Feature: Save output

Fixes trstringer#131

action.yaml

@@ -31,6 +31,11 @@ inputs:
   additional-denied-words:
     description: Comma separated list of words that can be used to deny beyond the defaults.
     default: ''
+outputs:
+  issue-number:
+    description: The number of the issued created
+  issue-url:
+    description: The URL of the issued created
 runs:
   using: docker
   image: docker://ghcr.io/trstringer/manual-approval:1.9.1

approval.go

@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"fmt"
+	"os"
 	"regexp"
 	"strings"
 
@@ -97,6 +98,21 @@ Respond %s to continue workflow or %s to cancel.`,
 	return nil
 }
 
+func (a *approvalEnvironment) saveOutput(ctx context.Context) (bool, error) {
+	outputFile := os.Getenv("GITHUB_OUTPUT")
+	if outputFile == "" {
+		return false, nil
+	}
+
+	output := []byte(fmt.Sprintf("issue-number=%v\nissue-url=%v\n", a.approvalIssueNumber, a.approvalIssue.GetURL()))
+	err := os.WriteFile(outputFile, output, 0644)
+	if err != nil {
+		return false, err
+	}
+
+	return true, nil
+}
+
 func approvalFromComments(comments []*github.IssueComment, approvers []string, minimumApprovals int) (approvalStatus, error) {
 	remainingApprovers := make([]string, len(approvers))
 	copy(remainingApprovers, approvers)

approval_test.go

@@ -1,6 +1,8 @@
 package main
 
 import (
+	"errors"
+	"os"
 	"testing"
 
 	"github.com/google/go-github/v43/github"
@@ -427,3 +429,60 @@ func TestDeniedCommentBody(t *testing.T) {
 		})
 	}
 }
+
+func TestSaveOutput(t *testing.T) {
+	testCases := []struct {
+		name                string
+		approvalIssueNumber int
+		env_github_output   string
+		isSuccess           bool
+	}{
+		{
+			name:                "save_output_with_env",
+			approvalIssueNumber: 123,
+			env_github_output:   "./output.txt",
+			isSuccess:           true,
+		},
+		{
+			name:                "fail_save_output_without_env",
+			approvalIssueNumber: 123,
+			env_github_output:   "",
+			isSuccess:           false,
+		},
+	}
+
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+			os.Setenv("GITHUB_OUTPUT", testCase.env_github_output)
+			a := approvalEnvironment{
+				client:              nil,
+				repoFullName:        "",
+				repo:                "",
+				repoOwner:           "",
+				runID:               -1,
+				approvalIssueNumber: testCase.approvalIssueNumber,
+				issueTitle:          "",
+				issueBody:           "",
+				issueApprovers:      nil,
+				minimumApprovals:    0,
+			}
+
+			os.Remove(testCase.env_github_output)
+			actual, err := a.saveOutput(nil)
+
+			if err != nil {
+				t.Fatalf("error creating output file: %v: %v", testCase.env_github_output, err)
+			}
+
+			if actual != testCase.isSuccess {
+				t.Fatalf("expected %v but got %v", testCase.isSuccess, actual)
+			}
+
+			if actual == true {
+				if _, err := os.Stat(testCase.env_github_output); errors.Is(err, os.ErrNotExist) {
+					t.Fatalf("expected create output file %v but it was not", testCase.env_github_output)
+				}
+			}
+		})
+	}
+}

main.go

@@ -193,6 +193,12 @@ func main() {
 		os.Exit(1)
 	}
 
+	_, err = apprv.saveOutput(ctx)
+	if err != nil {
+		fmt.Printf("error saving output: %v", err)
+		os.Exit(1)
+	}
+
 	killSignalChannel := make(chan os.Signal, 1)
 	signal.Notify(killSignalChannel, os.Interrupt)