import assert from "node:assert/strict";
import { resolveRedisConfig } from "../src/config.js";

/**
 * Test: Redis ingestion consumers are default-off and do not load the Redis
 * module unless an explicit opt-in flag is set. Legacy URLs must not inherit
 * from the generic REDIS_URL.
 *
 * Uses the pure resolveRedisConfig resolver with synthetic env objects — no
 * module-cache hacks needed.
 */

// ── 1. Default-off: no Redis flags set ──────────────────────────────────────
{
  const rc = resolveRedisConfig({});

  assert.equal(
    rc.growEventsRedisEnabled,
    false,
    "GROW_EVENTS_REDIS_ENABLED must default to false",
  );
  assert.equal(
    rc.legacyServiceRedisEnabled,
    false,
    "LEGACY_SERVICE_REDIS_ENABLED must default to false",
  );
}

// ── 2. Legacy URLs must NOT inherit from generic REDIS_URL ──────────────────
{
  // Set ONLY the generic REDIS_URL — legacy URLs must not pick it up.
  const rc = resolveRedisConfig({ REDIS_URL: "redis://legacy-generic:6379" });

  assert.equal(
    rc.interviewRedisUrl,
    "",
    "interviewRedisUrl must NOT inherit from generic REDIS_URL",
  );
  assert.equal(
    rc.roleplayRedisUrl,
    "",
    "roleplayRedisUrl must NOT inherit from generic REDIS_URL",
  );
  assert.equal(
    rc.resumeRedisUrl,
    "",
    "resumeRedisUrl must NOT inherit from generic REDIS_URL",
  );
  assert.equal(
    rc.coursesRedisUrl,
    "",
    "coursesRedisUrl must NOT inherit from generic REDIS_URL",
  );
}

// ── 3. Legacy URLs must NOT inherit from GROW_EVENTS_REDIS_URL ───────────────
{
  const rc = resolveRedisConfig({ GROW_EVENTS_REDIS_URL: "redis://canonical:6379" });

  assert.equal(
    rc.interviewRedisUrl,
    "",
    "interviewRedisUrl must NOT inherit from GROW_EVENTS_REDIS_URL",
  );
  assert.equal(rc.growEventsRedisUrl, "redis://canonical:6379", "canonical URL resolves from its own var");
}

// ── 4. Explicit opt-in flags are respected ──────────────────────────────────
{
  const rc = resolveRedisConfig({ GROW_EVENTS_REDIS_ENABLED: "true" });

  assert.equal(
    rc.growEventsRedisEnabled,
    true,
    "GROW_EVENTS_REDIS_ENABLED=true must be respected",
  );
  assert.equal(
    rc.legacyServiceRedisEnabled,
    false,
    "legacy must stay off when only canonical flag is set",
  );
}

// ── 5. Legacy opt-in flag works independently ───────────────────────────────
{
  const rc = resolveRedisConfig({
    LEGACY_SERVICE_REDIS_ENABLED: "true",
    INTERVIEW_REDIS_URL: "redis://interview:6379",
  });

  assert.equal(rc.legacyServiceRedisEnabled, true, "LEGACY_SERVICE_REDIS_ENABLED=true must be respected");
  assert.equal(rc.growEventsRedisEnabled, false, "canonical must stay off when only legacy flag is set");
  assert.equal(rc.interviewRedisUrl, "redis://interview:6379", "explicit interview URL resolves");
}

// ── 6. Explicit legacy URLs resolve from their own vars ──────────────────────
{
  const rc = resolveRedisConfig({
    INTERVIEW_REDIS_URL: "redis://i:6379",
    ROLEPLAY_REDIS_URL: "redis://r:6379",
    RESUME_REDIS_URL: "redis://re:6379",
    COURSES_REDIS_URL: "redis://c:6379",
  });

  assert.equal(rc.interviewRedisUrl, "redis://i:6379");
  assert.equal(rc.roleplayRedisUrl, "redis://r:6379");
  assert.equal(rc.resumeRedisUrl, "redis://re:6379");
  assert.equal(rc.coursesRedisUrl, "redis://c:6379");
}

console.log("redis-gating tests passed");
process.exit(0);