import type { JTDSchemaJson, SignalDescriptorJson } from '../api';
import { type ConvertFailure, type ConvertSuccess, type ConvertSuccessBinary, type ConvertSuccessJson, type ConvertSuccessSignals } from '../schema-utils';
/**
 * JSON Schema subset accepted by the Anthropic structured-output API.
 *
 * This is the provider-specific representation produced by
 * {@link AnthropicConversion}. It covers the keywords that Anthropic
 * inspects when constraining model output: `type`, `properties`, `required`,
 * `additionalProperties`, `enum`, `const`, `format`, `items`, `anyOf`,
 * `$defs`, `$ref`, and `description`.
 */
export interface AnthropicSchema {
    type?: string | string[];
    description?: string;
    properties?: Record<string, AnthropicSchema>;
    required?: string[];
    additionalProperties?: false;
    enum?: (string | number | boolean | null)[];
    const?: string | number | boolean | null;
    format?: string;
    items?: AnthropicSchema;
    anyOf?: AnthropicSchema[];
    $defs?: Record<string, AnthropicSchema>;
    $ref?: string;
}
export type { ConvertFailure, ConvertResult, ConvertSuccess, ConvertSuccessBinary, ConvertSuccessJson, ConvertSuccessSignals } from '../schema-utils';
/**
 * Converts JTD schemas or Adapt signal descriptors into Anthropic-compatible
 * JSON Schema, and converts raw LLM output back into validated data.
 *
 * ### JTD form mapping
 * - **type** -- mapped to the corresponding JSON Schema `type` (`string`,
 *   `number`, `integer`, `boolean`). Integer sub-types (int8 .. uint32)
 *   have their bounds described in `description` (Anthropic does not
 *   support `minimum`/`maximum`). `timestamp` becomes `string` with
 *   `format: "date-time"`.
 * - **enum** -- mapped to `type: "string"` with an `enum` array.
 * - **elements** -- mapped to `type: "array"` with `items`.
 * - **properties / optionalProperties** -- mapped to `type: "object"` with
 *   `properties`, `required`, and `additionalProperties: false`. Unlike
 *   OpenAI, **optional properties are kept genuinely optional** -- they are
 *   not added to the `required` array. This avoids forced nullability.
 * - **values** -- mapped to an array of `{key, value}` objects because
 *   Anthropic does not support `additionalProperties` with a schema value.
 *   During {@link convert}, the array is coerced back into a plain `Record`.
 * - **discriminator** -- mapped to `anyOf` with one variant per mapping
 *   entry. Each variant is a flat object containing the discriminator key
 *   (with a `const` value) plus the variant's own properties.
 *
 * ### Unstructured schemas
 * Empty JTD schemas or schemas with only `additionalProperties: true` are
 * considered unstructured. They produce an empty `{}` JSON Schema with
 * `strict: false`, and during {@link convert} the raw string output is
 * parsed via `JSON.parse` back into an arbitrary value.
 *
 * ### MIME formats
 * MIME signal formats become `type: "string"` with a description requesting
 * base64-encoded content. On {@link convert}, the base64 string is decoded
 * into a {@link ConvertSuccessBinary} result.
 *
 * ### Circular references
 * Anthropic does not support recursive schemas. {@link fromJTD} will throw
 * if any circular reference is detected among the JTD definitions.
 *
 * ### Serialization
 * `JSON.stringify(conv)` produces a JSON-safe object via {@link toJSON}.
 * Use {@link fromJSON} to restore a fully functional instance from the
 * serialized form (string or parsed object).
 *
 * ```ts
 * const conv = AnthropicConversion.fromJTD(jtdSchema);
 * conv.schema;           // Anthropic JSON Schema to pass to the LLM
 * conv.strict;           // whether strict mode applies
 * conv.convert(output);  // coerce + validate -> ConvertResult
 *
 * // Serialize & restore
 * const cached = JSON.stringify(conv);
 * const restored = AnthropicConversion.fromJSON(cached);
 * ```
 */
export declare class AnthropicConversion<T extends ConvertSuccess = ConvertSuccess> {
    /** The Anthropic-specific JSON Schema to pass to the Anthropic API as the tool input schema. */
    readonly schema: AnthropicSchema;
    /**
     * Whether the schema qualifies for Anthropic strict structured-output mode.
     *
     * This is `false` when the root JTD schema is empty or unstructured (e.g.
     * the empty schema `{}` or a properties form with no real properties and
     * `additionalProperties: true`). In that case `schema` is `{}` and the
     * model output is unconstrained.
     */
    readonly strict: boolean;
    /**
     * The original JTD schema used to build this conversion.
     * Set when created via {@link fromJTD}; `undefined` when created via {@link fromSignal}.
     */
    readonly jtdSchema?: JTDSchemaJson;
    /**
     * The original signal descriptor used to build this conversion.
     * Set when created via {@link fromSignal}; `undefined` when created via {@link fromJTD}.
     */
    readonly descriptor?: SignalDescriptorJson;
    /**
     * The original signal descriptors used to build this conversion.
     * Set when created via {@link fromSignals}; `undefined` otherwise.
     */
    readonly descriptors?: SignalDescriptorJson[];
    /**
     * Build a conversion from a JTD schema.
     *
     * Recursively converts every JTD form into the equivalent Anthropic JSON
     * Schema node. Definitions (`jtdSchema.definitions`) are emitted as `$defs`
     * at the root level, and references become `$ref` pointers.
