# statusbot

statusbot is a chat bot built on the [Hubot][hubot] framework. It was
initially generated by [generator-hubot][generator-hubot], and configured to be
deployed on [Heroku][heroku] to get you up and running as quick as possible.

This README is intended to help get you started. Definitely update and improve
to talk about your own instance, how to use and deploy, what functionality is
available, etc!

[heroku]: http://www.heroku.com
[hubot]: http://hubot.github.com
[generator-hubot]: https://github.com/github/generator-hubot

## Creating the bot GitHub App

This bot is meant to be packaged as a GitHub App. There are two steps to it: creating the app, and installing the app. Creating a GitHub App only needs to be done once and the app can be made public to be reused for any number of repositories and organizations.

1. Create the GitHub App:
    1. In GitHub, go to `Settings/Developer settings/GitHub Apps` and click on `New GitHub App`
    1. Enter the bot name in `GitHub App name`, e.g. `Status GitHub Bot`
    1. In `Homepage URL`, enter the root endpoint of the service, e.g. https://5e63b0ab.ngrok.io/
    1. In `Webhook URL`, enter the `/hubot/github-repo-listener` endpoint of the service, e.g. https://5e63b0ab.ngrok.io/hubot/github-repo-listener
    1. ~~In `Webhook secret (optional)`, enter a string of characters that matches the value in the config.json file deployed with the service.~~
    1. The app needs `Read-only` permission to `Pull requests`, `Read & write` permission to `Repository projects`.
    1. The app subscribes to `Pull request` events.
    1. Generate a private key, and save it in the root folder of the service, with the following file name: `status-github-bot.pem`
1. Installing the bot service:
    1. Deploy the bot to the cloud.
    1. Make sure the `status-github-bot.pem` file is present in the same directory as this README.md file.
    1. Install redis (see below in the Persistance section) so that the bot can recover data after being restarted.
1. Install the GitHub App in an account:
    1. Select the repositories where the bot should work (e.g. `status-react`)

### Running statusbot Locally

You can test your hubot by running the following, however some plugins will not
behave as expected unless the [environment variables](#configuration) they rely
upon have been set.

You can start statusbot locally by running:

    % bin/hubot

You'll see some start up output and a prompt:

    [Sat Feb 28 2015 12:38:27 GMT+0000 (GMT)] INFO Using default redis on localhost:6379
    statusbot>

Then you can interact with statusbot by typing `statusbot help`.

    statusbot> statusbot help
    statusbot animate me <query> - The same thing as `image me`, except adds [snip]
    statusbot help - Displays all of the help commands that statusbot knows about.
    ...

### Configuration

A few scripts (including some installed by default) require environment
variables to be set as a simple form of configuration.

Each script should have a commented header which contains a "Configuration"
section that explains which values it requires to be placed in which variable.
When you have lots of scripts installed this process can be quite labour
intensive. The following shell command can be used as a stop gap until an
easier way to do this has been implemented.

    grep -o 'hubot-[a-z0-9_-]\+' external-scripts.json | \
      xargs -n1 -I {} sh -c 'sed -n "/^# Configuration/,/^#$/ s/^/{} /p" \
          $(find node_modules/{}/ -name "*.coffee")' | \
        awk -F '#' '{ printf "%-25s %s\n", $1, $2 }'

How to set environment variables will be specific to your operating system.
Rather than recreate the various methods and best practices in achieving this,
it's suggested that you search for a dedicated guide focused on your OS.

### Scripting

An example script is included at `scripts/example.coffee`, so check it out to
get started, along with the [Scripting Guide][scripting-docs].

For many common tasks, there's a good chance someone has already one to do just
the thing.

[scripting-docs]: https://github.com/github/hubot/blob/master/docs/scripting.md

### external-scripts

There will inevitably be functionality that everyone will want. Instead of
writing it yourself, you can use existing plugins.

Hubot is able to load plugins from third-party `npm` packages. This is the
recommended way to add functionality to your hubot. You can get a list of
available hubot plugins on [npmjs.com][npmjs] or by using `npm search`:

    % npm search hubot-scripts panda
    NAME             DESCRIPTION                        AUTHOR DATE       VERSION KEYWORDS
    hubot-pandapanda a hubot script for panda responses =missu 2014-11-30 0.9.2   hubot hubot-scripts panda
    ...


