import { cyan, green, red, yellow, bold, dim, gray } from "@std/fmt/colors";

export enum LogLevel {
  DEBUG = 0,
  INFO = 1,
  WARN = 2,
  ERROR = 3,
}

class Logger {
  private level: LogLevel = LogLevel.INFO;
  private verbose = false;

  setVerbose(verbose: boolean) {
    this.verbose = verbose;
    if (verbose) {
      this.level = LogLevel.DEBUG;
    }
  }

  debug(message: string, ...args: unknown[]) {
    if (this.level <= LogLevel.DEBUG) {
      console.log(dim("  debug"), message, ...args);
    }
  }

  info(message: string, ...args: unknown[]) {
    if (this.level <= LogLevel.INFO) {
      console.log("• ", message, ...args);
    }
  }

  warn(message: string, ...args: unknown[]) {
    if (this.level <= LogLevel.WARN) {
      console.warn(yellow("!"), message, ...args);
    }
  }

  error(message: string, ...args: unknown[]) {
    if (this.level <= LogLevel.ERROR) {
      console.error(red("✗"), message, ...args);
    }
  }

  success(message: string, ...args: unknown[]) {
    console.log(green("✓"), message, ...args);
  }

  step(message: string, ...args: unknown[]) {
    console.log(cyan("→"), message, ...args);
  }

  progress(message: string, current: number, total: number) {
    const percentage = Math.round((current / total) * 100);
    const filled = Math.floor(percentage / 4);
    const bar = "█".repeat(filled) + gray("░".repeat(25 - filled));
    Deno.stdout.writeSync(new TextEncoder().encode(`\r  ${cyan("→")} ${message} ${bar} ${current}/${total}`));
    if (current === total) {
      console.log();
    }
  }

  section(title: string) {
    console.log();
    console.log(bold(title));
  }

  result(message: string, value?: string) {
    if (value) {
      console.log(`  ${message} ${dim(value)}`);
    } else {
      console.log(`  ${message}`);
    }
  }

  list(items: string[]) {
    items.forEach(item => {
      console.log(`• ${item}`);
    });
  }

  table(headers: string[], rows: string[][]) {
    console.log(`  ${headers.join("  ")}`);
    console.log(`  ${headers.map(h => "─".repeat(h.length)).join("  ")}`);
    rows.forEach(row => {
      console.log(`  ${row.join("  ")}`);
    });
  }
}

export const logger = new Logger();