/**
 * Copyright 2016-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @emails react-core
 */

'use strict';

describe('ReactNativeOperationHistoryDevtool', () => {
  var React;
  var ReactDebugTool;
  var ReactDOM;
  var ReactDOMComponentTree;
  var ReactDOMFeatureFlags;
  var ReactNativeOperationHistoryDevtool;

  beforeEach(() => {
    jest.resetModuleRegistry();

    React = require('React');
    ReactDebugTool = require('ReactDebugTool');
    ReactDOM = require('ReactDOM');
    ReactDOMComponentTree = require('ReactDOMComponentTree');
    ReactDOMFeatureFlags = require('ReactDOMFeatureFlags');
    ReactNativeOperationHistoryDevtool = require('ReactNativeOperationHistoryDevtool');

    ReactDebugTool.addDevtool(ReactNativeOperationHistoryDevtool);
  });

  afterEach(() => {
    ReactDebugTool.removeDevtool(ReactNativeOperationHistoryDevtool);
  });

  function assertHistoryMatches(expectedHistory) {
    var actualHistory = ReactNativeOperationHistoryDevtool.getHistory();
    expect(actualHistory).toEqual(expectedHistory);
  }

  describe('mount', () => {
    it('gets recorded for native roots', () => {
      var node = document.createElement('div');
      ReactDOM.render(<div><p>Hi.</p></div>, node);
      var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

      assertHistoryMatches([{
        instanceID: inst._debugID,
        type: 'mount',
        payload: ReactDOMFeatureFlags.useCreateElement ?
          'DIV' :
          '<div data-reactroot="" data-reactid="1"><p data-reactid="2">Hi.</p></div>',
      }]);
    });

    it('gets recorded for composite roots', () => {
      function Foo() {
        return <div><p>Hi.</p></div>;
      }
      var node = document.createElement('div');
      ReactDOM.render(<Foo />, node);
      var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);
      assertHistoryMatches([{
        instanceID: inst._debugID,
        type: 'mount',
        payload: ReactDOMFeatureFlags.useCreateElement ?
          'DIV' :
          '<div data-reactroot="" data-reactid="1">' +
          '<p data-reactid="2">Hi.</p></div>',
      }]);
    });

    it('gets recorded for composite roots that return null', () => {
      function Foo() {
        return null;
      }
      var node = document.createElement('div');
      ReactDOM.render(<Foo />, node);
      var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);
      assertHistoryMatches([{
        instanceID: inst._debugID,
        type: 'mount',
        payload: ReactDOMFeatureFlags.useCreateElement ?
          '#comment' :
          '<!-- react-empty: 1 -->',
      }]);
    });
  });

  describe('update styles', () => {
    it('gets recorded during mount', () => {
      var node = document.createElement('div');
      ReactDOM.render(<div style={{
        color: 'red',
        backgroundColor: 'yellow',
      }} />, node);
      var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

      if (ReactDOMFeatureFlags.useCreateElement) {
        assertHistoryMatches([{
          instanceID: inst._debugID,
          type: 'update styles',
          payload: {
            color: 'red',
            backgroundColor: 'yellow',
          },
        }, {
          instanceID: inst._debugID,
          type: 'mount',
          payload: 'DIV',
        }]);
      } else {
        assertHistoryMatches([{
          instanceID: inst._debugID,
          type: 'mount',
          payload: '<div style="color:red;background-color:yellow;" ' +
          'data-reactroot="" data-reactid="1"></div>',
        }]);
      }
    });

    it('gets recorded during an update', () => {
      var node = document.createElement('div');
      ReactDOM.render(<div />, node);
      var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

      ReactNativeOperationHistoryDevtool.clearHistory();
      ReactDOM.render(<div style={{ color: 'red' }} />, node);
      ReactDOM.render(<div style={{
        color: 'blue',
        backgroundColor: 'yellow',
      }} />, node);
      ReactDOM.render(<div style={{ backgroundColor: 'green' }} />, node);
      ReactDOM.render(<div />, node);

      assertHistoryMatches([{
        instanceID: inst._debugID,
        type: 'update styles',
        payload: { color: 'red' },
      }, {
        instanceID: inst._debugID,
        type: 'update styles',
        payload: { color: 'blue', backgroundColor: 'yellow' },
      }, {
        instanceID: inst._debugID,
        type: 'update styles',
        payload: { color: '', backgroundColor: 'green' },
      }, {
        instanceID: inst._debugID,
        type: 'update styles',
        payload: { backgroundColor: '' },
      }]);
    });

    it('gets ignored if the styles are shallowly equal', () => {
      var node = document.createElement('div');
      ReactDOM.render(<div />, node);
      var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

