const path = require('path');
const fs = require('fs');

module.exports = function () {
	return {
		name: 'slug-plugin',
		loadContent() {
			const experts = fs.readFileSync(
				path.join(
					__dirname,
					'../../../packages/promo-pages/src/components/experts/experts-data.tsx',
				),
				'utf-8',
			);
			const templates = fs.readFileSync(
				path.join(__dirname, '../../../packages/create-video/src/templates.ts'),
				'utf-8',
			);
			const expertSlugs = experts
				.split('\n')
				.map((a) => {
					return a.match(/slug:\s'(.*)'/)?.[1];
				})
				.filter(Boolean);

			const templateSlugs = templates
				.split('\n')
				.map((a) => {
					return a.match(/cliId:\s'(.*)'/)?.[1];
				})
				.filter(Boolean);

			const promptSubmissionsPath = path.join(
				__dirname,
				'../static/_raw/prompt-submissions.json',
			);
			const promptSubmissions = fs.existsSync(promptSubmissionsPath)
				? JSON.parse(fs.readFileSync(promptSubmissionsPath, 'utf-8'))
				: [];
			const promptSlugs = promptSubmissions.map((p) => p.slug);
			const promptPageCount = Math.ceil(promptSubmissions.length / 12);

			if (templateSlugs.length === 0) {
				throw new Error('expected templates');
			}

			if (expertSlugs.length === 0) {
				throw new Error('expected experts');
			}

			return {expertSlugs, templateSlugs, promptSlugs, promptPageCount};
		},
		contentLoaded({
			content: {expertSlugs, templateSlugs, promptSlugs, promptPageCount},
			actions,
		}) {
			expertSlugs.forEach((c) => {
				actions.addRoute({
					path: '/experts/' + c,
					component: '@site/src/components/ExpertPage.tsx',
					modules: {},
					exact: true,
				});
			});
			templateSlugs.forEach((c) => {
				actions.addRoute({
					path: '/templates/' + c,
					component: '@site/src/components/TemplatePage.tsx',
					modules: {},
					exact: true,
				});
			});
			promptSlugs.forEach((slug) => {
				actions.addRoute({
					path: '/prompts/' + slug,
					component: '@site/src/components/PromptPage.tsx',
					modules: {},
					exact: true,
				});
			});
			Array.from({length: promptPageCount - 1}, (_, i) => i + 2).forEach(
				(pageNum) => {
					actions.addRoute({
						path: '/prompts/' + pageNum,
						component: '@site/src/components/PromptsGalleryPage.tsx',
						modules: {},
						exact: true,
					});
				},
			);
		},
	};
};