#!/usr/bin/env python3
"""
import_new_k2_items.py

Importa los K2 items nuevos de Joomla prod (id > 17873) al WordPress local (Docker).
Conexión a Joomla: SSH + MySQL en feadulta@134.0.10.170
Conexión a WP: Docker exec wordpress-mysql

Categorías WP asignadas según extra_fields:
  - ES + tiene "libro de la biblia" (id 9) → Comentarios al evangelio (1647) + Feadulta (71)
  - ES + no id9 + título "DOMINGO/SEMANA SANTA/etc." → Eucaristía (1648) + Feadulta (71)
  - ES + no id9 + otro → Artículos (1650) + Feadulta (71)
  - No ES → Artículos (1650) + Feadulta (71)

Idioma Polylang asignado según extra_field id 16:
  1=es, 2=en, 3=fr, 4=it, 5=pt
"""

import json
import subprocess
import sys
from datetime import datetime

# ── Configuración ──────────────────────────────────────────────────────────────

JOOMLA_SSH_HOST = "134.0.10.170"
JOOMLA_SSH_USER = "feadulta"
JOOMLA_SSH_PASS = "C6c2A!mAl3Wj.BQF"
JOOMLA_DB_HOST  = "127.0.0.1"
JOOMLA_DB_USER  = "fejoomla3"
JOOMLA_DB_PASS  = "5FF-}5^[>7^pK4W9"
JOOMLA_DB_NAME  = "fejoomla3"

WP_DOCKER      = "wordpress-mysql"
WP_DB_USER     = "wordpress_user"
WP_DB_PASS     = "wordpress_pass"
WP_DB_NAME     = "wordpress_db"
WP_DB_HOST     = "wordpress-mysql"  # dentro del container

LAST_K2_ID     = None    # se calcula dinámicamente en main(): MAX(_fgj2wp_old_k2_id) en WP

# WP term_taxonomy_ids (obtenidos con SELECT tt.term_taxonomy_id FROM wp_term_taxonomy tt WHERE tt.term_id=N)
# Precalculados:
CAT_FEADULTA   = 71   # term_id  (se convertirá a term_taxonomy_id abajo)
CAT_ARTICULOS  = 1650
CAT_EVANGELIO  = 1647
CAT_EUCARISTIA = 1648

LANG_MAP = {1: 'es', 2: 'en', 3: 'fr', 4: 'it', 5: 'pt'}
DOMINGO_RE = r'DOMINGO|SEMANA SANTA|SEMANA DE PASCUA|PENTECOST|NAVIDAD|EPIFAN'

DRY_RUN = '--dry-run' in sys.argv

# ── Helpers ────────────────────────────────────────────────────────────────────

def ssh_mysql(query: str) -> list[dict]:
    """Ejecuta una query en el MySQL de Joomla prod vía sshpass."""
    cmd = [
        'sshpass', '-p', JOOMLA_SSH_PASS,
        'ssh', f'{JOOMLA_SSH_USER}@{JOOMLA_SSH_HOST}',
        f'mysql --skip-ssl -h {JOOMLA_DB_HOST} -u {JOOMLA_DB_USER} '
        f'-p{repr(JOOMLA_DB_PASS)} {JOOMLA_DB_NAME} '
        f'--default-character-set=utf8mb4 -B -e "{query}"'
    ]
    result = subprocess.run(cmd, capture_output=True, text=True, encoding='utf-8')
    if result.returncode != 0:
        print(f"[ERROR SSH] {result.stderr[:300]}", file=sys.stderr)
        return []
    lines = result.stdout.strip().split('\n')
    if len(lines) < 2:
        return []
    headers = lines[0].split('\t')
    rows = []
    for line in lines[1:]:
        if line:
            vals = line.split('\t')
            rows.append(dict(zip(headers, vals)))
    return rows


def wp_mysql(query: str) -> list[dict]:
    """Ejecuta una query en el MySQL del WP local vía Docker exec."""
    cmd = [
        'docker', 'exec', WP_DOCKER,
        'mysql', '-u', WP_DB_USER, f'-p{WP_DB_PASS}', WP_DB_NAME,
        '--default-character-set=utf8mb4', '-B', '-e', query
    ]
    result = subprocess.run(cmd, capture_output=True, text=True, encoding='utf-8')
    if result.returncode != 0:
        print(f"[ERROR WP] {result.stderr[:300]}", file=sys.stderr)
        return []
    lines = result.stdout.strip().split('\n')
    if len(lines) < 2:
        return []
    headers = lines[0].split('\t')
    rows = []
    for line in lines[1:]:
        if line:
            vals = line.split('\t')
            rows.append(dict(zip(headers, vals)))
    return rows


