const assert = require("assert");
const fs = require("fs");
const path = require("path");
const vm = require("vm");

const root = path.join(__dirname, "..");
const sandbox = fs.mkdtempSync(path.join(root, ".tmp-lumi-overlays-"));
const serviceDir = path.join(sandbox, "src", "services");
fs.mkdirSync(serviceDir, { recursive: true });

for (const file of [
  "config.js",
  "db.js",
  "settings.js",
  "web-events.js",
  "overlay-secrets.js",
  "obs-browser-defaults.js",
  "overlay-modules.js",
  "overlays.js",
  "overlay-permissions.js",
  "overlay-connectors.js",
  "overlay-chat.js",
  "discord-chat-content.js"
]) {
  fs.copyFileSync(path.join(root, "src", "services", file), path.join(serviceDir, file));
}

let database = null;
try {
  database = require(path.join(serviceDir, "db.js"));
  database.migrate();
  const settings = require(path.join(serviceDir, "settings.js"));
  settings.ensureDefaults();
  settings.setSetting("session_secret", "overlay-verification-session-secret");
  const overlays = require(path.join(serviceDir, "overlays.js"));
  const overlayModules = require(path.join(serviceDir, "overlay-modules.js"));
  const permissions = require(path.join(serviceDir, "overlay-permissions.js"));
  const connectors = require(path.join(serviceDir, "overlay-connectors.js"));
  const providerList = connectors.listOverlayConnectorProviders();
  assert(providerList.some((provider) => provider.id === "local_obs_websocket" && provider.available !== false));
  assert(providerList.some((provider) => provider.id === "obs_browser_bridge" && provider.available !== false));
  assert(providerList.some((provider) => provider.id === "trusted_lumi_client" && provider.available === false));
  const bridge = new connectors.ObsBrowserBridgeConnector({ overlay_id: "bridge-test", sync_direction: "obs_to_overlay" });
  const bridgeReport = bridge.acceptReport({
    instance_id: "obs-browser-test",
    plugin_version: "2.24.0",
    control_level: 2,
    current_scene: "Starting Soon",
    scenes: ["Starting Soon", "Live"],
    transitions: ["Cut", "Fade"],
    current_transition: "Fade",
    canvas_width: 1920,
    canvas_height: 1080,
    outputs: { streaming: true },
    source_active: true,
    source_visible: true
  });
  assert.strictEqual(bridgeReport.accepted, true);
  assert.strictEqual(bridgeReport.current_scene, "Starting Soon");
  assert.deepStrictEqual(bridgeReport.scenes, ["Starting Soon", "Live"]);
  assert.strictEqual(bridgeReport.control_level_label, "Read scenes and transitions");
  assert.strictEqual(bridgeReport.profiles_supported, false);
  bridge.disconnect();
  const sourceTypes = overlayModules.listOverlayModuleTypes();
  assert(sourceTypes.some((type) => type.id === "video"));
  assert(sourceTypes.some((type) => type.id === "audio"));
  assert(sourceTypes.some((type) => type.id === "chat"));

  const created = overlays.createOverlay({ name: "Main Stream", sceneName: "Live" });
  assert.strictEqual(created.scenes.length, 1, "new overlays must receive a first scene");
  assert.strictEqual(created.canvas_width, 1920);
  assert.strictEqual(created.canvas_height, 1080);
  assert(created.public_token.length >= 40, "overlay token must be high entropy");
  assert(created.scenes[0].public_token.length >= 40, "scene token must be high entropy");

  const resolved = overlays.resolvePublicOverlay(created.public_token);
  assert.strictEqual(resolved.overlay.id, created.id);
  const fixed = overlays.resolvePublicOverlay(created.public_token, created.scenes[0].public_token);
  assert.strictEqual(fixed.fixedScene.id, created.scenes[0].id);

