import { Endpoint, Filename, Technologies, RelatedFile, BaseCopilotMetadata, CustomPrompt, AIRequestHandler, Copilot as Copilot$1, PromptData } from '@monacopilot/core';
export { CopilotOptions, CustomCopilotModel, MistralModel, Model, Provider } from '@monacopilot/core';
import * as monaco from 'monaco-editor/esm/vs/editor/editor.api';

type Monaco = typeof monaco;
type StandaloneCodeEditor = monaco.editor.IStandaloneCodeEditor;
type CursorPosition = monaco.IPosition;
type EditorRange = monaco.IRange;

type FetchCompletionItemHandler = (params: FetchCompletionItemParams) => Promise<FetchCompletionItemReturn>;
type FetchCompletionItemReturn = {
    completion: string | null;
    error?: string;
};
interface FetchCompletionItemParams {
    body: CompletionRequestBody;
}

type CompletionMetadata = BaseCopilotMetadata;
interface RegisterCompletionOptions {
    /**
     * Language of the current model
     */
    language: string;
    /**
     * The API endpoint of the server that you set up to receive completion requests.
     */
    endpoint?: Endpoint;
    /**
     * Specifies when the completion service should provide code completions.
     *
     * Options:
     * - `'onIdle'`: Provides completions after a brief pause in typing.
     * - `'onTyping'`: Provides completions in real-time as you type.
     *   - *Consideration:* May initiate additional background requests to deliver real-time suggestions.
     * - `'onDemand'`: Completions are not provided automatically. You need to trigger the completion manually, possibly by using the `trigger` function from `registerCompletion` return.
     *
     * @default 'onIdle'
     */
    trigger?: Trigger;
    /**
     * The name of the file you are editing. This is used to provide more relevant completions based on the file's purpose.
     * For example, if you are editing a file named `utils.js`, the completions will be more relevant to utility functions.
     */
    filename?: Filename;
    /**
     * The technologies (libraries, frameworks, etc.) you want to use for the completion.
     * This can provide technology-specific completions.
     * If you don't specify a technology, the completion will be specific to the language (provided as the `language`).
     *
     * @example
     * ['react', 'nextjs', 'tailwindcss', 'tanstack/react-query']
     * ['tensorflow', 'keras', 'numpy', 'pandas']
     * etc.
     */
    technologies?: Technologies;
    /**
     * Helps to give more relevant completions based on the full context.
     * You can include things like the contents/codes of other files in the same workspace.
     */
    relatedFiles?: RelatedFile[];
    /**
     * The maximum number of lines of code to include in the completion request.
     * This limits the request size to the model to prevent `429 Too Many Requests` errors
     * and reduce costs for long code.
     *
     * @default 100
     */
    maxContextLines?: number;
    /**
     * Determines if completions should be cached.
     * Enabling caching can enhance performance by reusing previous results when the cursor position and context remain the same while editing.
     * @default true
     */
    enableCaching?: boolean;
    /**
     * Controls whether follow-up completions are allowed immediately after accepting a completion.
     * When enabled (default), the system will generate new completion right after accepting one.
     * @default true
     */
    allowFollowUpCompletions?: boolean;
    /**
     * When an error occurs during the completion process or requests, Monacopilot will log it to the console by default
     * rather than throwing errors. This ensures smooth editing even when completions are unavailable.
     * You can provide this callback to handle errors yourself, which will disable the default console logging.
     * @param error - The error object containing information about the encountered error.
     */
    onError?: (error: Error) => void;
    /**
     * You can implement your own logic for fetching and processing completions.
     * The function should return either a string (the completion to be inserted into the editor) or null.
     */
    requestHandler?: FetchCompletionItemHandler;
    /**
     * Callback function that is triggered when a completion is shown in the editor.
     * @param completion - The completion text that is being shown.
     * @param range - The editor range where the completion will be inserted.
     */
    onCompletionShown?: (completion: string, range: EditorRange | undefined) => void;
    /**
     * Callback function triggered when a completion is accepted by the user.
     */
    onCompletionAccepted?: () => void;
    /**
     * Callback function triggered when a completion is rejected by the user.
     */
    onCompletionRejected?: () => void;
    /**
     * Callback function triggered when a completion is requested.
     * @param {FetchCompletionItemParams} params - The parameters being used for the completion request,
     * including the endpoint and request body with completion metadata.
     */
    onCompletionRequested?: (params: FetchCompletionItemParams) => void;
    /**
     * Callback function triggered when a completion request has finished.
     * @param {FetchCompletionItemParams} params - The parameters that were used for the completion request,
     * including the endpoint and request body with completion metadata.
     * @param {FetchCompletionItemReturn} response - The response from the completion request, which includes the completion text and error if any.
     * @example
     * ```ts
     * onCompletionRequestFinished: (params, response) => {
     *     console.log(params);
     *     console.log(`Completion text: ${response.completion}`);
     * }
     * ```
     */
    onCompletionRequestFinished?: (params: FetchCompletionItemParams, response: FetchCompletionItemReturn) => void;
    /**
