fixes tick bug, sorts results

src/env.ts

@@ -6,10 +6,13 @@ type RunStep =
 
 type Scope = "all" | "pr-changes" | "changes-since-last-success";
 
+type SortTablesRows = "alphabetic" | "coverage-descending";
+
 export const GITHUB_TOKEN = process.env.INPUT_GITHUB_TOKEN as string;
 export const SCOPE = process.env.INPUT_SCOPE as Scope;
 export const RUN_STEPS: RunStep[] = (process.env.INPUT_RUN_STEPS || "")
   .split(",")
   .map((item) => item as RunStep);
 export const DEFAULT_BRANCH = process.env.DEFAULT_BRANCH;
 export const BASE_SHA = process.env.BASE_SHA;
+export const SORT_TABLES: SortTablesRows = "coverage-descending";

src/getLastSuccessfulSha.ts

@@ -0,0 +1,31 @@
+import * as core from "@actions/core";
+import * as github from "@actions/github";
+import { GITHUB_TOKEN } from "./env";
+
+export const getLastSuccessfulSha = async () => {
+  const octokit = github.getOctokit(GITHUB_TOKEN);
+  const currentBranch = github.context.ref.replace("refs/heads/", "");
+
+  try {
+    const { data: runs } = await octokit.rest.actions.listWorkflowRuns({
+      owner: github.context.repo.owner,
+      repo: github.context.repo.repo,
+      workflow_id: github.context.workflow,
+      status: "success",
+      branch: currentBranch,
+    });
+
+    const headCommits = runs.workflow_runs.map((run) => {
+      return run.head_commit;
+    });
+
+    const sortedHeadCommits = headCommits.sort(
+      (a, b) => Number(a!.timestamp) - Number(b!.timestamp)
+    );
+
+    return sortedHeadCommits[0]?.id;
+  } catch {
+    core.info("an error happened, no previous successful workflow run found.");
+    return undefined;
+  }
+};