import assert from "node:assert/strict";
import fs from "node:fs";
import path from "node:path";

const root = path.resolve(import.meta.dirname, "..");
const sourcePath = path.join(root, "client", "src", "utils", "authCompat.js");
const source = fs.readFileSync(sourcePath, "utf8");

function createStorage() {
   const values = new Map();
   return {
      get length() {
         return values.size;
      },
      getItem(key) {
         return values.has(key) ? values.get(key) : null;
      },
      setItem(key, value) {
         values.set(key, String(value));
      },
      removeItem(key) {
         values.delete(key);
      },
      key(index) {
         return Array.from(values.keys())[index] ?? null;
      },
   };
}

function loadAuthCompat(windowLike) {
   const transformed = source
      .replace(/export const ([A-Za-z0-9_]+) =/g, "const $1 =")
      .replace(/export \{ AUTH_STORAGE_KEYS \};/g, "")
      + "\nreturn { ensureDevMockAuthInfo, hasCompatibleAuthInfo, getCompatibleUserId, getCompatibleAuthUserInfo, AUTH_STORAGE_KEYS };";
   return new Function("window", transformed)(windowLike);
}

function createWindow() {
   return {
      localStorage: createStorage(),
      sessionStorage: createStorage(),
   };
}

{
   const windowLike = createWindow();
   const auth = loadAuthCompat(windowLike);

   const seeded = auth.ensureDevMockAuthInfo({ isDev: true, env: {} });

   assert.equal(seeded, true);
   assert.equal(auth.hasCompatibleAuthInfo(), true);
   assert.equal(auth.getCompatibleUserId(), "local-dev-user");
   assert.equal(windowLike.localStorage.getItem("aiTenderLoginIdentity"), "PHONE");
   assert.equal(windowLike.sessionStorage.getItem("userid"), "local-dev-user");
}

{
   const windowLike = createWindow();
   windowLike.localStorage.setItem("userId", "real-user");
   const auth = loadAuthCompat(windowLike);

   const seeded = auth.ensureDevMockAuthInfo({ isDev: true, env: {} });

   assert.equal(seeded, false);
   assert.equal(auth.getCompatibleUserId(), "real-user");
}

{
   const windowLike = createWindow();
   const auth = loadAuthCompat(windowLike);

   const seeded = auth.ensureDevMockAuthInfo({
      isDev: true,
      env: { FS_SUPER_AGENT_MOCK_LOGIN: "0" },
   });

   assert.equal(seeded, false);
   assert.equal(auth.hasCompatibleAuthInfo(), false);
}

{
   const windowLike = createWindow();
   const auth = loadAuthCompat(windowLike);

   const seeded = auth.ensureDevMockAuthInfo({ isDev: false, env: {} });

   assert.equal(seeded, false);
   assert.equal(auth.hasCompatibleAuthInfo(), false);
}