package se.bilhalsning.controller;

import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.when;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.patch;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

import java.time.Instant;
import java.util.List;
import java.util.Optional;
import java.util.UUID;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.webmvc.test.autoconfigure.AutoConfigureMockMvc;
import org.springframework.security.test.context.support.WithMockUser;
import org.springframework.test.context.bean.override.mockito.MockitoBean;
import org.springframework.test.context.TestPropertySource;
import org.springframework.test.web.servlet.MockMvc;
import se.bilhalsning.dto.OrderResponse;
import se.bilhalsning.entity.User;
import se.bilhalsning.security.JwtService;
import se.bilhalsning.service.OrderService;
import se.bilhalsning.service.UserService;

@SpringBootTest
@AutoConfigureMockMvc
@TestPropertySource(properties = "app.jwt.secret=this-is-a-test-secret-that-is-at-least-32-bytes-long!!")
class OrderControllerTest {

    private static final String TEST_SECRET =
            "this-is-a-test-secret-that-is-at-least-32-bytes-long!!";

    @Autowired
    private MockMvc mockMvc;

    @MockitoBean
    private OrderService orderService;

    @MockitoBean
    private UserService userService;

    @Test
    void shouldReturn401WhenNotAuthenticated() throws Exception {
        mockMvc.perform(get("/api/orders"))
                .andExpect(status().isUnauthorized())
                .andExpect(jsonPath("$.message").exists());
    }

    @Test
    @WithMockUser(username = "test@bilhej.se")
    void shouldReturnOrdersForAuthenticatedUser() throws Exception {
        UUID userId = UUID.fromString("a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11");
        User user = new User();
        user.setId(userId);
        user.setEmail("test@bilhej.se");

        when(userService.findByEmail("test@bilhej.se")).thenReturn(Optional.of(user));

        when(orderService.getOrdersByUserId(userId)).thenReturn(List.of());

        mockMvc.perform(get("/api/orders"))
                .andExpect(status().isOk())
                .andExpect(jsonPath("$").isArray())
                .andExpect(jsonPath("$").isEmpty());
    }

    @Test
    @WithMockUser(username = "test@bilhej.se")
    void shouldReturnOrderWithAllFields() throws Exception {
        UUID userId = UUID.fromString("a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11");
        User user = new User();
        user.setId(userId);
        user.setEmail("test@bilhej.se");

        when(userService.findByEmail("test@bilhej.se")).thenReturn(Optional.of(user));

        se.bilhalsning.entity.Order order = new se.bilhalsning.entity.Order();
        order.setId(UUID.fromString("c1eebc99-9c0b-4ef8-bb6d-6bb9bd380a11"));
        order.setUserId(userId);
        order.setPlate("ABC123");
        order.setLetterText("Test letter");
        order.setStatus(se.bilhalsning.entity.OrderStatus.SENT);
        order.setTrackingId("PN123456789");

        when(orderService.getOrdersByUserId(userId)).thenReturn(List.of(order));

        mockMvc.perform(get("/api/orders"))
                .andExpect(status().isOk())
                .andExpect(jsonPath("$[0].id").value("c1eebc99-9c0b-4ef8-bb6d-6bb9bd380a11"))
                .andExpect(jsonPath("$[0].plate").value("ABC123"))
                .andExpect(jsonPath("$[0].letterText").value("Test letter"))
                .andExpect(jsonPath("$[0].status").value("sent"))
                .andExpect(jsonPath("$[0].trackingId").value("PN123456789"));
    }

    @Test
    @WithMockUser(username = "unknown@example.com")
    void shouldReturn401WhenUserNotFound() throws Exception {
        when(userService.findByEmail("unknown@example.com")).thenReturn(Optional.empty());

        mockMvc.perform(get("/api/orders"))
                .andExpect(status().isUnauthorized());
    }

    @Test
    void shouldReturn401WhenPostingWithoutAuth() throws Exception {
        mockMvc.perform(post("/api/orders")
                        .contentType("application/json")
                        .content("{\"plate\":\"ABC123\",\"letterText\":\"Hej\"}"))
                .andExpect(status().isUnauthorized())
                .andExpect(jsonPath("$.message").exists());
    }

