool.RetrievedDocTracker;
import com.superbiz.agent.service.KnowledgeContextPacker;
import com.superbiz.agent.service.KnowledgeDocumentRetriever;
import com.superbiz.agent.service.KnowledgeEvidencePostProcessor;
import com.superbiz.agent.service.KnowledgeQueryTransformer;
import com.superbiz.agent.service.LookupResultAssembler;
import com.superbiz.agent.service.ToolInvocationRecorder;
import com.superbiz.agent.repository.AgentStepRepository;
import org.springframework.ai.chat.model.ChatModel;
import org.springframework.boot.test.context.runner.ApplicationContextRunner;
import org.springframework.data.redis.core.RedisTemplate;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.junit.jupiter.api.Test;

import java.util.Map;
import java.util.concurrent.ThreadPoolExecutor;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.mock;

class HarnessChatConfigurationTest {

    @Test
    void defaultsArePositiveAndExecutorsAreBounded() {
        ChatHarnessProperties properties = new ChatHarnessProperties();
        properties.validate();
        HarnessChatConfiguration configuration = new HarnessChatConfiguration();

        ThreadPoolExecutor worker = configuration.chatWorkerExecutor(properties);
        ThreadPoolExecutor model = configuration.harnessModelExecutor(properties);
        try {
            assertTrue(worker.getQueue().remainingCapacity() > 0);
            assertTrue(model.getQueue().remainingCapacity() > 0);
            assertEquals(properties.getWorkerMaxPoolSize(), worker.getMaximumPoolSize());
            assertEquals(properties.getModelMaxPoolSize(), model.getMaximumPoolSize());
        } finally {
            worker.shutdownNow();
            model.shutdownNow();
        }
    }

    @Test
    void emptyMysqlConfigurationFailsClosedWithoutApplicationDatasource() {
        MysqlToolProperties properties = new MysqlToolProperties();
        HarnessChatConfiguration configuration = new HarnessChatConfiguration();
        assertTrue(configuration.harnessMysqlDataSources(properties).isEmpty());
        Map<String, com.superbiz.agent.harness.tool.mysql.MysqlDataSourceDefinition> definitions =
                configuration.harnessMysqlDefinitions(properties);
        MysqlSqlValidator validator = configuration.mysqlSqlValidator(definitions);

        assertThrows(MysqlSecurityException.class, () -> validator.validate(
                new MysqlToolRequest("application", "SELECT id FROM users", java.util.List.of())));
    }

    @Test
    void harnessConfigurationBuildsOneApplicationGraphWithControlledDependencies() {
        new ApplicationContextRunner()
                .withUserConfiguration(HarnessChatConfiguration.class)
                .withBean(ObjectMapper.class, ObjectMapper::new)
                .withBean(ChatModel.class, () -> mock(ChatModel.class))
                .withBean(RedisTemplate.class, () -> mock(RedisTemplate.class))
                .withBean(LookupKnowledgeTool.class, () -> mock(LookupKnowledgeTool.class))
                .withBean(KnowledgeQueryTransformer.class, () -> mock(KnowledgeQueryTransformer.class))
                .withBean(KnowledgeDocumentRetriever.class, () -> mock(KnowledgeDocumentRetriever.class))
                .withBean(KnowledgeEvidencePostProcessor.class, () -> mock(KnowledgeEvidencePostProcessor.class))
                .withBean(KnowledgeContextPacker.class, () -> mock(KnowledgeContextPacker.class))
                .withBean(LookupResultAssembler.class, () -> mock(LookupResultAssembler.class))
                .withBean(ToolInvocationRecorder.class, () -> mock(ToolInvocationRecorder.class))
                .withBean(RetrievedDocTracker.class, () -> mock(RetrievedDocTracker.class))
                .withBean(AgentStepRepository.class, () -> mock(AgentStepRepository.class))
                .withBean(ChatRunStore.class, () -> mock(ChatRunStore.class))
                .withBean(MysqlToolProperties.class, MysqlToolProperties::new)
                .run(context -> {
                    assertTrue(context.isRunning());
                    assertEquals(1, context.getBeansOfType(
                            com.superbiz.agent.harness.application.ChatApplicationUseCase.class).size());
                    assertTrue(context.containsBean("harnessModelExecutor"));
                    assertTrue(context.containsBean("chatWorkerExecutor"));
                });
    }
}