import { defineIntegration, addDts, addVirtualImports } from "astro-integration-kit";
import type { astroGistsUserConfig } from "./schemas/UserConfigSchema";
import { loadEnv } from "vite";
import { z } from "astro/zod";
import { gistLogger } from "./lib/integrationLogger";
import { fileFactory } from "./lib/file-factory";

// Load environment variables
const { GITHUB_PERSONAL_TOKEN } = loadEnv("all", process.cwd(), "GITHUB_");

// Check if there is a GitHub Personal Token
export const isThereAToken = () => {
    if (!GITHUB_PERSONAL_TOKEN) {
      return false;
    }
    return true;
  }
  
// Error message if the token is missing
export const TOKEN_MISSING_ERROR = "GITHUB_PERSONAL_TOKEN not found. Please add it to your .env file. Without it, you will be limited to 60 requests per hour.";
  
/** 
 * Astro-Gist - An Astro.js integration for embedding GitHub Gists in your Astro.js project.
*/
export default defineIntegration({
  name: "@matthiesenxyz/astro-gists",
  optionsSchema: z.custom<astroGistsUserConfig>().optional().default({ verbose: false }),
  setup({ 
	name,
	options,
	options: { verbose: isVerbose } 
}) {
	return {
	  "astro:config:setup": ( params ) => {

		const { logger } = params;

		// Create a logger for the setup events
		const configLogger = logger.fork("astro-gists : setup");
		const configDone = logger.fork("astro-gists : setup-done")

		gistLogger(configLogger, isVerbose, "info", "Setting up Astro Gists Integration.", false);

		gistLogger(configLogger, isVerbose, "warn", "Verbose logging is enabled.", true);

		// Check for GITHUB_PERSONAL_TOKEN
		if (!isThereAToken()) {
			gistLogger(configLogger, isVerbose, "error",TOKEN_MISSING_ERROR, false)
		}

		// Add virtual imports
		gistLogger(configLogger, isVerbose,  "info", "Adding virtual imports.", true);
		addVirtualImports(params, {
			name,
			imports: {
			"virtual:astro-gists/config": `export default ${JSON.stringify(options)}`,
			"astro-gists:components": `export * from "@matthiesenxyz/astro-gists/components";`
		}});

		// Add .d.ts file
		gistLogger(configLogger, isVerbose,  "info", "Injecting astro-gists.d.ts file.", true);

		const gistsDTS = fileFactory();

		gistsDTS.addLines(`
			declare module "astro-gists:components" {
				export * from "@matthiesenxyz/astro-gists/components";
			}
		`)

		addDts(params, {
			name: "astro-gists",
			content: gistsDTS.text()
		})

		// Log that the configuration is complete
		gistLogger(
			configDone, 
			isVerbose, 
			"info", 
			"Configuration for Astro Gists Integration is complete.", 
			false
		);
	  },
	}
  }
})