  const headlineId = overlays.addModule(created.scenes[0].id, {
    name: "Headline",
    type: "text",
    enabled: true,
    config: { text: "Starting soon", x: 5, y: 10, width: 90, height: 20 }
  });
  const state = overlays.buildPublicState(created.id);
  assert.strictEqual(state.scene.modules.length, 1);
  assert.strictEqual(state.scene.modules[0].config.text, "Starting soon");
  overlays.updateModuleTransform(headlineId, { x: 50, y: 50, width: 40, height: 15, anchor: "center" });
  const transformed = overlays.getOverlay(created.id).scenes[0].modules[0];
  assert.strictEqual(transformed.config.anchor, "center");
  assert.strictEqual(transformed.config.text, "Starting soon", "canvas transforms must preserve source content");

  const textConfig = overlayModules.normalizeModuleConfig("text", {
    horizontalAlign: "right",
    verticalAlign: "bottom",
    overflow: "shrink",
    anchor: "bottom-right"
  });
  assert.strictEqual(textConfig.horizontalAlign, "right");
  assert.strictEqual(textConfig.verticalAlign, "bottom");
  assert.strictEqual(textConfig.overflow, "shrink");
  assert.strictEqual(textConfig.anchor, "bottom-right");
  for (const supportedColor of ["#fff", "#ffff", "#ffffff", "#ffffffff"]) {
    assert.strictEqual(overlayModules.normalizeModuleConfig("text", { color: supportedColor }).color, supportedColor);
  }
  assert.strictEqual(overlayModules.normalizeModuleConfig("text", { color: "#fffff" }).color, "#ffffff");
  const webConfig = overlayModules.normalizeModuleConfig("web", {
    url: "https://example.com/alerts",
    autoRefresh: true,
    healthCheck: true,
    refreshIntervalSeconds: 10,
    retryLimit: 9
  });
  assert.strictEqual(webConfig.autoRefresh, true);
  assert.strictEqual(webConfig.healthCheck, true);
  assert.strictEqual(webConfig.refreshIntervalSeconds, 30);
  assert.strictEqual(webConfig.retryLimit, 5);
  assert.strictEqual(webConfig.injectPageCss, true);
  assert.strictEqual(webConfig.forceTransparentBackground, true);
  assert.strictEqual(webConfig.customCss, "body { background-color: rgba(0, 0, 0, 0); margin: 0px auto; overflow: hidden; }");
  const videoConfig = overlayModules.normalizeModuleConfig("video", {
    url: "https://example.com/alert.webm",
    playBehavior: "loop",
    muted: false,
    volume: 0.65,
    playbackRate: 1.25,
    startAt: 2.5,
    fit: "cover"
  });
  assert.strictEqual(videoConfig.playBehavior, "loop");
  assert.strictEqual(videoConfig.volume, 0.65);
  assert.strictEqual(videoConfig.playbackRate, 1.25);
  assert.strictEqual(videoConfig.startAt, 2.5);
  assert.strictEqual(videoConfig.fit, "cover");
  const audioConfig = overlayModules.normalizeModuleConfig("audio", {
    url: "https://example.com/alert.ogg",
    playBehavior: "manual",
    volume: 5
  });
  assert.strictEqual(audioConfig.playBehavior, "manual");
  assert.strictEqual(audioConfig.showControls, true);
  assert.strictEqual(audioConfig.volume, 1);
  const chatConfig = overlayModules.normalizeModuleConfig("chat", {
    platforms: ["twitch", "discord", "unsupported"],
    channels: "twitch:cozycarnage\ndiscord:community-chat",
    blockedUsers: "twitch:hidden_viewer|viewer-2\nlumi:linked-user|lumi-user-2",
    maxMessages: 100,
    messageTimeoutSeconds: -1,
    background: "#0000",
    messageBackground: "#0f172bcc",
    inAnimation: "scale",
    outAnimation: "slide-down",
    customCss: ".message { border: 1px solid white; }"
  });
  assert.deepStrictEqual(chatConfig.platforms, ["twitch", "discord"]);
  assert.deepStrictEqual(chatConfig.channels, ["twitch:cozycarnage", "discord:community-chat"]);
  assert.deepStrictEqual(chatConfig.blockedUsers, ["twitch:hidden_viewer|viewer-2", "lumi:linked-user|lumi-user-2"]);
  assert.strictEqual(chatConfig.maxMessages, 50);
  assert.strictEqual(chatConfig.messageTimeoutSeconds, 0);
  assert.strictEqual(chatConfig.background, "#0000");
  assert.strictEqual(chatConfig.inAnimation, "scale");
  assert(chatConfig.customCss.includes(".message"));
  assert.strictEqual(overlayModules.normalizeModuleConfig("chat", { inAnimation: "slide-right", outAnimation: "slide-up" }).inAnimation, "slide-right");
  assert.strictEqual(overlayModules.normalizeModuleConfig("chat", { inAnimation: "slide-right", outAnimation: "slide-up" }).outAnimation, "slide-up");
  assert.deepStrictEqual(overlayModules.normalizeModuleConfig("chat", {}).platforms, ["twitch", "youtube", "discord"]);
  const styledWebConfig = overlayModules.normalizeModuleConfig("web", {
    url: "https://example.com/widget",
    cropLeft: 12.5,
    zoom: 1.4,
    customCss: "iframe { filter: grayscale(1); }"
  });
  assert.strictEqual(styledWebConfig.cropLeft, 12.5);
  assert.strictEqual(styledWebConfig.zoom, 1.4);
  assert(styledWebConfig.customCss.endsWith("iframe { filter: grayscale(1); }"));
  assert(styledWebConfig.customCss.startsWith("body { background-color: rgba(0, 0, 0, 0);"));
  assert.strictEqual(overlayModules.normalizeModuleConfig("web", { injectPageCss: false }).injectPageCss, false);

