/**
 * Centralized console output for tsbuild.
 *
 * Visual hierarchy (4 levels):
 *   HEADER  — top-level section start (emoji + bold text + separator line)
 *   STEP    — major action within a section (emoji + text, no indent)
 *   DETAIL  — supplementary info under a step (3-space indent + emoji + text)
 *   SUCCESS/ERROR/WARN — outcome indicators (emoji + text, no indent)
 */
export class TsBuildLogger {
  static readonly c = {
    reset: '\x1b[0m',
    bold: '\x1b[1m',
    dim: '\x1b[2m',
    red: '\x1b[31m',
    green: '\x1b[32m',
    yellow: '\x1b[33m',
    cyan: '\x1b[36m',
    white: '\x1b[37m',
    brightRed: '\x1b[91m',
    brightGreen: '\x1b[92m',
    brightYellow: '\x1b[93m',
  };

  static readonly SEPARATOR_WIDTH = 70;

  static separator(char = '─'): string {
    return char.repeat(this.SEPARATOR_WIDTH);
  }

  /** Level 1: Section header. Blank line before, separator after. */
  static header(emoji: string, text: string): void {
    console.log('');
    console.log(`${emoji} ${this.c.bold}${text}${this.c.reset}`);
    console.log(this.c.dim + this.separator() + this.c.reset);
  }

  /** Level 2: Step within a section. No indent. */
  static step(emoji: string, text: string): void {
    console.log(`${emoji} ${text}`);
  }

  /** Level 3: Detail under a step. 3-space indent. */
  static detail(emoji: string, text: string): void {
    console.log(`   ${emoji} ${text}`);
  }

  /** Outcome: success */
  static success(text: string): void {
    console.log(`${this.c.green}✅ ${text}${this.c.reset}`);
  }

  /** Outcome: error (goes to stderr) */
  static error(text: string): void {
    console.error(`${this.c.red}❌ ${text}${this.c.reset}`);
  }

  /** Outcome: warning */
  static warn(text: string): void {
    console.log(`${this.c.yellow}⚠️  ${text}${this.c.reset}`);
  }

  /** Plain indented line (for code snippets, list items, etc.) */
  static indent(text: string, level = 1): void {
    console.log('   '.repeat(level) + text);
  }

  /** Blank line */
  static blank(): void {
    console.log('');
  }
}