import {
  importErrorMessage,
  summarizeImportResult,
} from '../../frontend/src/app/features/admin/challenges/challenges.pure';

describe('Job 903: import error + result helpers', () => {
  it('summarizeImportResult reports imported/skipped/warning counts', () => {
    const r = {
      imported: 2,
      skipped: [{ name: 'X', reason: 'Unknown category: Y' }],
      warnings: ['1 skipped.'],
    };
    const out = summarizeImportResult(r as any);
    expect(out).toContain('Imported 2');
    expect(out).toContain('Skipped 1');
    expect(out).toContain('1 warning');
  });

  it('importErrorMessage prefers the nested error.message envelope', () => {
    expect(importErrorMessage({ error: { message: 'Server said no' } }, 'fallback')).toBe('Server said no');
  });

  it('importErrorMessage falls back to err.message', () => {
    expect(importErrorMessage({ message: 'boom' }, 'fallback')).toBe('boom');
  });

  it('importErrorMessage falls back to the supplied default when no message is available', () => {
    expect(importErrorMessage({}, 'fallback')).toBe('fallback');
    expect(importErrorMessage(null, 'fallback')).toBe('fallback');
  });
});

describe('Job 903: confirmed import handler contract', () => {
  function makeDoc() {
    return { format: 'hipctf-challenges', version: 1, exportedAt: '', challenges: [] };
  }

  it('a successful confirm yields a closed-modal state and a status banner', async () => {
    const state = {
      importOpen: true as boolean,
      importDoc: makeDoc() as any,
      importPreview: { total: 2, conflicts: [], unknownCategories: [], warnings: [] } as any,
      importResult: null as any,
      importError: null as string | null,
      importing: false,
      statusMessage: null as string | null,
    };

    // Simulate onImportConfirm body using pure helpers.
    try {
      const result = { imported: 2, skipped: [], warnings: [] };
      state.statusMessage = summarizeImportResult(result as any);
      await Promise.resolve();
      // Close-modal branch (the new behavior).
      state.importOpen = false;
      state.importDoc = null;
      state.importPreview = null;
      state.importResult = null;
      state.importError = null;
    } catch (err) {
      state.importError = importErrorMessage(err, 'Failed to import challenges');
    } finally {
      state.importing = false;
    }

    expect(state.importOpen).toBe(false);
    expect(state.importDoc).toBeNull();
    expect(state.importPreview).toBeNull();
    expect(state.importResult).toBeNull();
    expect(state.importError).toBeNull();
    expect(state.statusMessage).toContain('Imported 2');
    expect(state.importing).toBe(false);
  });

  it('a rejected confirm keeps the modal open and surfaces the error message', async () => {
    const state = {
      importOpen: true as boolean,
      importDoc: makeDoc() as any,
      importPreview: { total: 1, conflicts: [], unknownCategories: [], warnings: [] } as any,
      importResult: null as any,
      importError: null as string | null,
      importing: false,
      statusMessage: null as string | null,
    };

    try {
      throw { error: { message: 'Server said no' } };
    } catch (err) {
      state.importError = importErrorMessage(err, 'Failed to import challenges');
    } finally {
      state.importing = false;
    }

    expect(state.importOpen).toBe(true);
    expect(state.importError).toBe('Server said no');
    expect(state.importing).toBe(false);
  });
});