diff --git a/.gitignore b/.gitignore
index 0e72f66..78745ad 100644
--- a/.gitignore
+++ b/.gitignore
@@ -33,3 +33,5 @@ pdfgen/*
 !pdfgen/template*.tex
 
 documents/*
+user-data/*
+tmp-user-data/*
diff --git a/src/lib/server/database.ts b/src/lib/server/database.ts
index 1417e59..8201e69 100644
--- a/src/lib/server/database.ts
+++ b/src/lib/server/database.ts
@@ -1,10 +1,10 @@
-import { mkdir } from "node:fs/promises";
+import fs from "node:fs/promises";
 import { Database, SQLiteError } from "bun:sqlite";
 
 import { UserEntry, RecordEntry, EstimatesEntry } from "$lib/db_types";
 import { calculateDuration, parseDate, toInt, isTimeValidHHMM } from "$lib/util";
 
-const DATABASES_PATH: string = "./databases/";
+const DATABASES_PATH: string = (process.env.APP_USER_DATA_PATH ?? ".") + "/databases/";
 const USER_DATABASE_PATH: string = DATABASES_PATH + "users.sqlite";
 
 const CHECK_QUERY: string = 
@@ -291,7 +291,7 @@ function is_db_initialized(db: Database): boolean {
 			throw exception;
 		}
 
-		console.log(e);
+		console.log(exception);
 
 		return false;
 	}
@@ -305,8 +305,10 @@ function setup_db(db: Database, setup_queries: string[]) {
    setup_queries.forEach((q) => { /*console.log(q);*/ db.query(q).run(); });
 }
 
-export function init_db() {
+export async function init_db() {
 
+	const stdout = await fs.mkdir(DATABASES_PATH, { recursive: true });
+	console.log(stdout)
 	user_database = new Database(USER_DATABASE_PATH, { strict: true, create: true });
 
 	if (!is_db_initialized(user_database)) {	
@@ -366,6 +368,8 @@ export function get_user(): User | null {
 	const db_name = get_user_db_name(user);
 
 	try {
+
+		fs.mkdir(DATABASES_PATH, { recursive: true });
 		
 		let userdb = new Database(db_name, { create: true, strict: true });
 
diff --git a/src/lib/server/docstore.ts b/src/lib/server/docstore.ts
index 68864d5..e8c8644 100644
--- a/src/lib/server/docstore.ts
+++ b/src/lib/server/docstore.ts
@@ -1,21 +1,25 @@
 import b from "bun";
 import fs from "node:fs/promises"
 
-import type { RecordEntry } from "$lib/db_types";
 import { User } from "$lib/server/database";
 import { MONTHS, toInt, padInt, parseDate, calculateDuration, isoToLocalDate, month_of, weekday_of } from "$lib/util"
 
 
 export class UserBusyException extends Error {
-  constructor(message, userid) {
-    super(`user (id: ${userid}) is busy: ${message}`);
-    this.name = this.constructor.name;
-	this.userid = userid;
-  }
+	userid: number
+
+	constructor(message: string, userid: number) {
+		super(`user (id: ${userid}) is busy: ${message}`);
+		this.name = this.constructor.name;
+		this.userid = userid;
+	}
 }
 
 export class LatexException extends Error {
-	constructor(message, userid, errno, stdout) {
+	errno: number
+	stdout: string
+
+	constructor(message: string, userid: number, errno: number, stdout: string) {
 		super(message + ` (userid: ${userid}, errno: ${errno})\n${stdout}`);
 		this.name = this.constructor.name;
 		this.errno = errno;
@@ -24,107 +28,129 @@ export class LatexException extends Error {
 }
 
 export class FileExistsException extends Error {
-	constructor(path) {
+	path: string
+
+	constructor(path: string) {
 		super("File already exists: " + path);
 		this.name = this.constructor.name;
 		this.path = path;
 	}
 }
 
+export interface FileProperties {
+	identifier: string
+	path: string
+	name: string
+	cdate: Date
+}
 
