{
  "version": 3,
  "sources": ["../../src/hooks/use-post-editor-awareness-state.ts"],
  "sourcesContent": ["/**\n * External dependencies\n */\nimport { usePrevious } from '@wordpress/compose';\nimport { useEffect, useState } from '@wordpress/element';\nimport type { Y } from '@wordpress/sync';\n\n/**\n * Internal dependencies\n */\nimport { getSyncManager } from '../sync';\nimport type {\n\tPostEditorAwarenessState as ActiveCollaborator,\n\tPostSaveEvent,\n\tYDocDebugData,\n} from '../awareness/types';\nimport type { SelectionState, ResolvedSelection } from '../types';\nimport type { PostEditorAwareness } from '../awareness/post-editor-awareness';\n\ninterface AwarenessState {\n\tactiveCollaborators: ActiveCollaborator[];\n\tresolveSelection: ( selection: SelectionState ) => ResolvedSelection;\n\tgetDebugData: () => YDocDebugData;\n\tisCurrentCollaboratorDisconnected: boolean;\n}\n\nconst defaultResolvedSelection: ResolvedSelection = {\n\trichTextOffset: null,\n\tlocalClientId: null,\n};\n\nconst defaultState: AwarenessState = {\n\tactiveCollaborators: [],\n\tresolveSelection: () => defaultResolvedSelection,\n\tgetDebugData: () => ( {\n\t\tdoc: {},\n\t\tclients: {},\n\t\tcollaboratorMap: {},\n\t} ),\n\tisCurrentCollaboratorDisconnected: false,\n};\n\nfunction getAwarenessState(\n\tawareness: PostEditorAwareness,\n\tnewState?: ActiveCollaborator[]\n): AwarenessState {\n\tconst activeCollaborators = newState ?? awareness.getCurrentState();\n\n\treturn {\n\t\tactiveCollaborators,\n\t\tresolveSelection: ( selection: SelectionState ) =>\n\t\t\tawareness.convertSelectionStateToAbsolute( selection ),\n\t\tgetDebugData: () => awareness.getDebugData(),\n\t\tisCurrentCollaboratorDisconnected:\n\t\t\tactiveCollaborators.find( ( collaborator ) => collaborator.isMe )\n\t\t\t\t?.isConnected === false,\n\t};\n}\n\nfunction usePostEditorAwarenessState(\n\tpostId: number | null,\n\tpostType: string | null\n): AwarenessState {\n\tconst [ state, setState ] = useState< AwarenessState >( defaultState );\n\n\tuseEffect( () => {\n\t\tif ( null === postId || null === postType ) {\n\t\t\tsetState( defaultState );\n\t\t\treturn;\n\t\t}\n\n\t\tconst objectType = `postType/${ postType }`;\n\t\tconst objectId = postId.toString();\n\t\tconst awareness = getSyncManager()?.getAwareness< PostEditorAwareness >(\n\t\t\tobjectType,\n\t\t\tobjectId\n\t\t);\n\n\t\tif ( ! awareness ) {\n\t\t\tsetState( defaultState );\n\t\t\treturn;\n\t\t}\n\n\t\tawareness.setUp();\n\n\t\t// Initialize with current awareness state.\n\t\tsetState( getAwarenessState( awareness ) );\n\n\t\tconst unsubscribe = awareness?.onStateChange(\n\t\t\t( newState: ActiveCollaborator[] ) => {\n\t\t\t\tsetState( getAwarenessState( awareness, newState ) );\n\t\t\t}\n\t\t);\n\n\t\treturn unsubscribe;\n\t}, [ postId, postType ] );\n\n\treturn state;\n}\n\n/**\n * Hook to get the active collaborators for a post editor.\n *\n * @param  postId   - The ID of the post.\n * @param  postType - The type of the post.\n * @return {ActiveCollaborator[]} The active collaborators.\n */\nexport function useActiveCollaborators(\n\tpostId: number | null,\n\tpostType: string | null\n): ActiveCollaborator[] {\n\treturn usePostEditorAwarenessState( postId, postType ).activeCollaborators;\n}\n\n/**\n * Hook to resolve a selection state to a text index and block client ID.\n *\n * @param postId   - The ID of the post.\n * @param postType - The type of the post.\n * @return A function that resolves a selection to its text index and block client ID.\n */\nexport function useResolvedSelection(\n\tpostId: number | null,\n\tpostType: string | null\n): ( selection: SelectionState ) => ResolvedSelection {\n\treturn usePostEditorAwarenessState( postId, postType ).resolveSelection;\n}\n\n/**\n * Hook to get data for debugging, using the awareness state.