botserver/src/email/mod.rs

948 lines
30 KiB
Rust

use crate::{config::EmailConfig, shared::state::AppState};
use axum::{
extract::{Path, State},
http::StatusCode,
response::{IntoResponse, Response},
Json,
};
use axum::{
routing::{get, post},
Router,
};
use base64::{engine::general_purpose, Engine as _};
use diesel::prelude::*;
use imap::types::Seq;
use lettre::{transport::smtp::authentication::Credentials, Message, SmtpTransport, Transport};
use log::{error, info};
use mailparse::{parse_mail, MailHeaderMap};
use serde::{Deserialize, Serialize};
use std::sync::Arc;
use uuid::Uuid;
pub mod vectordb;
// ===== Router Configuration =====
/// Configure email API routes
pub fn configure() -> Router<Arc<AppState>> {
Router::new()
.route("/api/email/accounts", get(list_email_accounts))
.route("/api/email/accounts/add", post(add_email_account))
.route(
"/api/email/accounts/:account_id",
axum::routing::delete(delete_email_account),
)
.route("/api/email/list", post(list_emails))
.route("/api/email/send", post(send_email))
.route("/api/email/draft", post(save_draft))
.route("/api/email/folders/:account_id", get(list_folders))
.route("/api/email/latest", post(get_latest_email_from))
.route("/api/email/get/:campaign_id", get(get_emails))
.route("/api/email/click/:campaign_id/:email", get(save_click))
}
// Export SaveDraftRequest for other modules
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SaveDraftRequest {
pub to: String,
pub subject: String,
pub cc: Option<String>,
pub text: String,
}
// ===== Request/Response Structures =====
#[derive(Debug, Serialize, Deserialize)]
pub struct EmailAccountRequest {
pub email: String,
pub display_name: Option<String>,
pub imap_server: String,
pub imap_port: u16,
pub smtp_server: String,
pub smtp_port: u16,
pub username: String,
pub password: String,
pub is_primary: bool,
}
#[derive(Debug, Serialize)]
pub struct EmailAccountResponse {
pub id: String,
pub email: String,
pub display_name: Option<String>,
pub imap_server: String,
pub imap_port: u16,
pub smtp_server: String,
pub smtp_port: u16,
pub is_primary: bool,
pub is_active: bool,
pub created_at: String,
}
#[derive(Debug, Serialize)]
pub struct EmailResponse {
pub id: String,
pub from_name: String,
pub from_email: String,
pub to: String,
pub subject: String,
pub preview: String,
pub body: String,
pub date: String,
pub time: String,
pub read: bool,
pub folder: String,
pub has_attachments: bool,
}
#[derive(Debug, Serialize, Deserialize)]
pub struct EmailRequest {
pub to: String,
pub subject: String,
pub body: String,
pub cc: Option<String>,
pub bcc: Option<String>,
pub attachments: Option<Vec<String>>,
}
#[derive(Debug, Serialize, Deserialize)]
pub struct SendEmailRequest {
pub account_id: String,
pub to: String,
pub cc: Option<String>,
pub bcc: Option<String>,
pub subject: String,
pub body: String,
pub is_html: bool,
}
#[derive(Debug, Deserialize)]
pub struct SaveDraftRequest {
pub account_id: String,
pub to: String,
pub cc: Option<String>,
pub bcc: Option<String>,
pub subject: String,
pub body: String,
}
#[derive(Debug, Serialize)]
pub struct SaveDraftResponse {
pub success: bool,
pub draft_id: Option<String>,
pub message: String,
}
#[derive(Debug, Deserialize)]
pub struct ListEmailsRequest {
pub account_id: String,
pub folder: Option<String>,
pub limit: Option<usize>,
pub offset: Option<usize>,
}
#[derive(Debug, Deserialize)]
pub struct MarkEmailRequest {
pub account_id: String,
pub email_id: String,
pub read: bool,
}
#[derive(Debug, Deserialize)]
pub struct DeleteEmailRequest {
pub account_id: String,
pub email_id: String,
}
#[derive(Debug, Serialize)]
pub struct FolderInfo {
