"use server";

import { PrismaClient } from "@prisma/client";
import { revalidatePath } from "next/cache";

const prisma = new PrismaClient();

export interface FileData {
    id: string;
    filename: string;
    mimetype: string;
    size: number;
    createdAt: Date;
    updatedAt: Date;
}

export async function getFiles(): Promise<FileData[]> {
    try {
        const files = await prisma.file.findMany({
            select: {
                id: true,
                filename: true,
                mimetype: true,
                size: true,
                createdAt: true,
                updatedAt: true,
            },
            orderBy: {
                createdAt: 'desc',
            },
        });

        return files;
    } catch (error) {
        console.error("Error listing files:", error);
        throw new Error("Failed to list files");
    } finally {
        await prisma.$disconnect();
    }
}

export async function downloadFile(id: string): Promise<{
    data: Uint8Array;
    filename: string;
    mimetype: string;
    size: number;
} | null> {
    try {
        const file = await prisma.file.findUnique({
            where: { id },
        });

        if (!file) {
            return null;
        }

        return {
            data: file.data,
            filename: file.filename,
            mimetype: file.mimetype,
            size: file.size,
        };
    } catch (error) {
        console.error("Error retrieving file:", error);
        throw new Error("Failed to retrieve file");
    } finally {
        await prisma.$disconnect();
    }
}

export async function deleteFile(id: string): Promise<boolean> {
    try {
        const file = await prisma.file.findUnique({
            where: { id },
        });

        if (!file) {
            return false;
        }

        await prisma.file.delete({
            where: { id },
        });

        revalidatePath('/files');
        revalidatePath('/dashboard');

        return true;
    } catch (error) {
        console.error("Error deleting file:", error);
        throw new Error("Failed to delete file");
    } finally {
        await prisma.$disconnect();
    }
}