1 files changed, 102 insertions, 21 deletions

diff --git a/src/server/ActionUtilities.ts b/src/server/ActionUtilities.ts
index 4fe7374d1..60f66c878 100644
--- a/src/server/ActionUtilities.ts
+++ b/src/server/ActionUtilities.ts
@@ -1,46 +1,81 @@
-import * as fs from 'fs';
+import { readFile, writeFile, exists, mkdir, unlink, createWriteStream } from 'fs';
 import { ExecOptions } from 'shelljs';
 import { exec } from 'child_process';
 import * as path from 'path';
 import * as rimraf from "rimraf";
-import { yellow } from 'colors';
+import { yellow, Color } from 'colors';
+import * as nodemailer from "nodemailer";
+import { MailOptions } from "nodemailer/lib/json-transport";
+import Mail = require('nodemailer/lib/mailer');
+
+const projectRoot = path.resolve(__dirname, "../../");
+export function pathFromRoot(relative?: string) {
+    if (!relative) {
+        return projectRoot;
+    }
+    return path.resolve(projectRoot, relative);
+}
+
+export async function fileDescriptorFromStream(path: string) {
+    const logStream = createWriteStream(path);
+    return new Promise<number>(resolve => logStream.on("open", resolve));
+}
 
 export const command_line = (command: string, fromDirectory?: string) => {
     return new Promise<string>((resolve, reject) => {
         const options: ExecOptions = {};
         if (fromDirectory) {
-            options.cwd = path.join(__dirname, fromDirectory);
+            options.cwd = fromDirectory ? path.resolve(projectRoot, fromDirectory) : projectRoot;
         }
         exec(command, options, (err, stdout) => err ? reject(err) : resolve(stdout));
     });
 };
 
 export const read_text_file = (relativePath: string) => {
-    const target = path.join(__dirname, relativePath);
+    const target = path.resolve(__dirname, relativePath);
     return new Promise<string>((resolve, reject) => {
-        fs.readFile(target, (err, data) => err ? reject(err) : resolve(data.toString()));
+        readFile(target, (err, data) => err ? reject(err) : resolve(data.toString()));
     });
 };
 
 export const write_text_file = (relativePath: string, contents: any) => {
-    const target = path.join(__dirname, relativePath);
+    const target = path.resolve(__dirname, relativePath);
     return new Promise<void>((resolve, reject) => {
-        fs.writeFile(target, contents, (err) => err ? reject(err) : resolve());
+        writeFile(target, contents, (err) => err ? reject(err) : resolve());
     });
 };
 
-export interface LogData {
+export type Messager<T> = (outcome: { result: T | undefined, error: Error | null }) => string;
+
+export interface LogData<T> {
     startMessage: string;
-    endMessage: string;
-    action: () => void | Promise<void>;
+    // if you care about the execution informing your log, you can pass in a function that takes in the result and a potential error and decides what to write
+    endMessage: string | Messager<T>;
+    action: () => T | Promise<T>;
+    color?: Color;
 }
 
 let current = Math.ceil(Math.random() * 20);
-export async function log_execution({ startMessage, endMessage, action }: LogData) {
-    const color = `\x1b[${31 + current++ % 6}m%s\x1b[0m`;
-    console.log(color, `${startMessage}...`);
-    await action();
-    console.log(color, endMessage);
+export async function log_execution<T>({ startMessage, endMessage, action, color }: LogData<T>): Promise<T | undefined> {
+    let result: T | undefined = undefined, error: Error | null = null;
+    const resolvedColor = color || `\x1b[${31 + ++current % 6}m%s\x1b[0m`;
+    log_helper(`${startMessage}...`, resolvedColor);
+    try {
+        result = await action();
+    } catch (e) {
+        error = e;
+    } finally {
+        log_helper(typeof endMessage === "string" ? endMessage : endMessage({ result, error }), resolvedColor);
+    }
+    return result;
+}
+
+function log_helper(content: string, color: Color | string) {
+    if (typeof color === "string") {
+        console.log(color, content);
+    } else {
+        console.log(color(content));
+    }
 }
 
 export function logPort(listener: string, port: number) {
@@ -61,10 +96,10 @@ export function msToTime(duration: number) {
 }
 
 export const createIfNotExists = async (path: string) => {
-    if (await new Promise<boolean>(resolve => fs.exists(path, resolve))) {
+    if (await new Promise<boolean>(resolve => exists(path, resolve))) {
         return true;
     }
-    return new Promise<boolean>(resolve => fs.mkdir(path, error => resolve(error === null)));
+    return new Promise<boolean>(resolve => mkdir(path, error => resolve(error === null)));
 };
 
 export async function Prune(rootDirectory: string): Promise<boolean> {
@@ -72,8 +107,54 @@ export async function Prune(rootDirectory: string): Promise<boolean> {
     return error === null;
 }
 
-export const Destroy = (mediaPath: string) => new Promise<boolean>(resolve => fs.unlink(mediaPath, error => resolve(error === null)));
+export const Destroy = (mediaPath: string) => new Promise<boolean>(resolve => unlink(mediaPath, error => resolve(error === null)));
 
-export function addBeforeExitHandler(handler: NodeJS.BeforeExitListener) {
-    process.on("beforeExit", handler);
-}
+export namespace Email {
+
+    const smtpTransport = nodemailer.createTransport({
+        service: 'Gmail',
+        auth: {
+            user: 'brownptcdash@gmail.com',
+            pass: 'browngfx1'
+        }
+    });
+
+    export interface DispatchOptions<T extends string | string[]> {
+        to: T;
+        subject: string;
+        content: string;
+        attachments?: Mail.Attachment | Mail.Attachment[];
+    }
+
+    export interface DispatchFailure {
+        recipient: string;
+        error: Error;
+    }
+
+    export async function dispatchAll({ to, subject, content, attachments }: DispatchOptions<string[]>) {
+        const failures: DispatchFailure[] = [];
+        await Promise.all(to.map(async recipient => {
+            let error: Error | null;
+            const resolved = attachments ? "length" in attachments ? attachments : [attachments] : undefined;
+            if ((error = await Email.dispatch({ to: recipient, subject, content, attachments: resolved })) !== null) {
+                failures.push({
+                    recipient,
+                    error
+                });
+            }
+        }));
+        return failures.length ? failures : undefined;
+    }
+
+    export async function dispatch({ to, subject, content, attachments }: DispatchOptions<string>): Promise<Error | null> {
+        const mailOptions = {
+            to,
+            from: 'brownptcdash@gmail.com',
+            subject,
+            text: `Hello ${to.split("@")[0]},\n\n${content}`,
+            attachments
+        } as MailOptions;
+        return new Promise<Error | null>(resolve => smtpTransport.sendMail(mailOptions, resolve));
+    }
+
+}
\ No newline at end of file