feat(pay): VIP renew discount tiers and upgrade package pricing

Apply vip_renew discount/reduce to same-level packages, gate renew/upgrade
availability, support dedicated vip_upgrade_product line, and show tags/CTAs.

assets/css/routes/user-center/credits.css

@@ -512,3 +512,32 @@
   color: var(--color-ink-3, #6b7280);
   margin: 0 0 16px;
 }
+
+.uc-vip-shop__note {
+  margin: 0 0 12px;
+  font-size: 12px;
+  color: var(--color-ink-3, #6b7280);
+  line-height: 1.5;
+}
+.uc-vip-shop__item {
+  position: relative;
+}
+.uc-vip-shop__item-tag {
+  position: absolute;
+  top: 8px;
+  right: 8px;
+  font-size: 10px;
+  font-weight: 700;
+  color: #92400e;
+  background: #fef3c7;
+  border-radius: 999px;
+  padding: 2px 6px;
+}
+.uc-vip-shop__item-show {
+  display: inline-block;
+  margin-left: 6px;
+  font-size: 12px;
+  font-weight: 500;
+  color: #9ca3af;
+  text-decoration: line-through;
+}

inc/classes/class-aksrt-vip-service.php

@@ -109,63 +109,141 @@ class AKSRT_Vip_Service {
     public function get_catalog(int $user_id = 0): array {
         $vip = class_exists('AKSRT_Settings')
             ? AKSRT_Settings::get_payment_vip_settings()
-            : ['enabled' => false, 'packages_raw' => '', 'levels' => []];
+            : ['enabled' => false, 'packages_raw' => '', 'levels' => [], 'renew' => [], 'upgrade' => []];
 
         $level = function_exists('aksrt_get_user_vip_level') ? aksrt_get_user_vip_level($user_id) : 0;
         $expires = $user_id > 0 ? (int) get_user_meta($user_id, 'aksrt_vip_expires', true) : 0;
+        $is_permanent = ($level > 0 && $expires <= 0);
         $packages = $this->parse_packages((string) ($vip['packages_raw'] ?? ''));
         $levels = is_array($vip['levels'] ?? null) ? $vip['levels'] : [];
+        $renew = is_array($vip['renew'] ?? null) ? $vip['renew'] : [];
+        $upgrade = is_array($vip['upgrade'] ?? null) ? $vip['upgrade'] : [];
+        $renew_enabled = !isset($renew['enabled']) || !empty($renew['enabled']);
+        $upgrade_enabled = !isset($upgrade['enabled']) || !empty($upgrade['enabled']);
 
