d'
AND o.post_status IN ('wc-completed', 'wc-processing', 'wc-on-hold')
AND DATE(o.post_date) BETWEEN %s AND %s
GROUP BY oim_product.meta_value
) current_sales ON current_sales.product_id = p.ID
LEFT JOIN (
SELECT
oim_product.meta_value as product_id,
SUM(CAST(oim.meta_value AS SIGNED)) as total_sold
FROM {$wpdb->prefix}woocommerce_order_itemmeta oim
INNER JOIN {$wpdb->prefix}woocommerce_order_items oi ON oi.order_item_id = oim.order_item_id
INNER JOIN {$wpdb->posts} o ON o.ID = oi.order_id
INNER JOIN {$wpdb->prefix}woocommerce_order_itemmeta oim_product ON oim_product.order_item_id = oi.order_item_id
WHERE oim.meta_key = '_qty'
AND oim_product.meta_key = '_product_id'
AND o.post_status IN ('wc-completed', 'wc-processing', 'wc-on-hold')
AND DATE(o.post_date) BETWEEN %s AND %s
GROUP BY oim_product.meta_value
) previous_sales ON previous_sales.product_id = p.ID
WHERE p.post_type = 'product'
AND p.post_status = 'publish'
AND (COALESCE(previous_sales.total_sold, 0) > 0)
HAVING sales_change < 0
ORDER BY change_percentage ASC
LIMIT %d
", $start_date, $end_date, $previous_period_start, $previous_period_end, $limit));
return $results ?: array();
} catch (Exception $e) {
error_log("WC AI Consultant: Error getting declining products: " . $e->getMessage());
return array();
}
}
// Continue with more REAL implementations...
private function get_top_customers($start_date, $end_date, $limit = 5) {
global $wpdb;
try {
if ($this->is_hpos_enabled()) {
$results = $wpdb->get_results($wpdb->prepare("
SELECT
u.display_name,
u.user_email,
o.customer_id,
SUM(o.total_amount) as total_spent,
COUNT(o.id) as order_count
FROM {$wpdb->prefix}wc_orders o
INNER JOIN {$wpdb->users} u ON u.ID = o.customer_id
WHERE o.customer_id > 0
AND o.status IN ('wc-completed', 'wc-processing', 'wc-on-hold')
AND DATE(o.date_created_gmt) BETWEEN %s AND %s
GROUP BY o.customer_id, u.display_name, u.user_email
ORDER BY total_spent DESC
LIMIT %d
", $start_date, $end_date, $limit));
} else {
$results = $wpdb->get_results($wpdb->prepare("
SELECT
u.display_name,
u.user_email,
pm.meta_value as customer_id,
SUM(CAST(pm2.meta_value AS DECIMAL(10,2))) as total_spent,
COUNT(p.ID) as order_count
FROM {$wpdb->postmeta} pm
INNER JOIN {$wpdb->posts} p ON p.ID = pm.post_id
INNER JOIN {$wpdb->postmeta} pm2 ON p.ID = pm2.post_id
INNER JOIN {$wpdb->users} u ON u.ID = pm.meta_value
WHERE pm.meta_key = '_customer_user'
AND pm.meta_value > 0
AND pm2.meta_key = '_order_total'
AND p.post_type = 'shop_order'
AND p.post_status IN ('wc-completed', 'wc-processing', 'wc-on-hold')
AND DATE(p.post_date) BETWEEN %s AND %s
GROUP BY pm.meta_value, u.display_name, u.user_email
ORDER BY total_spent DESC
LIMIT %d
", $start_date, $end_date, $limit));
}
return $results ?: array();
} catch (Exception $e) {
error_log("WC AI Consultant: Error getting top customers: " . $e->getMessage());
return array();
}
}
private function get_geographic_data($start_date, $end_date) {
global $wpdb;
try {
if ($this->is_hpos_enabled()) {
$results = $wpdb->get_results($wpdb->prepare("
SELECT
oa.country,
oa.state,
COUNT(o.id) as order_count,
SUM(o.total_amount) as total_revenue
FROM {$wpdb->prefix}wc_orders o
INNER JOIN {$wpdb->prefix}wc_order_addresses oa ON o.id = oa.order_id
WHERE o.status IN ('wc-completed', 'wc-processing', 'wc-on-hold')
AND oa.address_type = 'billing'
AND DATE(o.date_created_gmt) BETWEEN %s AND %s
GROUP BY oa.country, oa.state
ORDER BY total_revenue DESC
LIMIT 20
", $start_date, $end_date));
} else {
$results = $wpdb->get_results($wpdb->prepare("
SELECT
pm_country.meta_value as country,
pm_state.meta_value as state,
