/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @flow
 */

import type {Fiber} from 'react-reconciler/src/ReactInternalTypes';
import type {WorkTagMap} from 'react-devtools-shared/src/backend/types';

import {
  getDisplayName,
  getWrappedDisplayName,
} from 'react-devtools-shared/src/utils';
import {gt, gte} from 'react-devtools-shared/src/backend/utils';
import {
  CONCURRENT_MODE_NUMBER,
  CONCURRENT_MODE_SYMBOL_STRING,
  DEPRECATED_ASYNC_MODE_SYMBOL_STRING,
  PROVIDER_NUMBER,
  PROVIDER_SYMBOL_STRING,
  CONTEXT_NUMBER,
  CONTEXT_SYMBOL_STRING,
  CONSUMER_SYMBOL_STRING,
  STRICT_MODE_NUMBER,
  STRICT_MODE_SYMBOL_STRING,
  PROFILER_NUMBER,
  PROFILER_SYMBOL_STRING,
  REACT_MEMO_CACHE_SENTINEL,
  SCOPE_NUMBER,
  SCOPE_SYMBOL_STRING,
  FORWARD_REF_NUMBER,
  FORWARD_REF_SYMBOL_STRING,
  MEMO_NUMBER,
  MEMO_SYMBOL_STRING,
  SERVER_CONTEXT_SYMBOL_STRING,
} from 'react-devtools-shared/src/backend/shared/ReactSymbols';

export type getDisplayNameForFiberType = (fiber: Fiber) => string | null;
export type getTypeSymbolType = (type: any) => symbol | string | number;

export type ReactPriorityLevelsType = {
  ImmediatePriority: number,
  UserBlockingPriority: number,
  NormalPriority: number,
  LowPriority: number,
  IdlePriority: number,
  NoPriority: number,
};

export function getInternalReactConstants(version: string): {
  getDisplayNameForFiber: getDisplayNameForFiberType,
  getTypeSymbol: getTypeSymbolType,
  ReactPriorityLevels: ReactPriorityLevelsType,
  ReactTypeOfWork: WorkTagMap,
  StrictModeBits: number,
  SuspenseyImagesMode: number,
} {
  // **********************************************************
  // The section below is copied from files in React repo.
  // Keep it in sync, and add version guards if it changes.
  //
  // Technically these priority levels are invalid for versions before 16.9,
  // but 16.9 is the first version to report priority level to DevTools,
  // so we can avoid checking for earlier versions and support pre-16.9 canary releases in the process.
  let ReactPriorityLevels: ReactPriorityLevelsType = {
    ImmediatePriority: 99,
    UserBlockingPriority: 98,
    NormalPriority: 97,
    LowPriority: 96,
    IdlePriority: 95,
    NoPriority: 90,
  };

  if (gt(version, '17.0.2')) {
    ReactPriorityLevels = {
      ImmediatePriority: 1,
      UserBlockingPriority: 2,
      NormalPriority: 3,
      LowPriority: 4,
      IdlePriority: 5,
      NoPriority: 0,
    };
  }

  let StrictModeBits = 0;
  if (gte(version, '18.0.0-alpha')) {
    // 18+
    StrictModeBits = 0b011000;
  } else if (gte(version, '16.9.0')) {
    // 16.9 - 17
    StrictModeBits = 0b1;
  } else if (gte(version, '16.3.0')) {
    // 16.3 - 16.8
    StrictModeBits = 0b10;
  }

  const SuspenseyImagesMode = 0b0100000;

  let ReactTypeOfWork: WorkTagMap = null as any as WorkTagMap;

