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import { Hono } from "hono";
import { createSendConnector, type SendConnectorType } from "../../connectors/registry.js";
import { SmtpSendConnector } from "../../connectors/smtp.js";
import type { OutgoingAttachment } from "../../connectors/types.js";
import { upsertAttachmentBlob } from "../../storage/attachment-storage.js";
import { compressText } from "../../storage/compression.js";
import { htmlToText } from "../../storage/html-to-text.js";
interface IdentitySendRow {
id: number;
email: string;
name: string;
send_type: SendConnectorType | null;
smtp_host: string | null;
smtp_port: number | null;
smtp_tls: number | null;
smtp_user: string | null;
smtp_pass: string | null;
ses_region: string | null;
ses_access_key_id: string | null;
ses_secret_access_key: string | null;
}
interface FolderRow {
id: number;
}
export function sendRoutes(getDb: () => Database.Database): Hono {
const api = new Hono();
/** POST /send — send an email via the identity's configured send connector */
api.post("/", async (c) => {
const db = getDb();
const body = await c.req.json();
const {
identity_id,
to,
cc,
bcc,
subject,
text_body,
html_body,
in_reply_to,
references,
attachments,
} = body as {
identity_id: number;
to: string[];
cc?: string[];
bcc?: string[];
subject: string;
text_body?: string;
html_body?: string;
in_reply_to?: string;
references?: string[];
attachments?: { filename: string; content_type: string; content_base64: string }[];
};
if (!identity_id) return c.json({ error: "identity_id is required" }, 400);
if (!Array.isArray(to) || to.length === 0)
return c.json({ error: "to must be a non-empty array of email addresses" }, 400);
if (!subject && !text_body && !html_body)
return c.json({ error: "At least one of subject, text_body, or html_body is required" }, 400);
const identity = db
.prepare(
`SELECT i.id, i.email, i.name,
oc.type AS send_type,
oc.smtp_host, oc.smtp_port, oc.smtp_tls, oc.smtp_user, oc.smtp_pass,
oc.ses_region, oc.ses_access_key_id, oc.ses_secret_access_key
FROM identities i
LEFT JOIN outbound_connectors oc ON oc.id = i.outbound_connector_id
WHERE i.id = ?`,
)
.get(identity_id) as IdentitySendRow | undefined;
if (!identity) return c.json({ error: "Identity not found" }, 404);
const sendType = identity.send_type ?? "smtp";
let connector: import("../../connectors/types.js").SendConnector;
try {
if (sendType === "ses") {
if (!identity.ses_region) {
return c.json({ error: "SES is not configured for this identity" }, 400);
}
connector = createSendConnector({
type: "ses",
ses: {
region: identity.ses_region,
credentials:
identity.ses_access_key_id && identity.ses_secret_access_key
? {
accessKeyId: identity.ses_access_key_id,
secretAccessKey: identity.ses_secret_access_key,
}
: undefined,
},
});
} else {
if (!identity.smtp_host || !identity.smtp_user || !identity.smtp_pass) {
return c.json({ error: "SMTP is not configured for this identity" }, 400);
}
connector = createSendConnector({
type: "smtp",
smtp: {
host: identity.smtp_host,
port: identity.smtp_port ?? 587,
secure: (identity.smtp_tls ?? 1) === 1,
auth: { user: identity.smtp_user, pass: identity.smtp_pass },
},
});
}
} catch (err) {
const message = err instanceof Error ? err.message : String(err);
return c.json({ error: `Failed to create send connector: ${message}` }, 500);
}
const outgoingAttachments: OutgoingAttachment[] | undefined = attachments?.map((a) => ({
filename: a.filename,
contentType: a.content_type,
content: Buffer.from(a.content_base64, "base64"),
}));
const fromAddress = identity.name ? `${identity.name} <${identity.email}>` : identity.email;
try {
const result = await connector.send({
from: fromAddress,
to,
cc,
bcc,
subject: subject ?? "",
textBody: text_body,
htmlBody: html_body,
inReplyTo: in_reply_to,
references,
attachments: outgoingAttachments,
});
// Save sent message to local storage
const sentFolderId = findOrCreateSentFolder(db, identity_id);
const nextUid = getNextLocalUid(db, sentFolderId);
const msgId = db
.prepare(`
INSERT INTO messages (
identity_id, folder_id, uid, message_id, subject,
from_address, from_name, to_addresses, cc_addresses, bcc_addresses,
date, text_body, html_text_body, html_body, flags, size, has_attachments,
in_reply_to, "references"
) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, datetime('now'), ?, ?, ?, '\\Seen', ?, ?, ?, ?)
