/**
 * T5 — env-detection helpers in resolveAIOptions.
 *
 * These tests exercise the exported pure helpers (groupReadyByProvider,
 * findEnvKeyTypos) with hermetic env injections. The resolveAIOptions
 * orchestration itself is exercised end-to-end via T12's
 * test/e2e/init-fresh-pglite.test.ts (PTY-based, real CLI).
 *
 * Per CLAUDE.md test isolation rules: env mutations would normally need
 * `withEnv`, but these helpers accept env as an argument — purer DI, no
 * process.env touched, no quarantine needed.
 */

import { describe, test, expect } from 'bun:test';
import { groupReadyByProvider, findEnvKeyTypos } from '../src/commands/init.ts';

describe('groupReadyByProvider — embedding touchpoint', () => {
  test('OPENAI_API_KEY alone → openai is ready', async () => {
    const got = await groupReadyByProvider('embedding', { OPENAI_API_KEY: 'sk-test' });
    expect(got.map(p => p.recipeId)).toContain('openai');
  });

  test('VOYAGE_API_KEY alone → voyage is ready', async () => {
    const got = await groupReadyByProvider('embedding', { VOYAGE_API_KEY: 'pa-test' });
    expect(got.map(p => p.recipeId)).toContain('voyage');
  });

  test('ZEROENTROPY_API_KEY alone → zeroentropyai is ready', async () => {
    const got = await groupReadyByProvider('embedding', { ZEROENTROPY_API_KEY: 'ze-test' });
    expect(got.map(p => p.recipeId)).toContain('zeroentropyai');
  });

  test('OPENAI_API_KEY + VOYAGE_API_KEY → both providers in ready list', async () => {
    const got = await groupReadyByProvider('embedding', {
      OPENAI_API_KEY: 'sk-test',
      VOYAGE_API_KEY: 'pa-test',
    });
    const ids = got.map(p => p.recipeId);
    expect(ids).toContain('openai');
    expect(ids).toContain('voyage');
  });

  test('each provider appears at most once (codex finding #2 dedup)', async () => {
    const got = await groupReadyByProvider('embedding', {
      OPENAI_API_KEY: 'sk-test',
      VOYAGE_API_KEY: 'pa-test',
      ZEROENTROPY_API_KEY: 'ze-test',
    });
    const ids = got.map(p => p.recipeId);
    const dupes = ids.filter((id, i) => ids.indexOf(id) !== i);
    expect(dupes).toEqual([]);
  });

  test('empty-string env var counts as not set', async () => {
    const got = await groupReadyByProvider('embedding', { OPENAI_API_KEY: '' });
    expect(got.map(p => p.recipeId)).not.toContain('openai');
  });

  test('Anthropic alone → not in embedding ready (no embedding touchpoint on anthropic recipe)', async () => {
    const got = await groupReadyByProvider('embedding', { ANTHROPIC_API_KEY: 'sk-ant-test' });
    expect(got.map(p => p.recipeId)).not.toContain('anthropic');
  });

  test('regression: bug reporter scenario — only OPENAI_API_KEY set → openai picked, ZE not present', async () => {
    const got = await groupReadyByProvider('embedding', { OPENAI_API_KEY: 'sk-test' });
    const ids = got.map(p => p.recipeId);
    expect(ids).toContain('openai');
    expect(ids).not.toContain('zeroentropyai');
  });
});

describe('groupReadyByProvider — chat touchpoint', () => {
  test('OPENAI_API_KEY → openai chat ready', async () => {
    const got = await groupReadyByProvider('chat', { OPENAI_API_KEY: 'sk-test' });
    expect(got.map(p => p.recipeId)).toContain('openai');
  });

  test('ZEROENTROPY_API_KEY alone → no chat ready (ZE has no chat touchpoint)', async () => {
    const got = await groupReadyByProvider('chat', { ZEROENTROPY_API_KEY: 'ze-test' });
    expect(got.map(p => p.recipeId)).not.toContain('zeroentropyai');
  });

  test('ANTHROPIC_API_KEY → anthropic chat ready', async () => {
    const got = await groupReadyByProvider('chat', { ANTHROPIC_API_KEY: 'sk-ant-test' });
    expect(got.map(p => p.recipeId)).toContain('anthropic');
  });
});

describe('groupReadyByProvider — expansion touchpoint', () => {
  test('OPENAI_API_KEY → openai expansion ready', async () => {
    const got = await groupReadyByProvider('expansion', { OPENAI_API_KEY: 'sk-test' });
    expect(got.map(p => p.recipeId)).toContain('openai');
  });

  test('VOYAGE_API_KEY alone → no expansion ready (Voyage is embedding-only)', async () => {
    const got = await groupReadyByProvider('expansion', { VOYAGE_API_KEY: 'pa-test' });
    expect(got.map(p => p.recipeId)).not.toContain('voyage');
  });
});

describe('findEnvKeyTypos', () => {
  test('detects OPENAPI_API_KEY → OPENAI_API_KEY', async () => {
    const got = await findEnvKeyTypos({ OPENAPI_API_KEY: 'sk-test' });
    expect(got.length).toBeGreaterThan(0);
    const openaiTypo = got.find(t => t.userSet === 'OPENAPI_API_KEY');
    expect(openaiTypo).toBeDefined();
    expect(openaiTypo!.suggested).toBe('OPENAI_API_KEY');
  });

  test('no typo when canonical name is also set (false-positive guard)', async () => {
    const got = await findEnvKeyTypos({
      OPENAPI_API_KEY: 'sk-test',
      OPENAI_API_KEY: 'sk-real',
    });
    // OPENAPI_API_KEY → OPENAI_API_KEY suggestion suppressed
    expect(got.find(t => t.userSet === 'OPENAPI_API_KEY')).toBeUndefined();
  });

  test('empty env returns no typos', async () => {
    const got = await findEnvKeyTypos({});
    expect(got).toEqual([]);
  });

  test('canonical name set produces no typo for itself', async () => {
    const got = await findEnvKeyTypos({ OPENAI_API_KEY: 'sk-test' });
    expect(got.find(t => t.userSet === 'OPENAI_API_KEY')).toBeUndefined();
  });

  test('non-API-KEY shaped vars ignored (HOME, PATH, etc.)', async () => {
    const got = await findEnvKeyTypos({ HOME: '/home/user', PATH: '/usr/bin' });
    expect(got).toEqual([]);
  });

  test('empty-string env var skipped (no suggestion)', async () => {
    const got = await findEnvKeyTypos({ OPENAPI_API_KEY: '' });
    expect(got.find(t => t.userSet === 'OPENAPI_API_KEY')).toBeUndefined();
  });

  test('detects VOYAG_API_KEY → VOYAGE_API_KEY (1 char delete)', async () => {
    const got = await findEnvKeyTypos({ VOYAG_API_KEY: 'pa-test' });
    const v = got.find(t => t.userSet === 'VOYAG_API_KEY');
    expect(v).toBeDefined();
    expect(v!.suggested).toBe('VOYAGE_API_KEY');
  });

  test('very-different name returns no typo (far beyond edit distance)', async () => {
    const got = await findEnvKeyTypos({ COMPLETELY_UNRELATED_KEY: 'foo' });
    // Should not match any canonical via Levenshtein ≤ 3.
    expect(got.find(t => t.userSet === 'COMPLETELY_UNRELATED_KEY')).toBeUndefined();
  });
});