Revert "handle pull_request events separately (#10)" (#11)

This reverts commit 8076f3c.

plugin/get.go

@@ -2,19 +2,13 @@ package plugin
 
 import (
 	"context"
-	"regexp"
-	"strconv"
 
 	"github.com/drone/drone-go/drone"
 
 	"github.com/google/go-github/github"
 	"golang.org/x/oauth2"
 )
 
-// regular expression to extract the pull request number
-// from the git ref (e.g. refs/pulls/{d}/head)
-var re = regexp.MustCompile("\\d+")
-
 func getFilesChanged(repo drone.Repo, build drone.Build, token string) ([]string, error) {
 	newctx := context.Background()
 	ts := oauth2.StaticTokenSource(
@@ -25,44 +19,18 @@ func getFilesChanged(repo drone.Repo, build drone.Build, token string) ([]string
 	client := github.NewClient(tc)
 
 	var commitFiles []github.CommitFile
-
-	if build.Event == "pull_request" {
-		s := re.FindString(build.Ref)
-		d, _ := strconv.Atoi(s)
-
-		listOpts := &github.ListOptions{
-			Page:    1,
-			PerPage: 300,
-		}
-		allFiles := []*github.CommitFile{}
-
-		for {
-			cfs, resp, err := client.PullRequests.ListFiles(newctx, repo.Namespace, repo.Name, d, listOpts)
-			if err != nil {
-				return nil, err
-			}
-
-			allFiles = append(allFiles, cfs...)
-			if resp.NextPage == 0 {
-				break
-			}
-			listOpts.Page = resp.NextPage
-		}
-		for _, file := range allFiles {
-			commitFiles = append(commitFiles, *file)
-		}
-	} else if build.Before == "" || build.Before == "0000000000000000000000000000000000000000" {
-		rc, _, err := client.Repositories.GetCommit(newctx, repo.Namespace, repo.Name, build.After)
+	if build.Before == "" || build.Before == "0000000000000000000000000000000000000000" {
+		response, _, err := client.Repositories.GetCommit(newctx, repo.Namespace, repo.Name, build.After)
 		if err != nil {
 			return nil, err
 		}
-		commitFiles = rc.Files
+		commitFiles = response.Files
 	} else {
-		cc, _, err := client.Repositories.CompareCommits(newctx, repo.Namespace, repo.Name, build.Before, build.After)
+		response, _, err := client.Repositories.CompareCommits(newctx, repo.Namespace, repo.Name, build.Before, build.After)
 		if err != nil {
 			return nil, err
 		}
-		commitFiles = cc.Files
+		commitFiles = response.Files
 	}
 
 	var files []string