start over with nextjs

lib/renderer.ts

@@ -0,0 +1,51 @@
+import { mkdir, writeFile } from 'fs'
+import { spawn } from 'child_process'
+import { v1 as uuidv1 } from 'uuid'
+
+import { getDirPath, getDocPath } from './utils';
+
+
+function copyToTemp(id: string, texDocument: string): Promise<string> {
+    return new Promise((resolve, reject) => {
+        const dirPath = getDirPath(id);
+
+        mkdir(dirPath, (err) => {
+            if (err) {
+                reject(err);
+                return;
+            }
+
+            const docPath = getDocPath(id);
+            writeFile(docPath, texDocument, (err) => {
+                if (err) {
+                    reject(err);
+                }
+                resolve(id);
+            });
+        });
+    });
+}
+
+function generateDoc(id: string) {
+    return new Promise((resolve, reject) => {
+        const pdflatex = spawn('pdflatex', ['-interaction', 'nonstopmode', getDocPath(id)], { cwd: getDirPath(id) });
+        pdflatex.stderr.on('data', (data) => {
+            console.error('onData', data);
+        });
+
+        pdflatex.on('close', (code) => {
+            if (code > 0) {
+                reject(`pdflatex returned with code ${code}`);
+                return;
+            }
+            console.log(`PDF ${id} generated`);
+            resolve(id);
+        });
+    });
+}
+
+export default function(texDocument: string) {
+    const id = uuidv1();
+    return copyToTemp(id, texDocument)
+        .then(generateDoc);
+};

lib/store.ts

@@ -0,0 +1,14 @@
+const storeDir = process.env.JSON_STORE || '/tmp/pdfer-store/';
+
+import { promisify } from 'util';
+
+import JsonStore from 'json-fs-store'
+
+const store = JsonStore(storeDir);
+
+console.log(`using json-store at ${storeDir}`);
+
+export const list = promisify(store.list);
+export const load = promisify(store.load);
+export const add = promisify(store.add);
+export const remove = promisify(store.remove);

lib/templates.ts

@@ -0,0 +1,60 @@
+function convertLineBreaks(string) {
+    return string.replace(/\n/g, '\\\\');
+};
+
+export function brief(options) {
+
+    const {
+        template = 'brief-fam',
+        subject = '',
+        yourRef = '',
+        yourRefName = 'Ihr Zeichen',
+        yourMail = '',
+        myRef = '',
+        customer = '',
+        invoice = '',
+        date = '\\today',
+        signature = '',
+        specialMail = '',
+        address = 'Max Mustermann\\\\Musterstrasse\\\\12345 Musterstadt',
+        opening = 'Sehr geehrte Damen und Herren',
+        body = '',
+        closing = 'Mit freundlichen Grüßen',
+        ps = '',
+        enclosing = '',
+    } = options;
+
+    return `% brief document
+\\documentclass{scrlttr2}
+\\LoadLetterOption{${template}}
+
+\\setkomavar{subject}{${subject}}
+
+\\setkomavar{yourref}[${yourRefName}]{${yourRef}}
+\\setkomavar{yourmail}{${yourMail}}
+\\setkomavar{myref}{${myRef}}
+\\setkomavar{customer}{${customer}}
+\\setkomavar{invoice}{${invoice}}
+
+\\setkomavar{date}{${date}}
+
+%\\setkomavar{signature}{${signature}}
+
+\\setkomavar{specialmail}{${specialMail}}
+
+\\begin{document}
+\\begin{letter}{${convertLineBreaks(address)}}
+
+    \\opening{${opening},}
+
+    ${convertLineBreaks(body)}
+
+    \\closing{${closing}}
+
+    \\ps{${ps}}
+
+    %\\encl{${enclosing}}
+
+\\end{letter}
+\\end{document}`;
+};

lib/utils.ts

@@ -0,0 +1,13 @@
+import path from 'path';
+
+export function getDirPath(id) {
+    return `/tmp/pdfer-${id}`;
+}
+
+export function getDocPath(id) {
+    return path.join(getDirPath(id), 'doc.tex');
+}
+
+export function getPdfPath(id) {
+    return path.join(getDirPath(id), 'doc.pdf');
+}