var createTestPackage = require('../../helpers/test-package');
var Dgeni = require('dgeni');

describe('autoLinkCode post-processor', () => {
  let processor, autoLinkCode, aliasMap, filterPipes, log;

  beforeEach(() => {
    const testPackage = createTestPackage('angular-base-package');
    const dgeni = new Dgeni([testPackage]);
    const injector = dgeni.configureInjector();
    autoLinkCode = injector.get('autoLinkCode');
    autoLinkCode.docTypes = ['class', 'pipe', 'function', 'const', 'member'];
    aliasMap = injector.get('aliasMap');
    processor = injector.get('postProcessHtml');
    processor.docTypes = ['test-doc'];
    processor.plugins = [autoLinkCode];
    filterPipes = injector.get('filterPipes');
    log = injector.get('log');
  });

  it('should insert an anchor into every code item that matches the id of an API doc', () => {
    aliasMap.addDoc({docType: 'class', id: 'MyClass', aliases: ['MyClass'], path: 'a/b/myclass'});
    const doc = {docType: 'test-doc', renderedContent: '<code>MyClass</code>'};
    processor.$process([doc]);
    expect(doc.renderedContent)
        .toEqual('<code><a href="a/b/myclass" class="code-anchor">MyClass</a></code>');
  });

  it('should insert an anchor into every code item that matches an alias of an API doc', () => {
    aliasMap.addDoc({
      docType: 'class',
      id: 'MyClass',
      aliases: ['MyClass', 'foo.MyClass'],
      path: 'a/b/myclass'
    });
    const doc = {docType: 'test-doc', renderedContent: '<code>foo.MyClass</code>'};
    processor.$process([doc]);
    expect(doc.renderedContent)
        .toEqual('<code><a href="a/b/myclass" class="code-anchor">foo.MyClass</a></code>');
  });

  it('should match code items within a block of code that contain a dot in their identifier',
     () => {
       aliasMap.addDoc({
         docType: 'member',
         id: 'MyEnum.Value',
         aliases: ['Value', 'MyEnum.Value'],
         path: 'a/b/myenum'
       });
       const doc = {docType: 'test-doc', renderedContent: '<code>someFn(): MyEnum.Value</code>'};
       processor.$process([doc]);
       expect(doc.renderedContent)
           .toEqual(
               '<code>someFn(): <a href="a/b/myenum" class="code-anchor">MyEnum.Value</a></code>');
     });

  it('should ignore code items that do not match a link to an API doc', () => {
    aliasMap.addDoc({docType: 'guide', id: 'MyClass', aliases: ['MyClass'], path: 'a/b/myclass'});
    const doc = {docType: 'test-doc', renderedContent: '<code>MyClass</code>'};
    processor.$process([doc]);
    expect(doc.renderedContent).toEqual('<code>MyClass</code>');
  });

  it('should ignore code items that are already inside a link', () => {
    aliasMap.addDoc({docType: 'class', id: 'MyClass', aliases: ['MyClass'], path: 'a/b/myclass'});
    const doc = {
      docType: 'test-doc',
      renderedContent: '<a href="..."><div><code>MyClass</code></div></a>'
    };
    processor.$process([doc]);
    expect(doc.renderedContent).toEqual('<a href="..."><div><code>MyClass</code></div></a>');
  });

  it('should ignore code items match an API doc but are not in the list of acceptable docTypes',
     () => {
       aliasMap.addDoc(
           {docType: 'directive', id: 'MyClass', aliases: ['MyClass'], path: 'a/b/myclass'});
       const doc = {docType: 'test-doc', renderedContent: '<code>MyClass</code>'};
       processor.$process([doc]);
       expect(doc.renderedContent).toEqual('<code>MyClass</code>');
     });

  it('should ignore code items that match an API doc but are attached to other text via a dash',
     () => {
       aliasMap.addDoc(
           {docType: 'class', id: 'MyClass', aliases: ['MyClass'], path: 'a/b/myclass'});
       const doc = {docType: 'test-doc', renderedContent: '<code>xyz-MyClass</code>'};
       processor.$process([doc]);
       expect(doc.renderedContent).toEqual('<code>xyz-MyClass</code>');
     });

