/**
 * Tests for the workflow YAML-subset parser, including the folded multi-line
 * directive support.
 */
import { describe, expect, test } from "bun:test";
import { parseWorkflowScript } from "./script.ts";

describe("parseWorkflowScript", () => {
  test("parses a flat single-line workflow", () => {
    const script = parseWorkflowScript(`
name: my-workflow
phases:
  - name: research
    directive: "Explore the codebase for the auth module."
  - name: implement
    directive: "Implement the change."
`);
    expect(script.name).toBe("my-workflow");
    expect(script.phases.length).toBe(2);
    expect(script.phases[0]!.name).toBe("research");
    expect(script.phases[0]!.directive).toBe("Explore the codebase for the auth module.");
  });

  test("folds an indented multi-line directive into one string", () => {
    const script = parseWorkflowScript(`
name: audit
phases:
  - name: analyze
    directive: |
      Look at two things:
      first, how auth is wired;
      second, where secrets are stored.
`);
    expect(script.phases.length).toBe(1);
    const d = script.phases[0]!.directive;
    expect(d).toContain("Look at two things:");
    expect(d).toContain("second, where secrets are stored.");
    // Line breaks are preserved as folded content, not flattened.
    expect(d).toContain("\n");
  });

  test("an indented continuation does not swallow the next phase", () => {
    const script = parseWorkflowScript(`
phases:
  - name: a
    directive: first
      and more
  - name: b
    directive: second
`);
    expect(script.phases.length).toBe(2);
    expect(script.phases[0]!.directive).toContain("and more");
    expect(script.phases[1]!.name).toBe("b");
    expect(script.phases[1]!.directive).toBe("second");
  });

  test("empty or unparseable yaml yields no phases", () => {
    expect(parseWorkflowScript("").phases.length).toBe(0);
    expect(parseWorkflowScript("name: x\n").phases.length).toBe(0);
  });
});