-const DOCUMENTS_PATH: string = "./documents"
+
+const DOCUMENTS_PATH: string = (process.env.APP_USER_DATA_PATH ?? ".") + "/documents"
 const ESTIMATES_FOLD: string = "estimates"
 const RECORDS_FOLD: string = "records"
 
-const GENERATION_PATH: string = "./pdfgen";
+const GENERATION_PATH: string = (process.env.APP_TMP_USER_DATA_PATH ?? ".") + "/pdfgen";
 
 const TEMPLATE_REC = "template-rec.tex";
-const TEMPLATE_REC_PATH = `${GENERATION_PATH}/${TEMPLATE_REC}`;
+const TEMPLATE_REC_PATH = `./templates/${TEMPLATE_REC}`;
 
 const TEMPLATE_EST = "template-est.tex";
-const TEMPLATE_EST_PATH = `${GENERATION_PATH}/${TEMPLATE_EST}`;
+const TEMPLATE_EST_PATH = `./templates/${TEMPLATE_EST}`;
 
-const SALUTATION = {
+const SALUTATION: Record<string, string> = {
 	m: "Herrn",
 	w: "Frau"
 }
 
-const GENDER_END = {
+const GENDER_END: Record<string, string> = {
 	m: "",
 	w: "in",
 }
 
+/*
+
+const SALUTATION: Map<string, string> = new Map(Object.entries({
+	m: "Herrn",
+	w: "Frau"
+}))
+
+const GENDER_END: Map<string, string> = new Map(Object.entries({
+	"m": "",
+	"w": "in",
+}))
+*/
 
 // this may be a race condition???
 // is a mutex needed in JS?
-let locked_users: number[] = new Set();
+let locked_users: Set<Number> = new Set();
 
 export async function getAllFiles(user: User) {
 	const path = `${DOCUMENTS_PATH}/user-${user.id}`;
 
-	let file_names = (await fs.readdir(path, { recursive: true }).catch((err) => {
+	let file_names = (await fs.readdir(path, { recursive: true }).catch((_) => {
 		return [];
 	})).filter((v) => {
 		return !(v == ESTIMATES_FOLD || v == RECORDS_FOLD);
 	});
 	
-	let files = (await Promise.all(file_names.map(async (v) => {
+	let files: FileProperties[] = (await Promise.all(file_names.map(async (v) => {
 		return {
+			identifier: v.split("/").pop(),
 			path: v,
 			name: v.split("/").pop(),
-			timestamp: (await fs.stat(`${path}/${v}`)).mtime
-		}
+			cdate: (await fs.stat(`${path}/${v}`)).ctime
+		} as FileProperties;
 	}))).sort((a, b) => {
-		return a.timestamp - b.timestamp
+		return a.cdate.getTime() - b.cdate.getTime()
 	});
 
 	return files;
 }
 
-export async function getRecordFiles(user: User) {
+export async function getRecordFiles(user: User): Promise<FileProperties[]> {
 	const path = `${DOCUMENTS_PATH}/user-${user.id}/${RECORDS_FOLD}`;
 
 	let file_names = await fs.readdir(path).catch((err) => { console.log(err); return [] });
 
-	let files = await Promise.all(file_names.map(async (v) => {
+	let files: FileProperties[] = await Promise.all(file_names.map(async (v) => {
 		return {
 			identifier: v.replace(/^Stundenliste-/, "").replace(/\.pdf$/, ""),
-			filename: v,
+			name: v,
 			path: `${RECORDS_FOLD}/${v}`,
 			cdate: (await fs.stat(`${path}/${v}`)).ctime,
-		}
+		} as FileProperties;
 	}))
 
 	return files;
 }
 
-export async function getEstimateFiles(user: User) {
+export async function getEstimateFiles(user: User): Promise<FileProperties[]> {
 	const path = `${DOCUMENTS_PATH}/user-${user.id}/${ESTIMATES_FOLD}`;
 
 	let file_names = await fs.readdir(path).catch((err) => { console.log(err); return [] });
 
