import assert from "node:assert/strict";
import test from "node:test";
import type { ExtensionAPI, ExtensionContext } from "@earendil-works/pi-coding-agent";
import { visibleWidth } from "@earendil-works/pi-tui";
import { DEFAULT_WORKFLOW_CONFIG, type WorkflowRun } from "./domain.ts";
import {
  projectWorkflowProgress,
  refreshWorkflowProgress,
  registerWorkflowProgress,
  renderWorkflowProgress,
} from "./progress.ts";

function run(overrides: Partial<WorkflowRun> = {}): WorkflowRun {
  return {
    runId: "run-1",
    revision: 3,
    mode: "feature",
    status: "waiting",
    background: false,
    request: "Build dashboard",
    featureName: "dashboard",
    parentSessionIds: ["session-1"],
    lease: {
      processId: 1,
      activeParentSessionId: "session-1",
      heartbeatAt: 10,
    },
    workspace: { state: "ready", sourceRoot: "/repo" },
    effectiveConfig: structuredClone(DEFAULT_WORKFLOW_CONFIG),
    pinnedProfiles: [],
    preflightEligibility: [],
    facts: {
      stage: "design",
      taskKind: "feature",
      requestTerms: [],
      candidatePaths: [],
      languages: [],
      tags: [],
      riskTags: [],
    },
    stages: [
      { id: "d", kind: "discover", status: "completed" },
      { id: "p", kind: "design", status: "waiting" },
      { id: "pt", kind: "prototype", status: "pending" },
      { id: "i", kind: "implement", status: "pending" },
      { id: "v", kind: "verify", status: "pending" },
      { id: "r", kind: "review", status: "pending" },
    ],
    gates: [
      {
        id: "gate",
        kind: "plan-approval",
        status: "open",
        revision: 3,
        openedAt: 12,
      },
    ],
    decisions: [],
    assignments: [],
    prototypeCandidates: [],
    prototypeCleanupCompleted: false,
    deliveries: [],
    commandReceipts: [],
    uiImpactEvidence: [],
    affectedUiSurfaces: [],
    mutatorProfileNames: [],
    reviewCycles: 0,
    verificationCycles: 0,
    ...overrides,
  };
}

test("progress projects the newest attached active run", () => {
  const older = run({ runId: "older", featureName: "older", lease: { processId: 1, activeParentSessionId: "session-1", heartbeatAt: 5 } });
  const newest = run({ runId: "newest", featureName: "newest", lease: { processId: 1, activeParentSessionId: "session-1", heartbeatAt: 20 } });
  const terminal = run({ runId: "terminal", status: "completed", lease: undefined });
  const historical = run({ runId: "historical", parentSessionIds: ["session-2"] });
  const progress = projectWorkflowProgress([older, terminal, newest, historical], "session-1");
  assert.deepEqual(progress, {
    runId: "newest",
    label: "newest",
    stage: "DESIGN",
    completed: 1,
    total: 6,
    gate: "Plan Approval",
  });
});

test("progress clears when no attached run remains active", () => {
  assert.equal(
    projectWorkflowProgress([run({ status: "failed", lease: undefined })], "session-1"),
    undefined,
  );
  assert.equal(projectWorkflowProgress([run()], "session-2"), undefined);
});

test("progress lifecycle refreshes from persistence and clears on terminal state and shutdown", async () => {
  let runs = [run()];
  let widget: unknown;
  const handlers = new Map<string, (event: unknown, ctx: ExtensionContext) => Promise<void>>();
  const pi = {
    on(event: string, handler: (event: unknown, ctx: ExtensionContext) => Promise<void>) {
      handlers.set(event, handler);
    },
  } as unknown as ExtensionAPI;
  const runtime = {
    store: { listRuns: async () => runs },
  } as never;
  const ctx = {
    mode: "tui",
    sessionManager: { getSessionId: () => "session-1" },
    ui: {
      setWidget(key: string, value: unknown) {
        assert.equal(key, "workflow-active-run");
        widget = value;
      },
    },
  } as unknown as ExtensionContext;
  registerWorkflowProgress(pi, runtime);
  await handlers.get("session_start")?.({}, ctx);
  assert.equal(typeof widget, "function");

  runs = [run({ status: "completed", lease: undefined })];
  await refreshWorkflowProgress(runtime, ctx);
  assert.equal(widget, undefined);

  runs = [run()];
  await refreshWorkflowProgress(runtime, ctx);
  assert.equal(typeof widget, "function");
  await handlers.get("session_shutdown")?.({}, ctx);
  assert.equal(widget, undefined);
});

test("progress rendering is one cell-width-safe line", () => {
  const progress = projectWorkflowProgress([run()], "session-1");
  assert.ok(progress);
  const wide = renderWorkflowProgress(progress, 80);
  assert.match(wide, /workflow  dashboard  DESIGN  1\/6  Gate: Plan Approval/);
  const narrow = renderWorkflowProgress(progress, 28);
  assert.ok(visibleWidth(narrow) <= 28);
  assert.equal(narrow.includes("\n"), false);
});