import * as plugins from './plugins.js';

import * as aiDocsClasses from './aidocs_classes/index.js';

export class AiDoc {
  private openaiToken: string;

  public npmextraKV: plugins.npmextra.KeyValueStore;
  public qenvInstance: plugins.qenv.Qenv;
  public aidocInteract: plugins.smartinteract.SmartInteract;
  public smartAiInstance: plugins.smartai.SmartAi;

  argvArg: any;

  constructor(argvArg?: any) {
    this.argvArg = argvArg;
  }

  private printSanitizedToken() {
    // Check if the token length is greater than the sum of startLength and endLength
    let printToken: string;
    if (this.openaiToken.length > 6) {
      // Extract the beginning and end parts of the token
      const start = this.openaiToken.substring(0, 3);
      const end = this.openaiToken.substring(this.openaiToken.length - 3);
      printToken = `${start}...${end}`;
    } else {
      // If the token is not long enough, return it as is
      printToken = this.openaiToken;
    }
    console.log(`OpenAI Token on record: ${printToken}`);
  }

  public async start() {
    // lets care about prerequisites
    this.aidocInteract = new plugins.smartinteract.SmartInteract();
    this.qenvInstance = new plugins.qenv.Qenv();
    if (!(await this.qenvInstance.getEnvVarOnDemand('OPENAI_TOKEN'))) {
      // Migrate old KV store path to new path if needed
      const homeDir = plugins.smartpath.get.home();
      const oldKvPath = plugins.path.join(homeDir, '.npmextra/kv/tsdoc.json');
      const newKvDir = plugins.path.join(homeDir, '.npmextra/kv/@git.zone');
      const newKvPath = plugins.path.join(newKvDir, 'tsdoc.json');
      if (
        await plugins.fsInstance.file(oldKvPath).exists() &&
        !(await plugins.fsInstance.file(newKvPath).exists())
      ) {
        console.log('Migrating tsdoc KeyValueStore to @git.zone/tsdoc...');
        await plugins.fsInstance.directory(newKvDir).recursive().create();
        await plugins.fsInstance.file(oldKvPath).copy(newKvPath);
        await plugins.fsInstance.file(oldKvPath).delete();
        console.log('Migration complete: tsdoc.json -> @git.zone/tsdoc.json');
      }

      this.npmextraKV = new plugins.npmextra.KeyValueStore({
        typeArg: 'userHomeDir',
        identityArg: '@git.zone/tsdoc',
        mandatoryKeys: ['OPENAI_TOKEN'],
      });

      const missingKeys = await this.npmextraKV.getMissingMandatoryKeys();
      if (missingKeys.length > 0) {
        // lets try argv
        if (this.argvArg?.OPENAI_TOKEN) {
          this.openaiToken = this.argvArg.OPENAI_TOKEN;
        } else {
          // lets try smartinteract
          // wait for a second until OpenAI fixes punycode problem...
          await plugins.smartdelay.delayFor(1000);
          const answerObject = await this.aidocInteract.askQuestion({
            type: 'input',
            message: `Please provide your OpenAI token. This will be persisted in your home directory.`,
            name: 'OPENAI_TOKEN',
            default: '',
          });
          this.openaiToken = answerObject.value;
        }

        this.printSanitizedToken();
        await this.npmextraKV.writeKey('OPENAI_TOKEN', this.openaiToken);
      }
    }
    if (!this.openaiToken && this.npmextraKV) {
      this.openaiToken = await this.npmextraKV.readKey('OPENAI_TOKEN');
    }

    // lets assume we have an OPENAI_Token now
    this.smartAiInstance = new plugins.smartai.SmartAi({
      openaiToken: this.openaiToken,
    });
    await this.smartAiInstance.start();
  }

  public async stop() {
    if (this.smartAiInstance) {
      await this.smartAiInstance.stop();
    }
    // No explicit cleanup needed for npmextraKV or aidocInteract
    // They don't keep event loop alive
  }

  /**
   * Get the OpenAI provider for direct chat calls
   * This is a convenience getter to access the provider from SmartAi
   */
  public get openaiProvider(): plugins.smartai.OpenAiProvider {
    return this.smartAiInstance.openaiProvider;
  }

  public getOpenaiToken(): string {
    return this.openaiToken;
  }

  public async buildReadme(projectDirArg: string) {
    const readmeInstance = new aiDocsClasses.Readme(this, projectDirArg);
    return await readmeInstance.build();
  }

  public async buildDescription(projectDirArg: string) {
    const descriptionInstance = new aiDocsClasses.Description(this, projectDirArg);
    return await descriptionInstance.build();
  }

  public async buildNextCommitObject(projectDirArg: string) {
    const commitInstance = new aiDocsClasses.Commit(this, projectDirArg);
    return await commitInstance.buildNextCommitObject();
  }

  public async getProjectContext(projectDirArg: string) {
    const projectContextInstance = new aiDocsClasses.ProjectContext(projectDirArg);
    return await projectContextInstance.gatherFiles();
  }
  
  /**
   * Get the context with token count information
   * @param projectDirArg The path to the project directory
   * @returns An object containing the context string and its token count
   */
  public async getProjectContextWithTokenCount(projectDirArg: string) {
    const projectContextInstance = new aiDocsClasses.ProjectContext(projectDirArg);
    await projectContextInstance.update();
    return projectContextInstance.getContextWithTokenCount();
  }
  
  /**
   * Get just the token count for a project's context
   * @param projectDirArg The path to the project directory
   * @returns The number of tokens in the project context
   */
  public async getProjectContextTokenCount(projectDirArg: string) {
    const projectContextInstance = new aiDocsClasses.ProjectContext(projectDirArg);
    await projectContextInstance.update();
    return projectContextInstance.getTokenCount();
  }
  
  /**
   * Estimate token count in a text string
   * @param text The text to estimate tokens for
   * @returns Estimated number of tokens
   */
  public countTokens(text: string): number {
    const projectContextInstance = new aiDocsClasses.ProjectContext('');
    return projectContextInstance.countTokens(text);
  }
}