RaffleDraw

User stories

Epic

As an event organiser, I want to distribute prizes to participants based on a random draw so that it is faring.

Initialisation

1. As an admin, I can register a list of participants so that participants see their names
2. As an admin, I can register a list of prizes so that participants see the prize to win

Run

1. As an admin, I can run the raffle draw so that participants see the winner
2. As an admin, I can validate the winner is present so that I can give him his prize
3. As an admin, I can rerun the raffle draw if winner is not here or if winner is not interested in the prize so that prize can be distributed
4. As an admin, I can run the raffle draw until there is no more prize to win so that raffle draw game is ended

Development

We decided that everyone work on a branch named as the slack username, so this is some useful git commands to start working:

Create your own branch

To create your own branch on the git repository:

• git clone https://github.com/DevchainUserGroup/RaffleDraw
• cd RaffleDraw
• git branch to list existing branches
• git checkout -b SLACK_USERNAME to create a new branch (-b) and switch on it (checkout)
• git branch to ensure your are on your branch, the one with a * before
• echo “build” > .gitignore create the .gitignore file that list all files to not commit, starting with build
• git config --global user.email "foo@bar.com" where foo@bar.com is the email used on your Github.com account

When you finish your development, you can commit them:

• git add . to handle all files (to commit)
• git commit -m "the goal of your commit"
• git push origin THE_NAME_OF_YOUR_BRANCH_AKA_SLACK_USERNAME to upload your commit on github

Locally browse the branch of another developer

Assuming you start from your own branch (* in front of the current branch):

$ git branch

* jacques
  master

Ensure that you have no uncommitted changes:

$ git status

On branch jacques
nothing to commit, working tree clean

List all (remote) branches:

$ git branch -a

* jacques
  master
  remotes/origin/HEAD -> origin/master
  remotes/origin/cbroillet
  remotes/origin/jacques
  remotes/origin/master
  remotes/origin/syllabus

Fetch all remotes:

$ git pull --all

And then locally switch to the wanted remote branch:

$ git checkout syllabus

Branch syllabus set up to track remote branch syllabus from origin.
Switched to a new branch 'syllabus'

Check:

$ git branch

  jacques
  master
* syllabus

You are now on the branch of syllabus!

Enjoy hacking ;)

Tips

If we create a Github Issue for each User Story we can reference them in the commit message as #ISSUEID, for example:

• git commit -m "#1 - Register a Participant: create the Attendee sol with unit test"

Environment

With @syllabus we summarized the environment as the following diagram (do not hesitate to complete/correct it):

NB: as I have not write access to the environment I put it there.

            Mac OS X──────────────────────────────────────────────────────────────────┐
            │                                                                         │
            │        $ cd vagrant                                                     │
            │        $ vagrant up   <<[ONCE]                                          │
            │        $ vagrant ssh                                                    │
            │                                                                         │
            │        VAGRANT───────────────────────────────────────────────────────┐  │
            │        │                                                             │  │
            │        │        $ cd docker                                          │  │
            │        │        $ docker image list                                  │  │
            │        │        $ make bash-truffle     <<[ONCE]                     │  │
            │        │        $ (make join-truffle)                                │  │
            │        │                                                             │  │
            │        │        TRUFFLE───────────────────────────────────────────┐  │  │
            │        │        │      $ testrpc                                  │  │  │
            │        │        │                                                 │  │  │
            │        │        │                                                 │  │  │
            │        │        │                                                 │  │  │
            │        │        └─────────────────────────────────────────────────┘  │  │
            │        │        TRUFFLE───────────────────────────────────────────┐  │  │
            │        │        │      $ truffle test                             │  │  │
            │        │        │                                                 │  │  │
            │        │        │      !! WORK / DEVELOP HERE !!                  │  │  │
            │        │        │                                                 │  │  │
            │        │        └─────────────────────────────────────────────────┘  │  │
            │        │                                                             │  │
            │        │                                                             │  │
            │        │                                                             │  │
            │        │        $ make build-geth     <<[ONCE]                       │  │
            │        │        $ make run-geth                                      │  │
            │        │                                                             │  │
            │        │        GETH──────────────────────────────────────────────┐  │  │
            │        │        │                                                 │  │  │
            │        │        │      Create a/my node available on the network. │  │  │
            │        │        │      MINING!!... So consuming CPU and storage:  │  │  │
            │        │        │                                                 │  │  │
            │        │        │      $ df -k                                    │  │  │
            │        │        │                                                 │  │  │
            │        │        └─────────────────────────────────────────────────┘  │  │
            │        │        $ make stop-geth                                     │  │
            │        │                                                             │  │
            │        └─────────────────────────────────────────────────────────────┘  │
            │                                                                         │
            └─────────────────────────────────────────────────────────────────────────┘