         $level_packages = [];
         foreach ([1, 2] as $lv) {
             if (empty($levels[$lv]['enabled'])) {
                 continue;
             }
+            // Permanent VIP at same/higher level: only show higher-level upgrade packages.
+            if ($is_permanent && $lv <= $level) {
+                continue;
+            }
+            // Existing VIP without renew: hide same-level packages.
+            if ($level > 0 && $lv === $level && !$renew_enabled) {
+                continue;
+            }
+            // Existing VIP without upgrade: hide higher-level packages.
+            if ($level > 0 && $lv > $level && !$upgrade_enabled) {
+                continue;
+            }
+
             $name = (string) ($levels[$lv]['name'] ?? ('VIP' . $lv));
             $items = [];
             foreach ($packages as $idx => $pkg) {
+                $base_price = (float) $pkg['price'];
+                $days = (int) $pkg['days'];
+                // Permanent members don't renew timed packages at same level (already filtered).
+                // Non-permanent same-level: renew pricing.
+                $action = 'pay';
+                if ($level > 0 && $lv === $level) {
+                    $action = 'renew';
+                } elseif ($level > 0 && $lv > $level) {
+                    $action = 'upgrade';
+                }
+
+                $priced = $this->apply_action_price($base_price, $action, $renew, $upgrade, $lv, $level, $expires, $is_permanent, $days);
+                if ($priced === null) {
+                    continue;
+                }
+
                 $items[] = [
-                    'package_id'  => $this->encode_package_id($lv, $idx + 1),
-                    'level'       => $lv,
-                    'index'       => $idx + 1,
-                    'price'       => (float) $pkg['price'],
-                    'days'        => (int) $pkg['days'],
-                    'title'       => (string) $pkg['title'],
-                    'price_label' => $this->format_cash_label((float) $pkg['price']),
-                    'days_label'  => ((int) $pkg['days'] <= 0)
+                    'package_id'     => $this->encode_package_id($lv, $idx + 1),
+                    'level'          => $lv,
+                    'index'          => $idx + 1,
+                    'action'         => $action,
+                    'price'          => (float) $priced['price'],
+                    'base_price'     => $base_price,
+                    'show_price'     => (float) ($priced['show_price'] ?? 0),
+                    'discount_tag'   => (string) ($priced['tag'] ?? ''),
+                    'days'           => $days,
+                    'title'          => (string) $pkg['title'],
+                    'price_label'    => $this->format_cash_label((float) $priced['price']),
+                    'show_price_label' => !empty($priced['show_price'])
+                        ? $this->format_cash_label((float) $priced['show_price'])
+                        : '',
+                    'days_label'     => ($days <= 0)
                         ? __('永久', 'aksrt')
                         : sprintf(
                             /* translators: %d: days */
                             __('%d 天', 'aksrt'),
-                            (int) $pkg['days']
+                            $days
                         ),
+                    'cta_label'      => $action === 'renew'
+                        ? __('立即续费', 'aksrt')
+                        : ($action === 'upgrade' ? __('立即升级', 'aksrt') : __('立即开通', 'aksrt')),
                 ];
             }
+
+            // Optional dedicated upgrade permanent product line from settings.upgrade.product
+            // Format: price|days|title  (single package for VIP2 upgrade).
+            if ($level === 1 && $lv === 2 && $upgrade_enabled) {
+                $upgrade_pkg = $this->parse_upgrade_product_line((string) ($upgrade['product'] ?? ''));
+                if ($upgrade_pkg) {
+                    $items[] = [
+                        'package_id'         => $this->encode_package_id(2, 901),
+                        'level'              => 2,
+                        'index'              => 901,
+                        'action'             => 'upgrade',
+                        'price'              => (float) $upgrade_pkg['price'],
+                        'base_price'         => (float) $upgrade_pkg['price'],
+                        'show_price'         => 0.0,
+                        'discount_tag'       => __('升级专享', 'aksrt'),
+                        'days'               => (int) $upgrade_pkg['days'],
+                        'title'              => (string) $upgrade_pkg['title'],
+                        'price_label'        => $this->format_cash_label((float) $upgrade_pkg['price']),
+                        'show_price_label'   => '',
+                        'days_label'         => ((int) $upgrade_pkg['days'] <= 0)
+                            ? __('永久', 'aksrt')
+                            : sprintf(__('%d 天', 'aksrt'), (int) $upgrade_pkg['days']),
+                        'cta_label'          => __('立即升级', 'aksrt'),
+                        'is_upgrade_product' => true,
+                    ];
+                }
+            }
+
             if ($items === []) {
                 continue;
             }
             $level_packages[] = [
-                'level' => $lv,
-                'name'  => $name,
-                'items' => $items,
+                'level'  => $lv,
+                'name'   => $name,
+                'action' => ($level > 0 && $lv === $level) ? 'renew' : (($level > 0 && $lv > $level) ? 'upgrade' : 'pay'),
+                'items'  => $items,
             ];
         }
 
         $methods = $this->available_payment_methods();
 
         return [
-            'enabled'         => !empty($vip['enabled']),
-            'desc'            => (string) ($vip['desc'] ?? ''),
-            'help_text'       => (string) ($vip['help_text'] ?? ''),
-            'user_level'      => $level,
-            'user_expires'    => $expires,
+            'enabled'            => !empty($vip['enabled']),
+            'desc'               => (string) ($vip['desc'] ?? ''),
+            'help_text'          => (string) ($vip['help_text'] ?? ''),
+            'user_level'         => $level,
+            'user_expires'       => $expires,
+            'user_is_permanent'  => $is_permanent,
             'user_expires_label' => $this->format_expires_label($expires, $level),
-            'level_packages'  => $level_packages,
-            'payment_methods' => $methods,
-            'vip_url'         => function_exists('aksrt_get_user_center_tab_url')
+            'renew_enabled'      => $renew_enabled,
+            'upgrade_enabled'    => $upgrade_enabled,
+            'renew_desc'         => (string) ($renew['desc'] ?? ''),
+            'upgrade_desc'       => (string) ($upgrade['desc'] ?? ''),
+            'level_packages'     => $level_packages,
+            'payment_methods'    => $methods,
+            'vip_url'            => function_exists('aksrt_get_user_center_tab_url')
                 ? aksrt_get_user_center_tab_url('credits')
                 : (function_exists('aksrt_get_user_center_url') ? aksrt_get_user_center_url() : home_url('/')),
-            'logged_in'       => $user_id > 0,
+            'logged_in'          => $user_id > 0,
         ];
     }
 
