#!/usr/bin/env python3
"""
Verification script for ancient language database sources.
Checks that source websites are real/accessible and spot-checks entries.
"""

import json
import os
import random
import time
import csv
import sys
import io
from pathlib import Path
from collections import defaultdict

# Fix Windows console encoding
sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8', errors='replace')
sys.stderr = io.TextIOWrapper(sys.stderr.buffer, encoding='utf-8', errors='replace')

import requests
import urllib3
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
from urllib.parse import quote

# Paths
LEXICONS_DIR = Path(r"C:\Users\alvin\hf-ancient-scripts\data\training\lexicons")
AUDIT_DIR = Path(r"C:\Users\alvin\hf-ancient-scripts\data\training\audit_trails")

# Rate limiting
REQUEST_DELAY = 1.5  # seconds between requests

random.seed(42)

# ============================================================
# 1. Source Website Accessibility Check
# ============================================================

SOURCE_URLS = {
    "palaeolexicon": "https://www.palaeolexicon.com",
    "ediana": "https://ediana.gwi.uni-muenchen.de",
    "oracc_ecut": "https://oracc.museum.upenn.edu",
    "tir_raetica": "https://www.univie.ac.at/raetica/",
    "avesta_org": "https://avesta.org",
}

# Per-entry verification URL templates (where possible)
ENTRY_URL_TEMPLATES = {
    "palaeolexicon": "https://www.palaeolexicon.com/Word/Show/{word_id}",
    "ediana": "https://ediana.gwi.uni-muenchen.de/dictionary/lemma/{entry_id}",
    # oracc doesn't have simple per-word URLs; we check the glossary pages
    "oracc_ecut": "https://oracc.museum.upenn.edu/ecut/",
    # TIR doesn't have per-word URLs in a simple pattern
    "tir_raetica": "https://www.univie.ac.at/raetica/wiki/Main_Page",
    "avesta_org": "https://avesta.org",
}

HEADERS = {
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 "
                  "(KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"
}


def check_url(url, timeout=15, label=""):
    """Check if a URL is accessible. Returns (status_code, ok, error_msg)."""
    try:
        resp = requests.get(url, headers=HEADERS, timeout=timeout, allow_redirects=True, verify=False)
        return resp.status_code, resp.ok, None
    except requests.exceptions.SSLError as e:
        return None, False, f"SSL Error: {e}"
    except requests.exceptions.ConnectionError as e:
        return None, False, f"Connection Error: {e}"
    except requests.exceptions.Timeout:
        return None, False, "Timeout"
    except Exception as e:
        return None, False, f"Error: {e}"


def check_url_contains(url, search_text, timeout=15):
    """Check if a URL's content contains specific text."""
    try:
        resp = requests.get(url, headers=HEADERS, timeout=timeout, allow_redirects=True, verify=False)
        if resp.ok:
            return search_text.lower() in resp.text.lower(), resp.status_code
        return False, resp.status_code
    except Exception as e:
        return False, str(e)


def verify_source_websites():
    """Check accessibility of all source websites."""
    print("=" * 70)
    print("PHASE 1: SOURCE WEBSITE ACCESSIBILITY")
    print("=" * 70)
    results = {}
    for source, url in SOURCE_URLS.items():
        status, ok, err = check_url(url)
        results[source] = {"url": url, "status": status, "ok": ok, "error": err}
        if ok:
            print(f"  [OK]   {source:20s} -> {url} (HTTP {status})")
        else:
            print(f"  [FAIL] {source:20s} -> {url} (status={status}, error={err})")
        time.sleep(REQUEST_DELAY)
    return results


# ============================================================
# 2. Load and Sample Entries from Audit Trails
# ============================================================

def load_audit_trail(filepath):
    """Load all entries from a JSONL audit trail file."""
    entries = []
    with open(filepath, "r", encoding="utf-8") as f:
        for line in f:
            line = line.strip()
            if line:
                try:
                    entries.append(json.loads(line))
                except json.JSONDecodeError:
                    pass
    return entries


def sample_entries(entries, n=10):
    """Sample n random entries."""
    if len(entries) <= n:
        return entries
    return random.sample(entries, n)