    @Test
    void shouldReturn401WithSwedishMessageWhenTokenExpired() throws Exception {
        JwtService expiredJwtService = new JwtService(TEST_SECRET, -1000L);
        String expiredToken = expiredJwtService.generateToken("test@bilhej.se");

        mockMvc.perform(get("/api/orders")
                        .header("Authorization", "Bearer " + expiredToken))
                .andExpect(status().isUnauthorized())
                .andExpect(jsonPath("$.message").exists());
    }

    @Test
    void shouldReturn401WithMessageWhenNoAuthHeader() throws Exception {
        mockMvc.perform(get("/api/orders"))
                .andExpect(status().isUnauthorized())
                .andExpect(jsonPath("$.message")
                        .value(org.hamcrest.Matchers.containsString("session")));
    }

    @Test
    @WithMockUser(username = "test@bilhej.se")
    void shouldCreateOrderSuccessfully() throws Exception {
        UUID userId = UUID.fromString("a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11");
        User user = new User();
        user.setId(userId);
        user.setEmail("test@bilhej.se");

        when(userService.findByEmail("test@bilhej.se")).thenReturn(Optional.of(user));

        se.bilhalsning.entity.Order savedOrder = new se.bilhalsning.entity.Order();
        savedOrder.setId(UUID.fromString("d1eebc99-9c0b-4ef8-bb6d-6bb9bd380a11"));
        savedOrder.setUserId(userId);
        savedOrder.setPlate("ABC123");
        savedOrder.setLetterText("Hej fin bil!");
        savedOrder.setStatus(se.bilhalsning.entity.OrderStatus.PENDING_PAYMENT);

        when(orderService.createOrder(userId, "ABC123", "Hej fin bil!"))
                .thenReturn(savedOrder);

        mockMvc.perform(post("/api/orders")
                        .contentType("application/json")
                        .content("{\"plate\":\"ABC123\",\"letterText\":\"Hej fin bil!\"}"))
                .andExpect(status().isCreated())
                .andExpect(jsonPath("$.id").value("d1eebc99-9c0b-4ef8-bb6d-6bb9bd380a11"))
                .andExpect(jsonPath("$.plate").value("ABC123"))
                .andExpect(jsonPath("$.letterText").value("Hej fin bil!"))
                .andExpect(jsonPath("$.status").value("pending_payment"));
    }

    @Test
    @WithMockUser(username = "test@bilhej.se")
    void shouldRejectInvalidPlateFormat() throws Exception {
        mockMvc.perform(post("/api/orders")
                        .contentType("application/json")
                        .content("{\"plate\":\"INVALID\",\"letterText\":\"Hej\"}"))
                .andExpect(status().isBadRequest())
                .andExpect(jsonPath("$.message").value(org.hamcrest.Matchers.containsString("Ogiltigt registreringsnummer")));
    }

    @Test
    @WithMockUser(username = "test@bilhej.se")
    void shouldRejectEmptyLetterText() throws Exception {
        mockMvc.perform(post("/api/orders")
                        .contentType("application/json")
                        .content("{\"plate\":\"ABC123\",\"letterText\":\"\"}"))
                .andExpect(status().isBadRequest());
    }

    @Test
    @WithMockUser(username = "test@bilhej.se")
    void shouldRejectLetterTextOver1000Chars() throws Exception {
        String longText = "a".repeat(1001);
        mockMvc.perform(post("/api/orders")
                        .contentType("application/json")
                        .content("{\"plate\":\"ABC123\",\"letterText\":\"" + longText + "\"}"))
                .andExpect(status().isBadRequest());
    }

