<?php
/**
 * Script para migrar metadatos de Joomla a categories/tags de WordPress
 * Ejecutar: wp eval-file migrate_metadata.php
 */

// Cargar WordPress
require_once('/var/www/html/wp-load.php');

echo "=== Iniciando migracion de metadatos ===\n\n";

// 1. Migrar AUTOR -> category
echo "1. Procesando AUTORES...\n";
$autores = $wpdb->get_results("
    SELECT DISTINCT meta_value as autor, COUNT(*) as cnt
    FROM wp_postmeta
    WHERE meta_key = 'Autor' AND meta_value IS NOT NULL AND meta_value != ''
    ORDER BY cnt DESC
");

$created = 0;
$assigned = 0;
foreach ($autores as $autor) {
    if (empty($autor->autor)) continue;
    
    // Buscar si ya existe la categoria
    $term = get_term_by('name', $autor->autor, 'category');
    
    if (!$term) {
        $result = wp_insert_term($autor->autor, 'category', array(
            'description' => 'Autor migrado desde Joomla: ' . $autor->autor,
            'slug' => sanitize_title($autor->autor)
        ));
        if (is_wp_error($result)) {
            echo "  - Error creando categoria '$autor->autor': " . $result->get_error_message() . "\n";
            continue;
        }
        $term_id = $result['term_id'];
        $created++;
    } else {
        $term_id = $term->term_id;
    }
    
    // Asignar a todos los posts que tienen este autor
    $posts = $wpdb->get_results($wpdb->prepare("
        SELECT DISTINCT post_id
        FROM wp_postmeta
        WHERE meta_key = 'Autor' AND meta_value = %s
    ", $autor->autor));
    
    foreach ($posts as $post) {
        wp_set_object_terms($post->post_id, $term_id, 'category', true);
        $assigned++;
    }
    
    echo "  - $autor->autor: $autor->cnt posts -> categoria ID $term_id\n";
}

echo "  Categorias de autor creadas: $created\n";
echo "  Asignaciones realizadas: $assigned\n\n";

// 2. Migrar IDIOMA -> post_tag
echo "2. Procesando IDIOMAS...\n";
$idiomas = $wpdb->get_results("
    SELECT DISTINCT meta_value as idioma, COUNT(*) as cnt
    FROM wp_postmeta
    WHERE meta_key = 'Idioma' AND meta_value IS NOT NULL AND meta_value != ''
    ORDER BY cnt DESC
");

$created_tags = 0;
$assigned_tags = 0;
foreach ($idiomas as $idioma) {
    if (empty($idioma->idioma)) continue;
    
    $term = get_term_by('name', $idioma->idioma, 'post_tag');
    
    if (!$term) {
        $result = wp_insert_term($idioma->idioma, 'post_tag', array(
            'description' => 'Idioma migrado desde Joomla',
            'slug' => sanitize_title($idioma->idioma)
        ));
        if (is_wp_error($result)) {
            echo "  - Error creando tag '$idioma->idioma': " . $result->get_error_message() . "\n";
            continue;
        }
        $term_id = $result['term_id'];
        $created_tags++;
    } else {
        $term_id = $term->term_id;
    }
    
    $posts = $wpdb->get_results($wpdb->prepare("
        SELECT DISTINCT post_id
        FROM wp_postmeta
        WHERE meta_key = 'Idioma' AND meta_value = %s
    ", $idioma->idioma));
    
    foreach ($posts as $post) {
        wp_set_object_terms($post->post_id, $term_id, 'post_tag', true);
        $assigned_tags++;
    }
    
    echo "  - $idioma->idioma: $idioma->cnt posts\n";
}

echo "  Tags de idioma creados: $created_tags\n";
echo "  Asignaciones: $assigned_tags\n\n";

// 3. Migrar TEMA -> category (subcategoria de TEMAS)
echo "3. Procesando TEMAS...\n";
// Crear categoria padre TEMAS si no existe
$temas_parent = get_term_by('name', 'TEMAS', 'category');
if (!$temas_parent) {
    $result = wp_insert_term('TEMAS', 'category', array(
        'description' => 'Categoria padre para temas',
        'slug' => 'temas'
    ));
    $temas_parent = get_term_by('name', 'TEMAS', 'category');
}

$temas = $wpdb->get_results("
    SELECT DISTINCT meta_value as tema, COUNT(*) as cnt
    FROM wp_postmeta
    WHERE meta_key = 'Tema' AND meta_value IS NOT NULL AND meta_value != ''
    ORDER BY cnt DESC
    LIMIT 50
");

$created_temas = 0;
foreach ($temas as $tema) {
    if (empty($tema->tema)) continue;
    
    $term = get_term_by('name', $tema->tema, 'category');
    
    if (!$term) {
        $result = wp_insert_term($tema->tema, 'category', array(
            'description' => 'Tema migrado desde Joomla',
            'slug' => sanitize_title($tema->tema),
            'parent' => $temas_parent->term_id
        ));
        if (!is_wp_error($result)) {
            $created_temas++;
        }
    }
    
    // Asignar
    $posts = $wpdb->get_results($wpdb->prepare("
        SELECT DISTINCT post_id
        FROM wp_postmeta
        WHERE meta_key = 'Tema' AND meta_value = %s
    ", $tema->tema));
    
    $term = get_term_by('name', $tema->tema, 'category');
    if ($term) {
        foreach ($posts as $post) {
            wp_set_object_terms($post->post_id, $term->term_id, 'category', true);
        }
    }
    
    echo "  - $tema->tema: $tema->cnt posts\n";
}

echo "  Categorias de tema creadas: $created_temas\n\n";

// 4. Migrar LIBRO DE LA BIBLIA -> category
echo "4. Procesando LIBROS DE LA BIBLIA...\n";
$libros = $wpdb->get_results("
    SELECT DISTINCT meta_value as libro, COUNT(*) as cnt
    FROM wp_postmeta
    WHERE meta_key = 'Libro de la biblia' AND meta_value IS NOT NULL AND meta_value != ''
    ORDER BY cnt DESC
    LIMIT 100
");

$created_libros = 0;
foreach ($libros as $libro) {
    if (empty($libro->libro)) continue;
    
    $term = get_term_by('name', $libro->libro, 'category');
    
    if (!$term) {
        $result = wp_insert_term($libro->libro, 'category', array(
            'description' => 'Libro biblico migrado desde Joomla',
            'slug' => sanitize_title($libro->libro)
        ));
        if (!is_wp_error($result)) {
            $created_libros++;
        }
    }
    
    $posts = $wpdb->get_results($wpdb->prepare("
        SELECT DISTINCT post_id
        FROM wp_postmeta
        WHERE meta_key = 'Libro de la biblia' AND meta_value = %s
    ", $libro->libro));
    
    $term = get_term_by('name', $libro->libro, 'category');
    if ($term) {
        foreach ($posts as $post) {
            wp_set_object_terms($post->post_id, $term->term_id, 'category', true);
        }
    }
    
    echo "  - $libro->libro: $libro->cnt posts\n";
}

echo "  Categorias de libros biblicos creadas: $created_libros\n\n";

echo "=== Migracion completada ===\n";