import { describe, expect, it } from "vitest";
import {
  DEFAULT_PACK_SUBDIR,
  dialogDefaultsFromProject,
  packHints,
  projectYamlFromPack,
  resolvePackRequest,
} from "../src/pack-options.js";

describe("dialogDefaultsFromProject", () => {
  it("pre-fills the dialog from project.yaml pack fields", () => {
    const options = dialogDefaultsFromProject(
      { name: "My Farm", icon: "icon.png", pack: { name: "Pinefield Valley", installer: true, mods: true, splitAssets: true } },
      "/proj",
      "fallback",
    );
    expect(options.name).toBe("Pinefield Valley");
    expect(options.icon).toBe("icon.png");
    expect(options.desktop).toBe(true);
    expect(options.installer).toBe(true);
    expect(options.mods).toBe(true);
    expect(options.splitAssets).toBe(true);
    expect(options.outDir).toBe(`/proj/${DEFAULT_PACK_SUBDIR}`);
  });

  it("falls back to the top-level name then the project display name with defaults", () => {
    expect(dialogDefaultsFromProject({ name: "My Farm" }, "/proj", "fallback").name).toBe("My Farm");
    const none = dialogDefaultsFromProject(null, "/proj", "fallback");
    expect(none.name).toBe("fallback");
    expect(none.icon).toBe("");
    expect(none.desktop).toBe(false);
    expect(none.installer).toBe(false);
    expect(none.mods).toBe(false);
    expect(none.splitAssets).toBe(false);
  });

  it("defaults desktop from pack.installer (installer implies desktop; desktop is not persisted)", () => {
    const options = dialogDefaultsFromProject({ pack: { installer: true } }, "/proj", "x");
    expect(options.desktop).toBe(true);
    expect(options.installer).toBe(true);
  });
});

describe("projectYamlFromPack", () => {
  it("writes pack fields + icon and preserves the prev display name", () => {
    const data = projectYamlFromPack(
      { name: "Pinefield Valley", icon: "icon.png", desktop: true, installer: true, mods: false, splitAssets: true, outDir: "/proj/dist-pack" },
      { name: "My Farm" },
    );
    expect(data).toEqual({
      name: "My Farm",
      icon: "icon.png",
      pack: { name: "Pinefield Valley", installer: true, mods: false, splitAssets: true },
    });
  });

  it("removes empty name/icon and keeps desktop out of project.yaml", () => {
    const data = projectYamlFromPack(
      { name: "", icon: "", desktop: true, installer: false, mods: false, splitAssets: false, outDir: "" },
      { name: "My Farm", pack: { name: "Old", mods: true } },
    );
    expect(data.pack?.name).toBeUndefined();
    expect(data.pack?.installer).toBe(false);
    expect(data.pack?.mods).toBe(false);
    expect(data.pack?.splitAssets).toBe(false);
    expect(data.icon).toBeUndefined();
    expect(data.name).toBe("My Farm");
  });
});

describe("resolvePackRequest", () => {
  it("maps dialog options to a pack request (content/outDir, installer implies desktop)", () => {
    const request = resolvePackRequest(
      "/proj",
      { name: "Pinefield Valley", icon: "", desktop: false, installer: true, mods: true, splitAssets: false, outDir: "" },
      true,
    );
    expect(request).toEqual({
      contentDir: "/proj/content",
      outDir: `/proj/${DEFAULT_PACK_SUBDIR}`,
      desktop: true,
      installer: true,
      splitAssets: false,
      modsDir: "/proj/mods",
      name: "Pinefield Valley",
    });
  });

  it("honors a custom outDir, plain desktop, and omits mods when off or the dir is absent", () => {
    const custom = resolvePackRequest(
      "/proj",
      { name: "", icon: "", desktop: true, installer: false, mods: false, splitAssets: true, outDir: "/tmp/out" },
      true,
    );
    expect(custom.outDir).toBe("/tmp/out");
    expect(custom.splitAssets).toBe(true);
    expect(custom.desktop).toBe(true);
    expect(custom.name).toBeUndefined();
    expect(custom.modsDir).toBeUndefined();

    const noModsDir = resolvePackRequest(
      "/proj",
      { name: "", icon: "", desktop: false, installer: false, mods: true, splitAssets: false, outDir: "" },
      false,
    );
    expect(noModsDir.modsDir).toBeUndefined();
  });
});

describe("packHints", () => {
  it("includes desktop and installer commands when those modes are on", () => {
    const hints = packHints({
      defCount: 1,
      kinds: 1,
      assetCount: 0,
      modCount: 0,
      desktop: true,
      installer: true,
    });
    const text = hints.join("\n");
    expect(text).toContain("npm install && npm start");
    expect(text).toContain("npm install && npm run dist");
  });

  it("is site-only without desktop/installer", () => {
    const hints = packHints({ defCount: 1, kinds: 1, assetCount: 0, modCount: 0, desktop: false, installer: false });
    expect(hints).toHaveLength(1);
    expect(hints[0]).toContain("serve the output folder");
  });
});