/*!
 * @nuxt/generator v2.15.8 (c) 2016-2021
 * Released under the MIT License
 * Repository: https://github.com/nuxt/nuxt.js
 * Website: https://nuxtjs.org
*/
'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

const path = require('path');
const chalk = require('chalk');
const consola = require('consola');
const devalue = require('devalue');
const fsExtra = require('fs-extra');
const defu = require('defu');
const htmlMinifier = require('html-minifier');
const nodeHtmlParser = require('node-html-parser');
const ufo = require('ufo');
const utils = require('@nuxt/utils');

function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }

const path__default = /*#__PURE__*/_interopDefaultLegacy(path);
const chalk__default = /*#__PURE__*/_interopDefaultLegacy(chalk);
const consola__default = /*#__PURE__*/_interopDefaultLegacy(consola);
const devalue__default = /*#__PURE__*/_interopDefaultLegacy(devalue);
const fsExtra__default = /*#__PURE__*/_interopDefaultLegacy(fsExtra);
const defu__default = /*#__PURE__*/_interopDefaultLegacy(defu);
const htmlMinifier__default = /*#__PURE__*/_interopDefaultLegacy(htmlMinifier);

class Generator {
  constructor (nuxt, builder) {
    this.nuxt = nuxt;
    this.options = nuxt.options;
    this.builder = builder;

    // Set variables
    this.isFullStatic = utils.isFullStatic(this.options);
    if (this.isFullStatic) {
      consola__default['default'].info(`Full static generation activated`);
    }
    this.staticRoutes = path__default['default'].resolve(this.options.srcDir, this.options.dir.static);
    this.srcBuiltPath = path__default['default'].resolve(this.options.buildDir, 'dist', 'client');
    this.distPath = this.options.generate.dir;
    this.distNuxtPath = path__default['default'].join(
      this.distPath,
      utils.isUrl(this.options.build.publicPath) ? '' : this.options.build.publicPath
    );
    // Payloads for full static
    if (this.isFullStatic) {
      const { staticAssets, manifest } = this.options.generate;
      this.staticAssetsDir = path__default['default'].resolve(this.distNuxtPath, staticAssets.dir, staticAssets.version);
      this.staticAssetsBase = utils.urlJoin(this.options.app.cdnURL, this.options.generate.staticAssets.versionBase);
      if (manifest) {
        this.manifest = defu__default['default'](manifest, {
          routes: []
        });
      }
    }

    // Shared payload
    this._payload = null;
    this.setPayload = (payload) => {
      this._payload = defu__default['default'](payload, this._payload);
    };
  }

  async generate ({ build = true, init = true } = {}) {
    consola__default['default'].debug('Initializing generator...');
    await this.initiate({ build, init });

    consola__default['default'].debug('Preparing routes for generate...');
    const routes = await this.initRoutes();

    consola__default['default'].info('Generating pages' + (this.isFullStatic ? ' with full static mode' : ''));
    const errors = await this.generateRoutes(routes);

    await this.afterGenerate();

    // Save routes manifest for full static
    if (this.manifest) {
      await this.nuxt.callHook('generate:manifest', this.manifest, this);
      const manifestPath = path__default['default'].join(this.staticAssetsDir, 'manifest.js');
      await fsExtra__default['default'].ensureDir(this.staticAssetsDir);
      await fsExtra__default['default'].writeFile(manifestPath, `__NUXT_JSONP__("manifest.js", ${devalue__default['default'](this.manifest)})`, 'utf-8');
      consola__default['default'].success('Static manifest generated');
    }

    // Done hook
    await this.nuxt.callHook('generate:done', this, errors);
    await this.nuxt.callHook('export:done', this, { errors });

    return { errors }
  }

  async initiate ({ build = true, init = true } = {}) {
    // Wait for nuxt be ready
    await this.nuxt.ready();

    // Call before hook
    await this.nuxt.callHook('generate:before', this, this.options.generate);
    await this.nuxt.callHook('export:before', this);

    if (build) {
      // Add flag to set process.static
      this.builder.forGenerate();