  it('should ignore code items that are filtered out by custom filters (multiple words)', () => {
    autoLinkCode.customFilters = [filterPipes];
    aliasMap.addDoc({
      docType: 'pipe',
      id: 'MyClass',
      aliases: ['MyClass', 'myClass'],
      path: 'a/b/myclass',
      pipeOptions: {name: '\'myClass\''}
    });
    const doc = {
      docType: 'test-doc',
      renderedContent:
          '<code>{ xyz | myClass } { xyz|myClass } MyClass myClass OtherClass|MyClass</code>'
    };
    processor.$process([doc]);
    expect(doc.renderedContent)
        .toEqual(
            '<code>' +
            '{ xyz | <a href="a/b/myclass" class="code-anchor">myClass</a> } ' +
            '{ xyz|<a href="a/b/myclass" class="code-anchor">myClass</a> } ' +
            '<a href="a/b/myclass" class="code-anchor">MyClass</a> ' +
            'myClass ' +
            'OtherClass|<a href="a/b/myclass" class="code-anchor">MyClass</a>' +
            '</code>');
  });

  it('should ignore code items that are filtered out by custom filters (single word)', () => {
    const filterAnchors = (docs, words, index) => (words[index].toLowerCase() === 'a') ? [] : docs;
    autoLinkCode.customFilters = [filterAnchors];
    autoLinkCode.docTypes = ['directive'];

    aliasMap.addDoc({
      docType: 'directive',
      id: 'MyAnchorDirective',
      aliases: ['MyAnchorDirective', 'a'],
      path: 'a/b/my-anchor-directive',
    });
    const doc = {
      docType: 'test-doc',
      renderedContent: '<code>a</code>',
    };

    processor.$process([doc]);

    expect(doc.renderedContent).toBe('<code>a</code>');
  });

  it('should ignore generated nodes', () => {
    const filterAnchors = (docs, words, index) => (words[index].toLowerCase() === 'a') ? [] : docs;
    autoLinkCode.customFilters = [filterAnchors];
    autoLinkCode.docTypes = ['directive'];

    aliasMap.addDoc({
      docType: 'directive',
      id: 'MyAnchorDirective',
      aliases: ['MyAnchorDirective', 'a'],
      path: 'a/b/my-anchor-directive',
    });
    const doc = {
      docType: 'test-doc',
      renderedContent: '<code>&#x3C;a></code>',
    };

    processor.$process([doc]);

    expect(doc.renderedContent).toBe('<code>&#x3C;a></code>');
  });

  it('should ignore code items that match an internal API doc', () => {
    aliasMap.addDoc({
      docType: 'class',
      id: 'MyClass',
      aliases: ['MyClass'],
      path: 'a/b/myclass',
      internal: true
    });
    const doc = {docType: 'test-doc', renderedContent: '<code>MyClass</code>'};
    processor.$process([doc]);
    expect(doc.renderedContent).toEqual('<code>MyClass</code>');
  });

  it('should ignore documents when the `docType` is set to `member` and the keyword doesn\'t include `.`',
     () => {
       aliasMap.addDoc({docType: 'member', id: 'MyEnum', aliases: ['MyEnum'], path: 'a/b/c'});
       const doc = {docType: 'test-doc', renderedContent: '<code>MyEnum</code>'};
       processor.$process([doc]);
       expect(doc.renderedContent).toEqual('<code>MyEnum</code>');
     });

  it('should insert anchors for individual text nodes within a code block', () => {
    aliasMap.addDoc({docType: 'class', id: 'MyClass', aliases: ['MyClass'], path: 'a/b/myclass'});
    const doc = {
      docType: 'test-doc',
      renderedContent: '<code><span>MyClass</span><span>MyClass</span></code>'
    };
    processor.$process([doc]);
    expect(doc.renderedContent)
        .toEqual(
            '<code><span><a href="a/b/myclass" class="code-anchor">MyClass</a></span><span><a href="a/b/myclass" class="code-anchor">MyClass</a></span></code>');
  });

