import { configDir, loadBusiness } from '../../business/src/index.mjs';
import { checkProject, initProject, ProjectError } from '../../project/src/index.mjs';
import { loadSystem, rolesDir } from './config.mjs';
import { CliError } from './errors.mjs';
import { shortId } from './format.mjs';
import { parseArgs } from './thread.mjs';
import { refuseInsideAgent } from './transport.mjs';

export const PROJECT_USAGE = 'mosaic project init|check <business> <project>';
// Row 128 (#1622): create and list work on the bus record (project.create, project.list); init
// and check above work on the repository on disk and never contact the bus.
export const PROJECT_BUS_USAGE = [
  'mosaic project create <name> [--repo <repo>] [--business <id>]',
  'mosaic project list [--business <id>] [--json]',
].join('\n  ');

export async function projectBusCommand(args, io, callFor) {
  const [sub, ...rest] = args;
  const parsed = parseArgs(rest, PROJECT_BUS_USAGE, sub === 'create'
    ? { values: ['--repo', '--business'] }
    : { flags: ['--json'], values: ['--business'] });
  if (parsed.positional.length !== (sub === 'create' ? 1 : 0))
    throw new CliError(`project ${sub} takes ${sub === 'create' ? 'one name' : 'no arguments'}\n${PROJECT_BUS_USAGE}`, 4);
  const call = callFor(parsed);
  if (sub === 'create') {
    const [name] = parsed.positional;
    const made = await call('project.create', { name, ...(parsed.values['--repo'] === undefined ? {} : { repo: parsed.values['--repo'] }) });
    return io.stdout.write(`created project ${name}  id ${made.id}\n`);
  }
  const projects = await call('project.list');
  if (parsed.flags.has('--json')) return io.stdout.write(`${JSON.stringify(projects, null, 2)}\n`);
  io.stdout.write(projects.length === 0 ? 'no projects\n' : projects.map(p => `${p.name}  ${p.repo ?? '-'}  ${shortId(p.id)}\n`).join(''));
}

export async function projectCommand(args, io, deps = {}) {
  if (args.length !== 3 || !['init', 'check'].includes(args[0]) || args.some(arg => arg.startsWith('--')))
    throw new CliError(PROJECT_USAGE, 4);
  const [verb, id, project] = args;
  if (verb === 'init') refuseInsideAgent(io.env);
  try {
    const system = deps.system ?? loadSystem({ env: io.env });
    const business = loadBusiness(id, { dir: configDir(io.env), rolesDir: rolesDir(io.env) });
    const context = { business, project, dataRoot: system.dataRoot };
    if (verb === 'init') {
      const result = await initProject(context);
      io.stdout.write(`initialized ${result.repo}\ncommit ${result.commit}\n`);
    } else {
      const result = await checkProject(context);
      if (!result.ok) throw new CliError(result.problems.join('\n'), 2);
      io.stdout.write(`checked ${result.repo}: valid\n`);
    }
  } catch (error) {
    if (error instanceof CliError) throw error;
    throw new CliError(error.message, error instanceof ProjectError ? 2 : 3);
  }
}