import assert from "node:assert/strict";
import { after, before, test } from "node:test";

import { createServer } from "vite";

let server;
let environment;

before(async () => {
  server = await createServer({
    appType: "custom",
    logLevel: "silent",
    server: { middlewareMode: true },
  });
  environment = await server.ssrLoadModule(
    "/src/core/environment/environmentSettings.ts",
  );
});

after(async () => {
  await server?.close();
});

function serverDocument(overrides = {}) {
  const defaults = environment.defaultEnvironmentSettings();
  return {
    schema_version: "missioncore.operator-environment/v3",
    revision: defaults.revision,
    pages: Object.fromEntries(
      Object.entries(defaults.pages).map(([surfaceId, page]) => [
        surfaceId,
        {
          header_label: page.headerLabel,
          eyebrow: page.eyebrow,
          title: page.title,
          description: page.description,
          primary_workspace_id: page.primaryWorkspaceId,
          secondary_workspace_id: page.secondaryWorkspaceId,
          background: {
            enabled: page.background.enabled,
            image_duration_seconds: page.background.imageDurationSeconds,
            items: page.background.items.map((item) => ({
              id: item.id,
              source: item.source,
              url: item.url,
              media_kind: item.mediaKind,
              file_name: item.fileName,
            })),
          },
        },
      ]),
    ),
    ...overrides,
  };
}

test("default environment exposes every current product page", () => {
  const defaults = environment.defaultEnvironmentSettings();
  assert.deepEqual(Object.keys(defaults.pages), [
    "home",
    "fleet",
    "observation",
    "missions",
    "data",
    "system",
    "polygon",
  ]);
  assert.equal(defaults.pages.fleet.primaryWorkspaceId, "vehicles");
  assert.equal(defaults.pages.observation.primaryWorkspaceId, "spatial-scene");
});

test("server document decodes and re-encodes the complete page contract", () => {
  const base = serverDocument();
  const payload = serverDocument({
    revision: 4,
    pages: {
      ...base.pages,
      observation: {
        ...base.pages.observation,
        header_label: "Контроль",
        title: "Контроль пространства",
      },
      fleet: {
        ...base.pages.fleet,
        primary_workspace_id: "contour-health",
        background: {
          enabled: true,
          image_duration_seconds: 12,
          items: [
            {
              id: "media-11111111-1111-4111-8111-111111111111",
              source: "file",
              url: `/api/v1/environment/media/fleet?generation=${"a".repeat(64)}`,
              media_kind: "video",
              file_name: "stage.mp4",
            },
            {
              id: "media-22222222-2222-4222-8222-222222222222",
              source: "url",
              url: "https://example.test/background.png",
              media_kind: "image",
              file_name: null,
            },
          ],
        },
      },
    },
  });
  const decoded = environment.decodeEnvironmentSettings(payload);
  const encoded = environment.encodeEnvironmentSettings(decoded);

  assert.equal(decoded.revision, 4);
  assert.equal(decoded.pages.observation.headerLabel, "Контроль");
  assert.equal(decoded.pages.observation.title, "Контроль пространства");
  assert.equal(decoded.pages.fleet.background.items.length, 2);
  assert.equal(decoded.pages.fleet.background.items[0].mediaKind, "video");
  assert.equal(decoded.pages.fleet.background.imageDurationSeconds, 12);
  assert.equal(encoded.pages.fleet.background.items[1].media_kind, "image");
  assert.equal(encoded.pages.fleet.background.image_duration_seconds, 12);
  assert.equal(encoded.pages.fleet.primary_workspace_id, "contour-health");
  assert.equal("schema_version" in encoded, false);
});

test("decoder fails closed on an unknown environment schema", () => {
  assert.throws(
    () => environment.decodeEnvironmentSettings(
      serverDocument({ schema_version: "future/v9" }),
    ),
    /не поддерживается/,
  );
});

test("editing a cloned page cannot mutate accepted settings", () => {
  const accepted = environment.decodeEnvironmentSettings(serverDocument());
  const draft = environment.cloneEnvironmentSettings(accepted);
  draft.pages.observation.headerLabel = "Изменено";
  draft.pages.fleet.background.enabled = true;
  draft.pages.fleet.background.items.push(
    environment.createEnvironmentMediaItem(),
  );

  assert.equal(accepted.pages.observation.headerLabel, "Наблюдение");
  assert.equal(accepted.pages.fleet.background.enabled, false);
  assert.equal(accepted.pages.fleet.background.items.length, 0);
});

test("repopulating an emptied playlist restores its background lifecycle", () => {
  const original = {
    enabled: true,
    imageDurationSeconds: 10,
    items: [
      {
        id: "media-original",
        source: "url",
        url: "https://example.test/original.mp4",
        mediaKind: "video",
        fileName: null,
      },
    ],
  };
  const emptied = environment.removeEnvironmentMediaItem(
    original,
    "media-original",
  );
  const replacement = {
    id: "media-replacement",
    source: "file",
    url: null,
    mediaKind: null,
    fileName: null,
  };
  const repopulated = environment.appendEnvironmentMediaItem(
    emptied,
    replacement,
  );

  assert.equal(emptied.enabled, false);
  assert.equal(emptied.items.length, 0);
  assert.equal(repopulated.enabled, true);
  assert.deepEqual(repopulated.items, [replacement]);
});

test("adding to an intentionally disabled nonempty playlist keeps it disabled", () => {
  const disabled = {
    enabled: false,
    imageDurationSeconds: 10,
    items: [
      {
        id: "media-hidden",
        source: "url",
        url: "https://example.test/hidden.png",
        mediaKind: "image",
        fileName: null,
      },
    ],
  };
  const next = environment.appendEnvironmentMediaItem(disabled, {
    id: "media-second",
    source: "file",
    url: null,
    mediaKind: null,
    fileName: null,
  });

  assert.equal(next.enabled, false);
  assert.equal(next.items.length, 2);
});