pub name: String,
pub path: String,
pub unread_count: i32,
pub total_count: i32,
}
#[derive(Debug, Serialize)]
pub struct ApiResponse<T> {
pub success: bool,
pub data: Option<T>,
pub message: Option<String>,
}
// ===== Error Handling =====
struct EmailError(String);
impl IntoResponse for EmailError {
fn into_response(self) -> Response {
(StatusCode::INTERNAL_SERVER_ERROR, self.0).into_response()
}
}
impl From<String> for EmailError {
fn from(s: String) -> Self {
EmailError(s)
}
}
// ===== Helper Functions =====
fn parse_from_field(from: &str) -> (String, String) {
if let Some(start) = from.find('<') {
if let Some(end) = from.find('>') {
let name = from[..start].trim().trim_matches('"').to_string();
let email = from[start + 1..end].to_string();
return (name, email);
}
}
(String::new(), from.to_string())
}
fn format_email_time(date_str: &str) -> String {
// Simple time formatting - in production, use proper date parsing
if date_str.is_empty() {
return "Unknown".to_string();
}
// Return simplified version for now
date_str
.split_whitespace()
.take(4)
.collect::<Vec<_>>()
.join(" ")
}
fn encrypt_password(password: &str) -> String {
// In production, use proper encryption like AES-256
// For now, base64 encode (THIS IS NOT SECURE - USE PROPER ENCRYPTION)
general_purpose::STANDARD.encode(password.as_bytes())
}
fn decrypt_password(encrypted: &str) -> Result<String, String> {
// In production, use proper decryption
general_purpose::STANDARD
.decode(encrypted)
.map_err(|e| format!("Decryption failed: {}", e))
.and_then(|bytes| {
String::from_utf8(bytes).map_err(|e| format!("UTF-8 conversion failed: {}", e))
})
}
// ===== Account Management Endpoints =====
pub async fn add_email_account(
State(state): State<Arc<AppState>>,
Json(request): Json<EmailAccountRequest>,
) -> Result<Json<ApiResponse<EmailAccountResponse>>, EmailError> {
// TODO: Get user_id from session/token authentication
let user_id = Uuid::nil(); // Placeholder - implement proper auth
let account_id = Uuid::new_v4();
let encrypted_password = encrypt_password(&request.password);
let conn = state.conn.clone();
tokio::task::spawn_blocking(move || {
use crate::shared::models::schema::user_email_accounts::dsl::*;
let mut db_conn = conn.get().map_err(|e| format!("DB connection error: {}", e))?;
// If this is primary, unset other primary accounts
if request.is_primary {
diesel::update(user_email_accounts.filter(user_id.eq(&user_id)))
.set(is_primary.eq(false))
.execute(&mut db_conn)
.ok();
}
diesel::sql_query(
"INSERT INTO user_email_accounts
(id, user_id, email, display_name, imap_server, imap_port, smtp_server, smtp_port, username, password_encrypted, is_primary, is_active)
VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12)"
)
.bind::<diesel::sql_types::Uuid, _>(account_id)
.bind::<diesel::sql_types::Uuid, _>(user_id)
.bind::<diesel::sql_types::Text, _>(&request.email)
.bind::<diesel::sql_types::Nullable<diesel::sql_types::Text>, _>(request.display_name.as_ref())
.bind::<diesel::sql_types::Text, _>(&request.imap_server)
.bind::<diesel::sql_types::Integer, _>(request.imap_port as i32)
.bind::<diesel::sql_types::Text, _>(&request.smtp_server)
.bind::<diesel::sql_types::Integer, _>(request.smtp_port as i32)
.bind::<diesel::sql_types::Text, _>(&request.username)
.bind::<diesel::sql_types::Text, _>(&encrypted_password)
.bind::<diesel::sql_types::Bool, _>(request.is_primary)
.bind::<diesel::sql_types::Bool, _>(true)
.execute(&mut db_conn)
.map_err(|e| format!("Failed to insert account: {}", e))?;
Ok::<_, String>(account_id)
})
.await
.map_err(|e| EmailError(format!("Task join error: {}", e)))?
