#!/usr/bin/env node

// inject-okr-context.mjs
// Event: UserPromptSubmit
// Purpose: Inject the core OKR organization context from .claude/okr.local.md
// (or the home org profile) plus ONE pointer to the second-brain index.md.
// Cycle/history/context retrieval is on-demand via the okr-second-brain-search
// skill — no longer pre-injected here. Zero npm dependencies. Target: <50ms.

import { readFileSync, existsSync } from 'node:fs';
import { join } from 'node:path';
import { homedir } from 'node:os';
import { parseFrontmatter } from '../../lib/frontmatter.mjs';

const cwd = process.cwd();
const projectConfigPath = join(cwd, '.claude', 'okr.local.md');
const homeConfigPath = join(homedir(), '.claude', 'okr', 'org', 'profil.md');

// Topic guard (UserPromptSubmit): only inject OKR context when the user's
// prompt is plausibly OKR-related. The stdin read is non-blocking here -- under
// execFileSync (Claude Code's hook call and the tests) stdin is a closed pipe
// so EOF is immediate; the isTTY guard avoids blocking in an interactive shell.
// Default to PASS (inject) on any doubt -- empty/unparseable stdin, missing
// prompt field, or TTY -- so we never drop a legitimate OKR prompt. Only an
// explicit non-matching prompt is suppressed. No network.
let rawPrompt = '';
try {
  if (!process.stdin.isTTY) rawPrompt = readFileSync(0, 'utf8');
} catch {
  rawPrompt = '';
}
if (rawPrompt) {
  let promptText = null;
  try {
    promptText = JSON.parse(rawPrompt).prompt;
  } catch {
    promptText = null;
  }
  if (typeof promptText === 'string' && promptText.length > 0) {
    const okrPattern = /\bokr\b|objective|key result|n[oø]kkelresultat|noekkelresultat|\bkr\b|\bm[aå]l\b|\bmaal\b|tildelingsbrev|kaskade|syklus|tertial|kvartal/i;
    if (!okrPattern.test(promptText)) {
      process.exit(0);
    }
  }
}

// Hybrid org-profile resolution (most-specific-wins): project-local overrides
// the machine-global home profile. The home path is the Fase 3 migration target;
// this read is forward-compatible and stays inert until that file exists.
// NOTE: only the org PROFILE resolves to home. Cycle/work data stays cwd-bound
// and is no longer pre-injected -- it is retrieved on-demand via the
// okr-second-brain-search skill.
const configPath = existsSync(projectConfigPath)
  ? projectConfigPath
  : (existsSync(homeConfigPath) ? homeConfigPath : null);

if (!configPath) {
  process.exit(0);
}

try {
  const content = readFileSync(configPath, 'utf8');
  const { raw, get } = parseFrontmatter(content);
  if (raw === null) process.exit(0);

  // Core fields (backwards-compatible with old 4-field format)
  const org = get('navn') || get('name');
  const syklus = get('gjeldende') || get('id') || get('current_cycle');
  const sektor = get('sektor') || get('sector') || get('domene');
  const linear = raw.includes('aktivert: true') || raw.includes('enabled: true');

  // New v1.1 fields (silently skipped if absent)
  const modenhet = get('modenhetsnivaa');
  const fase = get('fase');
  const frikoblet = get('okr_frikoblet_fra_loenn');
  const trygghet = get('psykologisk_trygghet');
  const kortform = get('kortform');

  if (!org) process.exit(0);

  // Build message parts
  const parts = [`Organisasjon: ${org}${kortform ? ` (${kortform})` : ''}`];
  if (syklus) parts.push(`Syklus: ${syklus}${fase ? ` [${fase}]` : ''}`);
  if (sektor) parts.push(`Sektor: ${sektor}`);
  if (modenhet) parts.push(`Modenhet: ${modenhet}`);
  if (frikoblet !== null) parts.push(`OKR frikoblet fra lonn: ${frikoblet}`);
  if (trygghet) parts.push(`Psykologisk trygghet: ${trygghet}`);
  if (linear) parts.push('Linear: aktivert');

  // Base context line from the core profile fields only. The directory-tree
  // enumeration that used to live here (the :92-191 MOVE block) is removed:
  // retrieval is now on-demand via the okr-second-brain-search skill, not
  // pre-injected. The payload is therefore independent of file count. (SC5)
  let msg = `OKR-kontekst (fra .claude/okr.local.md): ${parts.join(', ')}.`;

  // Resolve ONE pointer to the second-brain index.md, reusing most-specific-wins
  // (project bundle preferred, else home bundle). Project root is cwd-bound
  // (.claude/okr/); the home bundle root is ~/.claude/okr/org/ (two-root model).
  const projectIndex = join(cwd, '.claude', 'okr', 'index.md');
  const homeIndex = join(homedir(), '.claude', 'okr', 'org', 'index.md');
  const indexPath = existsSync(projectIndex)
    ? projectIndex
    : (existsSync(homeIndex) ? homeIndex : null);

  if (indexPath) {
    msg += `\nPersonlig OKF-kontekst finnes - sok wikien (skill: okr-second-brain-search) eller se ${indexPath}.`;
  }

  process.stdout.write(JSON.stringify({ systemMessage: msg }));
} catch {
  // Graceful exit on any error — never block the user
  process.exit(0);
}