  // **********************************************************
  // The section below is copied from files in React repo.
  // Keep it in sync, and add version guards if it changes.
  //
  // TODO Update the gt() check below to be gte() whichever the next version number is.
  // Currently the version in Git is 17.0.2 (but that version has not been/may not end up being released).
  if (gt(version, '17.0.1')) {
    ReactTypeOfWork = {
      CacheComponent: 24, // Experimental
      ClassComponent: 1,
      ContextConsumer: 9,
      ContextProvider: 10,
      CoroutineComponent: -1, // Removed
      CoroutineHandlerPhase: -1, // Removed
      DehydratedSuspenseComponent: 18, // Behind a flag
      ForwardRef: 11,
      Fragment: 7,
      FunctionComponent: 0,
      HostComponent: 5,
      HostPortal: 4,
      HostRoot: 3,
      HostHoistable: 26, // In reality, 18.2+. But doesn't hurt to include it here
      HostSingleton: 27, // Same as above
      HostText: 6,
      IncompleteClassComponent: 17,
      IncompleteFunctionComponent: 28,
      IndeterminateComponent: 2, // removed in 19.0.0
      LazyComponent: 16,
      LegacyHiddenComponent: 23, // Does not exist in 18+ OSS but exists in fb builds
      MemoComponent: 14,
      Mode: 8,
      OffscreenComponent: 22, // Experimental in 17. Stable in 18+
      Profiler: 12,
      ScopeComponent: 21, // Experimental
      SimpleMemoComponent: 15,
      SuspenseComponent: 13,
      SuspenseListComponent: 19, // Experimental
      TracingMarkerComponent: 25, // Experimental - This is technically in 18 but we don't
      // want to fork again so we're adding it here instead
      YieldComponent: -1, // Removed
      Throw: 29,
      ViewTransitionComponent: 30, // Experimental
      ActivityComponent: 31,
    };
  } else if (gte(version, '17.0.0-alpha')) {
    ReactTypeOfWork = {
      CacheComponent: -1, // Doesn't exist yet
      ClassComponent: 1,
      ContextConsumer: 9,
      ContextProvider: 10,
      CoroutineComponent: -1, // Removed
      CoroutineHandlerPhase: -1, // Removed
      DehydratedSuspenseComponent: 18, // Behind a flag
      ForwardRef: 11,
      Fragment: 7,
      FunctionComponent: 0,
      HostComponent: 5,
      HostPortal: 4,
      HostRoot: 3,
      HostHoistable: -1, // Doesn't exist yet
      HostSingleton: -1, // Doesn't exist yet
      HostText: 6,
      IncompleteClassComponent: 17,
      IncompleteFunctionComponent: -1, // Doesn't exist yet
      IndeterminateComponent: 2,
      LazyComponent: 16,
      LegacyHiddenComponent: 24,
      MemoComponent: 14,
      Mode: 8,
      OffscreenComponent: 23, // Experimental
      Profiler: 12,
      ScopeComponent: 21, // Experimental
      SimpleMemoComponent: 15,
      SuspenseComponent: 13,
      SuspenseListComponent: 19, // Experimental
      TracingMarkerComponent: -1, // Doesn't exist yet
      YieldComponent: -1, // Removed
      Throw: -1, // Doesn't exist yet
      ViewTransitionComponent: -1, // Doesn't exist yet
      ActivityComponent: -1, // Doesn't exist yet
    };
  } else if (gte(version, '16.6.0-beta.0')) {
    ReactTypeOfWork = {
      CacheComponent: -1, // Doesn't exist yet
      ClassComponent: 1,
      ContextConsumer: 9,
      ContextProvider: 10,
      CoroutineComponent: -1, // Removed
      CoroutineHandlerPhase: -1, // Removed
      DehydratedSuspenseComponent: 18, // Behind a flag
      ForwardRef: 11,
      Fragment: 7,
      FunctionComponent: 0,
      HostComponent: 5,
      HostPortal: 4,
      HostRoot: 3,
      HostHoistable: -1, // Doesn't exist yet