# ============================================================
# 3. Per-Source Verification
# ============================================================

def verify_palaeolexicon_entries():
    """Verify palaeolexicon entries by checking word_id URLs."""
    print("\n" + "=" * 70)
    print("PALAEOLEXICON VERIFICATION")
    print("=" * 70)

    audit_files = sorted(AUDIT_DIR.glob("palaeolexicon_*.jsonl"))
    print(f"  Audit trail files: {[f.name for f in audit_files]}")

    all_results = {}
    for af in audit_files:
        lang = af.stem.replace("palaeolexicon_", "")
        entries = load_audit_trail(af)
        print(f"\n  --- Language: {lang} ({len(entries)} entries) ---")

        samples = sample_entries(entries, 10)
        lang_results = []
        for entry in samples:
            word = entry.get("word", "?")
            gloss = entry.get("gloss", "?")
            word_id = entry.get("word_id")

            if word_id:
                url = ENTRY_URL_TEMPLATES["palaeolexicon"].format(word_id=word_id)
                found, status = check_url_contains(url, word, timeout=15)
                result = {
                    "word": word,
                    "gloss": gloss,
                    "word_id": word_id,
                    "url": url,
                    "http_status": status,
                    "word_found_in_page": found,
                }
                status_str = "FOUND" if found else f"NOT FOUND (HTTP {status})"
                print(f"    word_id={word_id:6d}  word={word:20s}  gloss={gloss:30s}  -> {status_str}")
                lang_results.append(result)
                time.sleep(REQUEST_DELAY)
            else:
                print(f"    [NO ID] word={word:20s} gloss={gloss}")
                lang_results.append({
                    "word": word, "gloss": gloss, "word_id": None,
                    "url": None, "verified": "no_id"
                })

        all_results[lang] = lang_results
    return all_results


def verify_ediana_entries():
    """Verify eDiAna entries by checking entry_id URLs."""
    print("\n" + "=" * 70)
    print("eDiAna VERIFICATION")
    print("=" * 70)

    audit_files = sorted(AUDIT_DIR.glob("ediana_*.jsonl"))
    print(f"  Audit trail files: {[f.name for f in audit_files]}")

    all_results = {}
    for af in audit_files:
        lang = af.stem.replace("ediana_", "")
        entries = load_audit_trail(af)
        if not entries:
            print(f"\n  --- Language: {lang} (EMPTY audit trail) ---")
            all_results[lang] = []
            continue

        print(f"\n  --- Language: {lang} ({len(entries)} entries) ---")
        samples = sample_entries(entries, 10)
        lang_results = []

        for entry in samples:
            word = entry.get("word", "?")
            gloss = entry.get("gloss", "?")
            entry_id = entry.get("entry_id")
            lang_detail = entry.get("language_detail", "?")

            if entry_id:
                url = ENTRY_URL_TEMPLATES["ediana"].format(entry_id=entry_id)
                status_code, ok, err = check_url(url, timeout=15)
                result = {
                    "word": word,
                    "gloss": gloss,
                    "entry_id": entry_id,
                    "url": url,
                    "http_status": status_code,
                    "accessible": ok,
                }
                status_str = f"HTTP {status_code}" if status_code else err
                print(f"    entry_id={entry_id:5s}  word={word:20s}  gloss={gloss:35s}  -> {status_str}")
                lang_results.append(result)
                time.sleep(REQUEST_DELAY)
            else:
                print(f"    [NO ID] word={word:20s} gloss={gloss}")
                lang_results.append({
                    "word": word, "gloss": gloss, "entry_id": None, "verified": "no_id"
                })

        all_results[lang] = lang_results
    return all_results


def verify_oracc_entries():
    """Verify ORACC/eCUT entries."""
    print("\n" + "=" * 70)
    print("ORACC/eCUT VERIFICATION")
    print("=" * 70)

    af = AUDIT_DIR / "oracc_ecut_xur.jsonl"
    entries = load_audit_trail(af)
    print(f"  Audit trail: {af.name} ({len(entries)} entries)")

    samples = sample_entries(entries, 10)
    results = []