      ReactNativeOperationHistoryDevtool.clearHistory();
      ReactDOM.render(<div style={{
        color: 'red',
        backgroundColor: 'yellow',
      }} />, node);
      ReactDOM.render(<div style={{
        color: 'red',
        backgroundColor: 'yellow',
      }} />, node);

      assertHistoryMatches([{
        instanceID: inst._debugID,
        type: 'update styles',
        payload: {
          color: 'red',
          backgroundColor: 'yellow',
        },
      }]);
    });
  });

  describe('update attribute', () => {
    describe('simple attribute', () => {
      it('gets recorded during mount', () => {
        var node = document.createElement('div');
        ReactDOM.render(<div className="rad" tabIndex={42} />, node);
        var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

        if (ReactDOMFeatureFlags.useCreateElement) {
          assertHistoryMatches([{
            instanceID: inst._debugID,
            type: 'update attribute',
            payload: { className: 'rad' },
          }, {
            instanceID: inst._debugID,
            type: 'update attribute',
            payload: { tabIndex: 42 },
          }, {
            instanceID: inst._debugID,
            type: 'mount',
            payload: 'DIV',
          }]);
        } else {
          assertHistoryMatches([{
            instanceID: inst._debugID,
            type: 'mount',
            payload: '<div class="rad" tabindex="42" data-reactroot="" ' +
            'data-reactid="1"></div>',
          }]);
        }
      });

      it('gets recorded during an update', () => {
        var node = document.createElement('div');
        ReactDOM.render(<div />, node);
        var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

        ReactNativeOperationHistoryDevtool.clearHistory();
        ReactDOM.render(<div className="rad" />, node);
        ReactDOM.render(<div className="mad" tabIndex={42} />, node);
        ReactDOM.render(<div tabIndex={43} />, node);
        assertHistoryMatches([{
          instanceID: inst._debugID,
          type: 'update attribute',
          payload: { className: 'rad' },
        }, {
          instanceID: inst._debugID,
          type: 'update attribute',
          payload: { className: 'mad' },
        }, {
          instanceID: inst._debugID,
          type: 'update attribute',
          payload: { tabIndex: 42 },
        }, {
          instanceID: inst._debugID,
          type: 'remove attribute',
          payload: 'className',
        }, {
          instanceID: inst._debugID,
          type: 'update attribute',
          payload: { tabIndex: 43 },
        }]);
      });
    });

    describe('attribute that gets removed with certain values', () => {
      it('gets recorded as a removal during an update', () => {
        var node = document.createElement('div');
        ReactDOM.render(<div />, node);
        var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

        ReactNativeOperationHistoryDevtool.clearHistory();
        ReactDOM.render(<div disabled={true} />, node);
        ReactDOM.render(<div disabled={false} />, node);
        assertHistoryMatches([{
          instanceID: inst._debugID,
          type: 'update attribute',
          payload: { disabled: true },
        }, {
          instanceID: inst._debugID,
          type: 'remove attribute',
          payload: 'disabled',
        }]);
      });
    });

    describe('custom attribute', () => {
      it('gets recorded during mount', () => {
        var node = document.createElement('div');
        ReactDOM.render(<div data-x="rad" data-y={42} />, node);
        var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

        if (ReactDOMFeatureFlags.useCreateElement) {
          assertHistoryMatches([{
            instanceID: inst._debugID,
            type: 'update attribute',
            payload: { 'data-x': 'rad' },
          }, {
            instanceID: inst._debugID,
            type: 'update attribute',
            payload: { 'data-y': 42 },
          }, {
            instanceID: inst._debugID,
            type: 'mount',
            payload: 'DIV',
          }]);
        } else {
          assertHistoryMatches([{
            instanceID: inst._debugID,
            type: 'mount',
            payload: '<div data-x="rad" data-y="42" data-reactroot="" ' +
            'data-reactid="1"></div>',
          }]);
        }
      });

      it('gets recorded during an update', () => {
        var node = document.createElement('div');
        ReactDOM.render(<div />, node);
        var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

        ReactNativeOperationHistoryDevtool.clearHistory();
        ReactDOM.render(<div data-x="rad" />, node);
        ReactDOM.render(<div data-x="mad" data-y={42} />, node);
        ReactDOM.render(<div data-y={43} />, node);
        assertHistoryMatches([{
          instanceID: inst._debugID,
          type: 'update attribute',
          payload: { 'data-x': 'rad' },
        }, {
          instanceID: inst._debugID,
          type: 'update attribute',
          payload: { 'data-x': 'mad' },
        }, {
          instanceID: inst._debugID,
          type: 'update attribute',
          payload: { 'data-y': 42 },
        }, {
          instanceID: inst._debugID,
          type: 'remove attribute',
          payload: 'data-x',
        }, {
          instanceID: inst._debugID,
          type: 'update attribute',
          payload: { 'data-y': 43 },
        }]);
      });
    });