      HostSingleton: -1, // Doesn't exist yet
      HostText: 6,
      IncompleteClassComponent: 17,
      IncompleteFunctionComponent: -1, // Doesn't exist yet
      IndeterminateComponent: 2,
      LazyComponent: 16,
      LegacyHiddenComponent: -1,
      MemoComponent: 14,
      Mode: 8,
      OffscreenComponent: -1, // Experimental
      Profiler: 12,
      ScopeComponent: -1, // Experimental
      SimpleMemoComponent: 15,
      SuspenseComponent: 13,
      SuspenseListComponent: 19, // Experimental
      TracingMarkerComponent: -1, // Doesn't exist yet
      YieldComponent: -1, // Removed
      Throw: -1, // Doesn't exist yet
      ViewTransitionComponent: -1, // Doesn't exist yet
      ActivityComponent: -1, // Doesn't exist yet
    };
  } else if (gte(version, '16.4.3-alpha')) {
    ReactTypeOfWork = {
      CacheComponent: -1, // Doesn't exist yet
      ClassComponent: 2,
      ContextConsumer: 11,
      ContextProvider: 12,
      CoroutineComponent: -1, // Removed
      CoroutineHandlerPhase: -1, // Removed
      DehydratedSuspenseComponent: -1, // Doesn't exist yet
      ForwardRef: 13,
      Fragment: 9,
      FunctionComponent: 0,
      HostComponent: 7,
      HostPortal: 6,
      HostRoot: 5,
      HostHoistable: -1, // Doesn't exist yet
      HostSingleton: -1, // Doesn't exist yet
      HostText: 8,
      IncompleteClassComponent: -1, // Doesn't exist yet
      IncompleteFunctionComponent: -1, // Doesn't exist yet
      IndeterminateComponent: 4,
      LazyComponent: -1, // Doesn't exist yet
      LegacyHiddenComponent: -1,
      MemoComponent: -1, // Doesn't exist yet
      Mode: 10,
      OffscreenComponent: -1, // Experimental
      Profiler: 15,
      ScopeComponent: -1, // Experimental
      SimpleMemoComponent: -1, // Doesn't exist yet
      SuspenseComponent: 16,
      SuspenseListComponent: -1, // Doesn't exist yet
      TracingMarkerComponent: -1, // Doesn't exist yet
      YieldComponent: -1, // Removed
      Throw: -1, // Doesn't exist yet
      ViewTransitionComponent: -1, // Doesn't exist yet
      ActivityComponent: -1, // Doesn't exist yet
    };
  } else {
    ReactTypeOfWork = {
      CacheComponent: -1, // Doesn't exist yet
      ClassComponent: 2,
      ContextConsumer: 12,
      ContextProvider: 13,
      CoroutineComponent: 7,
      CoroutineHandlerPhase: 8,
      DehydratedSuspenseComponent: -1, // Doesn't exist yet
      ForwardRef: 14,
      Fragment: 10,
      FunctionComponent: 1,
      HostComponent: 5,
      HostPortal: 4,
      HostRoot: 3,
      HostHoistable: -1, // Doesn't exist yet
      HostSingleton: -1, // Doesn't exist yet
      HostText: 6,
      IncompleteClassComponent: -1, // Doesn't exist yet
      IncompleteFunctionComponent: -1, // Doesn't exist yet
      IndeterminateComponent: 0,
      LazyComponent: -1, // Doesn't exist yet
      LegacyHiddenComponent: -1,
      MemoComponent: -1, // Doesn't exist yet
      Mode: 11,
      OffscreenComponent: -1, // Experimental
      Profiler: 15,
      ScopeComponent: -1, // Experimental
      SimpleMemoComponent: -1, // Doesn't exist yet
      SuspenseComponent: 16,
      SuspenseListComponent: -1, // Doesn't exist yet
      TracingMarkerComponent: -1, // Doesn't exist yet
      YieldComponent: 9,
      Throw: -1, // Doesn't exist yet
      ViewTransitionComponent: -1, // Doesn't exist yet
      ActivityComponent: -1, // Doesn't exist yet
    };
  }
  // **********************************************************
  // End of copied code.
  // **********************************************************