  it('should insert anchors for words that match within text nodes in a code block', () => {
    aliasMap.addDoc({docType: 'class', id: 'MyClass', aliases: ['MyClass'], path: 'a/b/myclass'});
    aliasMap.addDoc({docType: 'function', id: 'myFunc', aliases: ['myFunc'], path: 'ng/myfunc'});
    aliasMap.addDoc({docType: 'const', id: 'MY_CONST', aliases: ['MY_CONST'], path: 'ng/my_const'});
    const doc = {
      docType: 'test-doc',
      renderedContent: '<code>myFunc() {\n  return new MyClass(MY_CONST);\n}</code>'
    };
    processor.$process([doc]);
    expect(doc.renderedContent)
        .toEqual(
            '<code><a href="ng/myfunc" class="code-anchor">myFunc</a>() {\n  return new <a href="a/b/myclass" class="code-anchor">MyClass</a>(<a href="ng/my_const" class="code-anchor">MY_CONST</a>);\n}</code>');
  });

  it('should work with custom elements', () => {
    autoLinkCode.codeElements = ['code-example'];
    aliasMap.addDoc({docType: 'class', id: 'MyClass', aliases: ['MyClass'], path: 'a/b/myclass'});
    const doc = {docType: 'test-doc', renderedContent: '<code-example>MyClass</code-example>'};
    processor.$process([doc]);
    expect(doc.renderedContent)
        .toEqual(
            '<code-example><a href="a/b/myclass" class="code-anchor">MyClass</a></code-example>');
  });

  it('should ignore code blocks that are marked with a `no-auto-link` class', () => {
    aliasMap.addDoc({docType: 'class', id: 'MyClass', aliases: ['MyClass'], path: 'a/b/myclass'});
    const doc = {docType: 'test-doc', renderedContent: '<code class="no-auto-link">MyClass</code>'};
    processor.$process([doc]);
    expect(doc.renderedContent).toEqual('<code class="no-auto-link">MyClass</code>');
  });

  it('should ignore code blocks that are marked with an "ignored" language', () => {
    aliasMap.addDoc({docType: 'class', id: 'MyClass', aliases: ['MyClass'], path: 'a/b/myclass'});
    const doc = {docType: 'test-doc', renderedContent: '<code language="bash">MyClass</code>'};
    processor.$process([doc]);
    expect(doc.renderedContent).toEqual('<code language="bash">MyClass</code>');
  });

  it('should record a warning if the autolinked doc has no `path` and `failOnMissingDocPath` is false',
     () => {
       aliasMap.addDoc({docType: 'class', id: 'MyClass', aliases: ['MyClass']});
       const doc = {docType: 'test-doc', renderedContent: '<code>MyClass</code>'};
       autoLinkCode.failOnMissingDocPath = false;
       processor.$process([doc]);

       expect(log.warn).toHaveBeenCalledWith(`
      autoLinkCode: Doc path is empty for "MyClass" - link will not be generated for "MyClass".
      Please make sure if the doc should be public. If not, it should probably not be referenced in the docs. - doc (test-doc) `);
     });

  it('should fail if the autolinked doc has no `path` and `failOnMissingDocPath` is true', () => {
    aliasMap.addDoc({docType: 'class', id: 'MyClass', aliases: ['MyClass']});
    const doc = {docType: 'test-doc', renderedContent: '<code>MyClass</code>'};
    autoLinkCode.failOnMissingDocPath = true;
    expect(() => processor.$process([doc])).toThrowError(`
      autoLinkCode: Doc path is empty for "MyClass" - link will not be generated for "MyClass".
      Please make sure if the doc should be public. If not, it should probably not be referenced in the docs. - doc (test-doc) `);
  });
});