// services/jiraPoller/enrichmentRules.js
// Rule-based enrichment planner for the hourly Jira poller.

export const COMM_SERVICES_COMPONENT = 'Communication Services';

export const CHECK_IDS = {
  phonestatus: 'phonestatus',
  callreport: 'callreport',
  avstatus: 'avstatus',
};

const CALL_QUALITY_PATTERNS = [
  /\bgarbled\b/i,
  /\bstatic(?:y|s)?\b/i,
  /\bchoppy\b/i,
  /\bmuffled\b/i,
  /\bcan(?:'t| ?not) connect\b/i,
  /\bnot connecting\b/i,
  /\bcan(?:'t| ?not) call\b/i,
  /\bno dial tone\b/i,
  /\bone[- ]way\b/i,
  /\bdropped calls?\b/i,
  /\bcall quality\b/i,
  /\bbad audio\b/i,
  /\bpoor audio\b/i,
  /\bvoice quality\b/i,
  /\bno audio\b/i,
  /\bdead air\b/i,
  /\bintermittent\b/i,
];

const SPAM_PATTERNS = [
  /\bspam\b/i,
  /\brobocall/i,
  /\brobo[- ]?call/i,
  /\bnuisance calls?\b/i,
  /\bunwanted calls?\b/i,
  /\bauto[- ]?dial/i,
  /\btelemarketer/i,
  /\bprank calls?\b/i,
  /\bharassing calls?\b/i,
];

function hasComponent(components, name) {
  return (components || []).some((c) => c?.name === name);
}

function ticketText(ticket) {
  const summary = ticket?.summary || '';
  const description = ticket?.description || '';
  return `${summary}\n${description}`.toLowerCase();
}

function matchesAny(text, patterns) {
  return patterns.some((re) => re.test(text));
}

/**
 * Extract store number from summary text (e.g. "Store 2477 - ...").
 * @param {string} summary
 * @returns {string|null}
 */
export function extractStoreFromSummary(summary) {
  if (!summary) return null;
  const m = String(summary).match(/\bstore\s+(\d{2,6})\b/i);
  return m ? m[1] : null;
}

/**
 * @param {object} ticket
 * @param {string} ticket.summary
 * @param {string} [ticket.description]
 * @param {Array<{name?: string}>} [ticket.components]
 * @param {object} classification from classifyTicket()
 * @param {string|null} classification.storeNum
 * @param {'phone'|'av'|'skip'} classification.kind
 * @returns {{
 *   checks: string[],
 *   matchedRules: string[],
 *   storeNum: string|null,
 *   skip: boolean,
 *   skipReason?: string,
 * }}
 */
export function resolveEnrichmentPlan(ticket, classification) {
  const text = ticketText(ticket);
  const isCommServices = hasComponent(ticket?.components, COMM_SERVICES_COMPONENT);
  const callQuality = isCommServices && matchesAny(text, CALL_QUALITY_PATTERNS);
  const spam = isCommServices && matchesAny(text, SPAM_PATTERNS);

  let storeNum = classification?.storeNum || null;
  if (!storeNum && (callQuality || spam)) {
    storeNum = extractStoreFromSummary(ticket?.summary);
  }

  const matchedRules = [];
  if (callQuality) matchedRules.push('comm-call-quality');
  if (spam) matchedRules.push('comm-spam');

  if (callQuality || spam) {
    if (!storeNum) {
      return {
        checks: [],
        matchedRules,
        storeNum: null,
        skip: true,
        skipReason: 'Communication Services symptom matched but no store number found',
      };
    }
    const checks = [];
    if (callQuality) {
      checks.push(CHECK_IDS.phonestatus, CHECK_IDS.callreport);
    } else if (spam) {
      checks.push(CHECK_IDS.callreport);
    }
    return { checks: [...new Set(checks)], matchedRules, storeNum, skip: false };
  }

  if (classification?.kind === 'skip' || !storeNum) {
    return {
      checks: [],
      matchedRules: [],
      storeNum: null,
      skip: true,
      skipReason: classification?.reason || 'no store number',
    };
  }

  if (classification.kind === 'phone') {
    return {
      checks: [CHECK_IDS.phonestatus],
      matchedRules: ['default-phone'],
      storeNum,
      skip: false,
    };
  }

  if (classification.kind === 'av') {
    return {
      checks: [CHECK_IDS.avstatus],
      matchedRules: ['default-av'],
      storeNum,
      skip: false,
    };
  }

  return {
    checks: [],
    matchedRules: [],
    storeNum,
    skip: true,
    skipReason: `unsupported kind: ${classification?.kind}`,
  };
}