#!/usr/bin/env -S deno run --allow-read --allow-write --allow-env

import { Command } from "@cliffy/command";
import { colors } from "@cliffy/ansi/colors";
import {
  clearScreen,
  printBanner,
  showMainMenu,
  selectGameMode,
  configureGame,
  playRound,
  showGameResults,
  showStats,
  showReference,
  confirmAction,
} from "./ui.ts";
import { createGameSession, isGameComplete } from "./game.ts";
import { loadStats, updateStats, resetStats, getAccuracy } from "./stats.ts";
import type { GameResult } from "./stats.ts";

/**
 * Main application class
 */
class MorseGame {
  /**
   * Run the interactive menu
   */
  async runInteractive(): Promise<void> {
    while (true) {
      clearScreen();
      printBanner();

      const action = await showMainMenu();

      switch (action) {
        case "play":
          await this.playGame();
          break;
        case "stats":
          await this.viewStats();
          break;
        case "reference":
          await this.showReference();
          break;
        case "reset":
          await this.resetStats();
          break;
        case "exit":
          console.log(colors.cyan("\nThanks for playing! 73 (Best regards in morse)\n"));
          return;
      }
    }
  }

  /**
   * Play a game
   */
  async playGame(): Promise<void> {
    const mode = await selectGameMode();
    const config = await configureGame(mode);

    const session = createGameSession({
      mode,
      rounds: config.rounds,
      timePerRound: config.timePerRound,
    });

    // Play all rounds
    for (let i = 0; i < config.rounds; i++) {
      await playRound(session, i + 1);

      if (isGameComplete(session)) {
        break;
      }
    }

    // Show results
    showGameResults(session);

    // Update stats
    const summary = session.results.reduce(
      (acc, result) => ({
        correct: acc.correct + (result.correct ? 1 : 0),
        incorrect: acc.incorrect + (result.correct ? 0 : 1),
        totalTime: acc.totalTime + result.timeSpent,
      }),
      { correct: 0, incorrect: 0, totalTime: 0 }
    );

    const gameResult: GameResult = {
      mode,
      rounds: session.results.length,
      correct: summary.correct,
      incorrect: summary.incorrect,
      averageTime: summary.totalTime / session.results.length / 1000,
      streak: session.bestStreak,
    };

    await updateStats(gameResult);

    // Wait for user to continue
    console.log(colors.gray("\nPress Enter to continue..."));
    await new Promise((resolve) => {
      const buf = new Uint8Array(1);
      Deno.stdin.setRaw(true);
      Deno.stdin.read(buf).then(() => {
        Deno.stdin.setRaw(false);
        resolve(undefined);
      });
    });
  }

  /**
   * View statistics
   */
  async viewStats(): Promise<void> {
    const stats = await loadStats();
    showStats(stats);

    // Wait for user to continue
    console.log(colors.gray("Press Enter to continue..."));
    await new Promise((resolve) => {
      const buf = new Uint8Array(1);
      Deno.stdin.setRaw(true);
      Deno.stdin.read(buf).then(() => {
        Deno.stdin.setRaw(false);
        resolve(undefined);
      });
    });
  }

  /**
   * Show reference
   */
  async showReference(): Promise<void> {
    showReference();

    // Wait for user to continue
    console.log(colors.gray("Press Enter to continue..."));
    await new Promise((resolve) => {
      const buf = new Uint8Array(1);
      Deno.stdin.setRaw(true);
      Deno.stdin.read(buf).then(() => {
        Deno.stdin.setRaw(false);
        resolve(undefined);
      });
    });
  }

  /**
   * Reset statistics
   */
  async resetStats(): Promise<void> {
    const confirmed = await confirmAction(
      "Are you sure you want to reset all statistics? This cannot be undone."
    );

    if (confirmed) {
      await resetStats();
      console.log(colors.green("\n✓ Statistics have been reset.\n"));
      await new Promise((resolve) => setTimeout(resolve, 1500));
    }
  }

  /**
   * Quick play with CLI arguments
   */
  async quickPlay(mode: string, rounds: number, time: number): Promise<void> {
    const validModes = ["letters", "numbers", "words", "phrases"];
    if (!validModes.includes(mode)) {
      console.error(colors.red(`Invalid mode: ${mode}`));
      console.log(`Valid modes: ${validModes.join(", ")}`);
      Deno.exit(1);
    }

    clearScreen();
    printBanner();

    const session = createGameSession({
      mode: mode as any,
      rounds,
      timePerRound: time,
    });

    // Play all rounds
    for (let i = 0; i < rounds; i++) {
      await playRound(session, i + 1);
    }

    // Show results
    showGameResults(session);

    // Update stats
    const summary = session.results.reduce(
      (acc, result) => ({
        correct: acc.correct + (result.correct ? 1 : 0),
        incorrect: acc.incorrect + (result.correct ? 0 : 1),
        totalTime: acc.totalTime + result.timeSpent,
      }),
      { correct: 0, incorrect: 0, totalTime: 0 }
    );

    const gameResult: GameResult = {
      mode: mode as any,
      rounds: session.results.length,
      correct: summary.correct,
      incorrect: summary.incorrect,
      averageTime: summary.totalTime / session.results.length / 1000,
      streak: session.bestStreak,
    };

    await updateStats(gameResult);
  }

  /**
   * Show quick stats
   */
  async showQuickStats(): Promise<void> {
    const stats = await loadStats();

    if (stats.totalGames === 0) {
      console.log(colors.yellow("No games played yet!"));
      return;
    }

    console.log(colors.bold.cyan("\n📈 QUICK STATS\n"));
    console.log(`Games Played: ${colors.bold(stats.totalGames.toString())}`);
    console.log(`Total Rounds: ${colors.bold(stats.totalRounds.toString())}`);
    console.log(`Accuracy: ${colors.bold(getAccuracy(stats).toFixed(1) + "%")}`);
    console.log(`Best Streak: ${colors.bold(stats.bestStreak.toString())}`);
    console.log();
  }
}

// CLI Setup
const app = new MorseGame();

await new Command()
  .name("morse-game")
  .version("1.0.0")
  .description("A terminal-based morse code practice game")
  .action(async () => {
    // Default action: run interactive mode
    await app.runInteractive();
  })
  .command("play", "Start a quick game with specified settings")
  .option("-m, --mode <mode:string>", "Game mode (letters, numbers, words, phrases)", {
    default: "letters",
  })
  .option("-r, --rounds <rounds:number>", "Number of rounds", { default: 10 })
  .option("-t, --time <seconds:number>", "Seconds per round", { default: 30 })
  .action(async (options) => {
    await app.quickPlay(options.mode, options.rounds, options.time);
  })
  .command("stats", "Display your statistics")
  .action(async () => {
    await app.showQuickStats();
  })
  .command("reset", "Reset all statistics")
  .action(async () => {
    const confirmed = await confirmAction(
      "Are you sure you want to reset all statistics? This cannot be undone."
    );

    if (confirmed) {
      await resetStats();
      console.log(colors.green("\n✓ Statistics have been reset.\n"));
    } else {
      console.log(colors.yellow("\nCancelled.\n"));
    }
  })
  .command("reference", "Show morse code reference")
  .action(() => {
    showReference();
  })
  .parse(Deno.args);