/**
 * Bootstrap module — matches original rust/crates/runtime/src/bootstrap.rs exactly.
 *
 * Provides:
 * - BootstrapPhase enum (12 phases)
 * - BootstrapPlan with claw_default() and from_phases()
 */

// ─── BootstrapPhase ─────────────────────────────────────────────────────────
export enum BootstrapPhase {
  CliEntry = "CliEntry",
  FastPathVersion = "FastPathVersion",
  StartupProfiler = "StartupProfiler",
  SystemPromptFastPath = "SystemPromptFastPath",
  ChromeMcpFastPath = "ChromeMcpFastPath",
  DaemonWorkerFastPath = "DaemonWorkerFastPath",
  BridgeFastPath = "BridgeFastPath",
  DaemonFastPath = "DaemonFastPath",
  BackgroundSessionFastPath = "BackgroundSessionFastPath",
  TemplateFastPath = "TemplateFastPath",
  EnvironmentRunnerFastPath = "EnvironmentRunnerFastPath",
  MainRuntime = "MainRuntime",
}

// ─── BootstrapPlan ──────────────────────────────────────────────────────────
export class BootstrapPlan {
  private _phases: BootstrapPhase[];

  private constructor(phases: BootstrapPhase[]) {
    this._phases = phases;
  }

  /**
   * Matches original BootstrapPlan::claw_default() — the standard 12-phase
   * bootstrap sequence used by the claw CLI.
   */
  static clawDefault(): BootstrapPlan {
    return BootstrapPlan.fromPhases([
      BootstrapPhase.CliEntry,
      BootstrapPhase.FastPathVersion,
      BootstrapPhase.StartupProfiler,
      BootstrapPhase.SystemPromptFastPath,
      BootstrapPhase.ChromeMcpFastPath,
      BootstrapPhase.DaemonWorkerFastPath,
      BootstrapPhase.BridgeFastPath,
      BootstrapPhase.DaemonFastPath,
      BootstrapPhase.BackgroundSessionFastPath,
      BootstrapPhase.TemplateFastPath,
      BootstrapPhase.EnvironmentRunnerFastPath,
      BootstrapPhase.MainRuntime,
    ]);
  }

  /**
   * Matches original BootstrapPlan::from_phases() — deduplicates phases
   * while preserving order.
   */
  static fromPhases(phases: BootstrapPhase[]): BootstrapPlan {
    const deduped: BootstrapPhase[] = [];
    for (const phase of phases) {
      if (!deduped.includes(phase)) {
        deduped.push(phase);
      }
    }
    return new BootstrapPlan(deduped);
  }

  phases(): BootstrapPhase[] {
    return [...this._phases];
  }
}