<?php
/**
 * Ticket (工单) tables.
 *
 * 6 张表取代旧的 aksrt_order_aftersale：工单不再绑定订单退款流程，
 * 标题 + 部门 + 描述为必填，关联订单为可选项。
 *
 * @package AKSRT
 */

namespace AKSRT\Core;

defined('ABSPATH') || exit;

trait DBMigratorTicket {

    private static function migrate_ticket_tables(string $prefix, string $charset_collate): void {
        $ticket = "CREATE TABLE {$prefix}aksrt_ticket (
            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
            ticket_num VARCHAR(32) NOT NULL,
            user_id BIGINT UNSIGNED NOT NULL,
            title VARCHAR(200) NOT NULL,
            ticket_type_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
            content TEXT NOT NULL,
            status VARCHAR(24) NOT NULL DEFAULT 'pending',
            order_number VARCHAR(32) NOT NULL DEFAULT '',
            attachment LONGTEXT DEFAULT NULL,
            last_reply_time DATETIME DEFAULT NULL,
            post_time DATETIME NOT NULL,
            notes TEXT DEFAULT NULL,
            admin_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
            last_reply_admin_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
            post_admin_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
            urge_count INT UNSIGNED NOT NULL DEFAULT 0,
            last_urge_time DATETIME DEFAULT NULL,
            created_at DATETIME NOT NULL,
            updated_at DATETIME DEFAULT NULL,
            PRIMARY KEY  (id),
            UNIQUE KEY uniq_ticket_num (ticket_num),
            KEY idx_user_created (user_id, created_at),
            KEY idx_status_created (status, created_at),
            KEY idx_type_status (ticket_type_id, status),
            KEY idx_order (order_number)
        ) ENGINE=InnoDB {$charset_collate};";
        dbDelta($ticket);

        $reply = "CREATE TABLE {$prefix}aksrt_ticket_reply (
            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
            ticket_id BIGINT UNSIGNED NOT NULL,
            author_type VARCHAR(16) NOT NULL DEFAULT 'user',
            author_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
            content TEXT NOT NULL,
            attachment LONGTEXT DEFAULT NULL,
            quote_reply_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
            created_at DATETIME NOT NULL,
            PRIMARY KEY  (id),
            KEY idx_ticket_created (ticket_id, created_at),
            KEY idx_quote (quote_reply_id)
        ) ENGINE=InnoDB {$charset_collate};";
        dbDelta($reply);

        // status_key 是工单上 aksrt_ticket.status 的外延键：管理员改状态名只动 name，
        // 存量工单的 status 不受影响。默认状态（is_default）不可改删。
        $status = "CREATE TABLE {$prefix}aksrt_ticket_status (
            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
            status_key VARCHAR(24) NOT NULL,
            name VARCHAR(60) NOT NULL,
            color VARCHAR(20) NOT NULL DEFAULT '#6b7280',
            is_closed TINYINT(1) NOT NULL DEFAULT 0,
            is_default TINYINT(1) NOT NULL DEFAULT 0,
            sort_order INT NOT NULL DEFAULT 0,
            created_at DATETIME NOT NULL,
            updated_at DATETIME DEFAULT NULL,
            PRIMARY KEY  (id),
            UNIQUE KEY uniq_status_key (status_key)
        ) ENGINE=InnoDB {$charset_collate};";
        dbDelta($status);

        $type = "CREATE TABLE {$prefix}aksrt_ticket_type (
            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
            name VARCHAR(120) NOT NULL,
            description TEXT DEFAULT NULL,
            admin_ids LONGTEXT DEFAULT NULL,
            sort_order INT NOT NULL DEFAULT 0,
            created_at DATETIME NOT NULL,
            updated_at DATETIME DEFAULT NULL,
            PRIMARY KEY  (id)
        ) ENGINE=InnoDB {$charset_collate};";
        dbDelta($type);

        $prereply = "CREATE TABLE {$prefix}aksrt_ticket_prereply (
            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
            content TEXT NOT NULL,
            sort_order INT NOT NULL DEFAULT 0,
            created_at DATETIME NOT NULL,
            PRIMARY KEY  (id)
        ) ENGINE=InnoDB {$charset_collate};";
        dbDelta($prereply);

        $note = "CREATE TABLE {$prefix}aksrt_ticket_note (
            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
            ticket_id BIGINT UNSIGNED NOT NULL,
            admin_id BIGINT UNSIGNED NOT NULL DEFAULT 0,
            content TEXT NOT NULL,
            created_at DATETIME NOT NULL,
            PRIMARY KEY  (id),
            KEY idx_ticket_created (ticket_id, created_at)
        ) ENGINE=InnoDB {$charset_collate};";
        dbDelta($note);

        self::seed_ticket_statuses($prefix);
        self::seed_ticket_types($prefix);
    }

    /**
     * 工单状态 seeds：按 status_key 幂等补齐，不覆盖管理员已改过的名称与颜色。
     * 「待接单」标记 is_default，后台拒绝改删。
     *
     * @return void
     */
    private static function seed_ticket_statuses(string $prefix): void {
        global $wpdb;
        $table = $prefix . 'aksrt_ticket_status';
        $now = current_time('mysql');
        $seeds = [
            ['pending', '待接单', '#f59e0b', 0, 1],
            ['handling', '处理中', '#8b5cf6', 0, 0],
            ['user_replied', '待回复', '#3b82f6', 0, 0],
            ['admin_replied', '已回复', '#10b981', 0, 0],
            ['closed', '已关闭', '#6b7280', 1, 0],
        ];

        $exists = $wpdb->get_col("SELECT status_key FROM {$table}"); // phpcs:ignore WordPress.DB.DirectDatabaseQuery,WordPress.DB.PreparedSQL
        if (!is_array($exists)) {
            $exists = [];
        }

        $sort = 0;
        foreach ($seeds as [$key, $label, $color, $is_closed, $is_default]) {
            if (in_array($key, $exists, true)) {
                continue;
            }
            $wpdb->insert($table, [
                'status_key' => $key,
                'name' => $label,
                'color' => $color,
                'is_closed' => $is_closed,
                'is_default' => $is_default,
                'sort_order' => $sort++,
                'created_at' => $now,
            ], ['%s', '%s', '%s', '%d', '%d', '%d', '%s']);
        }
    }

    /** 工单部门 seeds：按 name 幂等补齐。 */
    private static function seed_ticket_types(string $prefix): void {
        global $wpdb;
        $table = $prefix . 'aksrt_ticket_type';
        $now = current_time('mysql');
        $seeds = ['技术支持', '账号问题', '财务问题', '产品建议', '其他'];

        $exists = $wpdb->get_col("SELECT name FROM {$table}"); // phpcs:ignore WordPress.DB.DirectDatabaseQuery,WordPress.DB.PreparedSQL
        if (!is_array($exists)) {
            $exists = [];
        }

        $sort = 0;
        foreach ($seeds as $label) {
            if (in_array($label, $exists, true)) {
                continue;
            }
            $wpdb->insert($table, [
                'name' => $label,
                'sort_order' => $sort++,
                'created_at' => $now,
            ], ['%s', '%d', '%s']);
        }
    }
}