def wp_execute(sql: str):
    """Ejecuta un INSERT/UPDATE en WP MySQL."""
    if DRY_RUN:
        print(f"  [DRY] {sql[:120]}")
        return
    cmd = [
        'docker', 'exec', WP_DOCKER,
        'mysql', '-u', WP_DB_USER, f'-p{WP_DB_PASS}', WP_DB_NAME,
        '--default-character-set=utf8mb4', '-e', sql
    ]
    result = subprocess.run(cmd, capture_output=True, text=True)
    if result.returncode != 0:
        print(f"[ERROR INSERT] {result.stderr[:300]}", file=sys.stderr)


def esc(s: str) -> str:
    """Escapa una string para SQL."""
    return s.replace('\\', '\\\\').replace("'", "\\'")


# ── Cargar datos auxiliares ────────────────────────────────────────────────────

def load_user_map() -> dict:
    """Devuelve {joomla_user_id: wp_user_id}."""
    rows = wp_mysql(
        "SELECT um.meta_value jid, u.ID wid FROM wp_users u "
        "JOIN wp_usermeta um ON um.user_id=u.ID "
        "WHERE um.meta_key='_fgj2wp_old_user_id'"
    )
    m = {}
    for r in rows:
        try:
            m[int(r['jid'])] = int(r['wid'])
        except ValueError:
            pass
    return m


def load_term_taxonomy_ids() -> dict:
    """Devuelve {term_id: term_taxonomy_id} para las categorías relevantes."""
    term_ids = [CAT_FEADULTA, CAT_ARTICULOS, CAT_EVANGELIO, CAT_EUCARISTIA]
    ids_str = ','.join(str(x) for x in term_ids)
    rows = wp_mysql(
        f"SELECT term_id, term_taxonomy_id FROM wp_term_taxonomy "
        f"WHERE term_id IN ({ids_str}) AND taxonomy='category'"
    )
    return {int(r['term_id']): int(r['term_taxonomy_id']) for r in rows}


def load_polylang_term_ids() -> dict:
    """Devuelve {'es': tt_id, 'en': tt_id, ...} para los términos de idioma de Polylang."""
    rows = wp_mysql(
        "SELECT t.slug, tt.term_taxonomy_id FROM wp_terms t "
        "JOIN wp_term_taxonomy tt ON tt.term_id=t.term_id "
        "WHERE tt.taxonomy='language' AND t.slug IN ('es','en','fr','it','pt')"
    )
    return {r['slug']: int(r['term_taxonomy_id']) for r in rows}


# ── Parsear extra_fields ───────────────────────────────────────────────────────

def parse_extra_fields(ef_json: str) -> dict:
    """Devuelve dict con claves: lang_val, has_libro, cita_biblica."""
    result = {'lang_val': None, 'has_libro': False, 'cita_biblica': None}
    if not ef_json or ef_json == 'NULL':
        return result
    try:
        fields = json.loads(ef_json)
    except json.JSONDecodeError:
        return result
    for f in fields:
        fid = str(f.get('id', ''))
        val = f.get('value')
        if fid == '16' and val is not None:
            try:
                result['lang_val'] = int(val)
            except (ValueError, TypeError):
                pass
        elif fid == '9':
            result['has_libro'] = True
        elif fid == '14':
            if isinstance(val, list):
                result['cita_biblica'] = ','.join(str(v) for v in val)
            else:
                result['cita_biblica'] = str(val) if val else None
    return result


def determine_categories(ef: dict, title: str) -> list[int]:
    """Devuelve lista de term_ids de categoría para el post."""
    import re
    lang = ef.get('lang_val')
    es = (lang == 1 or lang is None)
    cats = [CAT_FEADULTA]
    if es and ef.get('has_libro'):
        cats.append(CAT_EVANGELIO)
    elif es and re.search(DOMINGO_RE, title, re.IGNORECASE):
        cats.append(CAT_EUCARISTIA)
    else:
        cats.append(CAT_ARTICULOS)
    return cats


