import { ComponentFixture, TestBed } from '@angular/core/testing';
import { ActivatedRoute, convertToParamMap, Router } from '@angular/router';
import { provideRouter } from '@angular/router';
import { of } from 'rxjs';
import { vi } from 'vitest';
import { IssueDetail } from './issue-detail';
import { IssueEntity, IssuesStore } from '../issues.store';

const makeIssue = (overrides: Partial<IssueEntity> = {}): IssueEntity => ({
  id: 99,
  type: 'Story',
  assignee: '',
  epic: '',
  name: 'Test Issue',
  dueDate: '',
  description: '',
  estimatedTime: null,
  dependsOnIds: [],
  comments: [],
  priority: 'Moyenne',
  status: 'draft',
  progress: 0,
  ...overrides,
});

function makeRoute(id = '1', path = 'issues/:id') {
  return {
    snapshot: {
      routeConfig: { path },
      paramMap: convertToParamMap(id ? { id } : {}),
      queryParamMap: convertToParamMap({}),
    },
    paramMap: of(convertToParamMap(id ? { id } : {})),
  };
}

describe('IssueDetail — existing issue', () => {
  let component: IssueDetail;
  let fixture: ComponentFixture<IssueDetail>;
  let store: IssuesStore;
  let router: Router;

  beforeEach(async () => {
    localStorage.clear();
    await TestBed.configureTestingModule({
      imports: [IssueDetail],
      providers: [
        provideRouter([]),
        { provide: ActivatedRoute, useValue: makeRoute('1') },
      ],
    }).compileComponents();

    store = TestBed.inject(IssuesStore);
    router = TestBed.inject(Router);
    fixture = TestBed.createComponent(IssueDetail);
    component = fixture.componentInstance;
    await fixture.whenStable();
  });

  afterEach(() => {
    localStorage.clear();
  });

  it('should create', () => {
    expect(component).toBeTruthy();
  });

  it('isNewIssueRoute is false', () => {
    expect((component as any).isNewIssueRoute).toBe(false);
  });

  it('loads the issue from the route param', () => {
    expect((component as any).issue.id).toBe(1);
  });

  describe('updateStatus', () => {
    it('updates the status and persists to the store', () => {
      (component as any).updateStatus('done');
      expect((component as any).issue.status).toBe('done');
      expect(store.getById(1)?.status).toBe('done');
    });
  });

  describe('toggleMoreMenu / closeMoreMenu', () => {
    it('toggleMoreMenu switches moreMenuOpen', () => {
      expect((component as any).moreMenuOpen).toBe(false);
      (component as any).toggleMoreMenu();
      expect((component as any).moreMenuOpen).toBe(true);
      (component as any).toggleMoreMenu();
      expect((component as any).moreMenuOpen).toBe(false);
    });

    it('closeMoreMenu sets moreMenuOpen to false', () => {
      (component as any).moreMenuOpen = true;
      (component as any).closeMoreMenu();
      expect((component as any).moreMenuOpen).toBe(false);
    });
  });

  describe('saveIssue', () => {
    it('persists the issue to the store', () => {
      (component as any).issue.name = 'Renamed';
      (component as any).saveIssue();
      expect(store.getById(1)?.name).toBe('Renamed');
    });

    it('does nothing when name is blank', () => {
      const countBefore = store.issues().length;
      (component as any).issue.name = '   ';
      (component as any).saveIssue();
      expect(store.issues().length).toBe(countBefore);
    });
  });

  describe('deleteIssue', () => {
    it('removes the issue and navigates to /issues', async () => {
      const spy = vi.spyOn(router, 'navigate').mockResolvedValue(true);
      (component as any).deleteIssue();
      expect(store.getById(1)).toBeUndefined();
      expect(spy).toHaveBeenCalledWith(['/issues']);
    });
  });

  describe('cancelCreation', () => {
    it('navigates to /issues', async () => {
      const spy = vi.spyOn(router, 'navigate').mockResolvedValue(true);
      (component as any).cancelCreation();
      expect(spy).toHaveBeenCalledWith(['/issues']);
    });
  });

  describe('dependency management', () => {
    it('dependencyIds returns the issue dependsOnIds', () => {
      (component as any).issue.dependsOnIds = [2, 3];
      expect((component as any).dependencyIds).toEqual([2, 3]);
    });

    it('availableCandidates excludes current issue', () => {
      const candidates: IssueEntity[] = (component as any).availableCandidates;
      expect(candidates.some((i) => i.id === 1)).toBe(false);
    });