    @Test
    @WithMockUser(username = "test@bilhej.se")
    void shouldGetSingleOrderForOwner() throws Exception {
        UUID userId = UUID.fromString("a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11");
        UUID orderId = UUID.fromString("c1eebc99-9c0b-4ef8-bb6d-6bb9bd380a11");
        User user = new User();
        user.setId(userId);
        user.setEmail("test@bilhej.se");

        when(userService.findByEmail("test@bilhej.se")).thenReturn(Optional.of(user));

        se.bilhalsning.entity.Order order = new se.bilhalsning.entity.Order();
        order.setId(orderId);
        order.setUserId(userId);
        order.setPlate("ABC123");
        order.setLetterText("Test letter");
        order.setStatus(se.bilhalsning.entity.OrderStatus.PENDING_PAYMENT);

        when(orderService.getOrderById(orderId)).thenReturn(order);

        mockMvc.perform(get("/api/orders/" + orderId))
                .andExpect(status().isOk())
                .andExpect(jsonPath("$.id").value(orderId.toString()))
                .andExpect(jsonPath("$.plate").value("ABC123"))
                .andExpect(jsonPath("$.status").value("pending_payment"));
    }

    @Test
    @WithMockUser(username = "test@bilhej.se")
    void shouldReturn404WhenGettingOtherUsersOrder() throws Exception {
        UUID userId = UUID.fromString("a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11");
        UUID orderId = UUID.fromString("c1eebc99-9c0b-4ef8-bb6d-6bb9bd380a11");
        User user = new User();
        user.setId(userId);
        user.setEmail("test@bilhej.se");

        when(userService.findByEmail("test@bilhej.se")).thenReturn(Optional.of(user));

        se.bilhalsning.entity.Order order = new se.bilhalsning.entity.Order();
        order.setId(orderId);
        order.setUserId(UUID.randomUUID());

        when(orderService.getOrderById(orderId)).thenReturn(order);

        mockMvc.perform(get("/api/orders/" + orderId))
                .andExpect(status().isNotFound());
    }

    @Test
    @WithMockUser(username = "test@bilhej.se")
    void shouldPatchOrderSuccessfully() throws Exception {
        UUID userId = UUID.fromString("a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11");
        UUID orderId = UUID.fromString("c1eebc99-9c0b-4ef8-bb6d-6bb9bd380a11");
        User user = new User();
        user.setId(userId);
        user.setEmail("test@bilhej.se");

        when(userService.findByEmail("test@bilhej.se")).thenReturn(Optional.of(user));

        se.bilhalsning.entity.Order order = new se.bilhalsning.entity.Order();
        order.setId(orderId);
        order.setUserId(userId);
        order.setPlate("ABC123");
        order.setLetterText("Updated text");
        order.setStatus(se.bilhalsning.entity.OrderStatus.PENDING_PAYMENT);

        when(orderService.updatePendingOrder(any(), any(), any())).thenReturn(order);

        mockMvc.perform(patch("/api/orders/" + orderId)
                        .contentType("application/json")
                        .content("{\"letterText\":\"Updated text\"}"))
                .andExpect(status().isOk())
                .andExpect(jsonPath("$.letterText").value("Updated text"));
    }

    @Test
    @WithMockUser(username = "test@bilhej.se")
    void shouldRejectPatchWithEmptyLetterText() throws Exception {
        UUID orderId = UUID.fromString("c1eebc99-9c0b-4ef8-bb6d-6bb9bd380a11");

        mockMvc.perform(patch("/api/orders/" + orderId)
                        .contentType("application/json")
                        .content("{\"letterText\":\"\"}"))
                .andExpect(status().isBadRequest());
    }

    @Test
    @WithMockUser(username = "test@bilhej.se")
    void shouldCancelOrderSuccessfully() throws Exception {
        UUID userId = UUID.fromString("a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11");
        UUID orderId = UUID.fromString("c1eebc99-9c0b-4ef8-bb6d-6bb9bd380a11");
        User user = new User();
        user.setId(userId);
        user.setEmail("test@bilhej.se");

        when(userService.findByEmail("test@bilhej.se")).thenReturn(Optional.of(user));

        se.bilhalsning.entity.Order order = new se.bilhalsning.entity.Order();
        order.setId(orderId);
        order.setUserId(userId);
        order.setPlate("ABC123");
        order.setLetterText("Test letter");
        order.setStatus(se.bilhalsning.entity.OrderStatus.CANCELLED);

        when(orderService.cancelOrder(orderId, userId)).thenReturn(order);

        mockMvc.perform(post("/api/orders/" + orderId + "/cancel"))
                .andExpect(status().isOk())
                .andExpect(jsonPath("$.status").value("cancelled"));
    }
}