import { NextRequest, NextResponse } from "next/server";
import { readFile } from "fs/promises";
import { join } from "path";
import { existsSync } from "fs";
import { SAVE_CONFIG } from "@/lib/saveConfig";

export async function GET(request: NextRequest) {
	try {
		const { searchParams } = new URL(request.url);
		const name = searchParams.get("name");

		if (!name) {
			return NextResponse.json(
				{ error: "Script name is required" },
				{ status: 400 }
			);
		}

		// Validate filename (same validation as save)
		if (!SAVE_CONFIG.FILENAME_REGEX.test(name)) {
			return NextResponse.json(
				{ error: "Invalid script name" },
				{ status: 400 }
			);
		}

		const saveDir = SAVE_CONFIG.SAVE_DIRECTORY;
		const filename = `${name}.rhai`;
		const filepath = join(saveDir, filename);

		// Check if file exists
		if (!existsSync(filepath)) {
			return NextResponse.json(
				{ error: `Script "${name}" not found` },
				{ status: 404 }
			);
		}

		// Read and return file content
		const content = await readFile(filepath, "utf8");

		return NextResponse.json({
			name,
			filename,
			content,
		});
	} catch (error) {
		console.error("Get script error:", error);
		return NextResponse.json(
			{ error: "Failed to read script" },
			{ status: 500 }
		);
	}
}