import { describe, expect, it } from "vitest";
import seedWorkPackages from "../agentic_pm_demo_codex_plans/data/work-packages.seed.json";
import { runMockAgent } from "./mock-agent";
import { hydrateWorkPackages } from "./work-package-specs";
import type { ChatMessage, WorkPackage } from "./work-package-types";
import { SIMULATED_EXECUTION_DISCLAIMER } from "./work-package-types";

const productIdea =
  "I want to build an IoT product for production-line tightening quality monitoring.";

const hydrated = hydrateWorkPackages(
  seedWorkPackages as WorkPackage[],
  productIdea,
);

function userMessage(content: string): ChatMessage {
  return {
    id: "m-1",
    role: "user",
    content,
    createdAt: new Date().toISOString(),
  };
}

describe("runMockAgent", () => {
  it("hydrates the board from a free-form product idea", () => {
    const response = runMockAgent({
      messages: [userMessage(productIdea)],
      workPackages: seedWorkPackages as WorkPackage[],
      parsedCommand: { instruction: productIdea },
    });

    expect(response.boardAction?.type).toBe("replace_all");
    const replacement = response.boardAction?.fields?.replacementWorkPackages as
      | WorkPackage[]
      | undefined;
    expect(replacement?.length).toBe(hydrated.length);
    expect(replacement?.[0]?.inputFiles[0]).toContain("Product brief:");
  });

  it("creates spec-driven execute outputs for every work package", () => {
    for (const wp of hydrated) {
      const response = runMockAgent({
        messages: [userMessage(productIdea)],
        workPackages: hydrated,
        selectedWorkPackageId: wp.id,
        parsedCommand: {
          referencedPackageName: wp.title,
          mode: "execute",
          instruction: `Generate the expected outputs for ${wp.shortName}.`,
        },
      });

      expect(response.boardAction?.type).toBe("update");
      const fields = response.boardAction?.fields;
      const outputs = (fields?.outputs as WorkPackage["outputs"] | undefined) ?? [];
      expect(outputs.length).toBeGreaterThan(0);
      const latest = outputs[outputs.length - 1];
      expect(latest.disclaimer).toBe(SIMULATED_EXECUTION_DISCLAIMER);
      for (const expectedOutput of wp.outputFiles) {
        expect(latest.content).toContain(expectedOutput);
      }
    }
  });

  it("returns package-aware guidance for ask", () => {
    const wp = hydrated.find((item) => item.id === "wp-test-management");
    expect(wp).toBeTruthy();

    const response = runMockAgent({
      messages: [userMessage(productIdea)],
      workPackages: hydrated,
      selectedWorkPackageId: wp?.id,
      parsedCommand: {
        referencedPackageName: wp?.title,
        mode: "ask",
        instruction: "How should we verify reliability?",
      },
    });

    expect(response.assistantMessage).toContain("traceability");
    expect(response.assistantMessage).toContain("reliability");
    expect(response.assistantMessage).not.toContain("Package:");
    expect(response.assistantMessage).not.toContain("Phase:");
    expect(response.boardAction?.type).toBe("none");
  });

  it("preserves the existing product brief when asking about a package detail", () => {
    const wp = hydrated.find((item) => item.id === "wp-srs");
    expect(wp).toBeTruthy();

    const response = runMockAgent({
      messages: [userMessage("What does verification method mean in this package?")],
      workPackages: hydrated,
      selectedWorkPackageId: wp?.id,
      parsedCommand: {
        referencedPackageName: wp?.title,
        mode: "ask",
        instruction: "What does verification method mean in this package?",
      },
    });

    expect(response.assistantMessage).toContain(productIdea);
    expect(response.assistantMessage).not.toContain(
      "Product brief: What does verification method mean in this package?",
    );
  });

  it("does not turn a package question into the product brief when no product brief exists yet", () => {
    const unhydrated = seedWorkPackages as WorkPackage[];
    const wp = unhydrated.find((item) => item.id === "wp-srs");
    expect(wp).toBeTruthy();

    const response = runMockAgent({
      messages: [userMessage("Explain this objective in simpler words.")],
      workPackages: unhydrated,
      selectedWorkPackageId: wp?.id,
      parsedCommand: {
        referencedPackageName: wp?.title,
        mode: "ask",
        instruction: "Explain this objective in simpler words.",
      },
    });

    expect(response.assistantMessage).not.toContain(
      "Product brief: Explain this objective in simpler words.",
    );
    expect(response.assistantMessage).not.toContain(
      "Product context: Explain this objective in simpler words.",
    );
  });
});