import type { UsageMetadata } from "../_core/types/index.js";
export interface PerplexityCost {
    input_tokens_cost: number;
    output_tokens_cost: number;
    request_cost: number;
    total_cost: number;
}
export interface PerplexityUsage {
    prompt_tokens: number;
    completion_tokens: number;
    total_tokens: number;
    search_context_size?: string;
    cost?: PerplexityCost;
}
export interface PerplexityChoice {
    index: number;
    message?: {
        role: string;
        content: string;
    };
    delta?: {
        role?: string;
        content?: string;
    };
    finish_reason: string | null;
}
export interface PerplexityResponse {
    id: string;
    object: string;
    created: number;
    model: string;
    choices: PerplexityChoice[];
    usage?: PerplexityUsage;
}
export interface PerplexityChatRequest {
    model: string;
    messages: Array<{
        role: "system" | "user" | "assistant";
        content: string;
    }>;
    max_tokens?: number;
    temperature?: number;
    top_p?: number;
    stream?: boolean;
    presence_penalty?: number;
    frequency_penalty?: number;
    response_format?: {
        type: string;
        json_schema?: {
            name: string;
        };
    } | string;
    usageMetadata?: UsageMetadata;
}
export interface PerplexityStreamChunk {
    id: string;
    object: string;
    created: number;
    model: string;
    choices: PerplexityChoice[];
}
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