    it('availableCandidates excludes existing dependencies', () => {
      (component as any).issue.dependsOnIds = [2];
      const candidates: IssueEntity[] = (component as any).availableCandidates;
      expect(candidates.some((i) => i.id === 2)).toBe(false);
    });

    it('resolveDependency returns the matching issue', () => {
      const resolved = (component as any).resolveDependency(2);
      expect(resolved?.id).toBe(2);
    });

    it('resolveDependency returns undefined for unknown id', () => {
      expect((component as any).resolveDependency(9999)).toBeUndefined();
    });

    it('openAddDependency sets showAddDependency to true', () => {
      (component as any).openAddDependency();
      expect((component as any).showAddDependency).toBe(true);
      expect((component as any).selectedCandidateId).toBeNull();
    });

    it('cancelAddDependency hides the form and resets candidate', () => {
      (component as any).showAddDependency = true;
      (component as any).selectedCandidateId = 2;
      (component as any).cancelAddDependency();
      expect((component as any).showAddDependency).toBe(false);
      expect((component as any).selectedCandidateId).toBeNull();
    });

    it('confirmAddDependency adds the selected id and saves', () => {
      (component as any).selectedCandidateId = 2;
      (component as any).confirmAddDependency();
      expect((component as any).issue.dependsOnIds).toContain(2);
      expect(store.getById(1)?.dependsOnIds).toContain(2);
      expect((component as any).showAddDependency).toBe(false);
    });

    it('confirmAddDependency does nothing when no candidate is selected', () => {
      (component as any).selectedCandidateId = null;
      (component as any).confirmAddDependency();
      expect((component as any).issue.dependsOnIds).toEqual([]);
    });

    it('removeDependency removes the id and saves', () => {
      (component as any).issue.dependsOnIds = [2, 3];
      store.upsert({ ...(component as any).issue });
      (component as any).removeDependency(2);
      expect((component as any).issue.dependsOnIds).not.toContain(2);
      expect((component as any).issue.dependsOnIds).toContain(3);
    });
  });

  describe('estimatedTimeValue getter / setter', () => {
    it('getter returns issue.estimatedTime', () => {
      (component as any).issue.estimatedTime = 8;
      expect((component as any).estimatedTimeValue).toBe(8);
    });

    it('setter converts string to number', () => {
      (component as any).estimatedTimeValue = '3.5';
      expect((component as any).issue.estimatedTime).toBe(3.5);
    });

    it('setter stores null when value is null', () => {
      (component as any).estimatedTimeValue = null;
      expect((component as any).issue.estimatedTime).toBeNull();
    });
  });

  describe('issueTypeValue getter / setter', () => {
    it('getter returns issue.type', () => {
      (component as any).issue.type = 'Bug';
      expect((component as any).issueTypeValue).toBe('Bug');
    });

    it('setter updates issue.type', () => {
      (component as any).issueTypeValue = 'Epic';
      expect((component as any).issue.type).toBe('Epic');
    });
  });

  describe('isEpicIssue', () => {
    it('is false for Story type', () => {
      (component as any).issue.type = 'Story';
      expect((component as any).isEpicIssue).toBe(false);
    });

    it('is true for Epic type', () => {
      (component as any).issue.type = 'Epic';
      expect((component as any).isEpicIssue).toBe(true);
    });
  });

  describe('getBadgeClass / typeBadgeClass', () => {
    it('typeBadgeClass returns class for current issue type', () => {
      (component as any).issue.type = 'Bug';
      expect((component as any).typeBadgeClass).toBe('text-bg-danger');
    });

    it('getBadgeClass maps Bug to text-bg-danger', () => {
      expect((component as any).getBadgeClass('Bug')).toBe('text-bg-danger');
    });

    it('getBadgeClass maps Study to text-bg-secondary', () => {
      expect((component as any).getBadgeClass('Study')).toBe('text-bg-secondary');
    });

    it('getBadgeClass maps Story to text-bg-success', () => {
      expect((component as any).getBadgeClass('Story')).toBe('text-bg-success');
    });

    it('getBadgeClass maps Task to text-bg-primary', () => {
      expect((component as any).getBadgeClass('Task')).toBe('text-bg-primary');
    });

    it('getBadgeClass maps Technical Story to text-bg-warning', () => {
      expect((component as any).getBadgeClass('Technical Story')).toBe('text-bg-warning');
    });

