const { interpolateName, getOptions } = require('loader-utils');
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const urlSlug = require('url-slug');
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const SVGCompiler = require('svg-baker');
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const { NAMESPACE } = require('./config');
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const configure = require('./configurator');
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const Exceptions = require('./exceptions');
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let svgCompiler = new SVGCompiler();
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// eslint-disable-next-line consistent-return
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module.exports = function loader(content) {
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if (this.cacheable) {
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this.cacheable();
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}
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const done = this.async();
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const loaderContext = this;
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const { resourcePath, loaderIndex } = loaderContext;
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// webpack 1 compat
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const resourceQuery = loaderContext.resourceQuery || '';
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const compiler = loaderContext._compiler;
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const isChildCompiler = compiler.isChild();
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const parentCompiler = isChildCompiler ? compiler.parentCompilation.compiler : null;
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const matchedRules = getOptions(loaderContext);
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if (!content.includes('<svg')) {
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throw new Exceptions.InvalidSvg(content, matchedRules);
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}
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const configObj = { context: loaderContext };
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configObj.config = matchedRules;
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configObj.target = loaderContext.target;
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/**
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* @type {SVGSpriteLoaderConfig}
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*/
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const config = configure(configObj);
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if (config.extract) {
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const plugin = parentCompiler
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? parentCompiler.options.plugins.find(p => p.NAMESPACE && p.NAMESPACE === NAMESPACE)
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: this[NAMESPACE];
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if (typeof plugin === 'undefined') {
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throw new Exceptions.ExtractPluginMissingException();
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}
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if (loaderIndex > 0) {
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this.emitWarning(new Exceptions.RemainingLoadersInExtractModeException());
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}
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svgCompiler = plugin.svgCompiler;
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}
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let runtimeGenerator;
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try {
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runtimeGenerator = require(config.runtimeGenerator); // eslint-disable-line import/no-dynamic-require,global-require
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} catch (e) {
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throw new Exceptions.InvalidRuntimeException(e.message);
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}
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let id;
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if (typeof config.symbolId === 'function') {
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id = config.symbolId(resourcePath, resourceQuery);
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} else {
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const idPattern = config.symbolId + (resourceQuery ? `--${urlSlug(resourceQuery)}` : '');
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id = interpolateName(loaderContext, idPattern, {
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content,
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context: compiler.context,
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regExp: config.symbolRegExp
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});
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}
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svgCompiler.addSymbol({ id, content, path: resourcePath + resourceQuery })
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.then((symbol) => {
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const runtime = runtimeGenerator({ symbol, config, context: loaderContext.context, loaderContext });
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done(null, runtime);
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}).catch(done);
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};
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module.exports.NAMESPACE = NAMESPACE;
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