import { BaseConnector } from '../../base/base.connector';
import type { IEmailOptions, IEmailProvider, ISendMessageSuccessResponse, WithPassthrough, EmailSendInput, EmailSendResult, IEmailConnector } from '../../types';
import { ChannelTypeEnum } from '../../types';
import type { BrevoConfig } from './brevo.config';
export declare class BrevoEmailConnector extends BaseConnector implements IEmailProvider, IEmailConnector {
    private config;
    readonly id = "brevo";
    readonly channelType: ChannelTypeEnum.EMAIL;
    constructor(config: BrevoConfig, fetchImpl?: typeof fetch);
    /**
     * Thinwrap-native send. Implements `IEmailConnector`.
     *
     * ** pre-flight guard:** if any `attachments[].contentId` is set, throws
     * `ConnectorError({ providerCode: 'invalid_request', statusCode: 0 })` BEFORE
     * any HTTP call — Brevo's `/v3/smtp/email` has no first-class cid mechanism.
     * This is the canonical outlier "vendor doesn't support a baseline
     * field" throw the >=90% baseline-coverage rule.
     *
     * Brevo's wire shape is already camelCase, matching Thinwrap's input shape;
     * only field renames (`from` → `sender`, `html` → `htmlContent`,
     * `text` → `textContent`, `attachments` → `attachment` singular) are
     * hand-mapped inline. No `casingTransform()` invocation needed — neither on
     * the connector body nor on `_passthrough.body`.
     */
    send(input: EmailSendInput): Promise<EmailSendResult>;
    /**
     * Build the Brevo wire body from Thinwrap's `EmailSendInput`. Hand-maps the
     * field renames where Thinwrap's name diverges from Brevo's:
     *   - `from` → `sender: { email, name? }`
     *   - `to`/`cc`/`bcc` strings → `[{ email }]`
     *   - `html` → `htmlContent`, `text` → `textContent`
     *   - `replyTo` → `replyTo: { email }`
     *   - `attachments` → `attachment` (singular) — name + base64 content only.
     *
     * The `contentId` guard at the top of `send()` ensures that no attachment
     * here carries a `contentId`. Brevo's attachment shape supports only
     * `{ name, content }`; `contentType` is implicit from filename per their docs.
     */
    private buildBrevoBody;
    /**
     * Map Brevo error responses to canonical `ConnectorError` with the 6-value
     * `ProviderCode` union. Parses `Retry-After`:
     * parsed seconds embedded in `providerMessage` text; raw header value on
     * `cause.retryAfter`. No structured `retryAfterSeconds` field per
     * Retry is consumer policy (no retryAfterSeconds field).
     */
    private mapVendorError;
    sendMessage(options: IEmailOptions, bridgeProviderData?: WithPassthrough<Record<string, unknown>>): Promise<ISendMessageSuccessResponse>;
}