.map_err(EmailError)?;
Ok(Json(ApiResponse {
success: true,
data: Some(EmailAccountResponse {
id: account_id.to_string(),
email: request.email,
display_name: request.display_name,
imap_server: request.imap_server,
imap_port: request.imap_port,
smtp_server: request.smtp_server,
smtp_port: request.smtp_port,
is_primary: request.is_primary,
is_active: true,
created_at: chrono::Utc::now().to_rfc3339(),
}),
message: Some("Email account added successfully".to_string()),
}))
}
pub async fn list_email_accounts(
State(state): State<Arc<AppState>>,
) -> Result<Json<ApiResponse<Vec<EmailAccountResponse>>>, EmailError> {
// TODO: Get user_id from session/token authentication
let user_id = Uuid::nil(); // Placeholder
let conn = state.conn.clone();
let accounts = tokio::task::spawn_blocking(move || {
let mut db_conn = conn.get().map_err(|e| format!("DB connection error: {}", e))?;
let results: Vec<(Uuid, String, Option<String>, String, i32, String, i32, bool, bool, chrono::DateTime<chrono::Utc>)> =
diesel::sql_query(
"SELECT id, email, display_name, imap_server, imap_port, smtp_server, smtp_port, is_primary, is_active, created_at
FROM user_email_accounts WHERE user_id = $1 AND is_active = true ORDER BY is_primary DESC, created_at DESC"
)
.bind::<diesel::sql_types::Uuid, _>(user_id)
.load(&mut db_conn)
.map_err(|e| format!("Query failed: {}", e))?;
Ok::<_, String>(results)
})
.await
.map_err(|e| EmailError(format!("Task join error: {}", e)))?
.map_err(EmailError)?;
let account_list: Vec<EmailAccountResponse> = accounts
.into_iter()
.map(
|(
id,
email,
display_name,
imap_server,
imap_port,
smtp_server,
smtp_port,
is_primary,
is_active,
created_at,
)| {
EmailAccountResponse {
id: id.to_string(),
email,
display_name,
imap_server,
imap_port: imap_port as u16,
smtp_server,
smtp_port: smtp_port as u16,
is_primary,
is_active,
created_at: created_at.to_rfc3339(),
}
},
)
.collect();
Ok(Json(ApiResponse {
success: true,
data: Some(account_list),
message: None,
}))
}
pub async fn delete_email_account(
State(state): State<Arc<AppState>>,
Path(account_id): Path<String>,
) -> Result<Json<ApiResponse<()>>, EmailError> {
let account_uuid =
Uuid::parse_str(&account_id).map_err(|_| EmailError("Invalid account ID".to_string()))?;
let conn = state.conn.clone();
tokio::task::spawn_blocking(move || {
let mut db_conn = conn
.get()
.map_err(|e| format!("DB connection error: {}", e))?;
diesel::sql_query("UPDATE user_email_accounts SET is_active = false WHERE id = $1")
.bind::<diesel::sql_types::Uuid, _>(account_uuid)
.execute(&mut db_conn)
.map_err(|e| format!("Failed to delete account: {}", e))?;
Ok::<_, String>(())
})
.await
.map_err(|e| EmailError(format!("Task join error: {}", e)))?
.map_err(EmailError)?;
Ok(Json(ApiResponse {
success: true,
data: Some(()),
message: Some("Email account deleted".to_string()),
}))
}
// ===== Email Operations =====
pub async fn list_emails(
State(state): State<Arc<AppState>>,
Json(request): Json<ListEmailsRequest>,
) -> Result<Json<ApiResponse<Vec<EmailResponse>>>, EmailError> {
let account_uuid = Uuid::parse_str(&request.account_id)
.map_err(|_| EmailError("Invalid account ID".to_string()))?;
// Get account credentials from database
let conn = state.conn.clone();
let account_info = tokio::task::spawn_blocking(move || {
let mut db_conn = conn.get().map_err(|e| format!("DB connection error: {}", e))?;
let result: (String, i32, String, String) = diesel::sql_query(
"SELECT imap_server, imap_port, username, password_encrypted FROM user_email_accounts WHERE id = $1 AND is_active = true"
)
.bind::<diesel::sql_types::Uuid, _>(account_uuid)
.get_result(&mut db_conn)
.map_err(|e| format!("Account not found: {}", e))?;
Ok::<_, String>(result)
})
.await
.map_err(|e| EmailError(format!("Task join error: {}", e)))?
