initial commit

README.md

@@ -1 +1,19 @@
-# go-github-actions
+# go-github-actions
+
+## Actions
+
+### gofmt
+
+Runs `gofmt` on files in the directory. Fails if any file is not properly formatted.
+
+```hcl
+action "gofmt" {
+  uses    = "sjkaliski/go-github-actions/fmt@v0.1.0"
+  needs   = "previous-action"
+  secrets = ["GITHUB_TOKEN"]
+
+  env {
+    GO_WORKING_DIR = "./path/to/go/files"
+  }
+}
+```

fmt/Dockerfile

@@ -0,0 +1,16 @@
+FROM golang:1.11
+
+LABEL "com.github.actions.name"="go fmt"
+LABEL "com.github.actions.description"="Run go fmt"
+LABEL "com.github.actions.icon"="terminal"
+LABEL "com.github.actions.color"="blue"
+
+LABEL "repository"="https://github.com/sjkaliski/go-github-actions"
+LABEL "homepage"="https://github.com/sjkaliski/go-github-actions"
+LABEL "maintainer"="Steve Kaliski <sjkaliski@gmail.com>"
+
+RUN apt-get update
+RUN apt-get install -y jq
+
+ADD entrypoint.sh /entrypoint.sh
+ENTRYPOINT ["/entrypoint.sh"]

fmt/README.md

@@ -0,0 +1,3 @@
+# go fmt
+
+Runs `gofmt`. To learn more about `gofmt`, see the [official docs](https://golang.org/cmd/gofmt/).

fmt/entrypoint.sh

@@ -0,0 +1,44 @@
+#!/bin/sh
+set -e
+
+cd "${GO_WORKING_DIR:-.}"
+
+# Check if any files are not formatted.
+set +e
+test -z "$(gofmt -l -d -e $(find . -type f -iname '*.go'))"
+SUCCESS=$?
+set -e
+
+# Exit if `go fmt` passes.
+if [ $SUCCESS -eq 0 ]; then
+  exit 0
+fi
+
+# Get list of unformatted files.
+set +e
+FILES=$(sh -c "gofmt -l . $*" 2>&1)
+echo "$FILES"
+set -e
+
+# Iterate through each unformatted file.
+OUTPUT=""
+for file in $FILES; do
+DIFF=$(gofmt -d -e "$file")
+OUTPUT="$OUTPUT
+\`$file\`
+
+\`\`\`diff
+$DIFF
+\`\`\`
+"
+done
+
+# Post results back as comment.
+COMMENT="#### \`go fmt\`
+$OUTPUT
+"
+PAYLOAD=$(echo '{}' | jq --arg body "$COMMENT" '.body = $body')
+COMMENTS_URL=$(cat /github/workflow/event.json | jq -r .pull_request.comments_url)
+curl -s -S -H "Authorization: token $GITHUB_TOKEN" --header "Content-Type: application/json" --data "$PAYLOAD" "$COMMENTS_URL" > /dev/null
+
+exit $SUCCESS