import type { AiDoc } from '../classes.aidoc.js';
import * as plugins from '../plugins.js';
import { ProjectContext } from './projectcontext.js';

export class Readme {

  // INSTANCE
  private aiDocsRef: AiDoc;
  private projectDir: string;

  constructor(aiDocsRef: AiDoc, projectDirArg: string) {
    this.aiDocsRef = aiDocsRef;
    this.projectDir = projectDirArg;
  }

  public async build() {
    let finalReadmeString = ``;

    // we can now assemble the directory structure.
    const projectContext = new ProjectContext(this.projectDir);
    const contextString = await projectContext.update();

    // lets first check legal before introducung any cost
    const npmExtraJson = JSON.parse(((await projectContext.gatherFiles()).smartfilesNpmextraJSON).contents.toString());
    const legalInfo = npmExtraJson?.tsdoc?.legal
    if (!legalInfo) {
      const error = new Error(`No legal information found in npmextra.json`);
      console.log(error);
    }

    let result = await this.aiDocsRef.openaiInstance.chat(
      `
You create markdown readmes for npm projects. You only output the markdown readme.

The Readme should follow the following template:

# Project Name
[
  The name is the module name of package.json
  The description is in the description field of package.json
]

## Install
[
  Write a short text on how to install the project
]

## Usage
[ 
  Give code examples here.
  Construct sensible scenarios for the user.
  Make sure to show a complete set of features of the module.
  Don't omit use cases.
  It does not matter how much time you need.
  ALWAYS USE ESM SYNTAX AND TYPESCRIPT.
  DON'T CHICKEN OUT. Write at least 4000 words. More if necessary.
  If there is already a readme, take the Usage section as base. Remove outdated content, and expand and improve upon the valid parts.
  Super important: Check for completenes.
  Don't include any licensing information. This will be added in a later step.
  Avoid "in conclusions".

  Good to know:
  * npmextra.json contains overall module information.
  * readme.hints.md provides valuable hints about module ideas.
]
      `,
      contextString,
      []
    );
    

    finalReadmeString += result.message.content + '\n' + legalInfo;

    

    console.log(`\n======================\n`);
    console.log(result.message.content);
    console.log(`\n======================\n`);

    const readme = (await projectContext.gatherFiles()).smartfilesReadme;
    readme.contents = Buffer.from(finalReadmeString);
    await readme.write();

    return result.message.content;
  }
}