package com.mydreamjob.onboarding;

import com.mydreamjob.auth.JwtTokenProvider;
import com.mydreamjob.auth.User;
import com.mydreamjob.auth.UserRepository;
import com.mydreamjob.company.Company;
import com.mydreamjob.company.CompanyRepository;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
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.boot.test.mock.mockito.MockBean;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.http.MediaType;
import org.springframework.test.context.ActiveProfiles;
import org.springframework.test.context.TestPropertySource;
import org.springframework.test.web.servlet.MockMvc;

import java.time.LocalDateTime;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.atomic.AtomicLong;

import static org.assertj.core.api.Assertions.assertThat;
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.request.MockMvcRequestBuilders.put;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

@SpringBootTest
@AutoConfigureMockMvc
@ActiveProfiles("integration-test")
@TestPropertySource(properties =
        "spring.datasource.url=jdbc:h2:mem:onboarding_privacy;MODE=MySQL;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE")
class OnboardingPrivacyTest {

    private static final AtomicLong PHONE_SEQ = new AtomicLong(973_000_000L);

    @Autowired private MockMvc mockMvc;
    @Autowired private JwtTokenProvider jwtTokenProvider;
    @Autowired private UserRepository userRepository;
    @Autowired private CompanyRepository companyRepository;
    @Autowired private OnboardingChecklistItemRepository checklistItemRepository;
    @Autowired private StudentOnboardingProgressRepository progressRepository;
    @Autowired private CompanyKnowledgeRepository knowledgeRepository;

    @MockBean private RedisTemplate<String, Object> redisTemplate;

    @BeforeEach
    void clearData() {
        progressRepository.deleteAll();
        knowledgeRepository.deleteAll();
        checklistItemRepository.deleteAll();
        companyRepository.deleteAll();
        userRepository.deleteAll();
    }

    @Test
    void companyChecklistResponseDoesNotLeakPersistenceOrIdempotencyFields() throws Exception {
        Long companyUser = createUser(User.Role.COMPANY);
        createCompany(companyUser, "隐私企业");

        String body = mockMvc.perform(post("/onboarding/company/checklist-items")
                        .header("Authorization", bearer(companyUser))
                        .contentType(MediaType.APPLICATION_JSON)
                        .content("""
                                {
                                  "title": "隐私测试清单项",
                                  "description": "仅返回契约字段",
                                  "category": "ADMIN",
                                  "sortOrder": 100,
                                  "required": false,
                                  "idempotencyKey": "private-key"
                                }
                                """))
                .andExpect(status().isOk())
                .andReturn().getResponse().getContentAsString();

        assertThat(body).contains("itemId", "source", "itemKey", "title", "category");
        assertSensitiveFieldsAbsent(body);
        assertThat(body).doesNotContain("\"idempotencyKey\":", "\"requestHash\":",
                "\"scopeId\":", "\"scopeType\":", "\"companyId\":");
    }

    @Test
    void studentChecklistResponseDoesNotLeakStudentOrPersistenceIdentifiers() throws Exception {
        Long companyUser = createUser(User.Role.COMPANY);
        Long companyId = createCompany(companyUser, "学生隐私企业");
        Long student = createUser(User.Role.STUDENT);
        OnboardingChecklistItem item = checklistItemRepository.save(OnboardingChecklistItem.builder()
                .scopeType("STANDARD")
                .scopeId(0L)
                .companyId(null)
                .itemKey("privacy-standard")
                .title("隐私通用项")
                .description("说明")
                .category("DOCUMENT")
                .sortOrder(10)
                .required(true)
                .active(true)
                .build());
        progressRepository.save(StudentOnboardingProgress.builder()
                .studentUserId(student)
                .itemId(item.getId())
                .completed(true)
                .completedAt(LocalDateTime.now())
                .build());

