// @vitest-environment node
// The registry half of MCP sync: which CLIs declare an MCP config file, and that the schema
// guards the path (sync writes to it) so a user clis.json cannot aim a write outside $HOME.

import { describe, expect, it } from 'vitest';
import { CliEntrySchema } from '../src/config/cli-registry/schema.js';
import { STOCK_CLIS } from '../src/config/cli-registry/stock.js';
import type { CliEntry } from '../src/config/cli-registry/types.js';

const claude = () => structuredClone(STOCK_CLIS.find((e) => (e.id as string) === 'claude')!) as CliEntry;

function withMcp(mcpConfig: unknown) {
  const e = claude();
  (e.capabilities as Record<string, unknown>).mcpConfig = mcpConfig;
  return CliEntrySchema.safeParse(e);
}

describe('capabilities.mcpConfig', () => {
  it('is declared by exactly the CLIs whose format is verified', () => {
    const declared = STOCK_CLIS.filter((e) => e.capabilities.mcpConfig).map((e) => e.id as string);
    expect(declared.sort()).toEqual(['antigravity', 'claude', 'codex', 'gemini', 'opencode']);
  });

  it('every stock declaration passes the schema, with a distinct file per CLI', () => {
    for (const e of STOCK_CLIS) expect(CliEntrySchema.safeParse(e).success, e.id as string).toBe(true);
    const paths = STOCK_CLIS.flatMap((e) => (e.capabilities.mcpConfig ? [e.capabilities.mcpConfig.path] : []));
    expect(new Set(paths).size).toBe(paths.length);
  });

  it('accepts a home-relative path with a known format', () => {
    expect(withMcp({ path: '.tool/mcp.json', format: 'claude-json' }).success).toBe(true);
  });

  it("declares each CLI's own relocation env var, and none for antigravity (HOME only)", () => {
    const reloc = Object.fromEntries(
      STOCK_CLIS.flatMap((e) =>
        e.capabilities.mcpConfig ? [[e.id as string, e.capabilities.mcpConfig.relocation]] : []
      )
    );
    expect(reloc).toEqual({
      claude: { envVar: 'CLAUDE_CONFIG_DIR', path: '.claude.json' },
      opencode: { envVar: 'XDG_CONFIG_HOME', path: 'opencode/opencode.json' },
      codex: { envVar: 'CODEX_HOME', path: 'config.toml' },
      gemini: { envVar: 'GEMINI_CLI_HOME', path: '.gemini/settings.json' },
      antigravity: undefined,
    });
  });

  it('accepts a relocation with an env var name and a relative path', () => {
    const value = { path: '.a/mcp.json', format: 'claude-json', relocation: { envVar: 'A_HOME', path: 'mcp.json' } };
    expect(withMcp(value).success).toBe(true);
  });

  it.each([
    ['parent traversal', { path: '../evil.json', format: 'claude-json' }],
    ['nested traversal', { path: '.a/../../evil.json', format: 'claude-json' }],
    ['absolute path', { path: '/etc/cron.d/x', format: 'claude-json' }],
    ['shell metacharacters', { path: '.a;rm -rf', format: 'claude-json' }],
    ['unknown format', { path: '.a/mcp.json', format: 'yaml' }],
    ['extra key', { path: '.a/mcp.json', format: 'claude-json', mode: 'rw' }],
    [
      'relocation path traversal',
      { path: '.a/mcp.json', format: 'claude-json', relocation: { envVar: 'A_HOME', path: '../x.json' } },
    ],
    [
      'relocation absolute path',
      { path: '.a/mcp.json', format: 'claude-json', relocation: { envVar: 'A_HOME', path: '/etc/x.json' } },
    ],
    [
      'relocation env var that is not a name',
      { path: '.a/mcp.json', format: 'claude-json', relocation: { envVar: 'a-home', path: 'x.json' } },
    ],
  ])('rejects %s', (_label, value) => {
    expect(withMcp(value).success).toBe(false);
  });
});