/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

declare module 'vscode' {

  export interface ChatAgent2 {
    onDidPerformAction: Event<ChatAgentUserActionEvent>;
    supportIssueReporting?: boolean;
  }

  export interface ChatAgentErrorDetails {
    /**
     * If set to true, the message content is completely hidden. Only ChatAgentErrorDetails#message will be shown.
     */
    responseIsRedacted?: boolean;
  }

  /**
   * This is temporary until inline references are fully supported and adopted
   */
  export interface ChatAgentMarkdownContent {
    markdownContent: MarkdownString;
  }

  export interface ChatAgentDetectedAgent {
    agentName: string;
    command?: ChatAgentSlashCommand;
  }

  export interface ChatAgentVulnerability {
    title: string;
    description: string;
    // id: string; // Later we will need to be able to link these across multiple content chunks.
  }

  export interface ChatAgentContent {
    vulnerabilities?: ChatAgentVulnerability[];
  }

  export type ChatAgentExtendedProgress = ChatAgentProgress
    | ChatAgentMarkdownContent
    | ChatAgentDetectedAgent;

  export interface ChatAgent2 {
    /**
     * Provide a set of variables that can only be used with this agent.
     */
    agentVariableProvider?: { provider: ChatAgentCompletionItemProvider; triggerCharacters: string[] };
  }

  export interface ChatAgentCompletionItemProvider {
    provideCompletionItems(query: string, token: CancellationToken): ProviderResult<ChatAgentCompletionItem[]>;
  }

  export class ChatAgentCompletionItem {
    label: string | CompletionItemLabel;
    values: ChatVariableValue[];
    insertText?: string;
    detail?: string;
    documentation?: string | MarkdownString;

    constructor(label: string | CompletionItemLabel, values: ChatVariableValue[]);
  }

  export type ChatAgentExtendedHandler = (request: ChatAgentRequest, context: ChatAgentContext, progress: Progress<ChatAgentExtendedProgress>, token: CancellationToken) => ProviderResult<ChatAgentResult2>;

  export namespace chat {
    /**
     * Create a chat agent with the extended progress type
     */
    export function createChatAgent(name: string, handler: ChatAgentExtendedHandler): ChatAgent2;
  }

  /*
   * User action events
   */

  export enum ChatAgentCopyKind {
    // Keyboard shortcut or context menu
    Action = 1,
    Toolbar = 2
  }

  export interface ChatAgentCopyAction {
    // eslint-disable-next-line local/vscode-dts-string-type-literals
    kind: 'copy';
    codeBlockIndex: number;
    copyKind: ChatAgentCopyKind;
    copiedCharacters: number;
    totalCharacters: number;
    copiedText: string;
  }

  export interface ChatAgentInsertAction {
    // eslint-disable-next-line local/vscode-dts-string-type-literals
    kind: 'insert';
    codeBlockIndex: number;
    totalCharacters: number;
    newFile?: boolean;
  }

  export interface ChatAgentTerminalAction {
    // eslint-disable-next-line local/vscode-dts-string-type-literals
    kind: 'runInTerminal';
    codeBlockIndex: number;
    languageId?: string;
  }

  export interface ChatAgentCommandAction {
    // eslint-disable-next-line local/vscode-dts-string-type-literals
    kind: 'command';
    command: ChatAgentCommandFollowup;
  }

  export interface ChatAgentSessionFollowupAction {
    // eslint-disable-next-line local/vscode-dts-string-type-literals
    kind: 'followUp';
    followup: ChatAgentReplyFollowup;
  }

  export interface ChatAgentBugReportAction {
    // eslint-disable-next-line local/vscode-dts-string-type-literals
    kind: 'bug';
  }

  export interface ChatAgentUserActionEvent {
    readonly result: ChatAgentResult2;
    readonly action: ChatAgentCopyAction | ChatAgentInsertAction | ChatAgentTerminalAction | ChatAgentCommandAction | ChatAgentSessionFollowupAction | ChatAgentBugReportAction;
  }
}