To use a package, check the package's documentation, but in general it is:

1. Use `npm install --save` to add the package to `package.json` and install it
2. Add the package name to `external-scripts.json` as a double quoted string

You can review `external-scripts.json` to see what is included by default.

##### Advanced Usage

It is also possible to define `external-scripts.json` as an object to
explicitly specify which scripts from a package should be included. The example
below, for example, will only activate two of the six available scripts inside
the `hubot-fun` plugin, but all four of those in `hubot-auto-deploy`.

```json
{
  "hubot-fun": [
    "crazy",
    "thanks"
  ],
  "hubot-auto-deploy": "*"
}
```

**Be aware that not all plugins support this usage and will typically fallback
to including all scripts.**

[npmjs]: https://www.npmjs.com

### hubot-scripts

Before hubot plugin packages were adopted, most plugins were held in the
[hubot-scripts][hubot-scripts] package. Some of these plugins have yet to be
migrated to their own packages. They can still be used but the setup is a bit
different.

To enable scripts from the hubot-scripts package, add the script name with
extension as a double quoted string to the `hubot-scripts.json` file in this
repo.

[hubot-scripts]: https://github.com/github/hubot-scripts

##  Persistence

If you are going to use the `hubot-redis-brain` package (strongly suggested),
you will need to add the Redis to Go addon on Heroku which requires a verified
account or you can create an account at [Redis to Go][redistogo] and manually
set the `REDISTOGO_URL` variable.

    % heroku config:add REDISTOGO_URL="..."

If you don't need any persistence feel free to remove the `hubot-redis-brain`
from `external-scripts.json` and you don't need to worry about redis at all.

[redistogo]: https://redistogo.com/

## Adapters

Adapters are the interface to the service you want your hubot to run on, such
as Campfire or IRC. There are a number of third party adapters that the
community have contributed. Check [Hubot Adapters][hubot-adapters] for the
available ones.

If you would like to run a non-Campfire or shell adapter you will need to add
the adapter package as a dependency to the `package.json` file in the
`dependencies` section.

Once you've added the dependency with `npm install --save` to install it you
can then run hubot with the adapter.

    % bin/hubot -a <adapter>

Where `<adapter>` is the name of your adapter without the `hubot-` prefix.

[hubot-adapters]: https://github.com/github/hubot/blob/master/docs/adapters.md

## Deployment

    % heroku create --stack cedar
    % git push heroku master

If your Heroku account has been verified you can run the following to enable
and add the Redis to Go addon to your app.

    % heroku addons:add redistogo:nano

If you run into any problems, checkout Heroku's [docs][heroku-node-docs].

You'll need to edit the `Procfile` to set the name of your hubot.

More detailed documentation can be found on the [deploying hubot onto
Heroku][deploy-heroku] wiki page.

### Deploying to UNIX or Windows

If you would like to deploy to either a UNIX operating system or Windows.
Please check out the [deploying hubot onto UNIX][deploy-unix] and [deploying
hubot onto Windows][deploy-windows] wiki pages.

[heroku-node-docs]: http://devcenter.heroku.com/articles/node-js
[deploy-heroku]: https://github.com/github/hubot/blob/master/docs/deploying/heroku.md
[deploy-unix]: https://github.com/github/hubot/blob/master/docs/deploying/unix.md
[deploy-windows]: https://github.com/github/hubot/blob/master/docs/deploying/windows.md

## Campfire Variables

If you are using the Campfire adapter you will need to set some environment
variables. If not, refer to your adapter documentation for how to configure it,
links to the adapters can be found on [Hubot Adapters][hubot-adapters].

Create a separate Campfire user for your bot and get their token from the web
UI.

    % heroku config:add HUBOT_CAMPFIRE_TOKEN="..."

Get the numeric IDs of the rooms you want the bot to join, comma delimited. If
you want the bot to connect to `https://mysubdomain.campfirenow.com/room/42`
and `https://mysubdomain.campfirenow.com/room/1024` then you'd add it like
this:

    % heroku config:add HUBOT_CAMPFIRE_ROOMS="42,1024"

Add the subdomain hubot should connect to. If you web URL looks like
`http://mysubdomain.campfirenow.com` then you'd add it like this:

    % heroku config:add HUBOT_CAMPFIRE_ACCOUNT="mysubdomain"

[hubot-adapters]: https://github.com/github/hubot/blob/master/docs/adapters.md

## Restart the bot

You may want to get comfortable with `heroku logs` and `heroku restart` if
you're having issues.