"use strict";
/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.addBodyClass = exports.getHtmlHeadTagElement = exports.appendHtmlElementToHead = void 0;
const schematics_1 = require("@angular-devkit/schematics");
const parse5_element_1 = require("./parse5-element");
const parse5_1 = require("parse5");
/** Appends the given element HTML fragment to the `<head>` element of the specified HTML file. */
function appendHtmlElementToHead(host, htmlFilePath, elementHtml) {
    const htmlFileBuffer = host.read(htmlFilePath);
    if (!htmlFileBuffer) {
        throw new schematics_1.SchematicsException(`Could not read file for path: ${htmlFilePath}`);
    }
    const htmlContent = htmlFileBuffer.toString();
    if (htmlContent.includes(elementHtml)) {
        return;
    }
    const headTag = getHtmlHeadTagElement(htmlContent);
    if (!headTag) {
        throw Error(`Could not find '<head>' element in HTML file: ${htmlFileBuffer}`);
    }
    // We always have access to the source code location here because the `getHeadTagElement`
    // function explicitly has the `sourceCodeLocationInfo` option enabled.
    const endTagOffset = headTag.sourceCodeLocation.endTag.startOffset;
    const indentationOffset = parse5_element_1.getChildElementIndentation(headTag);
    const insertion = `${' '.repeat(indentationOffset)}${elementHtml}`;
    const recordedChange = host
        .beginUpdate(htmlFilePath)
        .insertRight(endTagOffset, `${insertion}\n`);
    host.commitUpdate(recordedChange);
}
exports.appendHtmlElementToHead = appendHtmlElementToHead;
/** Parses the given HTML file and returns the head element if available. */
function getHtmlHeadTagElement(htmlContent) {
    return getElementByTagName('head', htmlContent);
}
exports.getHtmlHeadTagElement = getHtmlHeadTagElement;
/** Adds a class to the body of the document. */
function addBodyClass(host, htmlFilePath, className) {
    const htmlFileBuffer = host.read(htmlFilePath);
    if (!htmlFileBuffer) {
        throw new schematics_1.SchematicsException(`Could not read file for path: ${htmlFilePath}`);
    }
    const htmlContent = htmlFileBuffer.toString();
    const body = getElementByTagName('body', htmlContent);
    if (!body) {
        throw Error(`Could not find <body> element in HTML file: ${htmlFileBuffer}`);
    }
    const classAttribute = body.attrs.find(attribute => attribute.name === 'class');
    if (classAttribute) {
        const hasClass = classAttribute.value.split(' ').map(part => part.trim()).includes(className);
        if (!hasClass) {
            const classAttributeLocation = body.sourceCodeLocation.attrs.class;
            const recordedChange = host
                .beginUpdate(htmlFilePath)
                .insertRight(classAttributeLocation.endOffset - 1, ` ${className}`);
            host.commitUpdate(recordedChange);
        }
    }
    else {
        const recordedChange = host
            .beginUpdate(htmlFilePath)
            .insertRight(body.sourceCodeLocation.startTag.endOffset - 1, ` class="${className}"`);
        host.commitUpdate(recordedChange);
    }
}
exports.addBodyClass = addBodyClass;
/** Finds an element by its tag name. */
function getElementByTagName(tagName, htmlContent) {
    const document = parse5_1.parse(htmlContent, { sourceCodeLocationInfo: true });
    const nodeQueue = [...document.childNodes];
    while (nodeQueue.length) {
        const node = nodeQueue.shift();
        if (node.nodeName.toLowerCase() === tagName) {
            return node;
        }
        else if (node.childNodes) {
            nodeQueue.push(...node.childNodes);
        }
    }
    return null;
}
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {SchematicsException, Tree} from '@angular-devkit/schematics';\nimport {getChildElementIndentation} from './parse5-element';\nimport {DefaultTreeDocument, DefaultTreeElement, parse as parseHtml} from 'parse5';\n\n/** Appends the given element HTML fragment to the `<head>` element of the specified HTML file. */\nexport function appendHtmlElementToHead(host: Tree, htmlFilePath: string, elementHtml: string) {\n  const htmlFileBuffer = host.read(htmlFilePath);\n\n  if (!htmlFileBuffer) {\n    throw new SchematicsException(`Could not read file for path: ${htmlFilePath}`);\n  }\n\n  const htmlContent = htmlFileBuffer.toString();\n\n  if (htmlContent.includes(elementHtml)) {\n    return;\n  }\n\n  const headTag = getHtmlHeadTagElement(htmlContent);\n\n  if (!headTag) {\n    throw Error(`Could not find '<head>' element in HTML file: ${htmlFileBuffer}`);\n  }\n\n  // We always have access to the source code location here because the `getHeadTagElement`\n  // function explicitly has the `sourceCodeLocationInfo` option enabled.\n  const endTagOffset = headTag.sourceCodeLocation!.endTag.startOffset;\n  const indentationOffset = getChildElementIndentation(headTag);\n  const insertion = `${' '.repeat(indentationOffset)}${elementHtml}`;\n\n  const recordedChange = host\n    .beginUpdate(htmlFilePath)\n    .insertRight(endTagOffset, `${insertion}\\n`);\n\n  host.commitUpdate(recordedChange);\n}\n\n/** Parses the given HTML file and returns the head element if available. */\nexport function getHtmlHeadTagElement(htmlContent: string): DefaultTreeElement | null {\n  return getElementByTagName('head', htmlContent);\n}\n\n/** Adds a class to the body of the document. */\nexport function addBodyClass(host: Tree, htmlFilePath: string, className: string): void {\n  const htmlFileBuffer = host.read(htmlFilePath);\n\n  if (!htmlFileBuffer) {\n    throw new SchematicsException(`Could not read file for path: ${htmlFilePath}`);\n  }\n\n  const htmlContent = htmlFileBuffer.toString();\n  const body = getElementByTagName('body', htmlContent);\n\n  if (!body) {\n    throw Error(`Could not find <body> element in HTML file: ${htmlFileBuffer}`);\n  }\n\n  const classAttribute = body.attrs.find(attribute => attribute.name === 'class');\n\n  if (classAttribute) {\n    const hasClass = classAttribute.value.split(' ').map(part => part.trim()).includes(className);\n\n    if (!hasClass) {\n      const classAttributeLocation = body.sourceCodeLocation!.attrs.class;\n      const recordedChange = host\n        .beginUpdate(htmlFilePath)\n        .insertRight(classAttributeLocation.endOffset - 1, ` ${className}`);\n      host.commitUpdate(recordedChange);\n    }\n  } else {\n    const recordedChange = host\n      .beginUpdate(htmlFilePath)\n      .insertRight(body.sourceCodeLocation!.startTag.endOffset - 1, ` class=\"${className}\"`);\n    host.commitUpdate(recordedChange);\n  }\n}\n\n/** Finds an element by its tag name. */\nfunction getElementByTagName(tagName: string, htmlContent: string):\n  DefaultTreeElement | null {\n  const document = parseHtml(htmlContent, {sourceCodeLocationInfo: true}) as DefaultTreeDocument;\n  const nodeQueue = [...document.childNodes];\n\n  while (nodeQueue.length) {\n    const node = nodeQueue.shift() as DefaultTreeElement;\n\n    if (node.nodeName.toLowerCase() === tagName) {\n      return node;\n    } else if (node.childNodes) {\n      nodeQueue.push(...node.childNodes);\n    }\n  }\n\n  return null;\n}\n"]}