    describe('attribute on a web component', () => {
      it('gets recorded during mount', () => {
        var node = document.createElement('div');
        ReactDOM.render(<my-component className="rad" tabIndex={42} />, node);
        var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

        if (ReactDOMFeatureFlags.useCreateElement) {
          assertHistoryMatches([{
            instanceID: inst._debugID,
            type: 'update attribute',
            payload: { className: 'rad' },
          }, {
            instanceID: inst._debugID,
            type: 'update attribute',
            payload: { tabIndex: 42 },
          }, {
            instanceID: inst._debugID,
            type: 'mount',
            payload: 'MY-COMPONENT',
          }]);
        } else {
          assertHistoryMatches([{
            instanceID: inst._debugID,
            type: 'mount',
            payload: '<my-component className="rad" tabIndex="42" ' +
            'data-reactroot="" data-reactid="1"></my-component>',
          }]);
        }
      });

      it('gets recorded during an update', () => {
        var node = document.createElement('div');
        ReactDOM.render(<my-component />, node);
        var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

        ReactNativeOperationHistoryDevtool.clearHistory();
        ReactDOM.render(<my-component className="rad" />, node);
        ReactDOM.render(<my-component className="mad" tabIndex={42} />, node);
        ReactDOM.render(<my-component tabIndex={43} />, node);
        assertHistoryMatches([{
          instanceID: inst._debugID,
          type: 'update attribute',
          payload: { className: 'rad' },
        }, {
          instanceID: inst._debugID,
          type: 'update attribute',
          payload: { className: 'mad' },
        }, {
          instanceID: inst._debugID,
          type: 'update attribute',
          payload: { tabIndex: 42 },
        }, {
          instanceID: inst._debugID,
          type: 'remove attribute',
          payload: 'className',
        }, {
          instanceID: inst._debugID,
          type: 'update attribute',
          payload: { tabIndex: 43 },
        }]);
      });
    });
  });

  describe('replace text', () => {
    describe('text content', () => {
      it('gets recorded during an update from text content', () => {
        var node = document.createElement('div');
        ReactDOM.render(<div>Hi.</div>, node);
        var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

        ReactNativeOperationHistoryDevtool.clearHistory();
        ReactDOM.render(<div>Bye.</div>, node);
        assertHistoryMatches([{
          instanceID: inst._debugID,
          type: 'replace text',
          payload: 'Bye.',
        }]);
      });

      it('gets recorded during an update from html', () => {
        var node = document.createElement('div');
        ReactDOM.render(<div dangerouslySetInnerHTML={{__html: 'Hi.'}} />, node);
        var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

        ReactNativeOperationHistoryDevtool.clearHistory();
        ReactDOM.render(<div>Bye.</div>, node);
        assertHistoryMatches([{
          instanceID: inst._debugID,
          type: 'replace text',
          payload: 'Bye.',
        }]);
      });

      it('gets recorded during an update from children', () => {
        var node = document.createElement('div');
        ReactDOM.render(<div><span /><p /></div>, node);
        var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

        ReactNativeOperationHistoryDevtool.clearHistory();
        ReactDOM.render(<div>Bye.</div>, node);
        assertHistoryMatches([{
          instanceID: inst._debugID,
          type: 'remove child',
          payload: {fromIndex: 0},
        }, {
          instanceID: inst._debugID,
          type: 'remove child',
          payload: {fromIndex: 1},
        }, {
          instanceID: inst._debugID,
          type: 'replace text',
          payload: 'Bye.',
        }]);
      });

      it('gets ignored if new text is equal', () => {
        var node = document.createElement('div');
        ReactDOM.render(<div>Hi.</div>, node);

        ReactNativeOperationHistoryDevtool.clearHistory();
        ReactDOM.render(<div>Hi.</div>, node);
        assertHistoryMatches([]);
      });
    });

    describe('text node', () => {
      it('gets recorded during an update', () => {
        var node = document.createElement('div');
        ReactDOM.render(<div>{'Hi.'}{42}</div>, node);
        var inst1 = ReactDOMComponentTree.getInstanceFromNode(node.firstChild.childNodes[0]);
        var inst2 = ReactDOMComponentTree.getInstanceFromNode(node.firstChild.childNodes[3]);

        ReactNativeOperationHistoryDevtool.clearHistory();
        ReactDOM.render(<div>{'Bye.'}{43}</div>, node);
        assertHistoryMatches([{
          instanceID: inst1._debugID,
          type: 'replace text',
          payload: 'Bye.',
        }, {
          instanceID: inst2._debugID,
          type: 'replace text',
          payload: '43',
        }]);
      });

      it('gets ignored if new text is equal', () => {
        var node = document.createElement('div');
        ReactDOM.render(<div>{'Hi.'}{42}</div>, node);

