memebot is Slack bot that posts images matching keywords.

Images are currently served only out of a local directory, but S3 support could happen.

You'll need go 1.5.1 or later, and a properly-configured GOPATH.

export GO15VENDOREXPERIMENT=1
go get github.com/zach-klippenstein/memebot/cmd/memebot

First, you need to set your Slack API token:

export SLACK_TOKEN=xxxx-xxxxxx…

Then start the bot with command-line config:

memebot \
    -images /var/memes \
    -serve-port 8080 \
    -serve-host my-public-domain.com \
    -serve-display-port 80
    -keyword-pattern "show me (.+)"

Run memebot -h to see usage information.

You can also dump information about the meme repository:

memebot -images /var/memes -list-keywords
memebot -images /var/memes -list-memes

Once you've created your Heroku app, set the GO15VENDOREXPERIMENT and other environment variables as described above. Note: PORT is set by Heroku, don't set it yourself. DISPLAY_PORT should be 80 (the public-facing port on Heroku's load balancer), and HOSTNAME should be whatever hostname your app is given (e.g. my-memebot.heroku.com).

To actually deploy the app, you will need to add the Heroku remote to your repo, create a Procfile, and push to master. I recommend creating a deploy branch and only adding your Procfile to that branch. You can also create a directory for images and add those. This allows you to keep your local master in sync with this repo (or whatever remote you're using), and merge your local master into your local deploy branch.

Here's an example of how you'd set this all up (assuming your Heroku app name is my-memebot):

cd $GOPATH/src/github.com/zach-klippenstein/memebot
git checkout -b deploy
cat >Procfile <<EOF
web memebot -images $IMAGES_DIR -serve-display-port 80 -serve-host $HOSTNAME -keyword-pattern "$KEYWORD_PATTERN"
EOF
mkdir images
# Add image files.
git add --all && git commit -m "Initial deployment."
heroku git:remote -a my-memebot

Then to actually deploy, just run:

git push heroku deploy:master