import type {
	StarlightPlugin,
	StarlightUserConfig,
} from "@astrojs/starlight/types";
import type { AstroIntegrationLogger } from "astro";
import { vitePluginStarlightGhostConfig } from "./src/integrations/vite";
import {
	type StarlightGhostConfig,
	validateConfig,
} from "./src/schemas/config";
import { facebook, getSettings, invariant, twitter } from "./src/utils/api";

const settings = await getSettings();

export type { StarlightGhostConfig };

export default function starlightGhostCMS(
	userConfig?: StarlightGhostConfig,
): StarlightPlugin {
	const config: StarlightGhostConfig = validateConfig(userConfig);
	invariant(settings, "Settings not available... check your api key/url");

	return {
		name: "@matthiesenxyz/starlight-ghostcms-plugin",
		hooks: {
			setup({
				astroConfig,
				addIntegration,
				config: starlightConfig,
				logger,
				updateConfig: updateStarlightConfig,
			}) {
				// Update the Starlight config with the GhostCMS config
				updateStarlightConfig({
					social: {
						...starlightConfig.social,
						rss: `${astroConfig.site}/rss.xml`,
						twitter: twitter(settings.twitter ? settings.twitter : ""),
						facebook: facebook(settings.facebook ? settings.facebook : ""),
					},
					components: {
						...starlightConfig.components,
						...overrideStarlightComponent(
							starlightConfig.components,
							logger,
							"MarkdownContent",
						),
						...overrideStarlightComponent(
							starlightConfig.components,
							logger,
							"Sidebar",
						),
						...overrideStarlightComponent(
							starlightConfig.components,
							logger,
							"SiteTitle",
						),
					},
				});

				// Add the Starlight-GhostCMS integration
				addIntegration({
					name: "@matthiesenxyz/starlight-ghostcms",
					hooks: {
						"astro:config:setup": ({ injectRoute, updateConfig }) => {

							updateConfig({
								vite: {
									plugins: [vitePluginStarlightGhostConfig(config)],
								},
							});

							const makeRoute = (endpoint: string, entrypoint: string) => {
								injectRoute({
									pattern: `/${endpoint}`,
									entrypoint: `@matthiesenxyz/starlight-ghostcms/routes/${entrypoint}`,
									prerender: true,
								});
							};

							makeRoute("blog", "index.astro");
							makeRoute("blog/[slug]", "[slug].astro");
							makeRoute("blog/about", "about.astro");
							makeRoute("blog/authors", "authors.astro");
							makeRoute("rss.xml", "rss.xml.ts");

						},
					},
				});
				
			},
		},
	};
}

function overrideStarlightComponent(
	components: StarlightUserConfig["components"],
	logger: AstroIntegrationLogger,
	component: keyof NonNullable<StarlightUserConfig["components"]>,
) {
	if (components?.[component]) {
		logger.warn(
			`It looks like you already have a \`${component}\` component override in your Starlight configuration.`,
		);
		logger.warn(
			`To use \`starlight-ghostcms\`, remove the override for the \`${component}\` component.\n`,
		);
		logger.warn("This Warning can be ignored if you know what your doing ;)");

		return {};
	}

	return {
		[component]: `@matthiesenxyz/starlight-ghostcms/overrides/${component}.astro`,
	};
}