    # First check the glossary index page
    glossary_url = "https://oracc.museum.upenn.edu/ecut/akk/index.html"
    print(f"\n  Checking glossary index: {glossary_url}")
    status_code, ok, err = check_url(glossary_url, timeout=15)
    print(f"    -> HTTP {status_code}" if status_code else f"    -> {err}")
    time.sleep(REQUEST_DELAY)

    # Try the JSON API endpoint
    json_url = "https://oracc.museum.upenn.edu/ecut/akk/sortindex.json"
    print(f"  Checking glossary JSON: {json_url}")
    status_code, ok, err = check_url(json_url, timeout=15)
    print(f"    -> HTTP {status_code}" if status_code else f"    -> {err}")
    time.sleep(REQUEST_DELAY)

    # Also try the main eCUT page
    main_url = "https://oracc.museum.upenn.edu/ecut/"
    print(f"  Checking main eCUT page: {main_url}")
    status_code, ok, err = check_url(main_url, timeout=15)
    print(f"    -> HTTP {status_code}" if status_code else f"    -> {err}")
    time.sleep(REQUEST_DELAY)

    print(f"\n  Sample entries from audit trail:")
    for entry in samples:
        word = entry.get("word", "?")
        gloss = entry.get("gloss", "?")
        print(f"    word={word:20s}  gloss={gloss}")
        results.append({"word": word, "gloss": gloss, "source": "oracc_ecut"})

    return results


def verify_tir_raetica_entries():
    """Verify TIR (Thesaurus Inscriptionum Raeticarum) entries."""
    print("\n" + "=" * 70)
    print("TIR RAETICA VERIFICATION")
    print("=" * 70)

    af = AUDIT_DIR / "tir_raetica_xrr.jsonl"
    entries = load_audit_trail(af)
    print(f"  Audit trail: {af.name} ({len(entries)} entries)")

    samples = sample_entries(entries, 10)
    results = []

    # Check main TIR wiki pages
    urls_to_check = [
        "https://www.univie.ac.at/raetica/wiki/Main_Page",
        "https://www.univie.ac.at/raetica/wiki/Category:Lexicon",
        "https://www.univie.ac.at/raetica/wiki/Category:Words",
    ]
    for url in urls_to_check:
        print(f"  Checking: {url}")
        status_code, ok, err = check_url(url, timeout=15)
        if status_code:
            print(f"    -> HTTP {status_code}")
        else:
            print(f"    -> {err}")
        time.sleep(REQUEST_DELAY)

    print(f"\n  Sample entries from audit trail:")
    for entry in samples:
        word = entry.get("word", "?")
        gloss = entry.get("gloss", "?")
        word_type = entry.get("word_type", "")
        # Try to construct a wiki URL for the word
        wiki_url = f"https://www.univie.ac.at/raetica/wiki/{quote(word)}"
        status_code, ok, err = check_url(wiki_url, timeout=15)
        status_str = f"HTTP {status_code}" if status_code else err
        print(f"    word={word:20s}  gloss={gloss:25s}  wiki_url -> {status_str}")
        results.append({
            "word": word, "gloss": gloss, "wiki_url": wiki_url,
            "http_status": status_code, "accessible": ok
        })
        time.sleep(REQUEST_DELAY)

    return results


def verify_avesta_entries():
    """Verify avesta.org entries."""
    print("\n" + "=" * 70)
    print("AVESTA.ORG VERIFICATION")
    print("=" * 70)

    af = AUDIT_DIR / "avesta_org_ave.jsonl"
    entries = load_audit_trail(af)
    print(f"  Audit trail: {af.name} ({len(entries)} entries)")