     * Optional function to determine whether a completion should be triggered.
     * This allows for custom logic to control when completions are shown.
     *
     * @param {object} params - Parameters for the trigger decision
     * @param {string} params.text - The current text in the editor
     * @param {CursorPosition} params.position - The current cursor position
     * @param {Trigger} params.triggerType - The type of trigger that initiated the completion
     * @returns {boolean} - Return true to allow the completion, false to prevent it
     */
    triggerIf?: (params: {
        text: string;
        position: CursorPosition;
        triggerType: Trigger;
    }) => boolean;
}
type Trigger = 'onTyping' | 'onIdle' | 'onDemand';
interface CompletionRegistration {
    /**
     * Triggers the completion.
     */
    trigger: () => void;
    /**
     * Deregisters the completion provider and cleans up all associated resources.
     * This should be called when unmounting the editor or when completion features
     * are no longer needed to prevent memory leaks and ensure proper cleanup.
     */
    deregister: () => void;
    /**
     * Updates the completion options dynamically.
     * This method allows you to modify the completion configuration at runtime
     * by providing a callback function that receives the current options and
     * returns the partial options to update.
     *
     * @param {function} callback - A function that receives the current options and returns partial options to update
     * @param {RegisterCompletionOptions} callback.currentOptions - The current completion options
     * @returns {Partial<RegisterCompletionOptions>} - Partial options to merge with the current configuration
     * @example
     * ```ts
     * registration.updateOptions((currentOptions) => ({
     *   trigger: 'onDemand',
     *   maxTokens: 100
     * }));
     * ```
     */
    updateOptions: (callback: (currentOptions: RegisterCompletionOptions) => Partial<RegisterCompletionOptions>) => void;
}
interface CompletionRequest {
    /**
     * The body of the completion request.
     */
    body: CompletionRequestBody;
    /**
     * Additional options to include in the completion request.
     */
    options?: CompletionRequestOptions;
}
interface CompletionRequestBody {
    /**
     * The metadata required to generate the completion.
     */
    completionMetadata: CompletionMetadata;
}
interface CompletionRequestOptions {
    /**
     * Custom prompt generator function for the completion request.
     * This function allows you to override the default prompt
     * used in the completion request, providing more control over the AI's context and behavior.
     *
     * @param completionMetadata - Metadata about the current completion context
     * @returns A partial PromptData object that can override context and/or instruction
     * @see {@link https://github.com/arshad-yaseen/monacopilot/blob/main/packages/monacopilot/src/prompt.ts | Monacopilot default prompt implementation}
     */
    customPrompt?: CustomPrompt<CompletionMetadata>;
    /**
     * Custom request handler to override the default fetch behavior when making requests to the LLM provider.
     *
     * This allows you to use your own HTTP client (like axios, got, etc.) or add custom logic
     * such as authentication, retry mechanisms, or request/response transformation.
     *
     * @param params - The request parameters
     * @param params.endpoint - The API endpoint URL for the LLM completion request
     * @param params.body - The request body containing completion parameters (model, prompt, etc.)
     * @param params.headers - HTTP headers for authentication and content type
     * @returns A Promise that resolves to the response object returned by the LLM provider
     *
     * @example
     * ```ts
     * aiRequestHandler: async ({ endpoint, body, headers }) => {
     *     const response = await fetch(endpoint, {
     *         method: 'POST',
     *         headers: { ...headers, 'X-Custom-Header': 'value' },
     *         body: JSON.stringify(body),
     *     })
     *     if (!response.ok) {
     *         throw new Error("Failed to get completion")
     *     }
     *     return response.json()
     * }
     * ```
     *
     * @example
     * ```ts
     * aiRequestHandler: async ({ endpoint, body, headers }) => {
     *     const response = await axios.post(endpoint, body, {
     *         headers: { ...headers, 'X-Custom-Header': 'value' },
     *         timeout: 30000,
     *     })
     *     return response.data
     * }
     * ```
     */
    aiRequestHandler?: AIRequestHandler;
}
interface CompletionResponse {
    /**
     * The completion text.
     */
    completion: string | null;
    /**
     * The error message.
     */
    error?: string;
    /**
     * The raw response from the LLM.
     */
    raw?: unknown;
}

declare class CompletionCopilot extends Copilot$1<CompletionMetadata> {
    complete(request: CompletionRequest): Promise<CompletionResponse>;
    protected getDefaultPrompt(metadata: CompletionMetadata): PromptData;
}

/**
 * Registers completion functionality with the Monaco editor.
 * @param monaco - The Monaco instance.
 * @param editor - The editor instance.
 * @param options - Options for the completion.
 * @returns A CompletionRegistration object with deregister and trigger methods.
 */
declare const registerCompletion: (monaco: Monaco, editor: StandaloneCodeEditor, options: RegisterCompletionOptions) => CompletionRegistration;

/** @deprecated Use `CompletionCopilot` instead */
declare const Copilot: typeof CompletionCopilot;

export { CompletionCopilot, type CompletionMetadata, type CompletionRegistration, type CompletionRequest, type CompletionRequestBody, type CompletionRequestOptions, Copilot, type Monaco, type RegisterCompletionOptions, type StandaloneCodeEditor, registerCompletion };