/**
 * 一次性脚本:把所有项目的 launchedAt 改成「该项目最早一次 commit 时间」。
 * 没有绑定 repo / repo 里无 commit 的项目,默认 2026-01-01。
 *
 * 用法:bun run scripts/backfill-launched-at.ts
 */
import { asc, eq, inArray } from 'drizzle-orm';
import { db } from '../src/db/index';
import { projects, projectRepos, gitCommits } from '../src/db/schema';

const DEFAULT_DATE = new Date('2026-01-01T00:00:00+08:00');

/** 抹除 .git 后缀和 URL 前缀,只保留仓库名 */
function normalizeRepoName(raw: string): string {
  let cleaned = raw.trim().replace(/\.git$/, '');
  if (cleaned.includes('://')) {
    try {
      const parts = new URL(cleaned).pathname.split('/').filter(Boolean);
      return parts[parts.length - 1] || cleaned;
    } catch { /* fallthrough */ }
  }
  if (cleaned.includes('/')) return cleaned.split('/').pop() || cleaned;
  return cleaned;
}

const all = await db.select().from(projects);
console.log(`Total projects: ${all.length}`);

let withCommitsCount = 0, fallbackCount = 0;

for (const p of all) {
  const repos = await db.select().from(projectRepos).where(eq(projectRepos.projectId, p.id));
  const repoNames = repos.map(r => normalizeRepoName(r.repoName));

  let launchedAt = DEFAULT_DATE;
  let source = 'default-2026-01-01';

  if (repoNames.length > 0) {
    const earliest = await db.select({ committedAt: gitCommits.committedAt, repoName: gitCommits.repoName, sha: gitCommits.sha })
      .from(gitCommits)
      .where(inArray(gitCommits.repoName, repoNames))
      .orderBy(asc(gitCommits.committedAt))
      .limit(1);
    if (earliest.length > 0 && earliest[0].committedAt) {
      launchedAt = earliest[0].committedAt instanceof Date ? earliest[0].committedAt : new Date(earliest[0].committedAt);
      source = `first commit ${earliest[0].repoName}/${earliest[0].sha?.slice(0, 7)}`;
      withCommitsCount += 1;
    } else {
      fallbackCount += 1;
    }
  } else {
    fallbackCount += 1;
  }

  await db.update(projects).set({
    launchedAt,
    updatedAt: new Date(),
  }).where(eq(projects.id, p.id));

  const label = `${p.identifier || p.id} (${p.name})`;
  console.log(`  ${label.padEnd(50)} → ${launchedAt.toISOString().slice(0, 10)}  [${source}]`);
}

console.log('');
console.log(`Done. with-commits=${withCommitsCount} fallback=${fallbackCount}`);
process.exit(0);