@@ -186,7 +264,7 @@ class AKSRT_Vip_Service {
 
         $vip = class_exists('AKSRT_Settings')
             ? AKSRT_Settings::get_payment_vip_settings()
-            : ['enabled' => false, 'packages_raw' => '', 'levels' => []];
+            : ['enabled' => false, 'packages_raw' => '', 'levels' => [], 'renew' => [], 'upgrade' => []];
         if (empty($vip['enabled'])) {
             return new WP_Error('aksrt_vip_disabled', __('会员功能未启用', 'aksrt'), ['status' => 400]);
         }
@@ -195,13 +273,61 @@ class AKSRT_Vip_Service {
             return new WP_Error('aksrt_vip_level_disabled', __('该会员等级未启用', 'aksrt'), ['status' => 400]);
         }
 
-        $packages = $this->parse_packages((string) ($vip['packages_raw'] ?? ''));
-        $pkg = $packages[$index - 1] ?? null;
-        if (!$pkg) {
-            return new WP_Error('aksrt_invalid_package', __('套餐不存在', 'aksrt'), ['status' => 400]);
+        $user_level = function_exists('aksrt_get_user_vip_level') ? aksrt_get_user_vip_level($user_id) : 0;
+        $expires = (int) get_user_meta($user_id, 'aksrt_vip_expires', true);
+        $is_permanent = ($user_level > 0 && $expires <= 0);
+        $renew = is_array($vip['renew'] ?? null) ? $vip['renew'] : [];
+        $upgrade = is_array($vip['upgrade'] ?? null) ? $vip['upgrade'] : [];
+        $renew_enabled = !isset($renew['enabled']) || !empty($renew['enabled']);
+        $upgrade_enabled = !isset($upgrade['enabled']) || !empty($upgrade['enabled']);
+
+        if ($is_permanent && $level <= $user_level) {
+            return new WP_Error('aksrt_vip_permanent', __('您已是永久会员，无需续费。', 'aksrt'), ['status' => 400]);
+        }
+        if ($user_level > 0 && $level === $user_level && !$renew_enabled) {
+            return new WP_Error('aksrt_vip_renew_disabled', __('续费功能未开启。', 'aksrt'), ['status' => 400]);
+        }
+        if ($user_level > 0 && $level > $user_level && !$upgrade_enabled) {
+            return new WP_Error('aksrt_vip_upgrade_disabled', __('升级功能未开启。', 'aksrt'), ['status' => 400]);
+        }
+        if ($user_level > 0 && $level < $user_level) {
+            return new WP_Error('aksrt_vip_downgrade', __('不支持降级购买。', 'aksrt'), ['status' => 400]);
+        }
+
+        $action = 'pay';
+        if ($user_level > 0 && $level === $user_level) {
+            $action = 'renew';
+        } elseif ($user_level > 0 && $level > $user_level) {
+            $action = 'upgrade';
+        }
+
+        // Dedicated upgrade product (index 901).
+        if ($index === 901) {
+            $upgrade_pkg = $this->parse_upgrade_product_line((string) ($upgrade['product'] ?? ''));
+            if (!$upgrade_pkg || $level !== 2) {
+                return new WP_Error('aksrt_invalid_package', __('升级套餐不存在', 'aksrt'), ['status' => 400]);
+            }
+            $pkg = $upgrade_pkg;
+            $amount = round((float) $pkg['price'], 2);
+            $days = (int) $pkg['days'];
+            $base_price = $amount;
+            $discount_tag = __('升级专享', 'aksrt');
+        } else {
+            $packages = $this->parse_packages((string) ($vip['packages_raw'] ?? ''));
+            $pkg = $packages[$index - 1] ?? null;
+            if (!$pkg) {
+                return new WP_Error('aksrt_invalid_package', __('套餐不存在', 'aksrt'), ['status' => 400]);
+            }
+            $base_price = (float) $pkg['price'];
+            $days = (int) $pkg['days'];
+            $priced = $this->apply_action_price($base_price, $action, $renew, $upgrade, $level, $user_level, $expires, $is_permanent, $days);
+            if ($priced === null) {
+                return new WP_Error('aksrt_invalid_package', __('当前无法购买该套餐', 'aksrt'), ['status' => 400]);
+            }
+            $amount = round((float) $priced['price'], 2);
+            $discount_tag = (string) ($priced['tag'] ?? '');
         }
 