    # Check main site
    main_url = "https://avesta.org"
    print(f"\n  Checking main site: {main_url}")
    status_code, ok, err = check_url(main_url, timeout=15)
    if status_code:
        print(f"    -> HTTP {status_code}")
    else:
        print(f"    -> {err}")
    time.sleep(REQUEST_DELAY)

    # Check dictionary/glossary page
    dict_urls = [
        "https://avesta.org/dictionary.html",
        "https://avesta.org/avdict/avdict.htm",
        "https://avesta.org/avdict.htm",
    ]
    for url in dict_urls:
        print(f"  Checking dictionary page: {url}")
        status_code, ok, err = check_url(url, timeout=15)
        if status_code:
            print(f"    -> HTTP {status_code}")
        else:
            print(f"    -> {err}")
        time.sleep(REQUEST_DELAY)

    print(f"\n  Sample entries from audit trail:")
    # Filter out obvious bad entries (NOTE, Example)
    real_entries = [e for e in entries if e.get("word") not in ("NOTE", "Example", "swift")]
    samples = sample_entries(real_entries, min(10, len(real_entries)))
    results = []
    for entry in samples:
        word = entry.get("word", "?")
        gloss = entry.get("gloss", "?")
        print(f"    word={word:20s}  gloss={gloss}")
        results.append({"word": word, "gloss": gloss, "source": "avesta.org"})

    return results


# ============================================================
# 4. Audit Trail Structure Report
# ============================================================

def report_audit_trail_structures():
    """Report the structure of each audit trail file."""
    print("\n" + "=" * 70)
    print("AUDIT TRAIL STRUCTURE REPORT")
    print("=" * 70)

    for af in sorted(AUDIT_DIR.glob("*.jsonl")):
        entries = load_audit_trail(af)
        if not entries:
            print(f"\n  {af.name}: EMPTY (0 entries)")
            continue

        # Get all keys across entries
        all_keys = set()
        for e in entries:
            all_keys.update(e.keys())

        # Check for URL/provenance fields
        url_fields = [k for k in all_keys if any(x in k.lower() for x in ["url", "link", "source", "id", "page"])]

        print(f"\n  {af.name}: {len(entries)} entries")
        print(f"    Fields: {sorted(all_keys)}")
        print(f"    URL/provenance fields: {sorted(url_fields)}")
        # Show first entry as example
        print(f"    Example: {json.dumps(entries[0], ensure_ascii=False)[:200]}")

        # Check for word_id presence (palaeolexicon)
        if "word_id" in all_keys:
            ids_present = sum(1 for e in entries if e.get("word_id"))
            print(f"    word_id coverage: {ids_present}/{len(entries)} entries have word_id")

        # Check for entry_id presence (ediana)
        if "entry_id" in all_keys:
            ids_present = sum(1 for e in entries if e.get("entry_id"))
            print(f"    entry_id coverage: {ids_present}/{len(entries)} entries have entry_id")


# ============================================================
# 5. Cross-check: audit trail entries vs lexicon TSV entries
# ============================================================

def cross_check_audit_vs_lexicon():
    """Check that audit trail entries appear in the lexicon TSVs."""
    print("\n" + "=" * 70)
    print("CROSS-CHECK: AUDIT TRAILS vs LEXICON TSVs")
    print("=" * 70)

    source_lang_map = {
        "palaeolexicon": ["ett", "xcr", "xhu", "xlc", "xld", "xlw"],
        "ediana": ["xcr", "xlc", "xld", "xlw"],
        "oracc_ecut": ["xur"],
        "tir_raetica": ["xrr"],
        "avesta_org": ["ave"],
    }

    for source, langs in source_lang_map.items():
        for lang in langs:
            audit_file = AUDIT_DIR / f"{source}_{lang}.jsonl"
            lexicon_file = LEXICONS_DIR / f"{lang}.tsv"

            if not audit_file.exists():
                print(f"  {source}/{lang}: audit trail MISSING")
                continue
            if not lexicon_file.exists():
                print(f"  {source}/{lang}: lexicon TSV MISSING")
                continue

            audit_entries = load_audit_trail(audit_file)
            if not audit_entries:
                print(f"  {source}/{lang}: audit trail EMPTY")
                continue