.map_err(EmailError)?;
let (imap_server, imap_port, username, encrypted_password) = account_info;
let password = decrypt_password(&encrypted_password).map_err(EmailError)?;
// Connect to IMAP
let tls = native_tls::TlsConnector::builder()
.build()
.map_err(|e| EmailError(format!("Failed to create TLS connector: {:?}", e)))?;
let client = imap::ClientBuilder::new(imap_server.as_str(), imap_port as u16)
.native_tls(&tls)
.map_err(|e| EmailError(format!("Failed to create IMAP client: {:?}", e)))?
.connect()
.map_err(|e| EmailError(format!("Failed to connect to IMAP: {:?}", e)))?;
let mut session = client
.login(&username, &password)
.map_err(|e| EmailError(format!("Login failed: {:?}", e)))?;
let folder = request.folder.unwrap_or_else(|| "INBOX".to_string());
session
.select(&folder)
.map_err(|e| EmailError(format!("Failed to select folder: {:?}", e)))?;
let messages = session
.search("ALL")
.map_err(|e| EmailError(format!("Failed to search emails: {:?}", e)))?;
let mut email_list = Vec::new();
let limit = request.limit.unwrap_or(50);
let offset = request.offset.unwrap_or(0);
let recent_messages: Vec<_> = messages.iter().cloned().collect();
let recent_messages: Vec<Seq> = recent_messages
.into_iter()
.rev()
.skip(offset)
.take(limit)
.collect();
for seq in recent_messages {
let fetch_result = session.fetch(seq.to_string(), "RFC822");
let messages =
fetch_result.map_err(|e| EmailError(format!("Failed to fetch email: {:?}", e)))?;
for msg in messages.iter() {
let body = msg
.body()
.ok_or_else(|| EmailError("No body found".to_string()))?;
let parsed = parse_mail(body)
.map_err(|e| EmailError(format!("Failed to parse email: {:?}", e)))?;
let headers = parsed.get_headers();
let subject = headers.get_first_value("Subject").unwrap_or_default();
let from = headers.get_first_value("From").unwrap_or_default();
let to = headers.get_first_value("To").unwrap_or_default();
let date = headers.get_first_value("Date").unwrap_or_default();
let body_text = if let Some(body_part) = parsed
.subparts
.iter()
.find(|p| p.ctype.mimetype == "text/plain")
{
body_part.get_body().unwrap_or_default()
} else {
parsed.get_body().unwrap_or_default()
};
let body_html = if let Some(body_part) = parsed
.subparts
.iter()
.find(|p| p.ctype.mimetype == "text/html")
{
body_part.get_body().unwrap_or_default()
} else {
String::new()
};
let preview = body_text.lines().take(3).collect::<Vec<_>>().join(" ");
let preview_truncated = if preview.len() > 150 {
format!("{}...", &preview[..150])
} else {
preview
};
let (from_name, from_email) = parse_from_field(&from);
let has_attachments = parsed.subparts.iter().any(|p| {
p.get_content_disposition().disposition == mailparse::DispositionType::Attachment
});
email_list.push(EmailResponse {
id: seq.to_string(),
from_name,
from_email,
to,
subject,
preview: preview_truncated,
body: if body_html.is_empty() {
body_text
} else {
body_html
},
date: format_email_time(&date),
time: format_email_time(&date),
read: false, // TODO: Check IMAP flags
folder: folder.clone(),
has_attachments,
});
}
}
session.logout().ok();
Ok(Json(ApiResponse {
success: true,
data: Some(email_list),
message: None,
}))
}
pub async fn send_email(
State(state): State<Arc<AppState>>,
Json(request): Json<SendEmailRequest>,
) -> Result<Json<ApiResponse<()>>, EmailError> {
let account_uuid = Uuid::parse_str(&request.account_id)
.map_err(|_| EmailError("Invalid account ID".to_string()))?;
// Get account credentials
let conn = state.conn.clone();
let account_info = tokio::task::spawn_blocking(move || {
let mut db_conn = conn
.get()
.map_err(|e| format!("DB connection error: {}", e))?;
let result: (String, String, i32, String, String, String) = diesel::sql_query(
"SELECT email, display_name, smtp_port, smtp_server, username, password_encrypted
FROM user_email_accounts WHERE id = $1 AND is_active = true",
)
.bind::<diesel::sql_types::Uuid, _>(account_uuid)
.get_result(&mut db_conn)
.map_err(|e| format!("Account not found: {}", e))?;
Ok::<_, String>(result)
})
.await
.map_err(|e| EmailError(format!("Task join error: {}", e)))?
