// This is Free Software under GNU Affero General Public License v >= 3.0
// without warranty, see README.md and license for details.
//
// SPDX-License-Identifier: AGPL-3.0-or-later
// License-Filename: LICENSES/AGPL-3.0.txt
//
// Copyright (C) 2018 by via donau
//   – Österreichische Wasserstraßen-Gesellschaft mbH
// Software engineering by Intevation GmbH
//
// Author(s):
//  * Sascha L. Teichmann <sascha.teichmann@intevation.de>

package controllers

import (
	"log"
	"net/http"
	"time"

	"gemma.intevation.de/gemma/pkg/auth"
	"gemma.intevation.de/gemma/pkg/common"
	"gemma.intevation.de/gemma/pkg/imports"
	"gemma.intevation.de/gemma/pkg/misc"
)

const (
	maxUploadedGaugeMeasurementSize = 25 * 1024 * 1024
	uploadedGaugeMeasurementName    = "ugm"
)

func importUploadedGaugeMeasurement(rw http.ResponseWriter, req *http.Request) {

	dir, err := misc.StoreUploadedFile(
		req,
		uploadedGaugeMeasurementName,
		"data.xml",
		maxUploadedGaugeMeasurementSize)
	if err != nil {
		log.Printf("error: %v\n", err)
		http.Error(rw, "error: "+err.Error(), http.StatusInternalServerError)
		return
	}

	ugm := &imports.UploadedGaugeMeasurement{Dir: dir}

	serialized, err := common.ToJSONString(ugm)
	if err != nil {
		log.Printf("error: %v\n", err)
		http.Error(rw, "error: "+err.Error(), http.StatusInternalServerError)
		return
	}

	session, _ := auth.GetSession(req)

	sendEmail := req.FormValue("email") != ""

	jobID, err := imports.AddJob(
		imports.UGMJobKind,
		time.Time{}, // due
		nil,         // trys
		nil,         // wait retry
		session.User,
		sendEmail,
		serialized)

	if err != nil {
		log.Printf("error: %v\n", err)
		http.Error(rw, "error: "+err.Error(), http.StatusInternalServerError)
		return
	}

	log.Printf("info: added import #%d to queue\n", jobID)

	result := struct {
		ID int64 `json:"id"`
	}{
		ID: jobID,
	}
	SendJSON(rw, http.StatusCreated, &result)
}