import { apply, chain, mergeWith, move, renameTemplateFiles, Rule, SchematicContext, template, Tree, url } from "@angular-devkit/schematics";
import path from "path";
import { getPrjSrd } from "../router.gen";
import { removeBlankLines } from "./remove-blank-lines";
export abstract class Generator {
    abstract get outDir(): string;    
    filesDir: string
    src = 'src';
    urlComp = `../../../../`;

    constructor(filesDir: string) { 
        this.filesDir = path.dirname(filesDir);
    }
    
    public gen(_options: any): Rule {
        return (tree: Tree, _context: SchematicContext) => {   
            const rule = chain([
                  this._gen(_options),
                  removeBlankLines()
                ]);
                
            return rule(tree, _context);
          };
    }

    private _gen(_options: any): Rule {
        return (tree: Tree, _context: SchematicContext) => {  
            const appSource = apply(url(`${this.urlComp}${this.src + this.filesDir.split('js')[1].replace(/\\/g, '/')}/files`), 
                [ 
                    renameTemplateFiles(), 
                    template({..._options, ...getPrjSrd()}), 
                    move(tree.getDir(this.outDir).path),
                ]);        
            return mergeWith(appSource);
        };
      }
}

export class BackEndGenerator extends Generator {
    override get outDir() { return `ywtc-output/${getPrjSrd().prjNDashd}-backend`;}
}

export class FrontEndGenerator extends Generator {
    override get outDir() { return `ywtc-output/${getPrjSrd().prjNDashd}-frontend`;}
}

export class E2EGenerator extends FrontEndGenerator {
    override get outDir() { return `ywtc-output/${getPrjSrd().prjNDashd}-frontend`;}
    override urlComp = `../../../../../`;
}