            # Load lexicon words for this source
            lexicon_words = set()
            with open(lexicon_file, "r", encoding="utf-8") as f:
                reader = csv.reader(f, delimiter="\t")
                header = next(reader)
                word_idx = 0  # Word column
                source_idx = 3  # Source column
                for row in reader:
                    if len(row) > source_idx:
                        src_name = row[source_idx].strip()
                        # Map source names
                        if source == "palaeolexicon" and src_name == "palaeolexicon":
                            lexicon_words.add(row[word_idx].strip())
                        elif source == "ediana" and src_name == "ediana":
                            lexicon_words.add(row[word_idx].strip())
                        elif source == "oracc_ecut" and src_name == "oracc_ecut":
                            lexicon_words.add(row[word_idx].strip())
                        elif source == "tir_raetica" and src_name == "tir_raetica":
                            lexicon_words.add(row[word_idx].strip())

            # Check overlap
            audit_words = {e.get("word", "").strip() for e in audit_entries}
            in_both = audit_words & lexicon_words
            only_audit = audit_words - lexicon_words
            only_lexicon = lexicon_words - audit_words

            print(f"  {source}/{lang}: audit={len(audit_words)}, lexicon={len(lexicon_words)}, "
                  f"overlap={len(in_both)}, audit_only={len(only_audit)}, lexicon_only={len(only_lexicon)}")
            if only_audit and len(only_audit) <= 5:
                print(f"    Audit-only words: {only_audit}")
            if only_lexicon and len(only_lexicon) <= 5:
                print(f"    Lexicon-only words: {only_lexicon}")


# ============================================================
# 6. Wiktionary Expansion Audit Trail Spot Check
# ============================================================

def verify_wiktionary_expansion():
    """Spot-check wiktionary expansion audit trails for URL structure."""
    print("\n" + "=" * 70)
    print("WIKTIONARY EXPANSION SPOT CHECK")
    print("=" * 70)

    wikt_files = sorted(AUDIT_DIR.glob("wiktionary_expansion_*.jsonl"))
    print(f"  Found {len(wikt_files)} wiktionary expansion audit files")

    # Sample from a few files
    for af in wikt_files[:4]:
        entries = load_audit_trail(af)
        if not entries:
            continue

        lang = af.stem.replace("wiktionary_expansion_", "")
        print(f"\n  --- {lang} ({len(entries)} entries) ---")
        samples = sample_entries(entries, 3)

        for entry in samples:
            word = entry.get("word", "?")
            page_title = entry.get("page_title", "")
            gloss = entry.get("gloss", "?")

            if page_title:
                # Wiktionary URL
                url = f"https://en.wiktionary.org/wiki/{quote(page_title)}"
                status_code, ok, err = check_url(url, timeout=15)
                status_str = f"HTTP {status_code}" if status_code else err
                print(f"    word={word:25s}  page_title={page_title:25s}  -> {status_str}")
                time.sleep(REQUEST_DELAY)
            else:
                print(f"    word={word:25s}  [no page_title]  gloss={gloss}")


# ============================================================
# 7. Data Quality Checks for avesta.org
# ============================================================

def check_avesta_data_quality():
    """Check quality of avesta.org data (it looked suspicious)."""
    print("\n" + "=" * 70)
    print("AVESTA.ORG DATA QUALITY CHECK")
    print("=" * 70)

    af = AUDIT_DIR / "avesta_org_ave.jsonl"
    entries = load_audit_trail(af)

    print(f"  Total entries: {len(entries)}")

