import nunjucks, { type Callback, type LoaderSource } from "nunjucks";
import { z } from "zod";
import type { ChatModelInputMessage, ChatModelInputMessageContent, ChatModelOutputToolCall } from "../agents/chat-model.js";
export interface FormatOptions {
    workingDir?: string;
}
export declare class PromptTemplate {
    template: string;
    static from(template: string): PromptTemplate;
    constructor(template: string);
    format(variables?: Record<string, unknown>, options?: FormatOptions): Promise<string>;
}
export declare class CustomLoader extends nunjucks.Loader {
    options: {
        workingDir: string;
    };
    constructor(options: {
        workingDir: string;
    });
    async: boolean;
    isRelative(filename: string): boolean;
    resolve(from: string, to: string): string;
    getSource(name: string, callback: Callback<Error, LoaderSource>): LoaderSource;
}
export declare class ChatMessageTemplate {
    role: "system" | "user" | "agent" | "tool";
    content?: ChatModelInputMessage["content"];
    name?: string | undefined;
    options?: FormatOptions | undefined;
    cacheControl?: ChatModelInputMessage["cacheControl"];
    constructor(role: "system" | "user" | "agent" | "tool", content?: ChatModelInputMessage["content"], name?: string | undefined, options?: FormatOptions | undefined, cacheControl?: ChatModelInputMessage["cacheControl"]);
    format(variables?: Record<string, unknown>, options?: FormatOptions): Promise<ChatModelInputMessage>;
}
export declare class SystemMessageTemplate extends ChatMessageTemplate {
    static from(content: string, name?: string, options?: FormatOptions, cacheControl?: ChatModelInputMessage["cacheControl"]): SystemMessageTemplate;
}
export declare class UserMessageTemplate extends ChatMessageTemplate {
    static from(template: ChatModelInputMessageContent, name?: string, options?: FormatOptions, cacheControl?: ChatModelInputMessage["cacheControl"]): UserMessageTemplate;
}
export declare class AgentMessageTemplate extends ChatMessageTemplate {
    toolCalls?: ChatModelOutputToolCall[] | undefined;
    static from(template?: ChatModelInputMessage["content"], toolCalls?: ChatModelOutputToolCall[], name?: string, options?: FormatOptions, cacheControl?: ChatModelInputMessage["cacheControl"]): AgentMessageTemplate;
    constructor(content?: ChatModelInputMessage["content"], toolCalls?: ChatModelOutputToolCall[] | undefined, name?: string, options?: FormatOptions, cacheControl?: ChatModelInputMessage["cacheControl"]);
    format(_variables?: Record<string, unknown>, _options?: FormatOptions): Promise<{
        role: "agent" | "user" | "system" | "tool";
        name: string | undefined;
        content: ChatModelInputMessageContent | undefined;
        toolCalls: ChatModelOutputToolCall[] | undefined;
        cacheControl: import("../index.js").CacheControl | undefined;
    }>;
}
export declare class ToolMessageTemplate extends ChatMessageTemplate {
    toolCallId: string;
    static from(content: object | string, toolCallId: string, name?: string, options?: FormatOptions, cacheControl?: ChatModelInputMessage["cacheControl"]): ToolMessageTemplate;
    constructor(content: object | string, toolCallId: string, name?: string, options?: FormatOptions, cacheControl?: ChatModelInputMessage["cacheControl"]);
    format(_variables?: Record<string, unknown>, _options?: FormatOptions): Promise<{
        role: "agent" | "user" | "system" | "tool";
        name: string | undefined;
        content: ChatModelInputMessageContent | undefined;
        toolCallId: string;
        cacheControl: import("../index.js").CacheControl | undefined;
    }>;
}
export declare class ChatMessagesTemplate {
    messages: ChatMessageTemplate[];
    static from(messages: ChatMessageTemplate[] | string): ChatMessagesTemplate;
    constructor(messages: ChatMessageTemplate[]);
    copy(): ChatMessagesTemplate;
    format(variables?: Record<string, unknown>, options?: FormatOptions): Promise<ChatModelInputMessage[]>;
}
declare const chatMessageSchema: z.ZodUnion<[z.ZodObject<{
    role: z.ZodLiteral<"system">;
    content: z.ZodString;
    name: z.ZodOptional<z.ZodString>;
    cacheControl: z.ZodOptional<z.ZodObject<{
        type: z.ZodLiteral<"ephemeral">;
        ttl: z.ZodOptional<z.ZodUnion<[z.ZodLiteral<"5m">, z.ZodLiteral<"1h">]>>;
    }, "strip", z.ZodTypeAny, {
        type: "ephemeral";
        ttl?: "5m" | "1h" | undefined;
    }, {
        type: "ephemeral";
        ttl?: "5m" | "1h" | undefined;
    }>>;
}, "strip", z.ZodTypeAny, {
    role: "system";
    content: string;