-	let files = await Promise.all(file_names.map(async (v) => {
+	let files: FileProperties[] = await Promise.all(file_names.map(async (v) => {
 		return {
-			identifier: v.match(/\d.Quartal_\d\d\d\d/)[0].replace(/.Quartal_/, ".").split(".").reverse().join("-"),
-			filename: v,
+			identifier: v.match(/\d.Quartal_\d\d\d\d/)?.[0].replace(/.Quartal_/, ".").split(".").reverse().join("-") ?? "",
+			name: v,
 			path: `${ESTIMATES_FOLD}/${v}`,
 			cdate: (await fs.stat(`${path}/${v}`)).ctime,
-		}
+		} as FileProperties;
 	}))
 
 	return files;
 }
 
-export async function getFile(user: User, filename: string) {	
+export async function getFile(user: User, filename: string): Promise<Uint8Array> {	
 	const path = `${DOCUMENTS_PATH}/user-${user.id}`;
 
 	let file = Bun.file(`${path}/${filename}`)
 
 	if (!await file.exists()) {
-		return null;
+		return new Promise(_ => null);
 	}
 
-	return await file.bytes();
+	return file.bytes();
 }
 
 export async function generateEstimatePDF(user: User, year: number, quarter: number) {
@@ -134,10 +160,10 @@ export async function generateRecordPDF(user: User, year: number, quarter: numbe
 	return await _runProtocted(_generateRecordPDF, user, year, quarter);
 }
 
-async function _runProtocted(f, user: User, ...args) {
+async function _runProtocted(f: Function, user: User, ...args: any[]) {
 
 	if (locked_users.has(user.id)) {
-		throw UserBusyException(`Cannot generate pdf (type: ${type})` ,user.id);
+		throw new UserBusyException(`Cannot generate pdf for user: ` ,user.id);
 	}
 
 	locked_users.add(user.id);
@@ -208,7 +234,7 @@ async function _genLatexRec(user: User, file_pref: string, year: number, month:
 
 	if (estimate == null || isNaN(estimate)) {
 		throw new Error("No estimate found")
-	}		
+	}
 
 	// TODO: escape semicolon in comment	
 
@@ -266,7 +292,7 @@ async function _genLatexEst(user: User, file_pref: string, year: number, quarter
 	csvfilewriter.write(`${SALUTATION[user.gender]} ${user.name};${user.address};Arbeitnehmer${GENDER_END[user.gender]};Teilzeitmitarbeiter${GENDER_END[user.gender]};${isoToLocalDate(new Date().toISOString())}\n`)
 	
 	for (let i = 0; i < 3; ++i) {
-		csvfilewriter.write(`${MONTHS[(quarter - 1) * 3 + i]} ${year};${estimates[`estimate_${i}`]}\n`);
+		csvfilewriter.write(`${MONTHS[(quarter - 1) * 3 + i]} ${year};${(estimates as any)[`estimate_${i}`]}\n`);
 	}
 
 	csvfilewriter.end();
@@ -274,7 +300,7 @@ async function _genLatexEst(user: User, file_pref: string, year: number, quarter
 	const { stdout, exitCode } = await b.$`pdflatex -interaction=nonstopmode -halt-on-error -jobname=${file_pref} -output-format=pdf ${TEMPLATE_EST}`.cwd(dir).quiet().nothrow();
 
 	if (exitCode != 0) {
-		throw new LatexException("Failed to create estimate PDF", user.id, exitCode, stdout);
+		throw new LatexException("Failed to create estimate PDF", user.id, exitCode, stdout.toString());
 	}
 
 	return `${dir}/${file_pref}.pdf`;
diff --git a/pdfgen/template-est.tex b/templates/template-est.tex
similarity index 100%
rename from pdfgen/template-est.tex
rename to templates/template-est.tex
diff --git a/pdfgen/template-rec.tex b/templates/template-rec.tex
similarity index 100%
rename from pdfgen/template-rec.tex
rename to templates/template-rec.tex