  overlays.updateOverlay(created.id, { canvasWidth: 1280, canvasHeight: 720 });
  assert.deepStrictEqual(overlays.buildPublicState(created.id).canvas, { width: 1280, height: 720 });

  const second = overlays.addScene(created.id, { name: "Break", obsSceneName: "BRB" });
  overlays.setActiveScene(created.id, second.id, { source: "verify" });
  assert.strictEqual(overlays.buildPublicState(created.id).scene.id, second.id);
  assert.strictEqual(overlays.buildPublicState(created.id, created.scenes[0].id).scene.name, "Live");

  const websiteId = overlays.addModule(created.scenes[0].id, {
    name: "Alerts",
    type: "web",
    enabled: true,
    config: { url: "https://alerts.example/widget" }
  });
  const chatId = overlays.addModule(created.scenes[0].id, {
    name: "Combined chat",
    type: "chat",
    enabled: true,
    config: { platforms: ["twitch", "youtube"], maxMessages: 6 }
  });
  const chatState = overlays.buildPublicState(created.id, created.scenes[0].id).scene.modules.find((module) => module.id === chatId);
  assert.strictEqual(chatState.renderType, "chat");
  assert.deepStrictEqual(chatState.config.platforms, ["twitch", "youtube"]);
  const overlayChat = require(path.join(serviceDir, "overlay-chat.js"));
  const normalizedChat = overlayChat.normalizeChatMessage({
    id: "message-1",
    platform: "twitch",
    text: "Hello chat",
    channel: { id: "123", name: "#cozycarnage" },
    author: { id: "viewer-1", name: "Viewer", username: "viewer", color: "#abcdef", badges: ["Subscriber"], lumi: { id: "lumi-user-1", username: "linked-user" } }
  });
  assert.strictEqual(normalizedChat.text, "Hello chat");
  assert.strictEqual(normalizedChat.author.badges[0].label, "Subscriber");
  assert.strictEqual(overlayChat.messageMatchesConfig(normalizedChat, chatState.config), true);
  assert.strictEqual(overlayChat.messageMatchesConfig({ ...normalizedChat, platform: "discord" }, chatState.config), false);
  assert.strictEqual(overlayChat.messageBlockedByConfig(normalizedChat, { blockedUsers: ["twitch:viewer|other-id"] }), true);
  assert.strictEqual(overlayChat.messageBlockedByConfig(normalizedChat, { blockedUsers: ["lumi:linked-user|other-id"] }), true);
  assert.strictEqual(overlayChat.messageBlockedByConfig(normalizedChat, { blockedUsers: ["youtube:viewer"] }), false);
  const mediaOnlyChat = overlayChat.normalizeChatMessage({
    id: "message-gif",
    platform: "discord",
    text: "",
    media: [{ url: "https://cdn.example/dance.gif", type: "image", alt: "Dance" }],
    author: { id: "discord-viewer", name: "Discord viewer" }
  });
  assert.strictEqual(mediaOnlyChat.media[0].url, "https://cdn.example/dance.gif");
  assert.strictEqual(mediaOnlyChat.text, "");
  const { discordOverlayContent } = require(path.join(serviceDir, "discord-chat-content.js"));
