import { formatDuration, shortSha } from "@/lib/format";
import type { Run } from "@/lib/runs";

/** How long something ran (or has been running), or null if it hasn't started. */
export function runDuration(item: { startedAt: number | null; finishedAt: number | null }) {
  if (!item.startedAt) return null;
  return formatDuration((item.finishedAt ?? Date.now()) - item.startedAt);
}

/** What started a run: "Commit 1a2b3c4 pushed by ana", "Manually run by Claude Code for ana", "Pull request #4 synchronize by ana". */
export function triggerText(run: Run) {
  const who = run.agentName && run.actor ? `${run.agentName} for ${run.actor}` : run.actor;
  const by = who ? ` by ${who}` : "";
  const p = run.payload ?? {};
  const num = (key: string) => ((p[key] as { number?: number } | undefined)?.number ?? "?");
  const action = typeof p.action === "string" ? ` ${p.action.replace(/_/g, " ")}` : "";
  switch (run.event) {
    case "workflow_dispatch":
      return `Manually run${by}`;
    case "pull_request":
      return `Pull request #${num("pull_request")}${action}${by}`;
    case "pull_request_review":
      return `Review of pull request #${num("pull_request")}${by}`;
    case "issues":
      return `Issue #${num("issue")}${action}${by}`;
    case "issue_comment":
      return `Comment on #${p.pull_request ? num("pull_request") : num("issue")}${by}`;
    default:
      return `Commit ${shortSha(run.sha)} pushed${by}`;
  }
}

export const refName = (ref: string) => ref.replace(/^refs\/(heads|tags)\//, "");