import {
  copyTemplateFiles,
  createProjectDirectory,
  installPackages,
  createFirstGitCommit,
  prettierFormat,
} from "./tasks";
import type { Options } from "./types";
import { renderOutroMessage } from "./utils/render-outro-message";
import chalk from "chalk";
import Listr from "listr";
import path from "path";
import { getContractName } from "./utils/getContractName";
import { fileURLToPath } from "url";
import { parse, stringify } from "envfile";
import * as fs from "fs";

export async function createProject(options: Options) {
  console.log(`\n`);

  const currentFileUrl = import.meta.url;

  const templateDirectory = path.resolve(
    decodeURI(fileURLToPath(currentFileUrl)),
    "../../templates"
  );

  const targetDirectory = path.resolve(process.cwd(), options.project);

  const envFilePath = path.join(targetDirectory, "packages", "hardhat", ".env");

  const tasks = new Listr([
    {
      title: `📁 Create project directory ${targetDirectory}`,
      task: () => createProjectDirectory(options.project),
    },
    {
      title: `🧪 Creating a new Xchange project in ${chalk.green.bold(
        options.project
      )}`,
      task: () =>
        copyTemplateFiles(options, templateDirectory, targetDirectory),
    },
    {
      title: "📝 Writing options to .env file",
      task: () => {
        const existingEnvConfig = fs.existsSync(envFilePath)
          ? parse(fs.readFileSync(envFilePath, "utf8"))
          : {};

        const newEnvConfig = {
          ...existingEnvConfig,
          TOKEN_NAME: options.project,
          TOKEN_SYMBOL: options.ticker,
          TOKEN_SUPPLY: options.supply.toString(),
          TOKEN_SUPPLY_PAIRED: options.supply,
          DEPLOYER_PRIVATE_KEY: "",
          CONTRACT_NAME: getContractName(options.contractType),
          LOAN_TERM_CONTRACT_ADDRESS: "0xd95f799276A8373F7F234A7F211DE9E3a0ae6639",
          LOAN_AMOUNT: 0.5,
          INITIAL_PAYMENT_DUE: 0.11
        };

        fs.writeFileSync(envFilePath, stringify(newEnvConfig));
        
        // Rename the contract file to the TOKEN_NAME in the new project directory
        const contractFilePath = path.join(
          targetDirectory,
          "packages",
          "hardhat",
          "contracts",
          `${getContractName(options.contractType)}.sol`
        );
        const newContractFilePath = path.join(
          path.dirname(contractFilePath),
          `${options.project}.sol`
        );

        // Read the contents of the contract file
        const contractContent = fs.readFileSync(contractFilePath, "utf8");

        // Replace the contract name in the file contents
        const updatedContractContent = contractContent.replace(
          new RegExp(`contract ${getContractName(options.contractType)}`, "g"),
          `contract ${options.project}`
        );

        // Write the updated contents to the new contract file
        fs.writeFileSync(newContractFilePath, updatedContractContent);

        // Remove the original contract file
        fs.unlinkSync(contractFilePath);

        // Update the CONTRACT_NAMES export in the new project directory
        const constantsFilePath = path.join(
          targetDirectory,
          "packages",
          "hardhat",
          "utils",
          "constants.ts"
        );
        const constantsContent = fs.readFileSync(constantsFilePath, "utf8");
        const updatedConstantsContent = constantsContent.replace(
          /export const CONTRACT_NAMES = {[^}]*}/,
          `export const CONTRACT_NAMES = {
            StandardToken: "StandardToken",
            DeflationaryToken: "DeflationaryToken",
            MockERC20: "MockERC20",
            ${options.project}: "${options.project}",
          };`
        );
        fs.writeFileSync(constantsFilePath, updatedConstantsContent);
      },
    },
    {
      title: `📦 Installing dependencies with pnpm, this could take a while`,
      task: () => installPackages(targetDirectory),
      skip: () => {
        if (!options.install) {
          return "Manually skipped";
        }
      },
    },
    {
      title: `🪄${"  "}Formatting files with prettier`,
      task: () => prettierFormat(targetDirectory),
      skip: () => {
        if (!options.install) {
          return "Skipping because prettier install was skipped";
        }
      },
    },
    {
      title: `📡${" "}Initializing Git repository ${
        options.extensions?.includes("foundry") ? "and submodules" : ""
      }`,
      task: () => createFirstGitCommit(targetDirectory, options),
    },
  ]);

  try {
    await tasks.run();
    renderOutroMessage(options);
  } catch (error) {
    console.log("%s Error occurred", chalk.red.bold("ERROR"), error);
    console.log("%s Exiting...", chalk.red.bold("Uh oh! 😕 Sorry about that!"));
  }
}