// import {NextResponse} from "next/server";
// import {isUuidv4} from "@/utils/verify-uuid";
// import {v4 as uuidv4} from "uuid";
// import * as drizzleDb from "@/db";
// import {db} from "@/db";
// import {Backup} from "@/db/schema/07_database";
// import {and, eq} from "drizzle-orm";
// import {withUpdatedAt} from "@/db/utils";
// import {decryptedDump, getFileExtension} from "./helpers";
// import {sendNotificationsBackupRestore} from "@/features/notifications/helpers";
// import {storeBackupFiles} from "@/features/storages/helpers";
// import {eventEmitter} from "@/features/shared/event";
//
// export async function POST(
//     request: Request,
//     {params}: { params: Promise<{ agentId: string }> }
// ) {
//     try {
//         const contentType = request.headers.get("Content-Type");
//
//         if (!contentType || !contentType.includes("multipart/form-data")) {
//             return NextResponse.json(
//                 {error: "Unsupported or missing Content-Type"},
//                 {status: 400}
//             );
//         }
//
//         eventEmitter.emit('modification', {update: true});
//
//         const agentId = (await params).agentId;
//         const formData = await request.formData();
//         const aesKeyHex = formData.get("aes_key") as string;
//         const ivHex = formData.get("iv") as string;
//         const generatedId = formData.get("generatedId") as string | null;
//         const method = formData.get("method") as string | null;
//
//
//         if (!generatedId || !isUuidv4(generatedId)) {
//             return NextResponse.json(
//                 {error: "generatedId is not a valid UUID"},
//                 {status: 400}
//             );
//         }
//
//         const agent = await db.query.agent.findFirst({
//             where: eq(drizzleDb.schemas.agent.id, agentId),
//         });
//
//         if (!agent) {
//             return NextResponse.json(
//                 {error: "Agent not found"},
//                 {status: 404}
//             );
//         }
//
//         const database = await db.query.database.findFirst({
//             where: eq(drizzleDb.schemas.database.agentDatabaseId, generatedId),
//             with: {
//                 project: true,
//                 alertPolicies: true,
//                 storagePolicies: true
//             }
//         });
//
//         if (!database) {
//             return NextResponse.json(
//                 {error: "Database associated with generatedId not found"},
//                 {status: 404}
//             );
//         }
//
//         let backup: Backup | null | undefined = null;
//
//         if (method === "automatic") {
//             [backup] = await db
//                 .insert(drizzleDb.schemas.backup)
//                 .values({
//                     status: 'ongoing',
//                     databaseId: database.id,
//                 })
//                 .returning();
//
//
//             if (!backup) {
//                 return NextResponse.json(
//                     {error: "Unable to create an automatic backup"},
//                     {status: 500}
//                 );
//             }
//         } else {
//             backup = await db.query.backup.findFirst({
//                 where: and(
//                     eq(drizzleDb.schemas.backup.status, 'ongoing'),
//                     eq(drizzleDb.schemas.backup.databaseId, database.id),
//                 ),
//             });
//
//
//             if (!backup) {
//                 return NextResponse.json(
//                     {error: "Unable to find the corresponding backup"},
//                     {status: 404}
//                 );
//             }
//         }
//
//         const status = formData.get("status") as string | null;
//
//         if (status === "success") {
//             const file = formData.get("file") as File | null;
//             const extension = formData.get("extension") as string | null;
//             if (!aesKeyHex || !ivHex) {
//                 return NextResponse.json({error: "Missing fields"}, {status: 400});
//             }
//
//
//             if (!file) {
//                 return NextResponse.json(
//                     {error: "File is required for successful backup"},
//                     {status: 400}
//                 );
//             }
//             const fileSizeBytes = file.size;
//             // const fileExtension = '.' + (file.name.split('.').pop()?.toLowerCase() || '');
//             const fileExtension = extension ? extension : getFileExtension(database.dbms)
//             const decryptedFile = await decryptedDump(file, aesKeyHex, ivHex, fileExtension);
//             const uuid = uuidv4();
//             const fileName = `${uuid}${fileExtension}`;
//             const buffer = Buffer.from(await decryptedFile.arrayBuffer());
//
//
//             const storageResults = await storeBackupFiles(backup, database, buffer, fileName)
//             eventEmitter.emit('modification', {update: true});
//
//             await sendNotificationsBackupRestore(database, "success_backup");
//
//             return NextResponse.json(
//                 {
//                     message: "Backup successfully uploaded",
//                 },
//                 {status: 200}
//             );
//         } else {
//
//             await db
//                 .update(drizzleDb.schemas.backup)
//                 .set(withUpdatedAt({status: 'failed'}))
//                 .where(eq(drizzleDb.schemas.backup.id, backup.id));
//
//             eventEmitter.emit('modification', {update: true});
//
//             await sendNotificationsBackupRestore(database, "error_backup");
//
//
//             return NextResponse.json(
//                 {
//                     message: "Backup successfully updated with status failed",
//                 },
//                 {status: 200}
//             );
//         }
//     } catch (error) {
//         console.error("Error in POST handler:", error);
//         return NextResponse.json(
//             {error: "Internal server error"},
//             {status: 500}
//         );
//     }
// }


