/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
export const PREVIEW_GEMINI_MODEL = 'gemini-3-pro-preview';
export const DEFAULT_GEMINI_MODEL = 'gemini-2.5-pro';
export const DEFAULT_GEMINI_FLASH_MODEL = 'gemini-2.5-flash';
export const DEFAULT_GEMINI_FLASH_LITE_MODEL = 'gemini-2.5-flash-lite';
export const DEFAULT_GEMINI_MODEL_AUTO = 'auto';
// Model aliases for user convenience.
export const GEMINI_MODEL_ALIAS_PRO = 'pro';
export const GEMINI_MODEL_ALIAS_FLASH = 'flash';
export const GEMINI_MODEL_ALIAS_FLASH_LITE = 'flash-lite';
export const DEFAULT_GEMINI_EMBEDDING_MODEL = 'gemini-embedding-001';
// Cap the thinking at 8192 to prevent run-away thinking loops.
export const DEFAULT_THINKING_MODE = 8192;
/**
 * Resolves the requested model alias (e.g., 'auto', 'pro', 'flash', 'flash-lite')
 * to a concrete model name, considering preview features.
 *
 * @param requestedModel The model alias or concrete model name requested by the user.
 * @param previewFeaturesEnabled A boolean indicating if preview features are enabled.
 * @returns The resolved concrete model name.
 */
export function resolveModel(requestedModel, previewFeaturesEnabled) {
    switch (requestedModel) {
        case DEFAULT_GEMINI_MODEL_AUTO:
        case GEMINI_MODEL_ALIAS_PRO: {
            return previewFeaturesEnabled
                ? PREVIEW_GEMINI_MODEL
                : DEFAULT_GEMINI_MODEL;
        }
        case GEMINI_MODEL_ALIAS_FLASH: {
            return DEFAULT_GEMINI_FLASH_MODEL;
        }
        case GEMINI_MODEL_ALIAS_FLASH_LITE: {
            return DEFAULT_GEMINI_FLASH_LITE_MODEL;
        }
        default: {
            return requestedModel;
        }
    }
}
/**
 * Determines the effective model to use, applying fallback logic if necessary.
 *
 * When fallback mode is active, this function enforces the use of the standard
 * fallback model. However, it makes an exception for "lite" models (any model
 * with "lite" in its name), allowing them to be used to preserve cost savings.
 * This ensures that "pro" models are always downgraded, while "lite" model
 * requests are honored.
 *
 * @param isInFallbackMode Whether the application is in fallback mode.
 * @param requestedModel The model that was originally requested.
 * @param previewFeaturesEnabled A boolean indicating if preview features are enabled.
 * @returns The effective model name.
 */
export function getEffectiveModel(isInFallbackMode, requestedModel, previewFeaturesEnabled) {
    const resolvedModel = resolveModel(requestedModel, previewFeaturesEnabled);
    // If we are not in fallback mode, simply use the resolved model.
    if (!isInFallbackMode) {
        return resolvedModel;
    }
    // If a "lite" model is requested, honor it. This allows for variations of
    // lite models without needing to list them all as constants.
    if (resolvedModel.includes('lite')) {
        return resolvedModel;
    }
    // Default fallback for Gemini CLI.
    return DEFAULT_GEMINI_FLASH_MODEL;
}
/**
 * Checks if the model is a Gemini 2.x model.
 *
 * @param model The model name to check.
 * @returns True if the model is a Gemini 2.x model.
 */
export function isGemini2Model(model) {
    return /^gemini-2(\.|$)/.test(model);
}
//# sourceMappingURL=models.js.map