     *
     * If the root schema is unstructured, the result has an empty `schema` and
     * `strict: false`.
     *
     * @param jtdSchema - A valid JTD schema (RFC 8927).
     * @returns A new {@link AnthropicConversion} with `jtdSchema` set.
     * @throws If the schema contains an unknown JTD type, an unresolved `ref`,
     *         nesting exceeding 32 levels, or **any circular reference** among
     *         definitions (Anthropic does not support recursive schemas).
     */
    static fromJTD(jtdSchema: JTDSchemaJson): AnthropicConversion<ConvertSuccessJson>;
    /**
     * Build a conversion from an Adapt signal descriptor.
     *
     * If the descriptor has a single format, its schema is used directly
     * (unwrapped). If it has multiple formats, a wrapper object schema is
     * produced with `format_0`, `format_1`, ... properties. Unlike OpenAI,
     * the format properties are genuinely optional (not listed in `required`),
     * so the LLM only needs to provide the one it chooses.
     *
     * @param descriptor - An Adapt signal descriptor with one or more formats.
     * @returns A new {@link AnthropicConversion} with `descriptor` set.
     * @throws If the descriptor has no formats, or a format has neither
     *         `jtdSchema` nor `mimeType`.
     */
    static fromSignal(descriptor: SignalDescriptorJson, sharedDefs?: Record<string, JTDSchemaJson>): AnthropicConversion<ConvertSuccessJson | ConvertSuccessBinary>;
    /**
     * Build a conversion from multiple signal descriptors.
     *
     * Produces an object schema with one property per signal, suitable for
     * use as structured output parameters. Each signal's schema is built via
     * {@link fromSignal} internally.
     *
     * For Anthropic, optional signals are genuinely optional -- they are NOT
     * added to `required` (no nullable wrapping needed).
     *
     * Receiver/transceiver compatible:
     * ```ts
     * const conv = AnthropicConversion.fromSignals(
     *   receiver.signals!,
     *   receiver.description,
     *   receiver.name
     * );
     * ```
     *
     * @param signals - Array of signal descriptors.
     * @param description - Optional description for the compound schema.
     * @param label - Optional label (reserved for other providers).
     * @returns A new {@link AnthropicConversion} with `descriptors` set.
     * @throws If any signal has no formats or an invalid format.
     */
    static fromSignals(signals: SignalDescriptorJson[], description?: string, label?: string): AnthropicConversion<ConvertSuccessSignals>;
    /**
     * Restore an {@link AnthropicConversion} from its serialized form.
     *
     * Accepts either the JSON string produced by `JSON.stringify(conv)` or the
     * already-parsed plain object. The original `jtdSchema` or `descriptor` is
     * re-processed through the corresponding factory, so the restored instance
     * is fully functional.
     *
     * @param data - A JSON string or parsed object previously produced by {@link toJSON}.
     * @returns A fully reconstructed {@link AnthropicConversion}.
     * @throws If the serialized data contains neither `jtdSchema` nor `descriptor`.
     */
    static fromJSON(data: string | Record<string, unknown>): AnthropicConversion;
    private constructor();
    /**
     * Convert raw LLM output into a validated result.
     *
     * For JTD-based conversions, the value is coerced to conform to the original
     * JTD schema:
     * - Non-integer numbers are rounded for integer types.
     * - `{key, value}` arrays from the values form are reassembled into Records.
     * - Unstructured/empty schemas parse the raw JSON string via `JSON.parse`.
     *
     * Unlike OpenAI, no null-stripping is needed for optional properties because
     * Anthropic keeps them genuinely optional (not in `required`).
     *
     * The coerced value is then validated against the JTD schema. Returns
     * {@link ConvertSuccessJson} on success.
     *
     * For MIME-based conversions, the value is expected to be a base64 string
     * which is decoded into raw bytes. Returns {@link ConvertSuccessBinary}.
     *
     * For multi-format signals, the first non-null `format_N` property is
     * selected and converted individually.
     *
     * @param json - The raw value returned by the Anthropic API (typically parsed JSON).
     * @returns A {@link ConvertResult} indicating success or failure with errors.
     */
    convert: (json: unknown) => T | ConvertFailure;
    /**
     * Produce a JSON-serializable representation of this conversion.
     *
     * The output includes the Anthropic `schema`, `strict` flag, and either the
     * original `jtdSchema` or `descriptor` (whichever was used to create this
     * instance), which is sufficient to fully restore the conversion via
     * {@link fromJSON}.
     *
     * Called automatically by `JSON.stringify(conv)`.
     */
    toJSON(): Record<string, unknown>;
}
/**
 * Convenience alias for {@link AnthropicConversion.fromJTD}.
 *
 * @param jtdSchema - A valid JTD schema (RFC 8927).
 * @returns A new {@link AnthropicConversion}.
 */
export declare function convertToAnthropicSchema(jtdSchema: JTDSchemaJson): AnthropicConversion<ConvertSuccessJson>;
/**
 * Convenience alias for {@link AnthropicConversion.fromSignal}.
 *
 * @param descriptor - An Adapt signal descriptor.
 * @returns A new {@link AnthropicConversion}.
 */
export declare function convertSignalToAnthropicSchema(descriptor: SignalDescriptorJson): AnthropicConversion<ConvertSuccessJson | ConvertSuccessBinary>;
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