import { beforeEach, describe, expect, it, vi } from "vitest";

vi.mock("next/cache", async () => ({ revalidatePath: (await import("@/tests/helpers/next-mocks")).revalidatePath }));
vi.mock("next/navigation", async () => ({ redirect: (await import("@/tests/helpers/next-mocks")).redirect }));
vi.mock("next/dist/client/components/redirect-error", async () => ({
  isRedirectError: (await import("@/tests/helpers/next-mocks")).isRedirectError,
}));
vi.mock("@/lib/admin-auth", async () => {
  const m = await import("@/tests/helpers/next-mocks");
  return { isAdminAuthenticated: m.isAdminAuthenticated, clearAdminSessionCookie: m.clearAdminSessionCookie };
});

import { eq } from "drizzle-orm";

import { createMediaAssetAction, deleteMediaAssetAction } from "@/app/_admin/media/actions";
import { db } from "@/lib/db";
import { mediaAsset } from "@/lib/db/schema";
import { removeManagedMediaFile } from "@/lib/media-storage";
import { createMediaAsset, createMediaUsage } from "@/tests/helpers/factories";
import { canManageUploads } from "@/tests/helpers/fs-capability";
import { adminAuth, captureRedirect, formDataFrom, resetNextMocks } from "@/tests/helpers/next-mocks";

beforeEach(() => {
  resetNextMocks();
});

describe("createMediaAssetAction", () => {
  it("errors when no file is provided", async () => {
    const url = await captureRedirect(() => createMediaAssetAction(formDataFrom({ kind: "IMAGE", label: "L" })));
    expect(url).toContain("error=");
    expect(await db.$count(mediaAsset)).toBe(0);
  });

  it.skipIf(!canManageUploads)("creates an asset from an uploaded file", async () => {
    const file = new File([new Uint8Array([0x89, 0x50, 0x4e, 0x47])], "pic.png", { type: "image/png" });
    const url = await captureRedirect(() =>
      createMediaAssetAction(formDataFrom({ kind: "IMAGE", label: "Pic", file })),
    );
    expect(url).toContain("success=");
    const assets = await db.select().from(mediaAsset);
    expect(assets.length).toBe(1);
    expect(assets[0].source).toBe("UPLOAD");
    await removeManagedMediaFile(assets[0].url);
  });

  it("redirects unauthenticated callers to the admin root", async () => {
    adminAuth.authenticated = false;
    const url = await captureRedirect(() => createMediaAssetAction(formDataFrom({ kind: "IMAGE", label: "L" })));
    expect(url).toBe("/");
  });
});

describe("deleteMediaAssetAction", () => {
  it("errors when the asset does not exist", async () => {
    const url = await captureRedirect(() => deleteMediaAssetAction(formDataFrom({ assetId: "missing" })));
    expect(url).toContain("error=");
  });

  it("refuses to delete an asset that is still in use", async () => {
    const asset = await createMediaAsset();
    await createMediaUsage(asset.id);
    const url = await captureRedirect(() => deleteMediaAssetAction(formDataFrom({ assetId: asset.id })));
    expect(url).toContain("error=");
    expect((await db.query.mediaAsset.findFirst({ where: eq(mediaAsset.id, asset.id) })) ?? null).not.toBeNull();
  });

  it("deletes an unused external asset", async () => {
    const asset = await createMediaAsset({ url: "https://cdn/external.png" });
    const url = await captureRedirect(() => deleteMediaAssetAction(formDataFrom({ assetId: asset.id })));
    expect(url).toContain("success=");
    expect((await db.query.mediaAsset.findFirst({ where: eq(mediaAsset.id, asset.id) })) ?? null).toBeNull();
  });

  it("redirects unauthenticated callers to the admin root", async () => {
    adminAuth.authenticated = false;
    const url = await captureRedirect(() => deleteMediaAssetAction(formDataFrom({ assetId: "x" })));
    expect(url).toBe("/");
  });
});