.map_err(EmailError)?;
let (from_email, display_name, smtp_port, smtp_server, username, encrypted_password) =
account_info;
let password = decrypt_password(&encrypted_password).map_err(EmailError)?;
let from_addr = if display_name.is_empty() {
from_email.clone()
} else {
format!("{} <{}>", display_name, from_email)
};
// Build email
let mut email_builder = Message::builder()
.from(
from_addr
.parse()
.map_err(|e| EmailError(format!("Invalid from address: {}", e)))?,
)
.to(request
.to
.parse()
.map_err(|e| EmailError(format!("Invalid to address: {}", e)))?)
.subject(request.subject);
if let Some(cc) = request.cc {
email_builder = email_builder.cc(cc
.parse()
.map_err(|e| EmailError(format!("Invalid cc address: {}", e)))?);
}
if let Some(bcc) = request.bcc {
email_builder = email_builder.bcc(
bcc.parse()
.map_err(|e| EmailError(format!("Invalid bcc address: {}", e)))?,
);
}
let email = email_builder
.body(request.body)
.map_err(|e| EmailError(format!("Failed to build email: {}", e)))?;
// Send email
let creds = Credentials::new(username, password);
let mailer = SmtpTransport::relay(&smtp_server)
.map_err(|e| EmailError(format!("Failed to create SMTP transport: {}", e)))?
.port(smtp_port as u16)
.credentials(creds)
.build();
mailer
.send(&email)
.map_err(|e| EmailError(format!("Failed to send email: {}", e)))?;
info!("Email sent successfully from account {}", account_uuid);
Ok(Json(ApiResponse {
success: true,
data: Some(()),
message: Some("Email sent successfully".to_string()),
}))
}
pub async fn save_draft(
State(state): State<Arc<AppState>>,
Json(request): Json<SaveDraftRequest>,
) -> Result<Json<SaveDraftResponse>, EmailError> {
let account_uuid = Uuid::parse_str(&request.account_id)
.map_err(|_| EmailError("Invalid account ID".to_string()))?;
// TODO: Get user_id from session
let user_id = Uuid::nil();
let draft_id = Uuid::new_v4();
let conn = state.conn.clone();
tokio::task::spawn_blocking(move || {
let mut db_conn = conn.get().map_err(|e| format!("DB connection error: {}", e))?;
diesel::sql_query(
"INSERT INTO email_drafts (id, user_id, account_id, to_address, cc_address, bcc_address, subject, body)
VALUES ($1, $2, $3, $4, $5, $6, $7, $8)"
)
.bind::<diesel::sql_types::Uuid, _>(draft_id)
.bind::<diesel::sql_types::Uuid, _>(user_id)
.bind::<diesel::sql_types::Uuid, _>(account_uuid)
.bind::<diesel::sql_types::Text, _>(&request.to)
.bind::<diesel::sql_types::Nullable<diesel::sql_types::Text>, _>(request.cc.as_ref())
.bind::<diesel::sql_types::Nullable<diesel::sql_types::Text>, _>(request.bcc.as_ref())
.bind::<diesel::sql_types::Text, _>(&request.subject)
.bind::<diesel::sql_types::Text, _>(&request.body)
.execute(&mut db_conn)
.map_err(|e| format!("Failed to save draft: {}", e))?;
Ok::<_, String>(())
})
.await
.map_err(|e| EmailError(format!("Task join error: {}", e)))?
