import Database from 'better-sqlite3';
import { SqlitePricingStore } from '../src/db/pricing-store';

describe('SqlitePricingStore', () => {
  it('seeds the default rate card and tiers when empty', () => {
    const store = new SqlitePricingStore(new Database(':memory:'));
    expect(store.getRateCard().endpoints.transform).toEqual({ kind: 'fixed', fixedCents: 4 });
    expect(store.getTiers().map((t) => t.id)).toEqual(['free', 'pro', 'business']);
  });

  it('seeds only once', () => {
    const db = new Database(':memory:');
    const first = new SqlitePricingStore(db);
    first.deleteEndpoint('transform');
    const second = new SqlitePricingStore(db);
    expect(second.getRateCard().endpoints.transform).toBeUndefined();
  });

  it('reseeds endpoints without reverting admin tier edits', () => {
    const db = new Database(':memory:');
    const first = new SqlitePricingStore(db);
    for (const id of Object.keys(first.getRateCard().endpoints)) {
      first.deleteEndpoint(id);
    }
    first.upsertTier({ id: 'pro', name: 'Pro', multiplier: 0.9, monthlyCreditCents: 1000 });
    const second = new SqlitePricingStore(db);
    expect(second.getRateCard().endpoints.transform).toBeDefined();
    expect(second.getTiers().find((t) => t.id === 'pro')?.multiplier).toBe(0.9);
  });

  it('upserts and deletes endpoints', () => {
    const store = new SqlitePricingStore(new Database(':memory:'));
    store.upsertEndpoint('experimental', { kind: 'variable', baseCents: 3, perKbCents: 2, perMbCents: 20 });
    expect(store.getRateCard().endpoints.experimental).toEqual({
      kind: 'variable',
      baseCents: 3,
      perKbCents: 2,
      perMbCents: 20,
    });
    store.deleteEndpoint('experimental');
    expect(store.getRateCard().endpoints.experimental).toBeUndefined();
  });

  it('upserts tiers including default rules, and deletes them', () => {
    const store = new SqlitePricingStore(new Database(':memory:'));
    store.upsertTier({
      id: 'edu',
      name: 'Education',
      multiplier: 0.4,
      monthlyCreditCents: 500,
      defaultRule: { kind: 'fixed', fixedCents: 6 },
    });
    expect(store.getTiers().find((t) => t.id === 'edu')?.defaultRule).toEqual({
      kind: 'fixed',
      fixedCents: 6,
    });
    store.upsertTier({ id: 'edu', name: 'Education', multiplier: 0.3, monthlyCreditCents: 500 });
    expect(store.getTiers().filter((t) => t.id === 'edu')).toHaveLength(1);
    expect(store.getTiers().find((t) => t.id === 'edu')?.multiplier).toBe(0.3);
    store.deleteTier('edu');
    expect(store.getTiers().find((t) => t.id === 'edu')).toBeUndefined();
  });
});