import { describe, expect, it } from "vitest";
import { chooseNextAutonomyWork, planParallelAutonomyWork } from "../src/services/autonomyScheduler.js";
import { parseRoadmapMarkdown } from "../src/repositories/autonomyRepository.js";

describe("smart autonomy scheduler", () => {
  it("chooses the independent item that unlocks the most downstream work", () => {
    const roadmap = parseRoadmapMarkdown("## Delivery\n- [ ] A\n- [ ] B\n- [ ] C\n- [ ] D");
    const [a, b, c, d] = roadmap.phases[0].items;
    c.dependsOn = [a.id];
    d.dependsOn = [a.id];
    b.priority = 80;
    const selected = chooseNextAutonomyWork(roadmap.phases, 0);
    expect(selected?.item.id).toBe(a.id);
    expect(selected?.downstreamCount).toBe(2);
  });

  it("does not group likely path-conflicting work in parallel", () => {
    const roadmap = parseRoadmapMarkdown("## Delivery\n- [ ] A\n- [ ] B\n- [ ] C");
    const [a, b, c] = roadmap.phases[0].items;
    a.touchedPaths = ["src/shared/project.ts"];
    b.touchedPaths = ["src/shared/project.ts"];
    c.touchedPaths = ["src/other.ts"];
    const candidates = chooseNextAutonomyWork(roadmap.phases, 0);
    expect(candidates?.item).toBeTruthy();
    const all = roadmap.phases[0].items.map((item) => ({ item, phase: roadmap.phases[0], phaseIndex: 0, score: 1, downstreamCount: 0, conflictKeys: (item.touchedPaths ?? []).map((path) => `path:${path}`) }));
    const groups = planParallelAutonomyWork(all);
    expect(groups.some((group) => group.includes(a.id) && group.includes(b.id))).toBe(false);
  });

  it("can deliberately favor downstream impact when a command changes scheduling policy", () => {
    const roadmap = parseRoadmapMarkdown("## Delivery\n- [ ] A\n- [ ] B\n- [ ] C\n- [ ] D");
    const [a, b, c, d] = roadmap.phases[0].items;
    c.dependsOn = [a.id];
    d.dependsOn = [a.id];
    b.priority = 100;
    expect(chooseNextAutonomyWork(roadmap.phases, 0, "downstream-impact")?.item.id).toBe(a.id);
  });

  it("does not claim work while its external dependency is unavailable", () => {
    const roadmap = parseRoadmapMarkdown("## Delivery\n- [ ] A\n- [ ] B");
    roadmap.phases[0].items[0].waitingExternal = true;
    expect(chooseNextAutonomyWork(roadmap.phases, 0)?.item.id).toBe(roadmap.phases[0].items[1].id);
  });
});