import { ZodType } from "zod";
import { ConfigService } from "@nestjs/config";
import { BaseConfigInterface } from "../../../config/interfaces";
/**
 * Calls Mistral Document AI (OCR) on Azure AI Foundry.
 *
 * NOTE: this does NOT use the @mistralai/mistralai SDK — that SDK hardcodes Mistral's cloud
 * route (`<serverURL>/v1/ocr`) and cannot target the Azure Foundry route
 * (`<endpoint>/providers/mistral/azure/ocr`). We POST directly with Bearer auth instead.
 * The wire format is snake_case (image_url, document_annotation_format → json_schema.schema,
 * response document_annotation), built from the caller's Zod schema via convertZodToJsonSchema.
 *
 * `documentType` is returned as the raw extracted string; callers cast it to their own
 * domain enum (the service stays domain-agnostic).
 */
export declare class DocumentAiService {
    private readonly config;
    private readonly logger;
    private readonly CALL_TIMEOUT_MS;
    constructor(config: ConfigService<BaseConfigInterface>);
    extract(params: {
        imageDataUrl: string;
        outputSchema: ZodType<any>;
    }): Promise<{
        documentType: string | null;
        fields: Record<string, any>;
        confidence: number;
        tokenUsage: {
            input: number;
            output: number;
        };
        ocrText: string;
        /**
         * Number of pages the OCR provider actually processed. OCR is billed PER PAGE, not
         * per token, so this is the only usable cost signal for this call — callers multiply
         * it by `ai.documentAi.costPerPage` and record it as a `costOverride`.
         */
        pages: number;
    }>;
}
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