  const discordContent = discordOverlayContent({
    content: "Hello <a:party:123456> https://cdn.example/dance.gif",
    attachments: new Map(),
    embeds: [],
    stickers: new Map()
  });
  assert.strictEqual(discordContent.text, "Hello <a:party:123456>");
  assert.strictEqual(discordContent.emotes[0].image, "https://cdn.discordapp.com/emojis/123456.gif?size=96&quality=lossless");
  assert.strictEqual(discordContent.media[0].url, "https://cdn.example/dance.gif");
  overlayChat.publishOverlayChatMessage(normalizedChat);
  assert(overlayChat.recentOverlayChatMessages(created.id).some((event) => event.payload.id === "message-1"));
  const websiteState = overlays.buildPublicState(created.id, created.scenes[0].id);
  const websiteRenderUrl = websiteState.scene.modules.find((module) => module.id === websiteId).config.renderUrl;
  const websiteTicket = websiteRenderUrl.split("/").at(-1);
  assert(websiteRenderUrl.startsWith("/overlay-web/"));
  assert.strictEqual(overlays.resolveWebSourceTicket(websiteTicket).moduleId, websiteId);

  const oldOverlayToken = created.public_token;
  const newOverlayToken = overlays.regenerateOverlayToken(created.id);
  assert.strictEqual(overlays.resolvePublicOverlay(oldOverlayToken), null, "regeneration must revoke old overlay tokens");
  assert(overlays.resolvePublicOverlay(newOverlayToken));
  assert.strictEqual(overlays.resolveWebSourceTicket(websiteTicket), null, "overlay URL regeneration must revoke website render tickets");
  const refreshedWebsiteUrl = overlays.buildPublicState(created.id, created.scenes[0].id).scene.modules.find((module) => module.id === websiteId).config.renderUrl;
  const refreshedWebsiteTicket = refreshedWebsiteUrl.split("/").at(-1);
  assert(overlays.resolveWebSourceTicket(refreshedWebsiteTicket));

  const refreshed = overlays.getOverlay(created.id, { includeSecrets: true });
  const firstScene = refreshed.scenes.find((scene) => scene.name === "Live");
  const oldSceneToken = firstScene.public_token;
  const newSceneToken = overlays.regenerateSceneToken(firstScene.id);
  assert.strictEqual(overlays.resolvePublicOverlay(newOverlayToken, oldSceneToken), null, "regeneration must revoke old fixed scene tokens");
  assert(overlays.resolvePublicOverlay(newOverlayToken, newSceneToken));
  assert.strictEqual(overlays.resolveWebSourceTicket(refreshedWebsiteTicket), null, "scene URL regeneration must revoke website render tickets");
  overlays.deleteModule(websiteId);
  overlays.deleteModule(chatId);

  overlays.deleteScene(second.id);
  assert.throws(() => overlays.deleteScene(firstScene.id), /at least one scene/);

  const duplicate = overlays.duplicateOverlay(created.id);
  assert.notStrictEqual(duplicate.public_token, newOverlayToken);
  assert.strictEqual(duplicate.scenes.length, 1);
  assert.strictEqual(duplicate.scenes[0].modules.length, 1);

