import process from 'node:process';

export const TEMPLATE_AGENT_ID = 'sin-github-issues';
export const TEMPLATE_AGENT_NAME = 'SIN-GitHub-Issues';
export const TEMPLATE_AGENT_DESCRIPTION = 'CEO Elite GitHub Operations Architect — orchestrates Projects V2, Issues, Wikis, Discussions, Gists, Security audits, PR Reviews, and public Showcase Ledger logging.';
export const TEMPLATE_AGENT_VERSION = '2026.03.22';
export const TEMPLATE_AGENT_DEFAULT_HOST = '127.0.0.1';
export const TEMPLATE_AGENT_DEFAULT_PORT = 46031;

export const TEMPLATE_AGENT_SKILLS = [
  {
    id: 'sin.github.health',
    name: 'Health',
    description: 'Check 2026 Elite GitHub Operations Architect readiness, model, and capabilities.',
  },
  {
    id: 'sin.github.app.routing.status',
    name: 'GitHub App Routing Status',
    description: 'Inspect the configured multi-app GitHub routing table, route paths, and secret readiness without exposing credentials.',
  },
  {
    id: 'sin.github.webhook.route',
    name: 'GitHub Webhook Route',
    description: 'Route GitHub webhook payloads to the correct SIN coder agent using installation.app_id, route path, and signature verification.',
  },
  {
    id: 'sin.github.issue.comment.as_app',
    name: 'Issue Comment As App',
    description: 'Generate the correct GitHub App JWT and installation token, then post an issue or PR comment as the matched bot identity.',
  },
  {
    id: 'sin.github.project.orchestrate',
    name: 'Project Orchestrate',
    description: 'Create and manage GitHub Projects V2 boards, link issues, and assign items.',
  },
  {
    id: 'sin.github.issue.manage',
    name: 'Issue Manage',
    description: 'Create, update, label, assign, milestone-link, or close GitHub issues and Epics.',
  },
  {
    id: 'sin.github.wiki.sync',
    name: 'Wiki Sync',
    description: 'Synchronize repository Wiki pages with project documentation updates.',
  },
  {
    id: 'sin.github.discussion.start',
    name: 'Discussion Start',
    description: 'Start or manage GitHub Discussions for architecture debates and design decisions.',
  },
  {
    id: 'sin.github.gist.publish',
    name: 'Gist Publish',
    description: 'Upload long logs, code snippets, or configs to GitHub Gists and return the URL.',
  },
  {
    id: 'sin.github.security.audit',
    name: 'Security Audit',
    description: 'Audit Dependabot alerts, configure CodeQL, and review active security advisories.',
  },
  {
    id: 'sin.github.pr.review',
    name: 'PR Review',
    description: 'Review Pull Requests for architectural compliance, security, performance, and test coverage. Auto-approve and merge if 100% pass.',
  },
  {
    id: 'sin.github.issue.pool.enqueue',
    name: 'Issue Pool Enqueue',
    description: 'Insert GitHub issue metadata into `sin_issues_pool` for Hermes/Team-Coding dispatch.',
  },
  {
    id: 'sin.github.ledger.log',
    name: 'Ledger Log',
    description: 'Publish an agent activity log or achievement to the public Delqhi/OpenSIN-Ledger showcase repository.',
  },
] as const;

export function resolveTemplateAgentConfig() {
  const host =
    process.env.SIN_GITHUB_ISSUES_HOST?.trim() ||
    (process.env.PORT ? '0.0.0.0' : process.env.HOST?.trim() || TEMPLATE_AGENT_DEFAULT_HOST);
  const port = parseInteger(process.env.SIN_GITHUB_ISSUES_PORT, parseInteger(process.env.PORT, TEMPLATE_AGENT_DEFAULT_PORT));
  const fallbackPublicHost = host === '0.0.0.0' ? '127.0.0.1' : host;
  const publicBaseUrl =
    process.env.SIN_GITHUB_ISSUES_PUBLIC_BASE_URL?.trim() ||
    (process.env.SPACE_HOST?.trim() ? `https://${process.env.SPACE_HOST.trim()}` : `http://${fallbackPublicHost}:${port}`);
  return { host, port, publicBaseUrl: publicBaseUrl.replace(/\/+$/, '') };
}

export function buildAgentCard(baseUrl: string) {
  const normalizedBaseUrl = baseUrl.replace(/\/+$/, '');
  const rpcUrl = `${normalizedBaseUrl}/a2a/v1`;
  return {
    name: TEMPLATE_AGENT_NAME,
    description: TEMPLATE_AGENT_DESCRIPTION,
    version: TEMPLATE_AGENT_VERSION,
    documentationUrl: normalizedBaseUrl,
    url: rpcUrl,
    capabilities: { streaming: false, pushNotifications: false },
    defaultInputModes: ['text/plain', 'application/json'],
    defaultOutputModes: ['text/plain', 'application/json'],
    skills: [...TEMPLATE_AGENT_SKILLS],
    supportedInterfaces: [{ url: rpcUrl, protocolBinding: 'JSONRPC', protocolVersion: '1.0' }],
  };
}

function parseInteger(input: string | undefined, fallback: number) {
  const parsed = Number.parseInt(String(input || '').trim(), 10);
  return Number.isFinite(parsed) ? parsed : fallback;
}