\n *\n * @param  postId   - The ID of the post.\n * @param  postType - The type of the post.\n * @return {YDocDebugData} The debug data.\n */\nexport function useGetDebugData(\n\tpostId: number | null,\n\tpostType: string | null\n): YDocDebugData {\n\treturn usePostEditorAwarenessState( postId, postType ).getDebugData();\n}\n\n/**\n * Hook to check if the current collaborator is disconnected.\n *\n * @param  postId   - The ID of the post.\n * @param  postType - The type of the post.\n * @return {boolean} Whether the current collaborator is disconnected.\n */\nexport function useIsDisconnected(\n\tpostId: number | null,\n\tpostType: string | null\n): boolean {\n\treturn usePostEditorAwarenessState( postId, postType )\n\t\t.isCurrentCollaboratorDisconnected;\n}\n\n/**\n * Hook that subscribes to the CRDT state map and returns the most recent\n * save event (timestamp + client ID). The state map is updated by\n * `markEntityAsSaved` in `@wordpress/sync`\n *\n * @param postId   The ID of the post.\n * @param postType The type of the post.\n */\nfunction useLastPostSave(\n\tpostId: number | null,\n\tpostType: string | null\n): PostSaveEvent | null {\n\tconst [ lastSave, setLastSave ] = useState< PostSaveEvent | null >( null );\n\n\tuseEffect( () => {\n\t\tif ( null === postId || null === postType ) {\n\t\t\tsetLastSave( null );\n\t\t\treturn;\n\t\t}\n\n\t\tconst awareness = getSyncManager()?.getAwareness< PostEditorAwareness >(\n\t\t\t`postType/${ postType }`,\n\t\t\tpostId.toString()\n\t\t);\n\n\t\tif ( ! awareness ) {\n\t\t\tsetLastSave( null );\n\t\t\treturn;\n\t\t}\n\n\t\tawareness.setUp();\n\n\t\tconst stateMap = awareness.doc.getMap( 'state' );\n\t\tconst recordMap = awareness.doc.getMap( 'document' );\n\n\t\t// Only notify for saves that occur after the observer is\n\t\t// set up. This prevents false notifications when the Y.Doc\n\t\t// syncs historical state on page load or peer reconnect.\n\t\tconst setupTime = Date.now();\n\n\t\tconst observer = ( event: Y.YMapEvent< unknown > ) => {\n\t\t\tif ( event.keysChanged.has( 'savedAt' ) ) {\n\t\t\t\tconst savedAt = stateMap.get( 'savedAt' ) as number;\n\t\t\t\tconst savedByClientId = stateMap.get( 'savedBy' ) as number;\n\n\t\t\t\tif (\n\t\t\t\t\ttypeof savedAt === 'number' &&\n\t\t\t\t\ttypeof savedByClientId === 'number' &&\n\t\t\t\t\tsavedAt > setupTime\n\t\t\t\t) {\n\t\t\t\t\tconst postStatus = recordMap.get( 'status' ) as\n\t\t\t\t\t\t| string\n\t\t\t\t\t\t| undefined;\n\t\t\t\t\tsetLastSave( { savedAt, savedByClientId, postStatus } );\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\n\t\tstateMap.observe( observer );\n\n\t\treturn () => {\n\t\t\tstateMap.unobserve( observer );\n\t\t};\n\t}, [ postId, postType ] );\n\n\treturn lastSave;\n}\n\n/**\n * Hook that fires a callback when a new collaborator joins the post.\n * Handles initial hydration and state diffing internally\u2014consumers\n * only receive \"join\" events for collaborators that appear after the\n * initial state has loaded.\n *\n * The callback receives the joining collaborator and, when available,\n * the current user's state (useful for comparing `enteredAt` timestamps).\n *\n * @param postId   The ID of the post.\n * @param postType The type of the post.\n * @param callback Invoked for each collaborator that joins.\n */\nexport function useOnCollaboratorJoin(\n\tpostId: number | null,\n\tpostType: string | null,\n\tcallback: (\n\t\tcollaborator: ActiveCollaborator,\n\t\tme?: ActiveCollaborator\n\t) => void\n): void {\n\tconst { activeCollaborators } = usePostEditorAwarenessState(\n\t\tpostId,\n\t\tpostType\n\t);\n\tconst prevCollaborators = usePrevious( activeCollaborators );\n\n\tuseEffect( () => {\n\t\t/*\n\t\t * On first render usePrevious returns undefined. On subsequent\n\t\t * renders the list may still be empty while the store hydrates.