-        $amount = round((float) $pkg['price'], 2);
         if ($amount <= 0) {
             return new WP_Error('aksrt_invalid_price', __('套餐价格无效', 'aksrt'), ['status' => 400]);
         }
@@ -215,14 +341,16 @@ class AKSRT_Vip_Service {
             $payment_method = 'balance';
         }
 
-        $days = (int) $pkg['days'];
         $note = wp_json_encode([
             'vip_pay' => 1,
             'level' => $level,
             'days' => $days,
             'package_index' => $index,
-            'package_title' => (string) $pkg['title'],
+            'package_title' => (string) ($pkg['title'] ?? ''),
             'package_id' => $package_id,
+            'action' => $action,
+            'base_price' => $base_price,
+            'discount_tag' => $discount_tag,
         ], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
 
         $order_number = AKSRT_Order_Repository::get_instance()->create([
@@ -246,11 +374,13 @@ class AKSRT_Vip_Service {
         }
 
         $level_name = (string) ($levels[$level]['name'] ?? ('VIP' . $level));
+        $action_label = $action === 'renew' ? __('续费', 'aksrt') : ($action === 'upgrade' ? __('升级', 'aksrt') : __('开通', 'aksrt'));
         $order['subject'] = sprintf(
-            /* translators: 1: vip name 2: package title */
-            __('开通%s · %s', 'aksrt'),
+            /* translators: 1: action 2: vip name 3: package title */
+            __('%1$s%2$s · %3$s', 'aksrt'),
+            $action_label,
             $level_name,
-            (string) $pkg['title']
+            (string) ($pkg['title'] ?? '')
         );
         $order['payment_method'] = $payment_method;
 
@@ -317,7 +447,10 @@ class AKSRT_Vip_Service {
                 'amount' => $amount,
                 'level' => $level,
                 'days' => $days,
-                'message' => __('会员开通成功', 'aksrt'),
+                'action' => $action,
+                'message' => $action === 'renew'
+                    ? __('会员续费成功', 'aksrt')
+                    : ($action === 'upgrade' ? __('会员升级成功', 'aksrt') : __('会员开通成功', 'aksrt')),
                 'reload' => true,
             ],
         ];
@@ -428,6 +561,113 @@ class AKSRT_Vip_Service {
         return $out;
     }
 
