// src/commands/registry.js
//
// Single source of truth for every bot command.
//
// Both dispatch paths in index.js consume this registry:
//   - Webex chat: framework.hears(/.*/, …) parses the text, then runs the
//     entry whose name (or alias) matches the first token.
//   - HTTP API: app.get('/:command', …) looks up the same registry and runs
//     the entry's handler against a captured-output mock bot.
//
// Adding a new command means appending one entry below. Both Webex and HTTP
// pick it up automatically (subject to `mutating` / `http` flags).

import { handleHelp } from './help.js';
import { handleAvStatus } from './avStatus.js';
import { handleVoiceStatus } from './voiceStatus.js';
import { handleWanStatus } from './wanStatus.js';
import { handlePhoneDiag } from './phoneDiag.js';
import { handleDectDiag } from './dectDiag.js';
import { handleProvisionDect } from './provisionDect.js';
import { handleWoHistory } from './woHistory.js';
import { handleWoSummary } from './woSummary.js';
import { handleWoAttachments } from './woAttachments.js';
import { handleJiraHistory } from './jiraHistory.js';
import { handleJiraTicket } from './jiraTicket.js';
import { handleJiraPoll } from './jiraPoll.js';
import { handleProvisionVc } from './vcProvision.js';
import { handleVcMonitor } from './vcMonitor.js';
import { handleOffboardUser } from './offboardUser.js';
import { handleWebexHost } from './webexHost.js';
import { handleVoiceDiag } from './voiceDiag.js';
import { handleBulkAvStatusCSV } from './bulkAvStatusCSV.js';
import { handleBulkAvSwitchCSV } from './bulkAvSwitchCSV.js';
import { handleTestDevicesByModel } from './testDevicesByModel.js';
import { handleCallTest } from './callTest.js';
import { handleCallReport } from './callReport.js';

/**
 * Each entry:
 *   - name:      canonical name (lowercase, no leading slash).
 *   - aliases:   additional names that route to the same handler.
 *   - handler:   async (bot, trigger) => void
 *   - mutating:  when true, the HTTP /:command path requires HTTP_API_TOKEN.
 *   - http:      defaults to true. Set false for commands that only make
 *                sense over Webex chat (e.g. `help`).
 */
export const commands = [
  { name: 'help', handler: handleHelp, mutating: false, http: false },

  { name: 'avstatus', aliases: ['wostatus'], handler: handleAvStatus, mutating: false },
  { name: 'voicestatus', handler: handleVoiceStatus, mutating: false },
  { name: 'wanstatus', handler: handleWanStatus, mutating: false },
  { name: 'phonediag', handler: handlePhoneDiag, mutating: false },
  // /dectdiag — full DECT base dump via the on-prem relay + chat-only
  // reboot/factory-reset cards. Read path is non-mutating; card submits
  // only fire over Webex (see commands/dectDiag.js).
  { name: 'dectdiag', aliases: ['dect'], handler: handleDectDiag, mutating: false },
  // /voicediag reads per-user Webex Calling features via
  // /v1/people/{id}/features/* and offers per-issue adaptive-card
  // remediation. Reads are non-mutating but the confirm buttons on
  // the cards perform PUTs, so the HTTP path is gated
  // (mutating: true). See commands/voiceDiag.js + services/voiceDiag/
  // for the full behavior contract + required scopes.
  { name: 'voicediag', handler: handleVoiceDiag, mutating: true },
  { name: 'callreport', aliases: ['voicereport'], handler: handleCallReport, mutating: false },
  { name: 'wohistory', handler: handleWoHistory, mutating: false },
  { name: 'wosummary', handler: handleWoSummary, mutating: false },
  { name: 'woattachments', handler: handleWoAttachments, mutating: false },
  { name: 'jirahistory', handler: handleJiraHistory, mutating: false },
  { name: 'jiraticket', handler: handleJiraTicket, mutating: false },
  // /jirapoll [prime] — trigger the hourly Jira poller on demand. Writes
  // Jira comments + labels, so mutating: true (HTTP path gated by
  // HTTP_API_TOKEN). See commands/jiraPoll.js for the behavior contract.
  { name: 'jirapoll', aliases: ['pollnow'], handler: handleJiraPoll, mutating: true },

  { name: 'provision-dect', aliases: ['provisiondect'], handler: handleProvisionDect, mutating: true },
  { name: 'provision-vc',   aliases: ['vcprovision'],   handler: handleProvisionVc,   mutating: true },
  { name: 'vcmonitor',      handler: handleVcMonitor,      mutating: true },
  // /calltest places real Twilio PSTN calls (store AA path or direct dial).
  { name: 'calltest',       handler: handleCallTest,       mutating: true },
  { name: 'offboarduser',   handler: handleOffboardUser,   mutating: true },
  { name: 'webexhost',      handler: handleWebexHost,      mutating: true },
  // bulkavstatuscsv delivers a CSV attachment via BotClient.sendWithAttachment,
  // which requires a Webex roomId. The HTTP mock trigger has no roomId, so
  // the command is chat-only; the runtime guard in the handler backstops this.
  { name: 'bulkavstatuscsv', handler: handleBulkAvStatusCSV, mutating: true, http: false },
  { name: 'bulkavswitchcsv', handler: handleBulkAvSwitchCSV, mutating: true },
  { name: 'devicesbymodel',  handler: handleTestDevicesByModel, mutating: true },
];

const byName = new Map();
for (const cmd of commands) {
  const all = [cmd.name, ...(cmd.aliases || [])].map(n => n.toLowerCase());
  for (const key of all) {
    if (byName.has(key)) {
      // Fail loud on misconfiguration — silent alias overwrite is the kind of
      // drift this registry is designed to prevent.
      throw new Error(`Duplicate command registration: "${key}"`);
    }
    byName.set(key, cmd);
  }
}

/**
 * Look up a command by canonical name or alias. Case-insensitive.
 * @returns {{name: string, handler: Function, mutating: boolean, http?: boolean, aliases?: string[]} | null}
 */
export function getCommand(name) {
  if (!name) return null;
  return byName.get(String(name).toLowerCase().trim()) || null;
}

/** Names + aliases of commands exposed over HTTP (used for /:command 404 hints). */
export const ALL_HTTP_COMMAND_KEYS = (() => {
  const keys = [];
  for (const cmd of commands) {
    if (cmd.http === false) continue;
    keys.push(cmd.name, ...(cmd.aliases || []));
  }
  return keys.sort();
})();

/** Set of names + aliases that require HTTP_API_TOKEN on the HTTP path. */
export const MUTATING_COMMAND_KEYS = (() => {
  const keys = new Set();
  for (const cmd of commands) {
    if (!cmd.mutating) continue;
    keys.add(cmd.name);
    for (const a of cmd.aliases || []) keys.add(a);
  }
  return keys;
})();