import { FastifyInstance } from "fastify";
import jwt from "jsonwebtoken";
import {insertHistoryItem} from "../utils/history";
import {buildExportZip} from "../utils/export/datev";
import {s3} from "../utils/s3";
import {GetObjectCommand, PutObjectCommand} from "@aws-sdk/client-s3"
import {getSignedUrl} from "@aws-sdk/s3-request-presigner";
import dayjs from "dayjs";
import {randomUUID} from "node:crypto";
import {secrets} from "../utils/secrets";

const createExport = async (server:FastifyInstance,req:any,startDate,endDate,beraternr,mandantennr) => {
    console.log(startDate,endDate,beraternr,mandantennr)

    // 1) ZIP erzeugen
    const buffer = await buildExportZip(server,req.user.tenant_id, startDate, endDate, beraternr, mandantennr)
    console.log("ZIP created")

    // 2) Dateiname & Key festlegen
    const fileKey = `${req.user.tenant_id}/exports/Export_${dayjs(startDate).format("YYYY-MM-DD")}_${dayjs(endDate).format("YYYY-MM-DD")}_${randomUUID()}.zip`
    console.log(fileKey)

    // 3) In S3 hochladen
    await s3.send(
        new PutObjectCommand({
            Bucket: secrets.S3_BUCKET,
            Key: fileKey,
            Body: buffer,
            ContentType: "application/zip",
        })
    )

    // 4) Presigned URL erzeugen (24h gültig)
    const url = await getSignedUrl(
        s3,
        new GetObjectCommand({
            Bucket: secrets.S3_BUCKET,
            Key: fileKey,
        }),
        { expiresIn: 60 * 60 * 24 }
    )

    console.log(url)

    // 5) In Supabase-DB speichern
    const { data, error } = await server.supabase
        .from("exports")
        .insert([
            {
                tenant_id: req.user.tenant_id,
                start_date: startDate,
                end_date: endDate,
                valid_until: dayjs().add(24,"hours").toISOString(),
                file_path: fileKey,
                url: url,
                created_at: new Date().toISOString(),
            },
        ])
        .select()
        .single()

    console.log(data)
    console.log(error)
}


export default async function exportRoutes(server: FastifyInstance) {
    //Export DATEV
    server.post("/exports/datev", async (req, reply) => {
        const { start_date, end_date, beraternr, mandantennr } = req.body as {
            start_date: string
            end_date: string
            beraternr: string
            mandantennr: string
        }



        reply.send({success:true})

        setImmediate(async () => {
            try {
                await createExport(server,req,start_date,end_date,beraternr,mandantennr)
                console.log("Job done ✅")
            } catch (err) {
                console.error("Job failed ❌", err)
            }
        })

    })

    //List Exports Available for Download

    server.get("/exports", async (req,reply) => {
        const {data,error} = await server.supabase.from("exports").select().eq("tenant_id",req.user.tenant_id)

        console.log(data,error)
        reply.send(data)

    })





}