COUNT(p.ID) as order_count,
SUM(CAST(pm_total.meta_value AS DECIMAL(10,2))) as total_revenue
FROM {$wpdb->posts} p
INNER JOIN {$wpdb->postmeta} pm_total ON p.ID = pm_total.post_id
LEFT JOIN {$wpdb->postmeta} pm_country ON p.ID = pm_country.post_id
LEFT JOIN {$wpdb->postmeta} pm_state ON p.ID = pm_state.post_id
WHERE p.post_type = 'shop_order'
AND p.post_status IN ('wc-completed', 'wc-processing', 'wc-on-hold')
AND pm_total.meta_key = '_order_total'
AND pm_country.meta_key = '_billing_country'
AND pm_state.meta_key = '_billing_state'
AND DATE(p.post_date) BETWEEN %s AND %s
GROUP BY pm_country.meta_value, pm_state.meta_value
ORDER BY total_revenue DESC
LIMIT 20
", $start_date, $end_date));
}
return $results ?: array();
} catch (Exception $e) {
error_log("WC AI Consultant: Error getting geographic data: " . $e->getMessage());
return array();
}
}
private function get_category_performance($start_date, $end_date) {
global $wpdb;
try {
$results = $wpdb->get_results($wpdb->prepare("
SELECT
t.name as category_name,
t.term_id,
SUM(CAST(oim.meta_value AS SIGNED)) as total_sold,
SUM(CAST(oim2.meta_value AS DECIMAL(10,2))) as total_revenue,
COUNT(DISTINCT o.ID) as order_count
FROM {$wpdb->prefix}woocommerce_order_itemmeta oim
INNER JOIN {$wpdb->prefix}woocommerce_order_items oi ON oi.order_item_id = oim.order_item_id
INNER JOIN {$wpdb->posts} o ON o.ID = oi.order_id
INNER JOIN {$wpdb->prefix}woocommerce_order_itemmeta oim_product ON oim_product.order_item_id = oi.order_item_id
INNER JOIN {$wpdb->term_relationships} tr ON tr.object_id = oim_product.meta_value
INNER JOIN {$wpdb->term_taxonomy} tt ON tt.term_taxonomy_id = tr.term_taxonomy_id
INNER JOIN {$wpdb->terms} t ON t.term_id = tt.term_id
LEFT JOIN {$wpdb->prefix}woocommerce_order_itemmeta oim2 ON oim2.order_item_id = oi.order_item_id AND oim2.meta_key = '_line_total'
WHERE oim.meta_key = '_qty'
AND oim_product.meta_key = '_product_id'
AND tt.taxonomy = 'product_cat'
AND o.post_status IN ('wc-completed', 'wc-processing', 'wc-on-hold')
AND DATE(o.post_date) BETWEEN %s AND %s
GROUP BY t.term_id, t.name
ORDER BY total_revenue DESC
LIMIT 15
", $start_date, $end_date));
return $results ?: array();
} catch (Exception $e) {
error_log("WC AI Consultant: Error getting category performance: " . $e->getMessage());
return array();
}
}
private function calculate_customer_lifetime_value() {
global $wpdb;
try {
if ($this->is_hpos_enabled()) {
$result = $wpdb->get_row("
SELECT
AVG(customer_totals.total_spent) as avg_clv,
COUNT(*) as customer_count
FROM (
SELECT
customer_id,
SUM(total_amount) as total_spent
FROM {$wpdb->prefix}wc_orders
WHERE customer_id > 0
AND status IN ('wc-completed', 'wc-processing')
GROUP BY customer_id
) customer_totals
");
} else {
$result = $wpdb->get_row("
SELECT
AVG(customer_totals.total_spent) as avg_clv,
COUNT(*) as customer_count
FROM (
SELECT
pm.meta_value as customer_id,
SUM(CAST(pm2.meta_value AS DECIMAL(10,2))) as total_spent
FROM {$wpdb->postmeta} pm
INNER JOIN {$wpdb->posts} p ON p.ID = pm.post_id
INNER JOIN {$wpdb->postmeta} pm2 ON p.ID = pm2.post_id
WHERE pm.meta_key = '_customer_user'
AND pm.meta_value > 0
AND pm2.meta_key = '_order_total'
AND p.post_type = 'shop_order'
AND p.post_status IN ('wc-completed', 'wc-processing')
GROUP BY pm.meta_value
) customer_totals
");
}
return array(
'average_clv' => floatval($result->avg_clv ?? 0),
'customer_count' => intval($result->customer_count ?? 0)
);
} catch (Exception $e) {
error_log("WC AI Consultant: Error calculating CLV: " . $e->getMessage());
return array('average_clv' => 0, 'customer_count' => 0);
}
}
// Continue with all other methods...
