import { describe, expect, test } from 'bun:test';
import { serveConfigContent, affordancesPath } from './serve-env';

// The config shape is a contract with the OpenCode binary, and the cost of a wrong key name is SILENCE:
// no error, no warning, just an agent that never sees a skill. So the keys are asserted literally.

describe('serveConfigContent', () => {
  test('names skills.paths and instructions exactly', () => {
    const parsed = JSON.parse(serveConfigContent(['/a/skills', '/b/skills'], ['/tmp/aff.md'], 'PROMPT'));
    expect(parsed.skills).toEqual({ paths: ['/a/skills', '/b/skills'] });
    expect(parsed.instructions).toEqual(['/tmp/aff.md']);
    // The agent is what a session is created with; a config without it silently falls back to
    // OpenCode's coding-agent framing, which is the bug this whole file exists to stop.
    expect(parsed.default_agent).toBe('officer');
    expect(parsed.agent.officer.prompt).toBe('PROMPT');
    expect(parsed.agent.officer.mode).toBe('primary');
  });

  // An empty array is not the same as an absent key: `skills: {paths: []}` is a claim that there are none,
  // and merged over a config that sets some it would erase them.
  test('omits a key rather than sending it empty', () => {
    expect(JSON.parse(serveConfigContent([], [], 'P')).skills).toBeUndefined();
    expect(JSON.parse(serveConfigContent(['/a'], [], 'P')).skills).toEqual({ paths: ['/a'] });
  });

  test('is valid JSON for an env var — no newlines to be mangled by a shell', () => {
    expect(serveConfigContent(['/a/skills'], ['/tmp/aff.md'], 'P')).not.toContain('\n');
  });

  test('the affordances file sits beside the serve state, not in a home', () => {
    expect(affordancesPath('/data/opencode_server')).toBe('/data/opencode_server/officer-affordances.md');
  });
});