#!/usr/bin/env -S deno run -A
/**
 * 生成 scripts/mp-sync/ledger.json 与 docs/porting/mp-sync-ledger.md 中的对照总表。
 *
 *   deno run -A scripts/mp-sync/build-ledger.mjs [--mp /opt/moviepilot-plus/upstream/MoviePilot] [--commit e6820a8]
 *
 * 数据来源:源码文件头 `@mp-source <上游路径> @ <提交>` 标签 + ledger.manual.json(未打标签的既有移植)。
 * 每条记录保存移植时的上游提交与该文件内容 sha256,供 check.mjs 比较。
 * 增量移植完成后:把对应源码文件头的提交号改为新提交,再重跑本脚本。
 */
import { readFileSync, writeFileSync } from "node:fs";
import {
  biomeFormat,
  DEFAULT_MP_REPO,
  DOC_PATH,
  LEDGER_PATH,
  MANUAL_PATH,
  parseArgs,
  resolveCommit,
  scanTags,
  upstreamHash,
  WATCH_DIRS,
} from "./lib.mjs";

const args = parseArgs(process.argv.slice(2));
const repo = args.mp ?? DEFAULT_MP_REPO;
const defaultCommit = resolveCommit(repo, args.commit ?? "e6820a8");

const byUpstream = new Map();
function add(upstream, commitRef, ours, source) {
  const commit = resolveCommit(repo, commitRef);
  const key = upstream;
  const e = byUpstream.get(key) ?? { upstream, commit, sha256: null, ours: [], sources: new Set() };
  if (e.commit !== commit)
    throw new Error(`${upstream} 在不同文件中登记了不同提交:${e.commit.slice(0, 7)} / ${commit.slice(0, 7)}`);
  for (const o of ours) if (!e.ours.includes(o)) e.ours.push(o);
  e.sources.add(source);
  byUpstream.set(key, e);
}

for (const t of scanTags()) add(t.upstream, t.commit, [t.ours], "tag");
const manual = JSON.parse(readFileSync(MANUAL_PATH, "utf8"));
for (const m of manual.moviepilot ?? []) add(m.upstream, m.commit ?? defaultCommit, m.ours, "manual");

const entries = [...byUpstream.values()]
  .map((e) => {
    const h = upstreamHash(repo, e.commit, e.upstream);
    if (!h) throw new Error(`上游 ${e.commit.slice(0, 7)}:${e.upstream} 不存在`);
    return {
      upstream: e.upstream,
      commit: e.commit,
      sha256: h,
      ours: e.ours.sort(),
      source: [...e.sources].sort().join("+"),
    };
  })
  .sort((a, b) => a.upstream.localeCompare(b.upstream));

const ledger = {
  $comment: "由 scripts/mp-sync/build-ledger.mjs 生成;不要手改(改源码文件头 @mp-source 标签或 ledger.manual.json)。",
  upstream: { name: "MoviePilot", url: "https://github.com/jxxghp/MoviePilot", branch: "v3", license: "GPL-3.0" },
  watchDirs: WATCH_DIRS,
  entries,
};
writeFileSync(LEDGER_PATH, biomeFormat(`${JSON.stringify(ledger, null, 2)}\n`, "scripts/mp-sync/ledger.json"));

// 更新文档对照总表(标记之间的内容)
const BEGIN = "<!-- mp-sync:table:begin -->";
const END = "<!-- mp-sync:table:end -->";
const rows = entries.map(
  (e) =>
    `| \`${e.upstream}\` | ${e.ours.map((o) => `\`${o.replace(/^packages\/adapters\/src\//, "adapters/").replace(/^packages\/testkit\/src\//, "testkit/")}\``).join("<br>")} | \`${e.commit.slice(0, 7)}\` | \`${e.sha256.slice(0, 12)}\` | ${e.source} |`,
);
const table = [
  BEGIN,
  `共 ${entries.length} 个上游文件(\`adapters/\` = \`packages/adapters/src/\`)。`,
  "",
  "| 上游文件 | 本项目文件 | 移植提交 | sha256(前 12 位) | 来源 |",
  "| --- | --- | --- | --- | --- |",
  ...rows,
  END,
].join("\n");
const doc = readFileSync(DOC_PATH, "utf8");
const i = doc.indexOf(BEGIN);
const j = doc.indexOf(END);
if (i < 0 || j < 0) throw new Error(`${DOC_PATH} 缺少表格标记`);
writeFileSync(DOC_PATH, doc.slice(0, i) + table + doc.slice(j + END.length));
console.log(`ledger.json:${entries.length} 个上游文件(${defaultCommit.slice(0, 7)});文档表格已更新`);