private function format_duration($seconds) {
if (!$seconds) return '0:00';
$minutes = floor($seconds / 60);
$seconds = $seconds % 60;
return sprintf('%d:%02d', $minutes, $seconds);
}
private function get_priority_class($score) {
if ($score >= 8) return 'high';
if ($score >= 6) return 'medium';
return 'low';
}
private function get_todays_consultation() {
global $wpdb;
$table_name = $wpdb->prefix . 'wc_ai_consultations';
$today = date('Y-m-d');
return $wpdb->get_row($wpdb->prepare(
"SELECT * FROM $table_name WHERE consultation_date = %s",
$today
), ARRAY_A);
}
private function save_consultation($wc_data, $ga4_data, $ai_analysis, $audio_result, $consultation_script) {
global $wpdb;
$table_name = $wpdb->prefix . 'wc_ai_consultations';
$today = date('Y-m-d');
$success = $wpdb->replace($table_name, array(
'consultation_date' => $today,
'wc_data' => json_encode($wc_data),
'ga4_data' => $ga4_data ? json_encode($ga4_data) : null,
'ai_analysis' => json_encode($ai_analysis),
'consultation_audio_url' => $audio_result['audio_url'],
'consultation_duration' => $audio_result['duration'],
'insights_count' => $ai_analysis['insights_count'],
'recommendations_count' => $ai_analysis['recommendations_count'],
'priority_score' => $ai_analysis['priority_score'],
'data_accuracy_score' => $ai_analysis['data_accuracy_score'] ?? 0,
'created_at' => current_time('mysql')
));
if ($success === false) {
throw new Exception(__('Failed to save consultation to database.', 'wc-audio-ai-consultant'));
}
return true;
}
private function get_average_order_value($start_date, $end_date) {
global $wpdb;
try {
if ($this->is_hpos_enabled()) {
$result = $wpdb->get_row($wpdb->prepare("
SELECT
COUNT(*) as order_count,
SUM(total_amount) as total_sales
FROM {$wpdb->prefix}wc_orders
WHERE status IN ('wc-completed', 'wc-processing', 'wc-on-hold')
AND date_created_gmt BETWEEN %s AND %s
", $start_date . ' 00:00:00', $end_date . ' 23:59:59'));
} else {
$result = $wpdb->get_row($wpdb->prepare("
SELECT
COUNT(*) as order_count,
SUM(CAST(pm.meta_value AS DECIMAL(10,2))) as total_sales
FROM {$wpdb->postmeta} pm
INNER JOIN {$wpdb->posts} p ON p.ID = pm.post_id
WHERE pm.meta_key = '_order_total'
AND p.post_type = 'shop_order'
AND p.post_status IN ('wc-completed', 'wc-processing', 'wc-on-hold')
AND DATE(p.post_date) BETWEEN %s AND %s
", $start_date, $end_date));
}
if ($result && $result->order_count > 0) {
return floatval($result->total_sales) / intval($result->order_count);
}
return 0;
} catch (Exception $e) {
error_log("WC AI Consultant: Error calculating AOV: " . $e->getMessage());
return 0;
}
}
private function get_top_products($start_date, $end_date, $limit = 10) {
global $wpdb;
try {
$results = $wpdb->get_results($wpdb->prepare("
SELECT
p.post_title,
p.ID as product_id,
SUM(CAST(oim.meta_value AS SIGNED)) as total_sold,
SUM(CAST(oim2.meta_value AS DECIMAL(10,2))) as total_revenue
FROM {$wpdb->prefix}woocommerce_order_itemmeta oim
INNER JOIN {$wpdb->prefix}woocommerce_order_items oi ON oi.order_item_id = oim.order_item_id
INNER JOIN {$wpdb->posts} o ON o.ID = oi.order_id
INNER JOIN {$wpdb->prefix}woocommerce_order_itemmeta oim_product ON oim_product.order_item_id = oi.order_item_id
INNER JOIN {$wpdb->posts} p ON p.ID = oim_product.meta_value
LEFT JOIN {$wpdb->prefix}woocommerce_order_itemmeta oim2 ON oim2.order_item_id = oi.order_item_id AND oim2.meta_key = '_line_total'
WHERE oim.meta_key = '_qty'
AND oim_product.meta_key = '_product_id'
AND o.post_status IN ('wc-completed', 'wc-processing', 'wc-on-hold')
AND DATE(o.post_date) BETWEEN %s AND %s
GROUP BY oim_product.meta_value, p.post_title
ORDER BY total_sold DESC
LIMIT %d
", $start_date, $end_date, $limit));
return $results ?: array();
} catch (Exception $e) {
error_log("WC AI Consultant: Error getting top products: " . $e->getMessage());
return array();
}
}
private function get_out_of_stock_products() {
global $wpdb;
try {