# ── Import principal ───────────────────────────────────────────────────────────

def main():
    global LAST_K2_ID
    # Detección dinámica del último K2 importado (evita hardcodear y re-importar deltas previos)
    r = wp_mysql("SELECT MAX(CAST(meta_value AS UNSIGNED)) m FROM wp_postmeta "
                 "WHERE meta_key='_fgj2wp_old_k2_id'")
    LAST_K2_ID = int(r[0]['m']) if r and r[0].get('m') and r[0]['m'] != 'NULL' else 17873
    print(f"=== Import K2 items > {LAST_K2_ID} → WP local {'[DRY RUN]' if DRY_RUN else '[LIVE]'} ===\n")

    user_map = load_user_map()
    print(f"Usuarios mapeados: {len(user_map)}")

    tt_ids = load_term_taxonomy_ids()
    print(f"Categorías TT IDs: {tt_ids}")

    pl_ids = load_polylang_term_ids()
    print(f"Polylang idiomas: {pl_ids}")

    # Verificar que los K2 IDs ya en WP no se reimportan
    existing = wp_mysql(
        f"SELECT meta_value FROM wp_postmeta WHERE meta_key='_fgj2wp_old_k2_id' "
        f"AND meta_value+0 > {LAST_K2_ID}"
    )
    existing_ids = {int(r['meta_value']) for r in existing}
    print(f"K2 IDs > {LAST_K2_ID} ya en WP: {len(existing_ids)}")

    # Obtener items de Joomla vía SSH+MySQL (query por stdin para evitar escape de shell)
    print("\nObteniendo K2 items de Joomla prod...")
    # HEX encoding para campos de texto (evita que el HTML con saltos de línea
    # rompa el parsing TSV)
    query = (
        f"SELECT id, HEX(title) title, HEX(alias) alias, "
        f"HEX(introtext) introtext, HEX(`fulltext`) fulltext_col, "
        f"created, created_by, HEX(extra_fields) extra_fields, publish_up "
        f"FROM ew4r_k2_items "
        f"WHERE published=1 AND id > {LAST_K2_ID} ORDER BY id;"
    )
    mysql_cmd = (
        f"mysql --skip-ssl -h {JOOMLA_DB_HOST} -u {JOOMLA_DB_USER} "
        f"-p'{JOOMLA_DB_PASS}' {JOOMLA_DB_NAME} "
        f"--default-character-set=utf8mb4 -B"
    )
    cmd = [
        'sshpass', '-p', JOOMLA_SSH_PASS,
        'ssh', f'{JOOMLA_SSH_USER}@{JOOMLA_SSH_HOST}',
        mysql_cmd
    ]
    result = subprocess.run(cmd, input=query, capture_output=True, text=True, encoding='utf-8')
    if result.returncode != 0:
        print(f"ERROR: {result.stderr[:500]}")
        sys.exit(1)

    lines = result.stdout.strip().split('\n')
    if len(lines) < 2:
        print("No se encontraron items nuevos.")
        return

    headers = lines[0].split('\t')
    items = []
    for line in lines[1:]:
        if line:
            vals = line.split('\t')
            items.append(dict(zip(headers, vals)))

    print(f"Items a importar: {len(items)}")

    stats = {'ok': 0, 'skip': 0, 'err': 0}

    for item in items:
        k2_id = int(item['id'])

        if k2_id in existing_ids:
            print(f"  [SKIP] K2 id={k2_id} ya existe en WP")
            stats['skip'] += 1
            continue

        def unhex(val: str) -> str:
            if not val or val == 'NULL':
                return ''
            try:
                return bytes.fromhex(val).decode('utf-8', errors='replace')
            except Exception:
                return val

        title   = unhex(item.get('title', ''))
        alias   = unhex(item.get('alias', ''))
        intro   = unhex(item.get('introtext', ''))
        full    = unhex(item.get('fulltext_col', ''))
        ef_json = unhex(item.get('extra_fields', '')) or '[]'
        created = item.get('created', '') or datetime.now().strftime('%Y-%m-%d %H:%M:%S')
        if not created or created == 'NULL':
            created = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
        created_by_raw = item.get('created_by', '0')
        created_by = int(created_by_raw) if created_by_raw and created_by_raw != 'NULL' else 0