    it('getBadgeClass maps Epic to text-bg-info', () => {
      expect((component as any).getBadgeClass('Epic')).toBe('text-bg-info');
    });
  });

  describe('epicIssues / epicIssueId', () => {
    it('epicIssues returns only Epic-type issues', () => {
      store.upsert(makeIssue({ id: 100, type: 'Epic', name: 'My Epic' }));
      const epics: IssueEntity[] = (component as any).epicIssues;
      expect(epics.every((e) => e.type === 'Epic')).toBe(true);
      expect(epics.some((e) => e.id === 100)).toBe(true);
    });

    it('epicIssueId returns the id of the linked epic', () => {
      store.upsert(makeIssue({ id: 100, type: 'Epic', name: 'Linked Epic' }));
      (component as any).issue.epic = 'Linked Epic';
      expect((component as any).epicIssueId).toBe(100);
    });

    it('epicIssueId returns null when no matching epic', () => {
      (component as any).issue.epic = '';
      expect((component as any).epicIssueId).toBeNull();
    });
  });

  describe('navigateToEpic', () => {
    it('navigates to the epic issue', async () => {
      store.upsert(makeIssue({ id: 100, type: 'Epic', name: 'Nav Epic' }));
      (component as any).issue.epic = 'Nav Epic';
      const spy = vi.spyOn(router, 'navigate').mockResolvedValue(true);
      (component as any).navigateToEpic();
      expect(spy).toHaveBeenCalledWith(['/issues', 100]);
    });

    it('does nothing when no matching epic is found', () => {
      (component as any).issue.epic = 'Ghost Epic';
      const spy = vi.spyOn(router, 'navigate').mockResolvedValue(true);
      (component as any).navigateToEpic();
      expect(spy).not.toHaveBeenCalled();
    });
  });

  describe('openComposedIssue', () => {
    it('navigates to the composed issue detail', async () => {
      const spy = vi.spyOn(router, 'navigate').mockResolvedValue(true);
      (component as any).openComposedIssue(42);
      expect(spy).toHaveBeenCalledWith(['/issues', 42]);
    });
  });

  describe('composedIssues / epicCandidates', () => {
    beforeEach(() => {
      (component as any).issue.type = 'Epic';
      (component as any).issue.name = 'Test Epic';
    });

    it('composedIssues includes issues whose epic matches the current name', () => {
      store.upsert(makeIssue({ id: 200, name: 'Child', epic: 'Test Epic' }));
      const composed: IssueEntity[] = (component as any).composedIssues;
      expect(composed.some((i) => i.id === 200)).toBe(true);
    });

    it('composedIssues includes issues that depend on the current issue', () => {
      store.upsert(makeIssue({ id: 201, name: 'Dep', dependsOnIds: [1] }));
      const composed: IssueEntity[] = (component as any).composedIssues;
      expect(composed.some((i) => i.id === 201)).toBe(true);
    });

    it('composedIssues does not include the current issue itself', () => {
      const composed: IssueEntity[] = (component as any).composedIssues;
      expect(composed.some((i) => i.id === 1)).toBe(false);
    });

    it('epicCandidates excludes already composed issues', () => {
      store.upsert(makeIssue({ id: 200, name: 'Child', epic: 'Test Epic' }));
      const candidates: IssueEntity[] = (component as any).epicCandidates;
      expect(candidates.some((i) => i.id === 200)).toBe(false);
    });
  });

  describe('create-in-epic flow', () => {
    beforeEach(() => {
      (component as any).issue.type = 'Epic';
      (component as any).issue.name = 'My Epic';
    });

    it('openCreateInEpic shows the create form and hides add form', () => {
      (component as any).showAddToEpic = true;
      (component as any).openCreateInEpic();
      expect((component as any).showCreateInEpic).toBe(true);
      expect((component as any).showAddToEpic).toBe(false);
    });

    it('cancelCreateInEpic hides the form and clears the name', () => {
      (component as any).showCreateInEpic = true;
      (component as any).newIssueName = 'Draft';
      (component as any).cancelCreateInEpic();
      expect((component as any).showCreateInEpic).toBe(false);
      expect((component as any).newIssueName).toBe('');
    });

    it('confirmCreateInEpic creates a child issue linked to the epic', () => {
      (component as any).newIssueName = 'Child Issue';
      const before = store.issues().length;
      (component as any).confirmCreateInEpic();
      expect(store.issues().length).toBe(before + 1);
      const created = store.issues().find((i) => i.name === 'Child Issue');
      expect(created?.epic).toBe('My Epic');
      expect(created?.type).toBe('Story');
    });