      // Start build process
      await this.builder.build();
    } else {
      const hasBuilt = await fsExtra__default['default'].exists(path__default['default'].resolve(this.options.buildDir, 'dist', 'server', 'client.manifest.json'));
      if (!hasBuilt) {
        throw new Error(
          `No build files found in ${this.srcBuiltPath}.\nPlease run \`nuxt build\``
        )
      }
    }

    // Initialize dist directory
    if (init) {
      await this.initDist();
    }
  }

  async initRoutes (...args) {
    // Resolve config.generate.routes promises before generating the routes
    let generateRoutes = [];
    if (this.options.router.mode !== 'hash') {
      try {
        generateRoutes = await utils.promisifyRoute(
          this.options.generate.routes || [],
          ...args
        );
      } catch (e) {
        consola__default['default'].error('Could not resolve routes');
        throw e // eslint-disable-line no-unreachable
      }
    }
    let routes = [];
    // Generate only index.html for router.mode = 'hash' or client-side apps
    if (this.options.router.mode === 'hash') {
      routes = ['/'];
    } else {
      try {
        routes = utils.flatRoutes(this.getAppRoutes());
      } catch (err) {
        // Case: where we use custom router.js
        // https://github.com/nuxt-community/router-module/issues/83
        routes = ['/'];
      }
    }
    routes = routes.filter(route => this.shouldGenerateRoute(route));
    routes = this.decorateWithPayloads(routes, generateRoutes);

    // extendRoutes hook
    await this.nuxt.callHook('generate:extendRoutes', routes);
    await this.nuxt.callHook('export:extendRoutes', { routes });

    return routes
  }

  shouldGenerateRoute (route) {
    return this.options.generate.exclude.every((regex) => {
      if (typeof regex === 'string') {
        return regex !== route
      }
      return !regex.test(route)
    })
  }

  getBuildConfig () {
    try {
      return utils.requireModule(path__default['default'].join(this.options.buildDir, 'nuxt/config.json'))
    } catch (err) {
      return null
    }
  }

  getAppRoutes () {
    return utils.requireModule(path__default['default'].join(this.options.buildDir, 'routes.json'))
  }

  async generateRoutes (routes) {
    const errors = [];

    this.routes = [];
    this.generatedRoutes = new Set();

    routes.forEach(({ route, ...props }) => {
      route = decodeURI(this.normalizeSlash(route));
      this.routes.push({ route, ...props });
      // Add routes to the tracked generated routes (for crawler)
      this.generatedRoutes.add(route);
    });

    // Start generate process
    while (this.routes.length) {
      let n = 0;
      await Promise.all(
        this.routes
          .splice(0, this.options.generate.concurrency)
          .map(async ({ route, payload }) => {
            await utils.waitFor(n++ * this.options.generate.interval);
            await this.generateRoute({ route, payload, errors });
          })
      );
    }

    // Improve string representation for errors
    // TODO: Use consola for more consistency
    errors.toString = () => this._formatErrors(errors);

    return errors
  }

  _formatErrors (errors) {
    return errors
      .map(({ type, route, error }) => {
        const isHandled = type === 'handled';
        const color = isHandled ? 'yellow' : 'red';

        let line = chalk__default['default'][color](` ${route}\n\n`);

        if (isHandled) {
          line += chalk__default['default'].grey(JSON.stringify(error, undefined, 2) + '\n');
        } else {
          line += chalk__default['default'].grey(error.stack || error.message || `${error}`);
        }

        return line
      })
      .join('\n')
  }

  async afterGenerate () {
    const { fallback } = this.options.generate;

    // Disable SPA fallback if value isn't a non-empty string
    if (typeof fallback !== 'string' || !fallback) {
      return
    }

    const fallbackPath = path__default['default'].join(this.distPath, fallback);

    // Prevent conflicts
    if (await fsExtra__default['default'].exists(fallbackPath)) {
      consola__default['default'].warn(`SPA fallback was configured, but the configured path (${fallbackPath}) already exists.`);
      return
    }