  function getTypeSymbol(type: any): symbol | string | number {
    const symbolOrNumber =
      typeof type === 'object' && type !== null ? type.$$typeof : type;

    return typeof symbolOrNumber === 'symbol'
      ? symbolOrNumber.toString()
      : symbolOrNumber;
  }

  const {
    CacheComponent,
    ClassComponent,
    IncompleteClassComponent,
    IncompleteFunctionComponent,
    FunctionComponent,
    IndeterminateComponent,
    ForwardRef,
    HostRoot,
    HostHoistable,
    HostSingleton,
    HostComponent,
    HostPortal,
    HostText,
    Fragment,
    LazyComponent,
    LegacyHiddenComponent,
    MemoComponent,
    OffscreenComponent,
    Profiler,
    ScopeComponent,
    SimpleMemoComponent,
    SuspenseComponent,
    SuspenseListComponent,
    TracingMarkerComponent,
    Throw,
    ViewTransitionComponent,
    ActivityComponent,
  } = ReactTypeOfWork;

  function resolveFiberType(type: any): $FlowFixMe {
    const typeSymbol = getTypeSymbol(type);
    switch (typeSymbol) {
      case MEMO_NUMBER:
      case MEMO_SYMBOL_STRING:
        // recursively resolving memo type in case of memo(forwardRef(Component))
        return resolveFiberType(type.type);
      case FORWARD_REF_NUMBER:
      case FORWARD_REF_SYMBOL_STRING:
        return type.render;
      default:
        return type;
    }
  }

  // NOTICE Keep in sync with shouldFilterFiber() and other get*ForFiber methods
  function getDisplayNameForFiber(
    fiber: Fiber,
    shouldSkipForgetCheck: boolean = false,
  ): string | null {
    const {elementType, type, tag} = fiber;

    let resolvedType = type;
    if (typeof type === 'object' && type !== null) {
      resolvedType = resolveFiberType(type);
    }

    let resolvedContext: any = null;
    if (
      !shouldSkipForgetCheck &&
      // $FlowFixMe[incompatible-type] fiber.updateQueue is mixed
      (fiber.updateQueue?.memoCache != null ||
        (Array.isArray(fiber.memoizedState?.memoizedState) &&
          fiber.memoizedState.memoizedState[0]?.[REACT_MEMO_CACHE_SENTINEL]) ||
        fiber.memoizedState?.memoizedState?.[REACT_MEMO_CACHE_SENTINEL])
    ) {
      const displayNameWithoutForgetWrapper = getDisplayNameForFiber(
        fiber,
        true,
      );
      if (displayNameWithoutForgetWrapper == null) {
        return null;
      }