    it('confirmCreateInEpic resets the form', () => {
      (component as any).newIssueName = 'Child Issue';
      (component as any).confirmCreateInEpic();
      expect((component as any).showCreateInEpic).toBe(false);
      expect((component as any).newIssueName).toBe('');
    });

    it('confirmCreateInEpic does nothing when name is blank', () => {
      (component as any).newIssueName = '  ';
      const before = store.issues().length;
      (component as any).confirmCreateInEpic();
      expect(store.issues().length).toBe(before);
    });
  });

  describe('add-to-epic flow', () => {
    beforeEach(() => {
      (component as any).issue.type = 'Epic';
      (component as any).issue.name = 'My Epic';
    });

    it('openAddToEpic shows the add form', () => {
      (component as any).openAddToEpic();
      expect((component as any).showAddToEpic).toBe(true);
      expect((component as any).selectedEpicCandidateId).toBeNull();
    });

    it('cancelAddToEpic hides the form', () => {
      (component as any).showAddToEpic = true;
      (component as any).selectedEpicCandidateId = 2;
      (component as any).cancelAddToEpic();
      expect((component as any).showAddToEpic).toBe(false);
      expect((component as any).selectedEpicCandidateId).toBeNull();
    });

    it('confirmAddToEpic assigns the epic name to the selected issue', () => {
      (component as any).selectedEpicCandidateId = 2;
      (component as any).confirmAddToEpic();
      expect(store.getById(2)?.epic).toBe('My Epic');
      expect((component as any).showAddToEpic).toBe(false);
    });

    it('confirmAddToEpic does nothing when no candidate is selected', () => {
      const epicBefore = store.getById(2)?.epic;
      (component as any).selectedEpicCandidateId = null;
      (component as any).confirmAddToEpic();
      expect(store.getById(2)?.epic).toBe(epicBefore);
    });
  });

  describe('descriptionHtml', () => {
    it('returns a truthy SafeHtml for markdown input', () => {
      (component as any).issue.description = '# Title\n**bold**';
      expect((component as any).descriptionHtml).toBeTruthy();
    });

    it('handles empty description', () => {
      (component as any).issue.description = '';
      expect((component as any).descriptionHtml).toBeTruthy();
    });
  });
});

describe('IssueDetail — new issue route', () => {
  let component: IssueDetail;
  let fixture: ComponentFixture<IssueDetail>;
  let store: IssuesStore;
  let router: Router;

  beforeEach(async () => {
    localStorage.clear();
    await TestBed.configureTestingModule({
      imports: [IssueDetail],
      providers: [
        provideRouter([]),
        {
          provide: ActivatedRoute,
          useValue: {
            snapshot: {
              routeConfig: { path: 'issues/new' },
              paramMap: convertToParamMap({}),
              queryParamMap: convertToParamMap({ draftId: '10' }),
            },
            paramMap: of(convertToParamMap({})),
          },
        },
      ],
    }).compileComponents();

    store = TestBed.inject(IssuesStore);
    router = TestBed.inject(Router);
    fixture = TestBed.createComponent(IssueDetail);
    component = fixture.componentInstance;
    await fixture.whenStable();
  });

  afterEach(() => {
    localStorage.clear();
  });

  it('should create', () => {
    expect(component).toBeTruthy();
  });

  it('isNewIssueRoute is true', () => {
    expect((component as any).isNewIssueRoute).toBe(true);
  });

  it('buildIssue creates an empty issue with draft id', () => {
    expect((component as any).issue.id).toBe(10);
    expect((component as any).issue.name).toBe('');
  });

  it('saveIssue without explicit flag does nothing for new route', () => {
    (component as any).issue.name = 'Draft Name';
    const countBefore = store.issues().length;
    (component as any).saveIssue(); // explicit = false
    expect(store.issues().length).toBe(countBefore);
  });

  it('saveIssue with explicit=true creates the issue and navigates', async () => {
    const spy = vi.spyOn(router, 'navigate').mockResolvedValue(true);
    (component as any).issue.name = 'Brand New Issue';
    (component as any).saveIssue(true);
    expect(store.issues().some((i) => i.name === 'Brand New Issue')).toBe(true);
    expect(spy).toHaveBeenCalledWith(['/issues', 10]);
  });
});