    // Render and write the SPA template to the fallback path
    let { html } = await this.nuxt.server.renderRoute('/', {
      spa: true,
      staticAssetsBase: this.staticAssetsBase
    });

    try {
      html = this.minifyHtml(html);
    } catch (error) {
      consola__default['default'].warn('HTML minification failed for SPA fallback');
    }

    await fsExtra__default['default'].writeFile(fallbackPath, html, 'utf8');
    consola__default['default'].success('Client-side fallback created: `' + fallback + '`');
  }

  async initDist () {
    // Clean destination folder
    await fsExtra__default['default'].emptyDir(this.distPath);

    consola__default['default'].info(`Generating output directory: ${path__default['default'].basename(this.distPath)}/`);
    await this.nuxt.callHook('generate:distRemoved', this);
    await this.nuxt.callHook('export:distRemoved', this);

    // Copy static and built files
    if (await fsExtra__default['default'].exists(this.staticRoutes)) {
      await fsExtra__default['default'].copy(this.staticRoutes, this.distPath);
    }
    // Copy .nuxt/dist/client/ to dist/_nuxt/
    await fsExtra__default['default'].copy(this.srcBuiltPath, this.distNuxtPath);

    if (this.payloadDir) {
      await fsExtra__default['default'].ensureDir(this.payloadDir);
    }

    // Add .nojekyll file to let GitHub Pages add the _nuxt/ folder
    // https://help.github.com/articles/files-that-start-with-an-underscore-are-missing/
    const nojekyllPath = path__default['default'].resolve(this.distPath, '.nojekyll');
    await fsExtra__default['default'].writeFile(nojekyllPath, '');

    await this.nuxt.callHook('generate:distCopied', this);
    await this.nuxt.callHook('export:distCopied', this);
  }

  normalizeSlash (route) {
    return this.options.router && this.options.router.trailingSlash ? ufo.withTrailingSlash(route) : ufo.withoutTrailingSlash(route)
  }

  decorateWithPayloads (routes, generateRoutes) {
    const routeMap = {};
    // Fill routeMap for known routes
    routes.forEach((route) => {
      routeMap[route] = { route: this.normalizeSlash(route), payload: null };
    });
    // Fill routeMap with given generate.routes
    generateRoutes.forEach((route) => {
      // route is either a string or like { route : '/my_route/1', payload: {} }
      const path = utils.isString(route) ? route : route.route;
      routeMap[path] = {
        route: this.normalizeSlash(path),
        payload: route.payload || null
      };
    });
    return Object.values(routeMap)
  }

  async generateRoute ({ route, payload = {}, errors = [] }) {
    let html;
    const pageErrors = [];

    route = this.normalizeSlash(route);

    const setPayload = (_payload) => {
      payload = defu__default['default'](_payload, payload);
    };

    // Apply shared payload
    if (this._payload) {
      payload = defu__default['default'](payload, this._payload);
    }

    await this.nuxt.callHook('generate:route', { route, setPayload });
    await this.nuxt.callHook('export:route', { route, setPayload });

    try {
      const renderContext = {
        payload,
        staticAssetsBase: this.staticAssetsBase
      };
      const res = await this.nuxt.server.renderRoute(route, renderContext);
      html = res.html;

      // If crawler activated and called from generateRoutes()
      if (this.options.generate.crawler && this.options.render.ssr) {
        nodeHtmlParser.parse(html).querySelectorAll('a').map((el) => {
          const sanitizedHref = (el.getAttribute('href') || '')
            .replace(this.options.router.base, '/')
            .split('?')[0]
            .split('#')[0]
            .replace(/\/+$/, '')
            .trim();

          const foundRoute = decodeURI(this.normalizeSlash(sanitizedHref));

          if (foundRoute.startsWith('/') && !foundRoute.startsWith('//') && !path__default['default'].extname(foundRoute) && this.shouldGenerateRoute(foundRoute) && !this.generatedRoutes.has(foundRoute)) {
            this.generatedRoutes.add(foundRoute);
            this.routes.push({ route: foundRoute });
          }
          return null
        });
      }