`)
.run(
identity_id,
sentFolderId,
nextUid,
result.messageId,
subject ?? "",
identity.email,
identity.name ?? null,
JSON.stringify(to),
cc ? JSON.stringify(cc) : null,
bcc ? JSON.stringify(bcc) : null,
text_body ?? null,
htmlToText(html_body ?? null),
compressText(html_body ?? null),
(text_body ?? "").length + (html_body ?? "").length,
attachments ? 1 : 0,
in_reply_to ?? null,
references ? JSON.stringify(references) : null,
);
// Save attachments if present
if (attachments && attachments.length > 0) {
const insertAttachment = db.prepare(
"INSERT INTO attachments (message_id, filename, content_type, size, content_hash) VALUES (?, ?, ?, ?, ?)",
);
for (const att of attachments) {
const buf = Buffer.from(att.content_base64, "base64");
const contentHash = upsertAttachmentBlob(db, buf);
insertAttachment.run(
Number(msgId.lastInsertRowid),
att.filename,
att.content_type,
buf.length,
contentHash,
);
}
}
// Update folder counts
db.prepare(
"UPDATE folders SET message_count = (SELECT COUNT(*) FROM messages WHERE folder_id = ?) WHERE id = ?",
).run(sentFolderId, sentFolderId);
return c.json({
ok: true,
message_id: result.messageId,
accepted: result.accepted,
rejected: result.rejected,
stored_message_id: Number(msgId.lastInsertRowid),
});
} catch (err) {
const message = err instanceof Error ? err.message : String(err);
return c.json({ error: `Failed to send: ${message}` }, 500);
}
});
/** POST /send/test-smtp — verify SMTP connection with provided credentials */
api.post("/test-smtp", async (c) => {
const body = await c.req.json();
if (!body.smtp_host || !body.smtp_user || !body.smtp_pass) {
return c.json({ error: "Missing required fields: smtp_host, smtp_user, smtp_pass" }, 400);
}
const connector = new SmtpSendConnector({
host: body.smtp_host,
port: body.smtp_port ?? 587,
secure: (body.smtp_tls ?? 1) === 1,
auth: { user: body.smtp_user, pass: body.smtp_pass },
});
const ok = await connector.verify();
return c.json({ ok, error: ok ? undefined : "SMTP connection verification failed" });
});
return api;
}
/** Find or create a "Sent" folder for the identity */
function findOrCreateSentFolder(db: Database.Database, identityId: number): number {
// Look for existing Sent folder (by special_use or name)
const existing = db
.prepare(
`SELECT id FROM folders
WHERE identity_id = ? AND (special_use = '\\\\Sent' OR path IN ('Sent', '[Gmail]/Sent Mail', 'INBOX.Sent'))
LIMIT 1`,
)
.get(identityId) as FolderRow | undefined;
if (existing) return existing.id;
// Create a local Sent folder
const result = db
.prepare(
`INSERT INTO folders (identity_id, path, name, delimiter, flags, special_use, message_count, unread_count)
VALUES (?, 'Sent', 'Sent', '/', '[]', '\\Sent', 0, 0)`,
)
.run(identityId);
return Number(result.lastInsertRowid);
}
/** Get the next UID for locally-stored messages (negative to avoid IMAP UID conflicts) */
function getNextLocalUid(db: Database.Database, folderId: number): number {
const row = db
.prepare("SELECT MIN(uid) as min_uid FROM messages WHERE folder_id = ?")
.get(folderId) as { min_uid: number | null };
// Use negative UIDs for locally-stored outgoing messages to avoid
// conflicts with IMAP UIDs (which are always positive)
const minUid = row.min_uid ?? 0;
return minUid < 0 ? minUid - 1 : -1;
}
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