Dangerfile

#!/usr/bin/env ruby

# Sometimes it's a README fix, or something like that - which isn't relevant for
# including in a project's CHANGELOG for example
declared_trivial = (github.pr_title + github.pr_body).include? "#trivial"

# Make it more obvious that a PR is a work in progress and shouldn't be merged yet
warn "PR is classed as Work in Progress" if github.pr_title.include? "[WIP]"

# Warn when there is a big PR
warn "Big PR" if git.lines_of_code > 500

# Ensure there is a summary for a PR
fail "Please provide a summary in the Pull Request description" if github.pr_body.length < 5

# Add a CHANGELOG entry for app changes
if git.lines_of_code > 50 && !git.modified_files.include?("CHANGELOG.md") && !declared_trivial
  fail "Please update [CHANGELOG.md](https://github.com/polydice/ICInputAccessory/blob/develop/CHANGELOG.md).", sticky: true
end

# Ensure a clean commits history
if git.commits.any? { |c| c.message =~ /^Merge branch/ }
  fail "Please rebase to get rid of the merge commits in this PR", sticky: true
end