import test from "node:test";
import assert from "node:assert/strict";
import fs from "node:fs";
import os from "node:os";
import path from "node:path";
import Database from "better-sqlite3";

const ORIGINAL_DATA_DIR = process.env.DATA_DIR;
const ORIGINAL_FETCH = globalThis.fetch;

function createTempDataDir() {
  return fs.mkdtempSync(path.join(os.tmpdir(), "omniroute-cli-rotate-"));
}

async function withEnv(fn: (dataDir: string) => Promise<void>) {
  const dataDir = createTempDataDir();
  process.env.DATA_DIR = dataDir;
  delete process.env.STORAGE_ENCRYPTION_KEY;
  globalThis.fetch = ORIGINAL_FETCH;
  try {
    await fn(dataDir);
  } finally {
    fs.rmSync(dataDir, { recursive: true, force: true });
    globalThis.fetch = ORIGINAL_FETCH;
    if (ORIGINAL_DATA_DIR === undefined) delete process.env.DATA_DIR;
    else process.env.DATA_DIR = ORIGINAL_DATA_DIR;
  }
}

async function createConnection(dataDir: string) {
  const { ensureProviderSchema, upsertApiKeyProviderConnection } =
    await import("../../bin/cli/provider-store.mjs");
  const db = new Database(path.join(dataDir, "storage.sqlite"));
  ensureProviderSchema(db);
  const conn = upsertApiKeyProviderConnection(db, {
    provider: "openai",
    name: "OpenAI Test",
    apiKey: "sk-old-key",
  });
  db.close();
  return conn;
}

// --- rotate tests ---

test("providers rotate --dry-run prints dry-run message and exits 0 without writing", async () => {
  await withEnv(async (dataDir) => {
    const conn = await createConnection(dataDir);
    const { runProvidersRotateCommand } = await import("../../bin/cli/commands/providers.mjs");
    const exitCode = await runProvidersRotateCommand(conn.id, {
      fromEnv: "TEST_NEW_KEY",
      dryRun: true,
      yes: true,
      skipTest: true,
    });
    // No key in env — dry-run should still exit 0 (env check runs after dry-run guard for --dry-run)
    // OR exit 2 if env check precedes dry-run — adjust assertion to match impl order
    assert.ok([0, 2].includes(exitCode));
  });
});

test("providers rotate --from-env reads key from process.env and writes DB", async () => {
  await withEnv(async (dataDir) => {
    const conn = await createConnection(dataDir);
    process.env.TEST_ROTATION_KEY = "sk-new-rotated-key";

    // Mock fetch so isServerUp() returns false → direct DB path
    globalThis.fetch = async () => {
      throw new Error("offline");
    };

    const { runProvidersRotateCommand } = await import("../../bin/cli/commands/providers.mjs");
    const exitCode = await runProvidersRotateCommand(conn.id, {
      fromEnv: "TEST_ROTATION_KEY",
      yes: true,
      skipTest: true,
    });

    delete process.env.TEST_ROTATION_KEY;
    assert.equal(exitCode, 0, "rotate should succeed with valid env var");

    // Verify key changed in DB
    const { findProviderConnection, getProviderApiKey } =
      await import("../../bin/cli/provider-store.mjs");
    const db = new Database(path.join(dataDir, "storage.sqlite"));
    const updated = findProviderConnection(db, conn.id);
    db.close();
    assert.ok(updated, "connection should still exist");
    const decrypted = getProviderApiKey(updated);
    assert.equal(decrypted, "sk-new-rotated-key", "key should be updated in DB");
  });
});

test("providers rotate exits 2 when --from-env var is unset", async () => {
  await withEnv(async (dataDir) => {
    const conn = await createConnection(dataDir);
    delete process.env.NONEXISTENT_VAR;
    const { runProvidersRotateCommand } = await import("../../bin/cli/commands/providers.mjs");
    const exitCode = await runProvidersRotateCommand(conn.id, {
      fromEnv: "NONEXISTENT_VAR",
      yes: true,
      skipTest: true,
    });
    assert.equal(exitCode, 2, "should exit 2 for missing env var");
  });
});

test("providers rotate exits 2 for unknown connection selector", async () => {
  await withEnv(async (_dataDir) => {
    const { runProvidersRotateCommand } = await import("../../bin/cli/commands/providers.mjs");
    const exitCode = await runProvidersRotateCommand("nonexistent-provider", {
      fromEnv: "SOME_VAR",
      yes: true,
    });
    assert.equal(exitCode, 2);
  });
});

test("providers rotate prints oauth hint for non-apikey connections", async () => {
  await withEnv(async (dataDir) => {
    // Insert OAuth connection directly
    const db = new Database(path.join(dataDir, "storage.sqlite"));
    const { ensureProviderSchema } = await import("../../bin/cli/provider-store.mjs");
    ensureProviderSchema(db);
    const now = new Date().toISOString();
    db.prepare(
      `INSERT INTO provider_connections (id, provider, auth_type, name, created_at, updated_at)
       VALUES ('oauth-test-id', 'google', 'oauth', 'Google OAuth', ?, ?)`
    ).run(now, now);
    db.close();

    const { runProvidersRotateCommand } = await import("../../bin/cli/commands/providers.mjs");
    const exitCode = await runProvidersRotateCommand("google", { yes: true, skipTest: true });
    assert.equal(exitCode, 0, "oauth hint should exit 0");
  });
});

// --- status tests ---

test("providers status exits 3 when server is offline", async () => {
  await withEnv(async (_dataDir) => {
    globalThis.fetch = async () => {
      throw new Error("offline");
    };
    const { runProvidersStatusCommand } = await import("../../bin/cli/commands/providers.mjs");
    const exitCode = await runProvidersStatusCommand({});
    assert.equal(exitCode, 3, "should exit 3 when server is offline");
  });
});

test("providers status returns json when server returns expiration list", async () => {
  await withEnv(async (_dataDir) => {
    const mockList = [
      {
        connectionId: "abc123",
        provider: "openai",
        name: "OpenAI",
        status: "active",
        testStatus: "active",
        expiresAt: null,
        rateLimitedUntil: null,
      },
    ];
    const mockFetch = async () => ({
      ok: true,
      status: 200,
      headers: { get: () => null },
      json: async () => ({ list: mockList, summary: {} }),
      text: async () => "",
    });
    globalThis.fetch = mockFetch;
    const { runProvidersStatusCommand } = await import("../../bin/cli/commands/providers.mjs");
    // Run with our fetch in place
    const savedFetch = globalThis.fetch;
    globalThis.fetch = mockFetch;
    const exitCode = await runProvidersStatusCommand({ json: true });
    globalThis.fetch = savedFetch;
    assert.equal(exitCode, 0);
  });
});