+    /**
+     * Single upgrade product line: price|days|title
+     *
+     * @return array{price:float,days:int,title:string}|null
+     */
+    public function parse_upgrade_product_line(string $raw): ?array {
+        $raw = trim($raw);
+        if ($raw === '') {
+            return null;
+        }
+        // Allow multiline; take first valid.
+        $lines = preg_split('/\r\n|\r|\n/', $raw) ?: [];
+        foreach ($lines as $line) {
+            $parsed = $this->parse_packages((string) $line);
+            if (!empty($parsed[0])) {
+                return $parsed[0];
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Apply renew discount/reduce to same-level packages.
+     *
+     * @param array<string,mixed> $renew
+     * @param array<string,mixed> $upgrade
+     * @return array{price:float,show_price:float,tag:string}|null
+     */
+    private function apply_action_price(
+        float $base_price,
+        string $action,
+        array $renew,
+        array $upgrade,
+        int $target_level,
+        int $user_level,
+        int $expires,
+        bool $is_permanent,
+        int $days
+    ): ?array {
+        if ($base_price <= 0) {
+            return null;
+        }
+
+        // Permanent same-level packages never make sense for renew.
+        if ($action === 'renew' && $is_permanent) {
+            return null;
+        }
+
+        if ($action !== 'renew') {
+            return [
+                'price' => round($base_price, 2),
+                'show_price' => 0.0,
+                'tag' => '',
+            ];
+        }
+
+        $type = sanitize_key((string) ($renew['price_type'] ?? 'discount'));
+        $price = $base_price;
+        $show = $base_price;
+        $tag = '';
+
+        if ($type === 'discount') {
+            // Settings store "8" meaning 8折 (80%) when <= 10; or percent when > 10.
+            $discount = (float) ($renew['discount'] ?? 8);
+            if ($discount <= 0) {
+                $discount = 8;
+            }
+            if ($discount <= 10) {
+                $price = round($base_price * ($discount / 10), 2);
+                $tag = sprintf(
+                    /* translators: %s: discount like 8 */
+                    __('%s折续费', 'aksrt'),
+                    rtrim(rtrim(number_format($discount, 1, '.', ''), '0'), '.')
+                );
+            } else {
+                $price = round($base_price * (min(100, $discount) / 100), 2);
+                $tag = sprintf(__('%s%% 续费价', 'aksrt'), (string) (int) $discount);
+            }
+        } elseif ($type === 'reduce') {
+            $reduce = max(0, (float) ($renew['reduce'] ?? 20));
+            $price = round(max(0.01, $base_price - $reduce), 2);
+            $tag = sprintf(
+                /* translators: %s: amount */
+                __('续费立减%s', 'aksrt'),
+                $this->format_cash_label($reduce)
+            );
+        } else {
+            // same
+            $show = 0.0;
+            $tag = __('续费同价', 'aksrt');
+        }
+
+        if ($price < 0.01) {
+            $price = 0.01;
+        }
+        if ($show > 0 && $price >= $show) {
+            $show = 0.0;
+            $tag = __('续费', 'aksrt');
+        }
+
+        return [
+            'price' => $price,
+            'show_price' => $show > $price ? $show : 0.0,
+            'tag' => $tag,
+        ];
+    }
+
     public function encode_package_id(int $level, int $index): int {
         return (max(1, min(2, $level)) * 1000) + max(1, $index);
     }

inc/helpers/user-center-renderers/credits-vip.php

@@ -39,10 +39,14 @@ if ($vip_level >= 1 && !empty($vip_settings['levels'][$vip_level]['name'])) {
 }
 
 $packages = [];
+$renew_desc = '';
+$upgrade_desc = '';
 if (class_exists('AKSRT_Vip_Service')) {
 	$catalog = AKSRT_Vip_Service::get_instance()->get_catalog($user_id);
 	$packages = is_array($catalog['level_packages'] ?? null) ? $catalog['level_packages'] : [];
 	$methods = is_array($catalog['payment_methods'] ?? null) ? $catalog['payment_methods'] : [];
+	$renew_desc = (string) ($catalog['renew_desc'] ?? '');
+	$upgrade_desc = (string) ($catalog['upgrade_desc'] ?? '');
 } else {
 	$methods = [['id' => 'balance', 'name' => __('站内余额', 'aksrt')]];
 }
@@ -52,6 +56,11 @@ if (class_exists('AKSRT_Settings')) {
 	$paid_display = AKSRT_Settings::get_paid_content_settings();
 	$cash_symbol = (string) ($paid_display['display']['currency_symbol'] ?? '￥');
 }
+
+$shop_title = __('开通会员', 'aksrt');
+if ($vip_level > 0) {
+	$shop_title = __('续费 / 升级会员', 'aksrt');
+}
 ?>
 <div class="uc-vip-card<?php echo $is_vip_user ? ' uc-vip-card--active' : ''; ?>" data-aksrt-vip-panel>
 	<div class="uc-vip-card__bg"></div>
@@ -84,30 +93,49 @@ if (class_exists('AKSRT_Settings')) {
 	<div class="uc-vip-shop" data-aksrt-vip-shop>
 		<div class="uc-vip-shop__title">
 			<i class="fas fa-gem" aria-hidden="true"></i>
-			<span><?php echo $is_vip_user ? esc_html__('续费 / 升级会员', 'aksrt') : esc_html__('开通会员', 'aksrt'); ?></span>
+			<span><?php echo esc_html($shop_title); ?></span>
 		</div>
 
