use serde::{Deserialize, Serialize};

/// 邮件内容类型
#[derive(Debug, Clone, Copy, Serialize, Deserialize)]
pub enum ContentType {
    /// 纯文本
    Text,
    /// HTML格式
    Html,
}

/// 邮件优先级
#[derive(Debug, Clone, Copy, Serialize, Deserialize)]
pub enum Priority {
    Low,
    Normal,
    High,
}

/// 邮件请求
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct EmailRequest {
    /// 收件人邮箱
    pub to: String,
    /// 收件人姓名（可选）
    pub to_name: Option<String>,
    /// 邮件主题
    pub subject: String,
    /// 邮件正文
    pub body: String,
    /// 内容类型
    pub content_type: ContentType,
    /// 优先级
    pub priority: Option<Priority>,
    /// 抄送列表（可选）
    pub cc: Option<Vec<String>>,
    /// 密送列表（可选）
    pub bcc: Option<Vec<String>>,
}

impl Default for EmailRequest {
    fn default() -> Self {
        Self {
            to: String::new(),
            to_name: None,
            subject: String::new(),
            body: String::new(),
            content_type: ContentType::Text,
            priority: Some(Priority::Normal),
            cc: None,
            bcc: None,
        }
    }
}

impl EmailRequest {
    /// 创建简单的文本邮件请求
    pub fn simple(to: &str, subject: &str, body: &str) -> Self {
        Self {
            to: to.to_string(),
            to_name: None,
            subject: subject.to_string(),
            body: body.to_string(),
            content_type: ContentType::Text,
            priority: Some(Priority::Normal),
            cc: None,
            bcc: None,
        }
    }
    
    /// 创建HTML邮件请求
    pub fn html(to: &str, subject: &str, html_body: &str) -> Self {
        Self {
            to: to.to_string(),
            to_name: None,
            subject: subject.to_string(),
            body: html_body.to_string(),
            content_type: ContentType::Html,
            priority: Some(Priority::Normal),
            cc: None,
            bcc: None,
        }
    }
}

/// 邮件发送结果
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct EmailResult {
    /// 是否成功
    pub success: bool,
    /// 收件人
    pub recipient: String,
    /// 错误信息（如果有）
    pub error: Option<String>,
    /// 消息ID（SMTP服务器返回）
    pub message_id: Option<String>,
}

impl EmailResult {
    /// 创建成功结果
    pub fn success(recipient: &str, message_id: Option<&str>) -> Self {
        Self {
            success: true,
            recipient: recipient.to_string(),
            error: None,
            message_id: message_id.map(|s| s.to_string()),
        }
    }
    
    /// 创建失败结果
    pub fn failure(recipient: &str, error: &str) -> Self {
        Self {
            success: false,
            recipient: recipient.to_string(),
            error: Some(error.to_string()),
            message_id: None,
        }
    }
}