        String body = mockMvc.perform(get("/onboarding/companies/{companyId}/checklist", companyId)
                        .header("Authorization", bearer(student)))
                .andExpect(status().isOk())
                .andReturn().getResponse().getContentAsString();

        assertThat(body).contains("companyId", "companyName", "items", "progressVersion");
        assertSensitiveFieldsAbsent(body);
        assertThat(body).doesNotContain("\"studentUserId\":", "\"passwordHash\":",
                "\"requestHash\":", "\"idempotencyKey\":");
    }

    @Test
    void studentKnowledgeOverviewDoesNotLeakOwnerOrModerationInternals() throws Exception {
        Long companyUser = createUser(User.Role.COMPANY);
        Long companyId = createCompany(companyUser, "知识隐私企业");
        Long student = createUser(User.Role.STUDENT);
        knowledgeRepository.save(CompanyKnowledge.builder()
                .companyId(companyId)
                .culture("文化")
                .workPolicies("制度")
                .onboardingGuide("指南")
                .build());

        String body = mockMvc.perform(get("/onboarding/companies/{companyId}/knowledge", companyId)
                        .header("Authorization", bearer(student)))
                .andExpect(status().isOk())
                .andReturn().getResponse().getContentAsString();

        assertThat(body).contains("knowledgeState", "company", "reviewSummary");
        assertSensitiveFieldsAbsent(body);
        assertThat(body).doesNotContain("\"companyId\":", "\"ownerUserId\":",
                "\"moderationReason\":", "\"reviewHash\":");
    }

    @Test
    void crossCompanyErrorDoesNotEchoTargetContentOrHashes() throws Exception {
        Long ownerA = createUser(User.Role.COMPANY);
        Long companyA = createCompany(ownerA, "内容企业A");
        Long ownerB = createUser(User.Role.COMPANY);
        createCompany(ownerB, "内容企业B");
        OnboardingChecklistItem item = checklistItemRepository.save(OnboardingChecklistItem.builder()
                .scopeType("COMPANY")
                .scopeId(companyA)
                .companyId(companyA)
                .itemKey("private-target-item")
                .title("不可泄露的目标标题")
                .description("不可泄露的说明")
                .category("ADMIN")
                .sortOrder(1)
                .required(false)
                .active(true)
                .idempotencyKey("private-target-key")
                .requestHash("b".repeat(64))
                .build());

        String body = mockMvc.perform(put("/onboarding/company/checklist-items/{itemId}", item.getId())
                        .header("Authorization", bearer(ownerB))
                        .contentType(MediaType.APPLICATION_JSON)
                        .content("""
                                {
                                  "title": "越权请求",
                                  "category": "ADMIN",
                                  "sortOrder": 1,
                                  "required": false,
                                  "active": true,
                                  "version": 0
                                }
                                """))
                .andExpect(status().isNotFound())
                .andReturn().getResponse().getContentAsString();

        assertThat(body).doesNotContain("不可泄露的目标标题", "不可泄露的说明",
                "private-target-key", "b".repeat(64), "private-target-item");
        assertSensitiveFieldsAbsent(body);
    }

    private void assertSensitiveFieldsAbsent(String body) {
        assertThat(body).doesNotContain(
                "ownerUserId",
                "studentUserId",
                "requestHash",
                "idempotencyKey",
                "moderationReason",
                "passwordHash",
                "ipAddress",
                "userAgent",
                "\"token\":",
                "\"accessToken\":");
    }

    private Long createCompany(Long ownerUserId, String name) {
        return companyRepository.save(Company.builder()
                .ownerUserId(ownerUserId)
                .name(name)
                .description("公司描述")
                .industry("软件")
                .website("https://example.com")
                .address("上海")
                .verified(true)
                .build()).getId();
    }

    private Long createUser(User.Role role) {
        return userRepository.save(User.builder()
                .phone(String.valueOf(PHONE_SEQ.getAndIncrement()))
                .nickname(role.name())
                .role(role)
                .roles(Set.of(role))
                .active(true)
                .verified(true)
                .build()).getId();
    }

    private String bearer(Long userId) {
        return "Bearer " + jwtTokenProvider.generateAccessToken(
                userId, String.valueOf(userId), Map.of("roles", "STUDENT"));
    }
}