#!/usr/bin/env node

/**
 * Main entry file for itemize
 * @module
 */

// COPY OF SERVER-RESOLVE file
//
const replacers = {
  "@onzag/itemize-text-engine": "@onzag/itemize-text-engine/nodejs",
  "@onzag/itemize": "@onzag/itemize/nodejs",
};

const replacersKeys = Object.keys(replacers);

const Module = require("module");
const originalResolveFilename = Module._resolveFilename;
Module._resolveFilename = function (request: string, _parent: any) {
  for (let key of replacersKeys) {
    if (request.startsWith(key)) {
      const replaced = request.replace(key, replacers[key]);
      const modifiedArguments = [replaced, ...[].slice.call(arguments, 1)];
      return originalResolveFilename.apply(this, modifiedArguments);  
    }
  }
  return originalResolveFilename.apply(this, arguments);
};
//

import setup from "./setup";
import { start, stop } from "./dev-environment";
import colors from "colors";
import buildData from "./builder";
import buildDatabase from "./dbbuilder";
import getDeployable from "./getdeployable";
import runConTest from "./general/connection-test";

// the action we are asked to execute is the thrird argument 0 is node, 1 is itemize
const action = process.argv[2];
// if this argument is help for the specific process
const wantsSpecificHelp = process.argv[3] === "--help" || process.argv[3] === "help";
// the remaining args
const remainingArgs = process.argv.slice(3);

// now this is our action registry for the actions we want to execute
const actionRegistry: {
  [fn: string]: {
    fn: (...remainingArgs: string[]) => Promise<void>;
    description: string;
    usage: string;
    needsArgs: number;
    arbitraryArgs?: boolean;
  }
} = {
  "setup": {
    fn: setup,
    description: "run the initial setup, you can run this utility over again to re-setup",
    usage: "itemize setup (step)",
    needsArgs: 0,
    arbitraryArgs: true,
  },
  "get-deployable": {
    fn: getDeployable,
    description: "Provides a deployable for all clusters based on the config",
    usage: "itemize get-deployable [development|production]",
    needsArgs: 1,
  },
  "start-dev-environment": {
    fn: start,
    description: "Starts the development environment, as configured",
    usage: "itemize start-dev-environment [development|production] (with-kibana)",
    needsArgs: 1,
    arbitraryArgs: true,
  },
  "stop-dev-environment": {
    fn: stop,
    description: "Stops the development environment",
    usage: "itemize stop-dev-environment [development|production]",
    needsArgs: 1,
  },
  "build-data": {
    fn: buildData,
    description: "Processes the itemize resources and initializes a new build number",
    usage: "itemize build-data",
    needsArgs: 0,
  },
  "build-database": {
    fn: buildDatabase,
    description: "Builds the database (warning you must run build-data before this) " +
    "pass the argument development or production in order to specify which config to use " +
    "if using a development environment, remember to run start-development-environment",
    usage: "itemize build-database [development|production] (build|dump|load-dump)",
    needsArgs: 1,
    arbitraryArgs: true,
  },
  "connection-test": {
    fn: runConTest,
    description: "Runs a connection test to the databases specified by the configuration",
    usage: "itemize connection-test [development|production]",
    needsArgs: 1,
  },
};

// and we trigger these in an async function
(async () => {
  // so if our action is registered
  if (actionRegistry[action]) {
    // if we are tasked with getting specific help, or if the amount of args we need do not match
    if (
      wantsSpecificHelp ||
      (
        actionRegistry[action].needsArgs > remainingArgs.length &&
        actionRegistry[action].arbitraryArgs
      ) || (
        actionRegistry[action].needsArgs !== remainingArgs.length &&
        !actionRegistry[action].arbitraryArgs
      )
    ) {
      // we show the specific usage
      console.log(actionRegistry[action].description);
      console.log("usage: " + colors.yellow(actionRegistry[action].usage))
    } else {
      // otherwise we try to execute
      try {
        await actionRegistry[action].fn(...remainingArgs);
      } catch (err) {
        // if something failed during the process we show the error stack and exit with status 1
        console.log(colors.red(err.stack));
        process.exit(1);
      }
    }
  } else {
    // otherwise we just show the help information
    console.log(colors.green("Welcome to itemize build tool"));
    // we get into the action registry
    Object.keys(actionRegistry).forEach((action) => {
      // and explain each action
      console.log(colors.yellow(action) + "\n\t" + actionRegistry[action].description);
    });
  }
})();