      // Save Static Assets
      if (this.staticAssetsDir && renderContext.staticAssets) {
        for (const asset of renderContext.staticAssets) {
          const assetPath = path__default['default'].join(this.staticAssetsDir, decodeURI(asset.path));
          await fsExtra__default['default'].ensureDir(path__default['default'].dirname(assetPath));
          await fsExtra__default['default'].writeFile(assetPath, asset.src, 'utf-8');
        }
        // Add route to manifest (only if no error and redirect)
        if (this.manifest && (!res.error && !res.redirected)) {
          this.manifest.routes.push(ufo.withoutTrailingSlash(route));
        }
      }

      // SPA fallback
      if (res.error) {
        pageErrors.push({ type: 'handled', route, error: res.error });
      }
    } catch (err) {
      pageErrors.push({ type: 'unhandled', route, error: err });
      errors.push(...pageErrors);

      await this.nuxt.callHook('generate:routeFailed', { route, errors: pageErrors });
      await this.nuxt.callHook('export:routeFailed', { route, errors: pageErrors });
      consola__default['default'].error(this._formatErrors(pageErrors));

      return false
    }

    try {
      html = this.minifyHtml(html);
    } catch (err) {
      const minifyErr = new Error(
        `HTML minification failed. Make sure the route generates valid HTML. Failed HTML:\n ${html}`
      );
      pageErrors.push({ type: 'unhandled', route, error: minifyErr });
    }

    let fileName;

    if (this.options.generate.subFolders) {
      fileName = route === '/404'
        ? path__default['default'].join(path__default['default'].sep, '404.html') // /404 -> /404.html
        : path__default['default'].join(route, path__default['default'].sep, 'index.html'); // /about -> /about/index.html
    } else {
      const normalizedRoute = route.replace(/\/$/, '');
      fileName = route.length > 1 ? path__default['default'].join(path__default['default'].sep, normalizedRoute + '.html') : path__default['default'].join(path__default['default'].sep, 'index.html');
    }

    // Call hook to let user update the path & html
    const page = {
      route,
      path: fileName,
      html,
      exclude: false,
      errors: pageErrors
    };
    page.page = page; // Backward compatibility for export:page hook
    await this.nuxt.callHook('generate:page', page);

    if (page.exclude) {
      return false
    }
    page.path = path__default['default'].join(this.distPath, page.path);

    // Make sure the sub folders are created
    await fsExtra__default['default'].mkdirp(path__default['default'].dirname(page.path));
    await fsExtra__default['default'].writeFile(page.path, page.html, 'utf8');

    await this.nuxt.callHook('generate:routeCreated', { route, path: page.path, errors: pageErrors });
    await this.nuxt.callHook('export:routeCreated', { route, path: page.path, errors: pageErrors });

    if (pageErrors.length) {
      consola__default['default'].error(`Error generating route "${route}": ${pageErrors.map(e => e.error.message).join(', ')}`);
      errors.push(...pageErrors);
    } else {
      consola__default['default'].success(`Generated route "${route}"`);
    }

    return true
  }

  minifyHtml (html) {
    let minificationOptions = this.options.build.html.minify;

    // Legacy: Override minification options with generate.minify if present
    // TODO: Remove in Nuxt version 3
    if (typeof this.options.generate.minify !== 'undefined') {
      minificationOptions = this.options.generate.minify;
      consola__default['default'].warn('generate.minify has been deprecated and will be removed in the next major version.' +
        ' Use build.html.minify instead!');
    }

    if (!minificationOptions) {
      return html
    }

    return htmlMinifier__default['default'].minify(html, minificationOptions)
  }
}

function getGenerator (nuxt) {
  return new Generator(nuxt)
}

exports.Generator = Generator;
exports.getGenerator = getGenerator;