        ReactNativeOperationHistoryDevtool.clearHistory();
        ReactDOM.render(<div>{'Hi.'}{42}</div>, node);
        assertHistoryMatches([]);
      });
    });
  });

  describe('replace with', () => {
    it('gets recorded when composite renders to a different type', () => {
      var element;
      function Foo() {
        return element;
      }

      var node = document.createElement('div');
      element = <div />;
      ReactDOM.render(<Foo />, node);
      var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

      ReactNativeOperationHistoryDevtool.clearHistory();
      element = <span />;
      ReactDOM.render(<Foo />, node);
      assertHistoryMatches([{
        instanceID: inst._debugID,
        type: 'replace with',
        payload: 'SPAN',
      }]);
    });

    it('gets ignored if the type has not changed', () => {
      var element;
      function Foo() {
        return element;
      }

      var node = document.createElement('div');
      element = <div />;
      ReactDOM.render(<Foo />, node);

      ReactNativeOperationHistoryDevtool.clearHistory();
      element = <div />;
      ReactDOM.render(<Foo />, node);
      assertHistoryMatches([]);
    });
  });

  describe('replace children', () => {
    it('gets recorded during an update from text content', () => {
      var node = document.createElement('div');
      ReactDOM.render(<div>Hi.</div>, node);
      var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

      ReactNativeOperationHistoryDevtool.clearHistory();
      ReactDOM.render(
        <div dangerouslySetInnerHTML={{__html: 'Bye.'}} />,
        node
      );
      assertHistoryMatches([{
        instanceID: inst._debugID,
        type: 'replace children',
        payload: 'Bye.',
      }]);
    });

    it('gets recorded during an update from html', () => {
      var node = document.createElement('div');
      ReactDOM.render(
        <div dangerouslySetInnerHTML={{__html: 'Hi.'}} />,
        node
      );
      var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

      ReactNativeOperationHistoryDevtool.clearHistory();
      ReactDOM.render(
        <div dangerouslySetInnerHTML={{__html: 'Bye.'}} />,
        node
      );
      assertHistoryMatches([{
        instanceID: inst._debugID,
        type: 'replace children',
        payload: 'Bye.',
      }]);
    });

    it('gets recorded during an update from children', () => {
      var node = document.createElement('div');
      ReactDOM.render(<div><span /><p /></div>, node);
      var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

      ReactNativeOperationHistoryDevtool.clearHistory();
      ReactDOM.render(
        <div dangerouslySetInnerHTML={{__html: 'Hi.'}} />,
        node
      );
      assertHistoryMatches([{
        instanceID: inst._debugID,
        type: 'remove child',
        payload: {fromIndex: 0},
      }, {
        instanceID: inst._debugID,
        type: 'remove child',
        payload: {fromIndex: 1},
      }, {
        instanceID: inst._debugID,
        type: 'replace children',
        payload: 'Hi.',
      }]);
    });

    it('gets ignored if new html is equal', () => {
      var node = document.createElement('div');
      ReactDOM.render(
        <div dangerouslySetInnerHTML={{__html: 'Hi.'}} />,
        node
      );

      ReactNativeOperationHistoryDevtool.clearHistory();
      ReactDOM.render(
        <div dangerouslySetInnerHTML={{__html: 'Hi.'}} />,
        node
      );
      assertHistoryMatches([]);
    });
  });

  describe('insert child', () => {
    it('gets reported when a child is inserted', () => {
      var node = document.createElement('div');
      ReactDOM.render(<div><span /></div>, node);
      var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

      ReactNativeOperationHistoryDevtool.clearHistory();
      ReactDOM.render(<div><span /><p /></div>, node);
      assertHistoryMatches([{
        instanceID: inst._debugID,
        type: 'insert child',
        payload: {toIndex: 1, content: 'P'},
      }]);
    });
  });

  describe('move child', () => {
    it('gets reported when a child is inserted', () => {
      var node = document.createElement('div');
      ReactDOM.render(<div><span key="a" /><p key="b" /></div>, node);
      var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

      ReactNativeOperationHistoryDevtool.clearHistory();
      ReactDOM.render(<div><p key="b" /><span key="a" /></div>, node);
      assertHistoryMatches([{
        instanceID: inst._debugID,
        type: 'move child',
        payload: {fromIndex: 0, toIndex: 1},
      }]);
    });
  });

  describe('remove child', () => {
    it('gets reported when a child is removed', () => {
      var node = document.createElement('div');
      ReactDOM.render(<div><span key="a" /><p key="b" /></div>, node);
      var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);

      ReactNativeOperationHistoryDevtool.clearHistory();
      ReactDOM.render(<div><span key="a" /></div>, node);
      assertHistoryMatches([{
        instanceID: inst._debugID,
        type: 'remove child',
        payload: {fromIndex: 1},
      }]);
    });
  });
});