        # Contenido combinado
        if full and full.strip():
            content = intro + '\n<!--more-->\n' + full
        else:
            content = intro

        # Autor WP
        wp_author = user_map.get(created_by, 1)  # fallback: admin
        if created_by and created_by not in user_map:
            # Autor Joomla sin usuario WP equivalente: queda atribuido a «Fe Adulta».
            # NO se pierde el dato: corregir tras el delta con scripts/fix_k2_authors.php,
            # que crea el usuario (nombre real de ew4r_users) y reasigna post_author (#143).
            print(f"    ⚠ autor K2 {created_by} sin user WP → queda en 'Fe Adulta' "
                  f"(corregir con fix_k2_authors.php)")

        # Extra fields
        ef = parse_extra_fields(ef_json)
        lang_code = LANG_MAP.get(ef.get('lang_val'), 'es')
        cats = determine_categories(ef, title)

        print(f"  [{k2_id}] {title[:50]} | lang={lang_code} | cats={cats}")

        # INSERT post
        post_slug = esc(alias[:200]) if alias else ''
        post_title = esc(title)
        post_content = esc(content)
        post_date = created
        post_date_gmt = created  # simplificado (no ajuste TZ)

        insert_post = (
            f"INSERT INTO wp_posts "
            f"(post_author, post_date, post_date_gmt, post_content, post_title, "
            f"post_excerpt, post_status, comment_status, ping_status, post_name, "
            f"post_type, post_modified, post_modified_gmt, comment_count, "
            f"to_ping, pinged, post_content_filtered) VALUES ("
            f"{wp_author}, '{post_date}', '{post_date_gmt}', '{post_content}', "
            f"'{post_title}', '', 'publish', 'open', 'open', '{post_slug}', "
            f"'post', '{post_date}', '{post_date_gmt}', 0, '', '', '')"
        )
        wp_execute(insert_post)

        if DRY_RUN:
            stats['ok'] += 1
            continue

        # Obtener el ID del post recién insertado. NO usar LAST_INSERT_ID(): cada
        # docker exec abre una conexión nueva y devolvería 0. MAX(ID) es fiable
        # en uso secuencial (sin inserciones concurrentes).
        new_id_rows = wp_mysql("SELECT MAX(ID) as new_id FROM wp_posts")
        if not new_id_rows:
            print(f"  [ERROR] No se pudo obtener el ID del post para k2_id={k2_id}")
            stats['err'] += 1
            continue
        new_wp_id = int(new_id_rows[0]['new_id'])
        print(f"    → WP post ID={new_wp_id}")

        # INSERT metas
        metas = [
            ('_fgj2wp_old_k2_id', str(k2_id)),
            ('Idioma', str(ef.get('lang_val') or 1)),
        ]
        for meta_key, meta_val in metas:
            wp_execute(
                f"INSERT INTO wp_postmeta (post_id, meta_key, meta_value) "
                f"VALUES ({new_wp_id}, '{esc(meta_key)}', '{esc(meta_val)}')"
            )

        # Categorías
        for term_id in cats:
            tt_id = tt_ids.get(term_id)
            if tt_id:
                wp_execute(
                    f"INSERT IGNORE INTO wp_term_relationships (object_id, term_taxonomy_id) "
                    f"VALUES ({new_wp_id}, {tt_id})"
                )

        # Polylang language
        pl_tt = pl_ids.get(lang_code)
        if pl_tt:
            wp_execute(
                f"INSERT IGNORE INTO wp_term_relationships (object_id, term_taxonomy_id) "
                f"VALUES ({new_wp_id}, {pl_tt})"
            )

        stats['ok'] += 1

    # Actualizar counts de categorías
    if not DRY_RUN and stats['ok'] > 0:
        print("\nActualizando counts de categorías...")
        tt_ids_list = ','.join(str(v) for v in tt_ids.values())
        wp_execute(
            f"UPDATE wp_term_taxonomy tt SET count = ("
            f"SELECT COUNT(*) FROM wp_term_relationships tr WHERE tr.term_taxonomy_id=tt.term_taxonomy_id"
            f") WHERE tt.term_taxonomy_id IN ({tt_ids_list})"
        )

    print(f"\n=== Resultado: {stats['ok']} ok, {stats['skip']} skip, {stats['err']} err ===")


if __name__ == '__main__':
    main()