/**
 * @file        邮件服务插件
 * @author      hotok
 * @date        2025-06-29
 * @lastEditor  hotok
 * @lastEditTime 2025-06-29
 * @description 集成邮件服务到Elysia，提供邮件发送、模板邮件等功能
 */

import { Elysia } from 'elysia';
import { emailService, initializeEmailService } from './email.service';
import { validateEmailConfig } from '@/config/email.config';
import { Logger } from '@/plugins/logger/logger.service';
import type {
    EmailSendOptions,
    EmailTemplateSendOptions,
    EmailSendResult,
    EmailServiceStatus,
    EmailHealthCheckResult,
} from '@/type/email.type';

/**
 * 邮件服务插件
 * 提供邮件发送、模板邮件、健康检查等功能
 */
export const emailPlugin = new Elysia({ name: 'email' })
    .onStart(async () => {
        try {
            // 验证邮件配置
            if (!validateEmailConfig()) {
                Logger.warn('邮件配置不完整，跳过邮件服务初始化');
                return;
            }

            // 初始化邮件服务
            await initializeEmailService();
            Logger.info('邮件服务插件加载完成');
        } catch (error) {
            Logger.error(new Error(`邮件服务插件初始化失败: ${error}`));
            // 不抛出错误，允许应用继续启动（邮件服务为非核心服务）
        }
    })
    .decorate('emailService', {
        /**
         * 发送邮件
         */
        async sendEmail(options: EmailSendOptions): Promise<EmailSendResult> {
            return await emailService.sendEmail(options);
        },

        /**
         * 发送模板邮件
         */
        async sendTemplateEmail(options: EmailTemplateSendOptions): Promise<EmailSendResult> {
            return await emailService.sendTemplateEmail(options);
        },

        /**
         * 获取邮件服务状态
         */
        getStatus(): EmailServiceStatus {
            return emailService.status;
        },

        /**
         * 执行健康检查
         */
        async healthCheck(): Promise<EmailHealthCheckResult> {
            return await emailService.healthCheck();
        },

        /**
         * 检查服务是否已初始化
         */
        isInitialized(): boolean {
            return emailService.isInitialized;
        },

        /**
         * 发送用户激活邮件
         */
        async sendActivationEmail(options: {
            to: string;
            username: string;
            nickname?: string;
            activationUrl: string;
            activationCode: string;
            expireTime: string;
        }): Promise<EmailSendResult> {
            return await emailService.sendTemplateEmail({
                to: options.to,
                template: 'activation',
                params: {
                    username: options.username,
                    nickname: options.nickname,
                    email: options.to,
                    activationUrl: options.activationUrl,
                    activationCode: options.activationCode,
                    expireTime: options.expireTime,
                },
            });
        },

        /**
         * 发送密码重置邮件
         */
        async sendPasswordResetEmail(options: {
            to: string;
            username: string;
            nickname?: string;
            resetUrl: string;
            resetCode: string;
            expireTime: string;
        }): Promise<EmailSendResult> {
            return await emailService.sendTemplateEmail({
                to: options.to,
                template: 'passwordReset',
                params: {
                    username: options.username,
                    nickname: options.nickname,
                    email: options.to,
                    resetUrl: options.resetUrl,
                    resetCode: options.resetCode,
                    expireTime: options.expireTime,
                },
            });
        },

        /**
         * 发送欢迎邮件
         */
        async sendWelcomeEmail(options: { to: string; username: string; nickname?: string }): Promise<EmailSendResult> {
            return await emailService.sendTemplateEmail({
                to: options.to,
                template: 'welcome',
                params: {
                    username: options.username,
                    nickname: options.nickname,
                    email: options.to,
                },
            });
        },

        /**
         * 发送密码修改通知邮件
         */
        async sendPasswordChangedEmail(options: {
            to: string;
            username: string;
            nickname?: string;
        }): Promise<EmailSendResult> {
            return await emailService.sendTemplateEmail({
                to: options.to,
                template: 'passwordChanged',
                params: {
                    username: options.username,
                    nickname: options.nickname,
                    email: options.to,
                },
            });
        },

        /**
         * 发送系统通知邮件
         */
        async sendNotificationEmail(options: {
            to: string | string[];
            username?: string;
            nickname?: string;
            message: string;
            subject?: string;
        }): Promise<EmailSendResult> {
            return await emailService.sendTemplateEmail({
                to: options.to,
                template: 'notification',
                params: {
                    username: options.username,
                    nickname: options.nickname,
                    message: options.message,
                },
                subject: options.subject,
            });
        },
    })
    .onStop(async () => {
        try {
            await emailService.close();
            Logger.info('邮件服务已关闭');
        } catch (error) {
            Logger.error(new Error(`关闭邮件服务时出错: ${error}`));
        }
    });

/**
 * 邮件服务类型定义（用于TypeScript类型推断）
 */
export type EmailServiceDecorator = {
    emailService: {
        sendEmail(options: EmailSendOptions): Promise<EmailSendResult>;
        sendTemplateEmail(options: EmailTemplateSendOptions): Promise<EmailSendResult>;
        getStatus(): EmailServiceStatus;
        healthCheck(): Promise<EmailHealthCheckResult>;
        isInitialized(): boolean;
        sendActivationEmail(options: {
            to: string;
            username: string;
            nickname?: string;
            activationUrl: string;
            activationCode: string;
            expireTime: string;
        }): Promise<EmailSendResult>;
        sendPasswordResetEmail(options: {
            to: string;
            username: string;
            nickname?: string;
            resetUrl: string;
            resetCode: string;
            expireTime: string;
        }): Promise<EmailSendResult>;
        sendWelcomeEmail(options: { to: string; username: string; nickname?: string }): Promise<EmailSendResult>;
        sendPasswordChangedEmail(options: {
            to: string;
            username: string;
            nickname?: string;
        }): Promise<EmailSendResult>;
        sendNotificationEmail(options: {
            to: string | string[];
            username?: string;
            nickname?: string;
            message: string;
            subject?: string;
        }): Promise<EmailSendResult>;
    };
};