const { test } = require("node:test");
const assert = require("node:assert");
const fs = require("fs");
const path = require("path");
const os = require("os");
const { saveSiteSnapshot, findSiteDir, ensureSiteDir, sanitize } = require("../src/lib/siteConfigStore");

function makeTempDir() {
  return fs.mkdtempSync(path.join(os.tmpdir(), "org-master-sync-siteconfig-test-"));
}

test("sanitize strips path-unsafe characters and falls back to \"untitled\" when empty", () => {
  assert.strictEqual(sanitize("社員・組織マスタ管理テーブル"), "社員・組織マスタ管理テーブル");
  assert.strictEqual(sanitize("a/b\\c:d*e?f\"g<h>i|j"), "a_b_c_d_e_f_g_h_i_j");
  assert.strictEqual(sanitize(""), "untitled");
  assert.strictEqual(sanitize(undefined), "untitled");
});

test("saveSiteSnapshot creates configs/site-{siteId}_{title}/sitesettings/ with both latest and a timestamped history file", () => {
  const baseDir = makeTempDir();
  const now = new Date("2026-08-08T09:00:00.000Z");

  saveSiteSnapshot(1, { Title: "社員・組織マスタ管理テーブル" }, { now, baseDir });

  const siteDir = path.join(baseDir, "site-1_社員・組織マスタ管理テーブル");
  const settingsDir = path.join(siteDir, "sitesettings");
  assert.ok(fs.existsSync(settingsDir));

  const latestPath = path.join(settingsDir, "site-1_latest.json");
  assert.ok(fs.existsSync(latestPath));
  assert.deepStrictEqual(JSON.parse(fs.readFileSync(latestPath, "utf8")), { Title: "社員・組織マスタ管理テーブル" });

  const historyFiles = fs.readdirSync(settingsDir).filter((f) => f !== "site-1_latest.json");
  assert.strictEqual(historyFiles.length, 1);
  assert.ok(historyFiles[0].startsWith("site-1_2026-08-08T09-00-00"));
});

test("saveSiteSnapshot reuses the existing site-{siteId}_* folder on subsequent calls even if the title changes", () => {
  const baseDir = makeTempDir();

  saveSiteSnapshot(1, { Title: "旧タイトル" }, { now: new Date("2026-08-08T09:00:00.000Z"), baseDir });
  saveSiteSnapshot(1, { Title: "新タイトル" }, { now: new Date("2026-08-08T10:00:00.000Z"), baseDir });

  const dirs = fs.readdirSync(baseDir);
  assert.strictEqual(dirs.length, 1); // 新しいタイトルのフォルダを別途作らない
  assert.strictEqual(dirs[0], "site-1_旧タイトル");

  const settingsDir = path.join(baseDir, "site-1_旧タイトル", "sitesettings");
  assert.strictEqual(fs.readdirSync(settingsDir).length, 3); // latest.json + history 2件
  const latest = JSON.parse(fs.readFileSync(path.join(settingsDir, "site-1_latest.json"), "utf8"));
  assert.deepStrictEqual(latest, { Title: "新タイトル" }); // latest.jsonの中身は最新で上書き
});

test("findSiteDir locates a folder by its site- prefix regardless of the title suffix", () => {
  const baseDir = makeTempDir();
  fs.mkdirSync(path.join(baseDir, "site-42_何かのタイトル"), { recursive: true });

  assert.strictEqual(findSiteDir(baseDir, 42), path.join(baseDir, "site-42_何かのタイトル"));
  assert.strictEqual(findSiteDir(baseDir, 999), null);
});

test("ensureSiteDir creates a new site-{siteId}_{title} folder when none exists yet", () => {
  const baseDir = makeTempDir();
  const dir = ensureSiteDir(baseDir, 7, "新規サイト");
  assert.strictEqual(dir, path.join(baseDir, "site-7_新規サイト"));
  assert.ok(fs.existsSync(dir));
});