import type { Session } from "electron";import { session } from "electron";import * as Context from "effect/Context";import * as Crypto from "effect/Crypto";import * as Effect from "effect/Effect";import * as Encoding from "effect/Encoding";import * as Layer from "effect/Layer";import * as PlatformError from "effect/PlatformError";import * as Schema from "effect/Schema";import * as SynchronizedRef from "effect/SynchronizedRef"; const PREVIEW_PARTITION_PREFIX = "persist:t3code-preview-"; // Permissions granted to preview web content. `clipboard-sanitized-write` is the// Electron permission behind `navigator.clipboard.writeText()` — note it is NOT// `clipboard-write`, which is not a valid Electron permission name. Async// clipboard writes are gated by the permission *check* handler (not only the// request handler), so both handlers must allow it; otherwise built-in "Copy"// buttons — e.g. the Next.js / Vercel error overlay — fail with// `Failed to execute 'writeText' on 'Clipboard': Write permission denied`.const ALLOWED_PREVIEW_PERMISSIONS: ReadonlySet<string> = new Set([  "clipboard-read",  "clipboard-sanitized-write",  "notifications",  "geolocation",]); export class BrowserSessionPartitionDerivationError extends Schema.TaggedErrorClass<BrowserSessionPartitionDerivationError>()(  "BrowserSessionPartitionDerivationError",  {    scope: Schema.String,    cause: Schema.instanceOf(PlatformError.PlatformError),  },) {  override get message(): string {    return `Failed to derive a desktop preview browser partition for scope ${this.scope}.`;  }} export class BrowserSessionCreationError extends Schema.TaggedErrorClass<BrowserSessionCreationError>()(  "BrowserSessionCreationError",  {    scope: Schema.String,    partition: Schema.String,    cause: Schema.Defect(),  },) {  override get message(): string {    return `Failed to create a desktop preview browser session for scope ${this.scope} (partition ${this.partition}).`;  }} export class BrowserSessionStorageClearError extends Schema.TaggedErrorClass<BrowserSessionStorageClearError>()(  "BrowserSessionStorageClearError",  {    partition: Schema.String,    cause: Schema.Defect(),  },) {  override get message(): string {    return `Failed to clear desktop preview browser storage for partition ${this.partition}.`;  }} export class BrowserSessionCacheClearError extends Schema.TaggedErrorClass<BrowserSessionCacheClearError>()(  "BrowserSessionCacheClearError",  {    partition: Schema.String,    cause: Schema.Defect(),  },) {  override get message(): string {    return `Failed to clear the desktop preview browser cache for partition ${this.partition}.`;  }} export const BrowserSessionGetSessionError = Schema.Union([  BrowserSessionPartitionDerivationError,  BrowserSessionCreationError,]);export type BrowserSessionGetSessionError = typeof BrowserSessionGetSessionError.Type;export const isBrowserSessionGetSessionError = Schema.is(BrowserSessionGetSessionError); export const BrowserSessionError = Schema.Union([  BrowserSessionPartitionDerivationError,  BrowserSessionCreationError,  BrowserSessionStorageClearError,  BrowserSessionCacheClearError,]);export type BrowserSessionError = typeof BrowserSessionError.Type;export const isBrowserSessionError = Schema.is(BrowserSessionError); export class BrowserSession extends Context.Service<  BrowserSession,  {    readonly getPartition: (      scope?: string,    ) => Effect.Effect<string, BrowserSessionPartitionDerivationError>;    readonly isPartition: (partition: string) => boolean;    readonly getSession: (scope?: string) => Effect.Effect<Session, BrowserSessionGetSessionError>;    readonly clearCookies: () => Effect.Effect<void, BrowserSessionStorageClearError>;    readonly clearCache: () => Effect.Effect<void, BrowserSessionCacheClearError>;  }>()("@t3tools/desktop/preview/BrowserSession") {} export const make = Effect.gen(function* BrowserSessionMake() {  const crypto = yield* Crypto.Crypto;  const sessionsRef = yield* SynchronizedRef.make<ReadonlyMap<string, Session>>(new Map());   const getPartition = Effect.fn("BrowserSession.getPartition")(function* (scope = "shared") {    const digest = yield* crypto.digest("SHA-256", new TextEncoder().encode(scope)).pipe(      Effect.mapError(        (cause) =>          new BrowserSessionPartitionDerivationError({            scope,            cause,          }),      ),    );    return `${PREVIEW_PARTITION_PREFIX}${Encoding.encodeHex(digest).slice(0, 20)}`;  });   const getSession = Effect.fn("BrowserSession.getSession")(function* (scope = "shared") {    const partition = yield* getPartition(scope);    return yield* SynchronizedRef.modifyEffect(sessionsRef, (sessions) => {      const existing = sessions.get(partition);      if (existing) return Effect.succeed([existing, sessions] as const);      return Effect.try({        try: () => {          const browserSession = session.fromPartition(partition);          const userAgent = browserSession            .getUserAgent()            .replace(/Electron\/[\d.]+ /, "")            .replace(/\s*t3code\/[\d.]+/, "");          browserSession.setUserAgent(userAgent);          browserSession.setPermissionRequestHandler((_webContents, permission, callback) => {            callback(ALLOWED_PREVIEW_PERMISSIONS.has(permission));          });          browserSession.setPermissionCheckHandler((_webContents, permission) =>            ALLOWED_PREVIEW_PERMISSIONS.has(permission),          );          const next = new Map(sessions);          next.set(partition, browserSession);          return [browserSession, next] as const;        },        catch: (cause) =>          new BrowserSessionCreationError({            scope,            partition,            cause,          }),      });    });  });   return BrowserSession.of({    getPartition,    isPartition: (partition) => partition.startsWith(PREVIEW_PARTITION_PREFIX),    getSession,    clearCookies: Effect.fn("BrowserSession.clearCookies")(function* () {      const sessions = yield* SynchronizedRef.get(sessionsRef);      yield* Effect.all(        [...sessions.entries()].map(([partition, browserSession]) =>          Effect.tryPromise({            try: () =>              browserSession.clearStorageData({                storages: ["cookies", "localstorage", "indexdb", "websql", "serviceworkers"],              }),            catch: (cause) =>              new BrowserSessionStorageClearError({                partition,                cause,              }),          }),        ),        { concurrency: "unbounded", discard: true },      );    }),    clearCache: Effect.fn("BrowserSession.clearCache")(function* () {      const sessions = yield* SynchronizedRef.get(sessionsRef);      yield* Effect.all(        [...sessions.entries()].map(([partition, browserSession]) =>          Effect.tryPromise({            try: () => browserSession.clearCache(),            catch: (cause) =>              new BrowserSessionCacheClearError({                partition,                cause,              }),          }),        ),        { concurrency: "unbounded", discard: true },      );    }),  });}).pipe(Effect.withSpan("BrowserSession.make")); export const layer = Layer.effect(BrowserSession, make);