package click.kamil.springstatemachineexporter.analysis.service;

import click.kamil.springstatemachineexporter.analysis.model.CallChain;
import click.kamil.springstatemachineexporter.analysis.model.EntryPoint;
import click.kamil.springstatemachineexporter.analysis.model.TriggerPoint;
import click.kamil.springstatemachineexporter.ast.common.CodebaseContext;
import org.junit.jupiter.api.Test;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.List;
import static org.assertj.core.api.Assertions.assertThat;

public class BuilderBugTest {

    @Test
    void shouldResolveEventFromBuilder() throws IOException {
        String source = """
                package com.example;
                
                public class Controller {
                    private StateMachine machine;
                    
                    public void process() {
                        EventWrapper wrapper = EventWrapper.builder()
                                .event(TransitionEnum.STATE_X)
                                .build();
                        machine.fire(wrapper.getEvent());
                    }
                }
                
                class StateMachine {
                    public void fire(TransitionEnum event) {}
                }
                
                class EventWrapper {
                    private TransitionEnum event;
                    public TransitionEnum getEvent() { return event; }
                    public static Builder builder() { return new Builder(); }
                    
                    public static class Builder {
                        private TransitionEnum event;
                        public Builder event(TransitionEnum e) { this.event = e; return this; }
                        public EventWrapper build() { 
                            EventWrapper w = new EventWrapper();
                            w.event = this.event;
                            return w;
                        }
                    }
                }
                
                enum TransitionEnum { STATE_X, STATE_Y }
                """;

        Path tempDir = Files.createTempDirectory("callgraph_test_builder");
        Files.writeString(tempDir.resolve("Config.java"), source);

        CodebaseContext context = new CodebaseContext();
        context.scan(tempDir);

        HeuristicCallGraphEngine engine = new HeuristicCallGraphEngine(context);

        EntryPoint entryPoint = EntryPoint.builder()
                .className("com.example.Controller")
                .methodName("process")
                .build();

        TriggerPoint trigger = TriggerPoint.builder()
                .className("com.example.StateMachine")
                .methodName("fire")
                .event("event")
                .build();

        List<CallChain> chains = engine.findChains(List.of(entryPoint), List.of(trigger));
        assertThat(chains).hasSize(1);
        System.out.println("Poly events: " + chains.get(0).getTriggerPoint().getPolymorphicEvents());
        assertThat(chains.get(0).getTriggerPoint().getPolymorphicEvents()).contains("TransitionEnum.STATE_X");
    }
}