$results = $wpdb->get_results("
SELECT
p.post_title,
p.ID as product_id,
pm.meta_value as stock_status
FROM {$wpdb->posts} p
INNER JOIN {$wpdb->postmeta} pm ON p.ID = pm.post_id
WHERE p.post_type = 'product'
AND p.post_status = 'publish'
AND pm.meta_key = '_stock_status'
AND pm.meta_value = 'outofstock'
ORDER BY p.post_title
LIMIT 20
");
return $results ?: array();
} catch (Exception $e) {
error_log("WC AI Consultant: Error getting out of stock products: " . $e->getMessage());
return array();
}
}
private function get_low_stock_products($threshold = 5) {
global $wpdb;
try {
$results = $wpdb->get_results($wpdb->prepare("
SELECT
p.post_title,
p.ID as product_id,
CAST(pm_stock.meta_value AS SIGNED) as stock_quantity,
pm_status.meta_value as stock_status
FROM {$wpdb->posts} p
INNER JOIN {$wpdb->postmeta} pm_stock ON p.ID = pm_stock.post_id
INNER JOIN {$wpdb->postmeta} pm_status ON p.ID = pm_status.post_id
WHERE p.post_type = 'product'
AND p.post_status = 'publish'
AND pm_stock.meta_key = '_stock'
AND pm_status.meta_key = '_stock_status'
AND pm_status.meta_value = 'instock'
AND CAST(pm_stock.meta_value AS SIGNED) <= %d
AND CAST(pm_stock.meta_value AS SIGNED) > 0
ORDER BY CAST(pm_stock.meta_value AS SIGNED) ASC
LIMIT 20
", $threshold));
return $results ?: array();
} catch (Exception $e) {
error_log("WC AI Consultant: Error getting low stock products: " . $e->getMessage());
return array();
}
}
private function get_new_products($start_date, $end_date) {
global $wpdb;
try {
$results = $wpdb->get_results($wpdb->prepare("
SELECT
p.post_title,
p.ID as product_id,
p.post_date,
COALESCE(sales.total_sold, 0) as sales_since_launch
FROM {$wpdb->posts} p
LEFT JOIN (
SELECT
oim_product.meta_value as product_id,
SUM(CAST(oim.meta_value AS SIGNED)) as total_sold
FROM {$wpdb->prefix}woocommerce_order_itemmeta oim
INNER JOIN {$wpdb->prefix}woocommerce_order_items oi ON oi.order_item_id = oim.order_item_id
INNER JOIN {$wpdb->posts} o ON o.ID = oi.order_id
INNER JOIN {$wpdb->prefix}woocommerce_order_itemmeta oim_product ON oim_product.order_item_id = oi.order_item_id
WHERE oim.meta_key = '_qty'
AND oim_product.meta_key = '_product_i
“Talk To Me In Korean Level 1” is an ideal starting point for beginners in Korean. This book emphasizes everyday colloquial language, allowing learners to quickly grasp and use Korean in daily conversations. It includes basic grammar points and essential greetings like “Hello” and “Thank you,” making it easy for even complete beginners to start forming sentences in Korean. The book offers a variety of content, including dialogues, quizzes, and readings about Korean life, all aimed at making the learning process enjoyable and practical.
Key Features
Focus on Spoken Language: Concentrates on colloquial Korean for immediate communication.
Audio Support: Free MP3 downloads for all expressions and dialogues, accessible at TalkToMeInKorean.com.
Diverse Learning Materials: Engaging mix of dialogues, quizzes, and cultural insights.
Self-Study Friendly: Designed for those studying independently without a formal classroom setting.
Lesson Breakdown
LESSON 1: Greetings – “Hello, Thank you”
LESSON 2: Basic Responses – “Yes, No, What?”
LESSON 3: Farewells – “Goodbye, See you”
LESSON 4: Apologies – “I’m sorry, Excuse me”
LESSON 5: Self-Identification – “It’s me, What is it?”
LESSON 6: Identifying Objects – “This is…, What is this?”
LESSON 25: Directions and Time – “From A To B, From C Until D”
Conclusion
With its user-friendly approach, “Talk To Me In Korean Level 1” is a valuable tool for anyone beginning their journey in learning Korean. The book’s structure ensures a smooth transition from basic greetings to more complex grammatical structures, setting a solid foundation for further language studies.
Publication date : September 21, 2015 Number of pages, weight, size 164 pages | 377g | 188*220*10mm
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