import { NextResponse } from "next/server";
import { v4 as uuidv4 } from "uuid";
import { and, eq } from "drizzle-orm";
import * as drizzleDb from "@/db";
import { db } from "@/db";
import { isUuidv4 } from "@/utils/verify-uuid";
import uploadTempFileToProviders, { createDecryptionStream } from "@/features/api/upload/helpers/common";
import { getFileExtension, saveStreamToTempFile } from "@/features/api/upload/helpers/file";
import { Backup } from "@/db/schema/07_database";
import { withUpdatedAt } from "@/db/utils";
import { eventEmitter } from "@/features/shared/event";
import { sendNotificationsBackupRestore } from "@/features/notifications/helpers";
import {Readable} from "node:stream";

export async function POST(request: Request, { params }: { params: Promise<{ agentId: string }> }) {
    try {
        const agentId = (await params).agentId;
        const headers = request.headers;

        const generatedId = headers.get("x-generated-id");
        const status = headers.get("x-status");
        const encryptedAesKeyHex = headers.get("x-aes-key");
        const ivHex = headers.get("x-iv");
        const method = headers.get("x-method") ?? "manual";
        const extension = headers.get("x-extension");

        if (!agentId || !generatedId || !status || !encryptedAesKeyHex || !ivHex) {
            return NextResponse.json({ error: "Missing required headers/params" }, { status: 400 });
        }

        if (!isUuidv4(generatedId)) {
            return NextResponse.json({ error: "generatedId is not a valid UUID" }, { status: 400 });
        }

        const agent = await db.query.agent.findFirst({
            where: eq(drizzleDb.schemas.agent.id, agentId),
        });
        if (!agent) {
            return NextResponse.json({ error: "Agent not found" }, { status: 404 });
        }

        const database = await db.query.database.findFirst({
            where: eq(drizzleDb.schemas.database.agentDatabaseId, generatedId),
            with: { project: true, storagePolicies: true },
        });
        if (!database) {
            return NextResponse.json({ error: "Database not found" }, { status: 404 });
        }

        let backup: Backup | null | undefined = null;
        if (method === "automatic") {
            [backup] = await db
                .insert(drizzleDb.schemas.backup)
                .values({ status: "ongoing", databaseId: database.id })
                .returning();
        } else {
            backup = await db.query.backup.findFirst({
                where: and(
                    eq(drizzleDb.schemas.backup.databaseId, database.id),
                    eq(drizzleDb.schemas.backup.status, "ongoing")
                ),
            });
        }

        if (!backup) {
            return NextResponse.json({ error: "Backup not found" }, { status: 404 });
        }

        if (status === "success") {

            const decipher = createDecryptionStream(encryptedAesKeyHex, ivHex);
            const fileExt = extension || getFileExtension(database.dbms);
            const fileName = `${uuidv4()}${fileExt}`;

            // const nodeStream = webStreamToNode(request.body as any);

            // const tmpPath = await new Promise<string | null>((resolve, reject) => {
            //     pipeline(nodeStream, decipher, async (err) => {
            //         if (err) return reject(err);
            //         try {
            //             const path = await saveStreamToTempFile(decipher, fileName);
            //             resolve(path);
            //         } catch (e) {
            //             reject(e);
            //         }
            //     });
            // });

            const tmpPath = await saveStreamToTempFile(decipher, fileName);

            if (!tmpPath) {
                return NextResponse.json({ error: "Unable to save temporary backup file" }, { status: 500 });
            }

            uploadTempFileToProviders(backup, database, tmpPath, fileName);

            return NextResponse.json({ success: true });
        } else {
            await db
                .update(drizzleDb.schemas.backup)
                .set(withUpdatedAt({ status: "failed" }))
                .where(eq(drizzleDb.schemas.backup.id, backup.id));

            eventEmitter.emit("modification", { update: true });
            await sendNotificationsBackupRestore(database, "error_backup");

            return NextResponse.json({ message: "Backup updated with status failed" }, { status: 200 });
        }
    } catch (err: any) {
        console.error("Upload error:", err);
        return NextResponse.json({ error: "Upload failed", detail: err.message }, { status: 500 });
    }
}


function webStreamToNode(stream: ReadableStream<Uint8Array>) {
    return Readable.fromWeb(stream);
}