danger-swift

Write your Dangerfiles in Swift.

Not ready for production use. Requires a branch of Danger JS 2.x.

TODO

• Add introspection for finding the right paths for the Danger lib in the runner
• Investigate the right path for getting it on CI (Marathon + Homebrew?)

What it looks like today

You can make a Dangerfile that looks through modified/created/deleted files:

import Danger

let danger = Danger()
for file in danger.git.modifiedFiles {
    print(" - " + file)
}

warn("Warning: bad stuff")
fail("Failure: bad stuff happened")
markdown("## Markdown for GitHub")

But setting it up and running is not feasible right now, just development.

How it works

This project takes its ideas from how the Swift Package Manager handles package manifests. You can get the long story here, but the TLDR is that there is a runner which compiles and executes a runtime lib which exports its data out into JSON when the libs process is over.

So this project will export a lib ^ and a CLI tool danger-swift which is the runner. It will handle turning the Danger DSL JSON message from DangerJS and passing that into the eval'd Dangerfile.swift. When that process is finished it's expected that the Swift Danger object would post the results into a place where they can easily be passed back to DangerJS.

Dev

If you are not using Xcode 9 beta for command-line things, run the following command:

export DEVELOPER_DIR=/Applications/Xcode-beta.app/Contents/Developer

Now that tab of terminal will always be using the Xcode beta. You can skip this if you change the settings in Xcode's prefs.

git clone https://github.com/danger/danger-swift.git
cd danger-swift
swift build
swift package generate-xcodeproj
open Danger.xcodeproj

Then I tend to run it by eval the Dangerfile with:

swift build && swiftc --driver-mode=swift -L .build/debug -I .build/debug -lDanger Dangerfile.swift fixtures/eidolon_609.json fixtures/response_data.json

If you want to emulate how DangerJS's process will work entirely, then use`

swift build && cat fixtures/eidolon_609.json | ./.build/debug/danger-swift

Long-term

I, orta, only want to make a small proof of concept, as I won't be using this in production. The future for Artsy mobile is JS. However, I'm happy to have someone else turn it into a real project though, and I'll hang out and be useful.