.map_err(|e| {
return EmailError(e);
})?;
Ok(Json(SaveDraftResponse {
success: true,
draft_id: Some(draft_id.to_string()),
message: "Draft saved successfully".to_string(),
}))
}
pub async fn list_folders(
State(state): State<Arc<AppState>>,
Path(account_id): Path<String>,
) -> Result<Json<ApiResponse<Vec<FolderInfo>>>, EmailError> {
let account_uuid =
Uuid::parse_str(&account_id).map_err(|_| EmailError("Invalid account ID".to_string()))?;
// Get account credentials
let conn = state.conn.clone();
let account_info = tokio::task::spawn_blocking(move || {
let mut db_conn = conn.get().map_err(|e| format!("DB connection error: {}", e))?;
let result: (String, i32, String, String) = diesel::sql_query(
"SELECT imap_server, imap_port, username, password_encrypted FROM user_email_accounts WHERE id = $1 AND is_active = true"
)
.bind::<diesel::sql_types::Uuid, _>(account_uuid)
.get_result(&mut db_conn)
.map_err(|e| format!("Account not found: {}", e))?;
Ok::<_, String>(result)
})
.await
.map_err(|e| EmailError(format!("Task join error: {}", e)))?
.map_err(EmailError)?;
let (imap_server, imap_port, username, encrypted_password) = account_info;
let password = decrypt_password(&encrypted_password).map_err(EmailError)?;
// Connect and list folders
let tls = native_tls::TlsConnector::builder()
.build()
.map_err(|e| EmailError(format!("TLS error: {:?}", e)))?;
let client = imap::ClientBuilder::new(imap_server.as_str(), imap_port as u16)
.native_tls(&tls)
.map_err(|e| EmailError(format!("Failed to create IMAP client: {:?}", e)))?
.connect()
.map_err(|e| EmailError(format!("Failed to connect to IMAP: {:?}", e)))?;
let mut session = client
.login(&username, &password)
.map_err(|e| EmailError(format!("Login failed: {:?}", e)))?;
let folders = session
.list(None, Some("*"))
.map_err(|e| EmailError(format!("Failed to list folders: {:?}", e)))?;
let folder_list: Vec<FolderInfo> = folders
.iter()
.map(|f| FolderInfo {
name: f.name().to_string(),
path: f.name().to_string(),
unread_count: 0, // TODO: Query actual counts
total_count: 0,
})
.collect();
session.logout().ok();
Ok(Json(ApiResponse {
success: true,
data: Some(folder_list),
message: None,
}))
}
// ===== Legacy endpoints for backward compatibility =====
pub async fn get_latest_email_from(
State(_state): State<Arc<AppState>>,
Json(_request): Json<serde_json::Value>,
) -> Result<Json<serde_json::Value>, EmailError> {
Ok(Json(serde_json::json!({
"success": false,
"message": "Please use the new /api/email/list endpoint with account_id"
})))
}
pub async fn save_click(
Path((campaign_id, email)): Path<(String, String)>,
State(_state): State<Arc<AppState>>,
) -> impl IntoResponse {
info!(
"Click tracked - Campaign: {}, Email: {}",
campaign_id, email
);
let pixel: Vec<u8> = vec![
0x47, 0x49, 0x46, 0x38, 0x39, 0x61, 0x01, 0x00, 0x01, 0x00, 0x80, 0x00, 0x00, 0xFF, 0xFF,
0xFF, 0x00, 0x00, 0x00, 0x21, 0xF9, 0x04, 0x01, 0x00, 0x00, 0x00, 0x00, 0x2C, 0x00, 0x00,
0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x02, 0x02, 0x44, 0x01, 0x00, 0x3B,
];
(StatusCode::OK, [("content-type", "image/gif")], pixel)
}
pub async fn get_emails(
Path(campaign_id): Path<String>,
State(_state): State<Arc<AppState>>,
) -> String {
info!("Get emails requested for campaign: {}", campaign_id);
"No emails tracked".to_string()
}
// ===== EmailService for compatibility with keyword system =====
pub struct EmailService {
state: Arc<AppState>,
}
impl EmailService {
pub fn new(state: Arc<AppState>) -> Self {
Self { state }
}
pub async fn send_email(
&self,
to: &str,
subject: &str,
body: &str,
cc: Option<Vec<String>>,
) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
let config = self
.state
.config
.as_ref()
.ok_or("Email configuration not available")?;
let from_addr = config
.email
.from
.parse()
.map_err(|e| format!("Invalid from address: {}", e))?;
let mut email_builder = Message::builder()
.from(from_addr)
.to(to.parse()?)