+		<?php if ($vip_level > 0 && $renew_desc !== '') : ?>
+			<p class="uc-vip-shop__note"><?php echo esc_html($renew_desc); ?></p>
+		<?php endif; ?>
+		<?php if ($vip_level === 1 && $upgrade_desc !== '') : ?>
+			<p class="uc-vip-shop__note"><?php echo esc_html($upgrade_desc); ?></p>
+		<?php endif; ?>
+
 		<?php foreach ($packages as $group) :
 			$g_level = (int) ($group['level'] ?? 0);
 			$g_name = (string) ($group['name'] ?? ('VIP' . $g_level));
+			$g_action = (string) ($group['action'] ?? 'pay');
 			$items = is_array($group['items'] ?? null) ? $group['items'] : [];
 			if ($items === []) {
 				continue;
 			}
+			$group_badge = '';
+			if ($g_action === 'renew') {
+				$group_badge = __('续费', 'aksrt');
+			} elseif ($g_action === 'upgrade') {
+				$group_badge = __('升级', 'aksrt');
+			} elseif ($vip_level >= $g_level) {
+				$group_badge = __('当前档', 'aksrt');
+			}
 			?>
-			<div class="uc-vip-shop__group" data-vip-level="<?php echo esc_attr((string) $g_level); ?>">
+			<div class="uc-vip-shop__group" data-vip-level="<?php echo esc_attr((string) $g_level); ?>" data-action="<?php echo esc_attr($g_action); ?>">
 				<div class="uc-vip-shop__group-title">
 					<?php echo esc_html($g_name); ?>
-					<?php if ($vip_level >= $g_level) : ?>
-						<span class="uc-vip-shop__badge"><?php esc_html_e('当前档', 'aksrt'); ?></span>
+					<?php if ($group_badge !== '') : ?>
+						<span class="uc-vip-shop__badge"><?php echo esc_html($group_badge); ?></span>
 					<?php endif; ?>
 				</div>
 				<div class="uc-vip-shop__grid">
 					<?php foreach ($items as $item) :
 						$pid = (int) ($item['package_id'] ?? 0);
 						$price_label = (string) ($item['price_label'] ?? ($cash_symbol . ($item['price'] ?? 0)));
+						$show_price_label = (string) ($item['show_price_label'] ?? '');
+						$discount_tag = (string) ($item['discount_tag'] ?? '');
 						$days_label = (string) ($item['days_label'] ?? '');
 						$title = (string) ($item['title'] ?? '');
+						$cta = (string) ($item['cta_label'] ?? __('立即开通', 'aksrt'));
 						?>
 						<button
 							type="button"
@@ -116,11 +144,20 @@ if (class_exists('AKSRT_Settings')) {
 							data-package-id="<?php echo esc_attr((string) $pid); ?>"
 							data-price-label="<?php echo esc_attr($price_label); ?>"
 							data-title="<?php echo esc_attr($title); ?>"
+							data-action="<?php echo esc_attr((string) ($item['action'] ?? 'pay')); ?>"
 						>
+							<?php if ($discount_tag !== '') : ?>
+								<span class="uc-vip-shop__item-tag"><?php echo esc_html($discount_tag); ?></span>
+							<?php endif; ?>
 							<span class="uc-vip-shop__item-title"><?php echo esc_html($title); ?></span>
 							<span class="uc-vip-shop__item-days"><?php echo esc_html($days_label); ?></span>
-							<span class="uc-vip-shop__item-price"><?php echo esc_html($price_label); ?></span>
-							<span class="uc-vip-shop__item-cta"><?php esc_html_e('立即开通', 'aksrt'); ?></span>
+							<span class="uc-vip-shop__item-price">
+								<?php echo esc_html($price_label); ?>
+								<?php if ($show_price_label !== '') : ?>
+									<small class="uc-vip-shop__item-show"><?php echo esc_html($show_price_label); ?></small>
+								<?php endif; ?>
+							</span>
+							<span class="uc-vip-shop__item-cta"><?php echo esc_html($cta); ?></span>
 						</button>
 					<?php endforeach; ?>
 				</div>