    # Check for obvious problems
    suspicious = []
    for entry in entries:
        word = entry.get("word", "")
        gloss = entry.get("gloss", "")
        # Check for entries that look like scraping artifacts
        if word in ("NOTE", "Example", "swift") or not word:
            suspicious.append(entry)
        # Check for entries where gloss looks like it's another word, not a translation
        if gloss and not any(c == ' ' for c in gloss) and gloss.isalpha() and len(gloss) < 15:
            # Could be fine (single-word gloss) or could be bad parse
            pass

    print(f"  Suspicious entries (metadata/artifacts): {len(suspicious)}")
    for s in suspicious:
        print(f"    -> {json.dumps(s, ensure_ascii=False)}")

    print(f"\n  Sample of normal entries:")
    normal = [e for e in entries if e.get("word") not in ("NOTE", "Example", "swift")]
    for entry in sample_entries(normal, 10):
        print(f"    word={entry.get('word','?'):20s}  gloss={entry.get('gloss','?')}")


# ============================================================
# MAIN
# ============================================================

def main():
    print("ANCIENT LANGUAGE DATABASE SOURCE VERIFICATION")
    print("=" * 70)
    print(f"Date: {time.strftime('%Y-%m-%d %H:%M:%S')}")
    print(f"Lexicons dir: {LEXICONS_DIR}")
    print(f"Audit trails dir: {AUDIT_DIR}")
    print()

    # Phase 1: Website accessibility
    website_results = verify_source_websites()

    # Phase 2: Audit trail structure report
    report_audit_trail_structures()

    # Phase 3: Per-source entry verification
    paleo_results = verify_palaeolexicon_entries()
    ediana_results = verify_ediana_entries()
    oracc_results = verify_oracc_entries()
    tir_results = verify_tir_raetica_entries()
    avesta_results = verify_avesta_entries()

    # Phase 4: Data quality checks
    check_avesta_data_quality()

    # Phase 5: Wiktionary expansion spot check
    verify_wiktionary_expansion()

    # Phase 6: Cross-check audit trails vs lexicons
    cross_check_audit_vs_lexicon()

    # ============================================================
    # SUMMARY
    # ============================================================
    print("\n" + "=" * 70)
    print("FINAL SUMMARY")
    print("=" * 70)

    print("\n  Website Accessibility:")
    for source, res in website_results.items():
        status = "ACCESSIBLE" if res["ok"] else "INACCESSIBLE"
        print(f"    {source:20s}: {status}")

    print("\n  Palaeolexicon Entry Verification:")
    for lang, results in paleo_results.items():
        verified = sum(1 for r in results if r.get("word_found_in_page"))
        total = sum(1 for r in results if r.get("url"))
        no_id = sum(1 for r in results if r.get("verified") == "no_id")
        print(f"    {lang}: {verified}/{total} verified via URL" + (f", {no_id} without word_id" if no_id else ""))

    print("\n  eDiAna Entry Verification:")
    for lang, results in ediana_results.items():
        if not results:
            print(f"    {lang}: EMPTY audit trail")
            continue
        accessible = sum(1 for r in results if r.get("accessible"))
        total = sum(1 for r in results if r.get("url"))
        print(f"    {lang}: {accessible}/{total} URLs accessible")

    print("\n  ORACC/eCUT: entries sampled but no per-word URL verification possible")
    print(f"  TIR Raetica: {len(tir_results)} entries checked via wiki URLs")
    print(f"  Avesta.org: {len(avesta_results)} entries sampled")

    print("\n  KEY FINDINGS:")
    # Summarize any issues
    inaccessible = [s for s, r in website_results.items() if not r["ok"]]
    if inaccessible:
        print(f"    [WARNING] Inaccessible websites: {', '.join(inaccessible)}")
    else:
        print(f"    [OK] All source websites are accessible")


if __name__ == "__main__":
    main()