\n\t\t * In both cases, skip to avoid spurious \"joined\" callbacks for\n\t\t * users already present.\n\t\t */\n\t\tif ( ! prevCollaborators || prevCollaborators.length === 0 ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst prevMap = new Map< number, ActiveCollaborator >(\n\t\t\tprevCollaborators.map( ( collaborator ) => [\n\t\t\t\tcollaborator.clientId,\n\t\t\t\tcollaborator,\n\t\t\t] )\n\t\t);\n\t\tconst me = activeCollaborators.find(\n\t\t\t( collaborator ) => collaborator.isMe\n\t\t);\n\n\t\tfor ( const collaborator of activeCollaborators ) {\n\t\t\tif (\n\t\t\t\t! prevMap.has( collaborator.clientId ) &&\n\t\t\t\t! collaborator.isMe\n\t\t\t) {\n\t\t\t\tcallback( collaborator, me );\n\t\t\t}\n\t\t}\n\t}, [ activeCollaborators, prevCollaborators, callback ] );\n}\n\n/**\n * Hook that fires a callback when a collaborator leaves the post.\n * A \"leave\" is detected when a previously-connected collaborator either\n * transitions to `isConnected = false` or disappears from the list\n * entirely while still connected. Already-disconnected collaborators\n * that are later removed from the list are silently ignored.\n *\n * @param postId   The ID of the post.\n * @param postType The type of the post.\n * @param callback Invoked for each collaborator that leaves.\n */\nexport function useOnCollaboratorLeave(\n\tpostId: number | null,\n\tpostType: string | null,\n\tcallback: ( collaborator: ActiveCollaborator ) => void\n): void {\n\tconst { activeCollaborators } = usePostEditorAwarenessState(\n\t\tpostId,\n\t\tpostType\n\t);\n\tconst prevCollaborators = usePrevious( activeCollaborators );\n\n\tuseEffect( () => {\n\t\tif ( ! prevCollaborators || prevCollaborators.length === 0 ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst newMap = new Map< number, ActiveCollaborator >(\n\t\t\tactiveCollaborators.map( ( collaborator ) => [\n\t\t\t\tcollaborator.clientId,\n\t\t\t\tcollaborator,\n\t\t\t] )\n\t\t);\n\n\t\tfor ( const prevCollab of prevCollaborators ) {\n\t\t\tif ( prevCollab.isMe || ! prevCollab.isConnected ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tconst newCollab = newMap.get( prevCollab.clientId );\n\t\t\tif ( ! newCollab?.isConnected ) {\n\t\t\t\tcallback( prevCollab );\n\t\t\t}\n\t\t}\n\t}, [ activeCollaborators, prevCollaborators, callback ] );\n}\n\n/**\n * Hook that fires a callback when a remote collaborator saves the post.\n * Only fires for saves by other collaborators (not the current user).\n * Deduplicates by `savedAt` timestamp so the same save event is never\n * reported twice.\n *\n * @param postId   The ID of the post.\n * @param postType The type of the post.\n * @param callback Invoked with the save event, the collaborator who saved,\n *                 and the previous save event (if any) for transition detection.\n */\nexport function useOnPostSave(\n\tpostId: number | null,\n\tpostType: string | null,\n\tcallback: (\n\t\tevent: PostSaveEvent,\n\t\tsaver: ActiveCollaborator,\n\t\tprevEvent: PostSaveEvent | null\n\t) => void\n): void {\n\tconst { activeCollaborators } = usePostEditorAwarenessState(\n\t\tpostId,\n\t\tpostType\n\t);\n\tconst lastPostSave = useLastPostSave( postId, postType );\n\tconst prevPostSave = usePrevious( lastPostSave );\n\n\tuseEffect( () => {\n\t\tif ( ! lastPostSave ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( prevPostSave && lastPostSave.savedAt === prevPostSave.savedAt ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst saver = activeCollaborators.find(\n\t\t\t( collaborator ) =>\n\t\t\t\tcollaborator.clientId === lastPostSave.savedByClientId &&\n\t\t\t\t! collaborator.isMe\n\t\t);\n\n\t\tif ( ! saver ) {\n\t\t\treturn;\n\t\t}\n\n\t\tcallback( lastPostSave, saver, prevPostSave ?? null );\n\t}, [ lastPostSave, prevPostSave, activeCollaborators, callback ] );\n}\n"],
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