  overlays.saveObsSettings(created.id, {
    enabled: false,
    provider: "local_obs_websocket",
    endpoint: "ws://127.0.0.1:4455",
    password: "verification-secret",
    syncDirection: "bidirectional",
    reconnect: true
  });
  const storedObs = database.db.prepare("SELECT password_encrypted FROM overlay_obs_settings WHERE overlay_id = ?").get(created.id);
  assert(storedObs.password_encrypted && !storedObs.password_encrypted.includes("verification-secret"));
  assert.strictEqual(overlays.getObsSettings(created.id, { includeSecret: true }).password, "verification-secret");

  assert.strictEqual(permissions.canAccessOverlay({ isAdmin: true }, created.id, "view_secrets"), true);
  assert.strictEqual(permissions.canAccessOverlay({ isMod: true }, created.id, "view_secrets"), false);
  const unregister = permissions.registerOverlayAccessProvider({
    allows: ({ overlayId, capability }) => overlayId === created.id && capability === "manage"
  });
  assert.strictEqual(permissions.canAccessOverlay({ isMod: true }, created.id, "manage"), true);
  assert.strictEqual(permissions.canAccessOverlay({ isMod: true }, created.id, "view_secrets"), false);
  unregister();

  const editorView = fs.readFileSync(path.join(root, "src", "web", "views", "admin-overlay-detail.ejs"), "utf8");
  const editorScript = fs.readFileSync(path.join(root, "src", "web", "public", "overlay-management.js"), "utf8");
  const runtimeScript = fs.readFileSync(path.join(root, "src", "web", "public", "overlay-runtime.js"), "utf8");
  const rendererScript = fs.readFileSync(path.join(root, "src", "web", "public", "overlay-renderer.js"), "utf8");
  const renderView = fs.readFileSync(path.join(root, "src", "web", "views", "overlay-render.ejs"), "utf8");
  const { OBS_BROWSER_DEFAULT_CSS } = require(path.join(root, "src", "services", "obs-browser-defaults.js"));
  const connectorScript = fs.readFileSync(path.join(root, "src", "services", "overlay-connectors.js"), "utf8");
  const twitchBadgeScript = fs.readFileSync(path.join(root, "src", "services", "twitch-chat-assets.js"), "utf8");
  const routeScript = fs.readFileSync(path.join(root, "src", "services", "overlay-routes.js"), "utf8");
  assert(editorView.includes("data-overlay-canvas"), "management page must include a visual canvas");
  assert(editorView.includes('data-module-fields="text"') && editorView.includes('data-module-fields="web"'));
  assert(editorView.includes('data-module-fields="video"') && editorView.includes('data-module-fields="audio"'));
  assert(editorView.includes('data-module-fields="chat"') && editorView.includes('name="chat_custom_css"'));
  assert(editorView.includes('name="chat_blocked_users"') && editorView.includes("lumi:internal_name|user-id"));
  assert(editorView.includes('name="custom_css"') && editorView.includes('name="crop_left"'));
  assert(editorView.includes('name="inject_page_css"') && editorView.includes("Apply CSS inside the website"));
  assert(editorView.includes('name="force_transparent_background"') && editorView.includes("Keep the website background transparent"));
  assert(editorView.includes("data-preview-background") && editorView.includes("data-source-revert"));
  assert(editorView.includes("obsBrowserDefaultCss") && editorView.includes("OBS Browser Source setup"));
  assert(editorView.includes("data-color-picker") && editorView.includes("overlay-transform-disclosure"));
  assert(editorView.includes('data-confirm-action="/admin/overlays/<%= overlay.id %>/modules/<%= module.id %>/delete"'), "source deletion must use the shared timed-confirmation action flow");
  assert(editorScript.includes("data-resize-handle") && editorScript.includes("snapTargets"));
  assert(editorScript.includes("previewForm(form)") && editorScript.includes("Live preview · not saved"));
