Fix change detection using Github API (#51)

Author: dorny

CHANGELOG.md

@@ -1,6 +1,7 @@
 # Changelog
 
 ## v2.5.3
+- [Fixed mapping of removed/deleted change status from github API](https://github.com/dorny/paths-filter/pull/51)
 - [Fixed retrieval of all changes via Github API when there are 100+ changes](https://github.com/dorny/paths-filter/pull/50)
 
 ## v2.5.2

dist/index.js

@@ -4729,22 +4729,22 @@ async function getChangedFilesFromGit(base, initialFetchDepth) {
 }
 // Uses github REST api to get list of files changed in PR
 async function getChangedFilesFromApi(token, pullRequest) {
-    var _a;
-    core.info(`Fetching list of changed files for PR#${pullRequest.number} from Github API`);
+    core.startGroup(`Fetching list of changed files for PR#${pullRequest.number} from Github API`);
+    core.info(`Number of changed_files is ${pullRequest.changed_files}`);
     const client = new github.GitHub(token);
     const pageSize = 100;
     const files = [];
-    let response;
-    let page = 0;
-    do {
-        response = await client.pulls.listFiles({
+    for (let page = 1; (page - 1) * pageSize < pullRequest.changed_files; page++) {
+        core.info(`Invoking listFiles(pull_number: ${pullRequest.number}, page: ${page}, per_page: ${pageSize})`);
+        const response = await client.pulls.listFiles({
             owner: github.context.repo.owner,
             repo: github.context.repo.repo,
             pull_number: pullRequest.number,
             page,
             per_page: pageSize
         });
         for (const row of response.data) {
+            core.info(`[${row.status}] ${row.filename}`);
             // There's no obvious use-case for detection of renames
             // Therefore we treat it as if rename detection in git diff was turned off.
             // Rename is replaced by delete of original filename and add of new filename
@@ -4760,14 +4760,16 @@ async function getChangedFilesFromApi(token, pullRequest) {
                 });
             }
             else {
+                // Github status and git status variants are same except for deleted files
+                const status = row.status === 'removed' ? file_1.ChangeStatus.Deleted : row.status;
                 files.push({
                     filename: row.filename,
-                    status: row.status
+                    status
                 });
             }
         }
-        page++;
-    } while (((_a = response === null || response === void 0 ? void 0 : response.data) === null || _a === void 0 ? void 0 : _a.length) > 0);
+    }
+    core.endGroup();
     return files;
 }
 function exportResults(results, format) {

src/main.ts

@@ -2,7 +2,6 @@ import * as fs from 'fs'
 import * as core from '@actions/core'
 import * as github from '@actions/github'
 import {Webhooks} from '@octokit/webhooks'
-import type {Octokit} from '@octokit/rest'
 
 import {Filter, FilterResults} from './filter'
 import {File, ChangeStatus} from './file'
@@ -124,21 +123,22 @@ async function getChangedFilesFromApi(
   token: string,
   pullRequest: Webhooks.WebhookPayloadPullRequestPullRequest
 ): Promise<File[]> {
-  core.info(`Fetching list of changed files for PR#${pullRequest.number} from Github API`)
+  core.startGroup(`Fetching list of changed files for PR#${pullRequest.number} from Github API`)
+  core.info(`Number of changed_files is ${pullRequest.changed_files}`)
   const client = new github.GitHub(token)
   const pageSize = 100
   const files: File[] = []
-  let response: Octokit.Response<Octokit.PullsListFilesResponse>
-  let page = 0
-  do {
-    response = await client.pulls.listFiles({
+  for (let page = 1; (page - 1) * pageSize < pullRequest.changed_files; page++) {
+    core.info(`Invoking listFiles(pull_number: ${pullRequest.number}, page: ${page}, per_page: ${pageSize})`)
+    const response = await client.pulls.listFiles({
       owner: github.context.repo.owner,
       repo: github.context.repo.repo,
       pull_number: pullRequest.number,
       page,
       per_page: pageSize
     })
     for (const row of response.data) {
+      core.info(`[${row.status}] ${row.filename}`)
       // There's no obvious use-case for detection of renames
       // Therefore we treat it as if rename detection in git diff was turned off.
       // Rename is replaced by delete of original filename and add of new filename
@@ -153,15 +153,17 @@ async function getChangedFilesFromApi(
           status: ChangeStatus.Deleted
         })
       } else {
+        // Github status and git status variants are same except for deleted files
+        const status = row.status === 'removed' ? ChangeStatus.Deleted : (row.status as ChangeStatus)
         files.push({
           filename: row.filename,
-          status: row.status as ChangeStatus
+          status
         })
       }
     }
-    page++
-  } while (response?.data?.length > 0)
+  }
 
+  core.endGroup()
   return files
 }