package de.gedoplan.seminar.jpa.exercise;

import static org.junit.jupiter.params.provider.Arguments.arguments;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

import java.util.List;
import java.util.stream.Stream;

import org.junit.jupiter.api.MethodOrderer;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestMethodOrder;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.MethodSource;
import org.slf4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.http.MediaType;
import org.springframework.test.web.servlet.MockMvc;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.type.CollectionType;

import de.gedoplan.seminar.jpa.exercise.domain.Highway;
import de.gedoplan.seminar.jpa.exercise.domain.Junction;
import de.gedoplan.seminar.jpa.exercise.domain.TrafficJam;
import de.gedoplan.seminar.jpa.exercise.domain.TrafficJamCause;
import de.gedoplan.seminar.jpa.exercise.domain.TrafficJamKind;

@TestMethodOrder(MethodOrderer.MethodName.class)
@AutoConfigureMockMvc
@SpringBootTest
public class Exercise07Test {
	
	private static String MESSAGE_FORMAT = "%s from %s to %s: %d km %s between %s and %s caused by %s\n";

	@Autowired
	MockMvc mockMvc;

	@Autowired
	private ObjectMapper mapper;

	@Autowired
	private Logger logger;

	@ParameterizedTest
	@MethodSource("getTestData")
	void test01_insert(String junctionStart, String junctionEnd, Integer length, TrafficJamKind kind,
			TrafficJamCause cause) throws Exception {

		TrafficJam trafficJam = new TrafficJam(loadJunctionId(junctionStart), loadJunctionId(junctionEnd), length, kind,
				cause);
		mockMvc.perform(post("/trafficjams").contentType(MediaType.APPLICATION_JSON)
				.content(mapper.writeValueAsString(trafficJam))).andExpect(status().isOk());
	}

	@Test
	void test02_outputTrafficJams() throws Exception {
		parse(mockMvc.perform(get("/trafficjams")).andExpect(status().isOk()).andReturn().getResponse()
				.getContentAsString(), TrafficJam.class)
		.stream().map(this::toMessage).forEach(logger::info);

	}
	
	private String toMessage(TrafficJam trafficJam) {
		Junction start = trafficJam.getStart();
	    Highway highway = start.getHighway();
	    Junction end = trafficJam.getEnd();
	    return String.format(MESSAGE_FORMAT,
	      highway.getName(), highway.getOrigin(), highway.getDestination(),
	      trafficJam.getLength(), trafficJam.getKind(),
	      start.getName(), end.getName(),
	      trafficJam.getCause());
	}

	private static Stream<Arguments> getTestData() {
		return Stream.of(
				arguments("Bielefeld-Ost", "Ostwestfalen/Lippe", 2, TrafficJamKind.CONGESTION,
						TrafficJamCause.ACCIDENT),
				arguments("Westhofener Kreuz", "Schwerte", 8, TrafficJamKind.SLOW_MOVING_TRAFFIC,
						TrafficJamCause.ROAD_WORKS));
	}


	private Junction loadJunctionId(String name) throws Exception {
		return mapper.readValue(mockMvc.perform(get("/junctions/loadByName").param("name", name))
				.andExpect(status().isOk()).andReturn().getResponse().getContentAsString(), Junction.class);
	}

	private <T> List<T> parse(String json, Class<T> type) {
		CollectionType javaType = mapper.getTypeFactory().constructCollectionType(List.class, type);
		try {
			return mapper.readValue(json, javaType);
		} catch (JsonProcessingException e) {
			throw new RuntimeException(e);
		}
	}

}