# Procyon — self-audit before send. Every item must PASS before an application
# is eligible for the user's approval/send gate.

import re

import db
import tailor


def run_audit(app_id, job, email_subject, email_body, tailored_resume):
    """Run the checklist, log results, return list of {item, result, detail}."""
    checks = []

    def add(item, result, detail):
        checks.append({'item': item, 'result': result, 'detail': detail})
        db.add_audit(app_id, job['id'], item, result, detail)

    company = (job.get('company') or '').strip()
    title = (job.get('title') or '').strip()

    # 1. Employer name present in email (personalization signal, NOT a safety gate — the LLM
    # often abbreviates ("PSI" for "Physical Superintelligence") or says "your team", and the
    # subject line already carries the company, so a missing exact match is only a WARN).
    if company:
        if company.lower() in (email_body or '').lower():
            add('Employer name in email', 'PASS', f'"{company}" appears in body')
        else:
            add('Employer name in email', 'WARN', f'"{company}" not verbatim in body (may be abbreviated)')
    else:
        add('Employer name in email', 'WARN', 'No company recorded — verify before send')

    # 2. No leftover placeholder / other-company names
    placeholders = ['[company]', '[name]', '{{', '}}', 'lorem', 'TODO', 'xxx']
    found = [p for p in placeholders if p.lower() in (email_body or '').lower()]
    add('No placeholder tokens', 'FAIL' if found else 'PASS',
        f'placeholders: {found}' if found else 'clean')

    # 3. Contact info present
    phone = db.get_setting('resume_phone', '')
    email = db.get_setting('resume_email', '')
    missing = []
    if phone and phone not in (email_body or ''):
        missing.append('phone')
    if email and email not in (email_body or ''):
        missing.append('email')
    add('Contact info in email', 'FAIL' if missing else 'PASS',
        f'missing: {missing}' if missing else 'phone + email present')

    # 4. Subject present and sane length
    if not email_subject:
        add('Email subject', 'FAIL', 'missing')
    elif len(email_subject) > 120:
        add('Email subject', 'FAIL', f'too long ({len(email_subject)} chars)')
    else:
        add('Email subject', 'PASS', email_subject)

    # 5. Tailored resume non-empty and no fabrication markers
    if not tailored_resume or len(tailored_resume) < 100:
        add('Tailored resume', 'FAIL', 'too short / empty')
    else:
        add('Tailored resume', 'PASS', f'{len(tailored_resume)} chars')

    # 6. Resume is a real deterministic resume (was "targeting header matches job" — removed:
    # the resume is now deterministic and no longer carries a job-name header, so that check
    # always false-warned).
    if tailored_resume and len(tailored_resume) > 100:
        add('Resume present', 'PASS', f'{len(tailored_resume)} chars, deterministic facts')
    else:
        add('Resume present', 'FAIL', 'resume missing')

    # 7. ATS keyword coverage — quality signal, never blocks sending (informational only).
    try:
        kws = tailor.extract_job_keywords(job.get('description') or '', top_n=12)
        cov, _kws, missing = tailor.ats_coverage(tailored_resume, kws)
        if cov >= 0.5:
            add('ATS keyword coverage', 'PASS', f'{int(cov*100)}% of top keywords present')
        else:
            add('ATS keyword coverage', 'WARN',
                f'{int(cov*100)}% — resume may not strongly echo this role ({", ".join(missing[:5])})')
    except Exception:
        add('ATS keyword coverage', 'WARN', 'could not compute')

    return checks


def all_pass(checks):
    return all(c['result'] != 'FAIL' for c in checks)