.subject(subject);
if let Some(cc_list) = cc {
for cc_addr in cc_list {
email_builder = email_builder.cc(cc_addr.parse()?);
}
}
let email = email_builder.body(body.to_string())?;
let creds = Credentials::new(config.email.username.clone(), config.email.password.clone());
let mailer = SmtpTransport::relay(&config.email.smtp_server)?
.credentials(creds)
.build();
mailer.send(&email)?;
Ok(())
}
pub async fn send_email_with_attachment(
&self,
to: &str,
subject: &str,
body: &str,
attachment: Vec<u8>,
filename: &str,
) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
// For now, just send without attachment
// Full implementation would use lettre's multipart support
self.send_email(to, subject, body, None).await
}
}
// Helper functions for draft system
pub async fn fetch_latest_sent_to(config: &EmailConfig, to: &str) -> Result<String, String> {
use native_tls::TlsConnector;
let tls = TlsConnector::builder()
.build()
.map_err(|e| format!("TLS error: {}", e))?;
let client = imap::ClientBuilder::new(&config.server, config.port as u16)
.native_tls(&tls)
.map_err(|e| format!("IMAP client error: {}", e))?
.connect()
.map_err(|e| format!("Connection error: {}", e))?;
let mut session = client
.login(&config.username, &config.password)
.map_err(|e| format!("Login failed: {:?}", e))?;
session
.select("INBOX")
.map_err(|e| format!("Select INBOX failed: {}", e))?;
// Search for emails to this recipient
let search_query = format!("TO \"{}\"", to);
let message_ids = session
.search(&search_query)
.map_err(|e| format!("Search failed: {}", e))?;
if let Some(last_id) = message_ids.last() {
let messages = session
.fetch(last_id.to_string(), "BODY[TEXT]")
.map_err(|e| format!("Fetch failed: {}", e))?;
if let Some(message) = messages.iter().next() {
if let Some(body) = message.text() {
return Ok(String::from_utf8_lossy(body).to_string());
}
}
}
session.logout().ok();
Ok(String::new())
}
pub async fn save_email_draft(
config: &EmailConfig,
draft: &SaveDraftRequest,
) -> Result<(), String> {
use chrono::Utc;
use native_tls::TlsConnector;
let tls = TlsConnector::builder()
.build()
.map_err(|e| format!("TLS error: {}", e))?;
let client = imap::ClientBuilder::new(&config.server, config.port as u16)
.native_tls(&tls)
.map_err(|e| format!("IMAP client error: {}", e))?
.connect()
.map_err(|e| format!("Connection error: {}", e))?;
let mut session = client
.login(&config.username, &config.password)
.map_err(|e| format!("Login failed: {:?}", e))?;
// Create draft email in RFC822 format
let date = Utc::now().to_rfc2822();
let message_id = format!("<{}.{}@botserver>", Uuid::new_v4(), config.server);
let cc_header = if let Some(cc) = &draft.cc {
format!("Cc: {}\r\n", cc)
} else {
String::new()
};
let email_content = format!(
"Date: {}\r\n\
From: {}\r\n\
To: {}\r\n\
{}\
Subject: {}\r\n\
Message-ID: {}\r\n\
Content-Type: text/html; charset=UTF-8\r\n\
\r\n\
{}",
date, config.from, draft.to, cc_header, draft.subject, message_id, draft.text
);
// Try to save to Drafts folder, fall back to INBOX if not available
let folder = session
.list(None, Some("Drafts"))
.map_err(|e| format!("List folders failed: {}", e))?
.iter()
.find(|name| name.name().to_lowercase().contains("draft"))
.map(|n| n.name().to_string())
.unwrap_or_else(|| "INBOX".to_string());
session
.append(&folder, email_content.as_bytes())
.map_err(|e| format!("Append draft failed: {}", e))?;
session.logout().ok();
info!("Draft saved to: {}, subject: {}", draft.to, draft.subject);
Ok(())
}