      return `Forget(${displayNameWithoutForgetWrapper})`;
    }

    switch (tag) {
      // $FlowFixMe[invalid-compare]
      case ActivityComponent:
        return 'Activity';
      // $FlowFixMe[invalid-compare]
      case CacheComponent:
        return 'Cache';
      case ClassComponent:
      // $FlowFixMe[invalid-compare] -- falls through
      case IncompleteClassComponent:
      // $FlowFixMe[invalid-compare] -- falls through
      case IncompleteFunctionComponent:
      case FunctionComponent:
      case IndeterminateComponent:
        return getDisplayName(resolvedType);
      case ForwardRef:
        return getWrappedDisplayName(
          elementType,
          resolvedType,
          'ForwardRef',
          'Anonymous',
        );
      case HostRoot:
        const fiberRoot = fiber.stateNode;
        if (fiberRoot != null && fiberRoot._debugRootType !== null) {
          return fiberRoot._debugRootType;
        }
        return null;
      case HostComponent:
      // $FlowFixMe[invalid-compare] -- falls through
      case HostSingleton:
      // $FlowFixMe[invalid-compare] -- falls through
      case HostHoistable:
        return type;
      case HostPortal:
      case HostText:
        return null;
      case Fragment:
        return 'Fragment';
      // $FlowFixMe[invalid-compare]
      case LazyComponent:
        // This display name will not be user visible.
        // Once a Lazy component loads its inner component, React replaces the tag and type.
        // This display name will only show up in console logs when DevTools DEBUG mode is on.
        return 'Lazy';
      // $FlowFixMe[invalid-compare]
      case MemoComponent:
      // $FlowFixMe[invalid-compare] -- falls through
      case SimpleMemoComponent:
        // Display name in React does not use `Memo` as a wrapper but fallback name.
        return getWrappedDisplayName(
          elementType,
          resolvedType,
          'Memo',
          'Anonymous',
        );
      case SuspenseComponent:
        return 'Suspense';
      // $FlowFixMe[invalid-compare]
      case LegacyHiddenComponent:
        return 'LegacyHidden';
      // $FlowFixMe[invalid-compare]
      case OffscreenComponent:
        return 'Offscreen';
      // $FlowFixMe[invalid-compare]
      case ScopeComponent:
        return 'Scope';
      // $FlowFixMe[invalid-compare]
      case SuspenseListComponent:
        return 'SuspenseList';
      case Profiler:
        return 'Profiler';
      // $FlowFixMe[invalid-compare]
      case TracingMarkerComponent:
        return 'TracingMarker';
      // $FlowFixMe[invalid-compare]
      case ViewTransitionComponent:
        return 'ViewTransition';
      // $FlowFixMe[invalid-compare]
      case Throw:
        // This should really never be visible.
        return 'Error';
      default:
        const typeSymbol = getTypeSymbol(type);

        switch (typeSymbol) {
          case CONCURRENT_MODE_NUMBER:
          case CONCURRENT_MODE_SYMBOL_STRING:
          case DEPRECATED_ASYNC_MODE_SYMBOL_STRING:
            return null;
          case PROVIDER_NUMBER:
          case PROVIDER_SYMBOL_STRING:
            // 16.3.0 exposed the context object as "context"
            // PR #12501 changed it to "_context" for 16.3.1+
            // NOTE Keep in sync with inspectElementRaw()
            resolvedContext = fiber.type._context || fiber.type.context;
            return `${resolvedContext.displayName || 'Context'}.Provider`;
          case CONTEXT_NUMBER:
          case CONTEXT_SYMBOL_STRING:
          case SERVER_CONTEXT_SYMBOL_STRING:
            if (
              fiber.type._context === undefined &&
              fiber.type.Provider === fiber.type
            ) {
              // In 19+, Context.Provider === Context, so this is a provider.
              resolvedContext = fiber.type;
              return `${resolvedContext.displayName || 'Context'}.Provider`;
            }

            // 16.3-16.5 read from "type" because the Consumer is the actual context object.
            // 16.6+ should read from "type._context" because Consumer can be different (in DEV).
            // NOTE Keep in sync with inspectElementRaw()
            resolvedContext = fiber.type._context || fiber.type;

            // NOTE: TraceUpdatesBackendManager depends on the name ending in '.Consumer'
            // If you change the name, figure out a more resilient way to detect it.
            return `${resolvedContext.displayName || 'Context'}.Consumer`;
          case CONSUMER_SYMBOL_STRING:
            // 19+
            resolvedContext = fiber.type._context;
            return `${resolvedContext.displayName || 'Context'}.Consumer`;
          case STRICT_MODE_NUMBER:
          case STRICT_MODE_SYMBOL_STRING:
            return null;
          case PROFILER_NUMBER:
          case PROFILER_SYMBOL_STRING:
            return `Profiler(${fiber.memoizedProps.id})`;
          case SCOPE_NUMBER:
          case SCOPE_SYMBOL_STRING:
            return 'Scope';
          default:
            // Unknown element type.
            // This may mean a new element type that has not yet been added to DevTools.
            return null;
        }
    }
  }

  return {
    getDisplayNameForFiber,
    getTypeSymbol,
    ReactPriorityLevels,
    ReactTypeOfWork,
    StrictModeBits,
    SuspenseyImagesMode,
  };
}