import { BuilderContext, BuilderOutput, createBuilder } from "@angular-devkit/architect";
import { JsonObject } from "@angular-devkit/core";
import { OptionalKind, Project, PropertyAssignment, PropertyAssignmentStructure, ScriptTarget, ts } from "ts-morph";
import {
  getAnyValueFromProcess,
  getBooleanFromProcess,
  getNumberFromProcess,
  getStringFromProcess,
  NO_ENV_VAR_OR_VALUE_IN_PROCESS
} from "../utils/ast";
// import { ts } from "@ts-morph/common/lib/typescript";

interface Options extends JsonObject {
  environmentFile: string;
}

export default createBuilder<Options>(
  async (options: Options, context: BuilderContext): Promise<BuilderOutput> => {

    context.reportStatus(`Executing my command "${options.environmentFile}"...`);
    const project = new Project({
      compilerOptions: { target: ScriptTarget.Latest }
    });

    const sourceFile = project.addSourceFileAtPath("./" + options.environmentFile);
    // get the object literal
    const additionalDataProp = sourceFile
      .getVariableDeclarationOrThrow("environment")
      .getInitializerIfKindOrThrow(ts.SyntaxKind.ObjectLiteralExpression)
      .getPropertyOrThrow("envVar") as PropertyAssignment;
    const additionalDataObjLit = additionalDataProp
      .getInitializerIfKindOrThrow(ts.SyntaxKind.ObjectLiteralExpression);


    const LOST_OF_VARS: OptionalKind<PropertyAssignmentStructure>[] = [];

    additionalDataObjLit.getProperties()
      .forEach(c => {
        const propName = c.getSymbol()?.getName() as string;

        let toUpdate = false;
        if(c.getType().isBoolean()) {

          const _var = getBooleanFromProcess(propName);
          if(_var !== NO_ENV_VAR_OR_VALUE_IN_PROCESS) {
            toUpdate = true;
            LOST_OF_VARS.push(_var as OptionalKind<PropertyAssignmentStructure>);
          }
        } else if(c.getType().isNumber()) {

          const _var = getNumberFromProcess(propName);
          if(_var !== NO_ENV_VAR_OR_VALUE_IN_PROCESS) {
            toUpdate = true;
            LOST_OF_VARS.push(_var as OptionalKind<PropertyAssignmentStructure>);
          }
        } else if(c.getType().isString()) {

          const _var = getStringFromProcess(propName);
          if(_var !== NO_ENV_VAR_OR_VALUE_IN_PROCESS) {
            toUpdate = true;
            LOST_OF_VARS.push(_var as OptionalKind<PropertyAssignmentStructure>);
          }
        } else if(c.getType().isNull() || c.getType().isUndefined()) {

          const _var = getAnyValueFromProcess(propName);
          if(_var !== NO_ENV_VAR_OR_VALUE_IN_PROCESS) {
            toUpdate = true;
            LOST_OF_VARS.push(_var as OptionalKind<PropertyAssignmentStructure>);
          }
        }

        if(toUpdate) {
          c.remove();
        }

      });

    if(LOST_OF_VARS.length > 0) {
      additionalDataObjLit.addPropertyAssignments(LOST_OF_VARS)
    }

    sourceFile.saveSync();
    return { success: true };

  });