  assert(editorScript.includes("focusCanvas = true") && editorScript.includes("focusCanvas: false"), "draft rerenders must preserve form focus");
  assert(editorScript.includes("--overlay-settings-max-height"), "settings height must follow its viewport position");
  assert(runtimeScript.includes("overlay:module-refresh") && runtimeScript.includes("checkWebsiteSource"));
  assert(runtimeScript.includes("overlay:chat-message") && runtimeScript.includes("handleChatMessage"));
  assert(runtimeScript.includes("window.obsstudio") && runtimeScript.includes("overlay:obs-browser-command"));
  assert(rendererScript.includes("buildMedia") && rendererScript.includes("buildWebsite"));
  assert(rendererScript.includes("buildChat") && rendererScript.includes("chatAccepts"));
  assert(rendererScript.includes("chatUserBlocked") && rendererScript.includes("/icons/platforms/"));
  assert(rendererScript.includes("/icons/badges/"));
  assert(rendererScript.includes("previewChatMessages") && rendererScript.includes("schedulePreviewChat"));
  assert(rendererScript.includes("width:fit-content") && rendererScript.includes("align-self:${alignment}"));
  assert(rendererScript.includes("enter-slide-right") && rendererScript.includes("leave-slide-up"));
  assert(rendererScript.includes('mediaData.type === "video"') && rendererScript.includes('className = "media-row"'));
  assert(rendererScript.includes('frame.setAttribute("allow", "autoplay; fullscreen")'));
  assert(rendererScript.includes('frame.setAttribute("allowtransparency", "true")'));
  assert(rendererScript.includes("values.renderUrl || values.url"));
  assert(!rendererScript.includes('${values.customCss || ""}'), "website CSS must be injected into the page, not scoped to the outer frame");
  assert(rendererScript.includes('className = "lumi-overlay-stage"'), "preview and OBS must share a fixed canvas stage");
  assert.strictEqual(OBS_BROWSER_DEFAULT_CSS, "body { background-color: rgba(0, 0, 0, 0); margin: 0px auto; overflow: hidden; }");
  assert(renderView.includes('<style id="obs-browser-default-css"><%- obsBrowserDefaultCss %></style>'));
  const rendererContext = { window: { matchMedia: () => ({ matches: false }) }, URL };
  vm.runInNewContext(rendererScript, rendererContext);
  const previewLayout = rendererContext.window.LumiOverlayRenderer.stageLayout(
    { clientWidth: 480, clientHeight: 270 },
    { width: 1920, height: 1080 }
  );
  const obsLayout = rendererContext.window.LumiOverlayRenderer.stageLayout(
    { clientWidth: 1920, clientHeight: 1080 },
    { width: 1920, height: 1080 }
  );
  assert.strictEqual(previewLayout.width, 1920);
  assert.strictEqual(previewLayout.height, 1080);
  assert.strictEqual(previewLayout.scaleX, 0.25);
  assert.strictEqual(previewLayout.scaleY, 0.25);
  assert.strictEqual(obsLayout.scaleX, 1);
  assert.strictEqual(obsLayout.scaleY, 1);
  assert(connectorScript.includes('id: "obs_browser_bridge"') && connectorScript.includes("acceptReport(report"));
  assert(twitchBadgeScript.includes("api.twitch.tv/helix/${path}") && twitchBadgeScript.includes("chat/badges") && twitchBadgeScript.includes("image_url_2x"));
  assert(twitchBadgeScript.includes("resolveTwitchAvatar") && twitchBadgeScript.includes("profile_image_url") && twitchBadgeScript.includes("users?${query}"));
  assert(routeScript.includes("/obs-bridge") && routeScript.includes("/obs/import"));
  assert(routeScript.includes('/overlay-web/:ticket') && routeScript.includes("loadInjectedOverlayDocument"));
  assert(routeScript.includes("/preview") && routeScript.includes("web-preview/:ticket"));

  console.log("Overlay verification passed: CRUD, fixed-canvas preview parity, transparent OBS defaults, layout controls, external recovery, token revocation, encrypted OBS credentials, and permissions.");
} finally {
  database?.db.close();
  fs.rmSync(sandbox, { recursive: true, force: true });
}