    name?: string | undefined;
    cacheControl?: {
        type: "ephemeral";
        ttl?: "5m" | "1h" | undefined;
    } | undefined;
}, {
    role: "system";
    content: string;
    name?: string | undefined;
    cacheControl?: {
        type: "ephemeral";
        ttl?: "5m" | "1h" | undefined;
    } | undefined;
}>, z.ZodObject<{
    role: z.ZodLiteral<"user">;
    content: z.ZodString;
    name: z.ZodOptional<z.ZodString>;
    cacheControl: z.ZodOptional<z.ZodObject<{
        type: z.ZodLiteral<"ephemeral">;
        ttl: z.ZodOptional<z.ZodUnion<[z.ZodLiteral<"5m">, z.ZodLiteral<"1h">]>>;
    }, "strip", z.ZodTypeAny, {
        type: "ephemeral";
        ttl?: "5m" | "1h" | undefined;
    }, {
        type: "ephemeral";
        ttl?: "5m" | "1h" | undefined;
    }>>;
}, "strip", z.ZodTypeAny, {
    role: "user";
    content: string;
    name?: string | undefined;
    cacheControl?: {
        type: "ephemeral";
        ttl?: "5m" | "1h" | undefined;
    } | undefined;
}, {
    role: "user";
    content: string;
    name?: string | undefined;
    cacheControl?: {
        type: "ephemeral";
        ttl?: "5m" | "1h" | undefined;
    } | undefined;
}>, z.ZodObject<{
    role: z.ZodLiteral<"agent">;
    content: z.ZodOptional<z.ZodString>;
    toolCalls: z.ZodOptional<z.ZodArray<z.ZodObject<{
        id: z.ZodString;
        type: z.ZodLiteral<"function">;
        function: z.ZodObject<{
            name: z.ZodString;
            arguments: z.ZodRecord<z.ZodString, z.ZodUnknown>;
        }, "strip", z.ZodTypeAny, {
            name: string;
            arguments: Record<string, unknown>;
        }, {
            name: string;
            arguments: Record<string, unknown>;
        }>;
    }, "strip", z.ZodTypeAny, {
        function: {
            name: string;
            arguments: Record<string, unknown>;
        };
        type: "function";
        id: string;
    }, {
        function: {
            name: string;
            arguments: Record<string, unknown>;
        };
        type: "function";
        id: string;
    }>, "many">>;
    name: z.ZodOptional<z.ZodString>;
    cacheControl: z.ZodOptional<z.ZodObject<{
        type: z.ZodLiteral<"ephemeral">;
        ttl: z.ZodOptional<z.ZodUnion<[z.ZodLiteral<"5m">, z.ZodLiteral<"1h">]>>;
    }, "strip", z.ZodTypeAny, {
        type: "ephemeral";
        ttl?: "5m" | "1h" | undefined;
    }, {
        type: "ephemeral";
        ttl?: "5m" | "1h" | undefined;
    }>>;
}, "strip", z.ZodTypeAny, {
    role: "agent";
    name?: string | undefined;
    content?: string | undefined;
    cacheControl?: {
        type: "ephemeral";
        ttl?: "5m" | "1h" | undefined;
    } | undefined;
    toolCalls?: {
        function: {
            name: string;
            arguments: Record<string, unknown>;
        };
        type: "function";
        id: string;
    }[] | undefined;
}, {
    role: "agent";
    name?: string | undefined;
    content?: string | undefined;
    cacheControl?: {
        type: "ephemeral";
        ttl?: "5m" | "1h" | undefined;
    } | undefined;
    toolCalls?: {
        function: {
            name: string;
            arguments: Record<string, unknown>;
        };
        type: "function";
        id: string;
    }[] | undefined;
}>, z.ZodObject<{
    role: z.ZodLiteral<"tool">;
    content: z.ZodEffects<z.ZodUnion<[z.ZodString, z.ZodRecord<z.ZodString, z.ZodUnknown>]>, string, string | Record<string, unknown>>;
    toolCallId: z.ZodString;
    name: z.ZodOptional<z.ZodString>;
    cacheControl: z.ZodOptional<z.ZodObject<{
        type: z.ZodLiteral<"ephemeral">;
        ttl: z.ZodOptional<z.ZodUnion<[z.ZodLiteral<"5m">, z.ZodLiteral<"1h">]>>;
    }, "strip", z.ZodTypeAny, {
        type: "ephemeral";
        ttl?: "5m" | "1h" | undefined;
    }, {
        type: "ephemeral";
        ttl?: "5m" | "1h" | undefined;
    }>>;
}, "strip", z.ZodTypeAny, {
    role: "tool";
    content: string;
    toolCallId: string;
    name?: string | undefined;
    cacheControl?: {
        type: "ephemeral";
        ttl?: "5m" | "1h" | undefined;
    } | undefined;
}, {
    role: "tool";
    content: string | Record<string, unknown>;
    toolCallId: string;
    name?: string | undefined;
    cacheControl?: {
        type: "ephemeral";
        ttl?: "5m" | "1h" | undefined;
    } | undefined;
}>]>;
export declare function safeParseChatMessages(messages: unknown): ChatMessageTemplate[] | undefined;
export declare function parseChatMessages(messages: (z.infer<typeof chatMessageSchema> & {
    options?: FormatOptions;
})[]): ChatMessageTemplate[];
export {};