izzy lyseggen
133 lines
4.1 KiB
JavaScript
133 lines
4.1 KiB
JavaScript
'use strict'
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const appRoot = require( 'app-root-path' )
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const { ForbiddenError, UserInputError, ApolloError, withFilter } = require( 'apollo-server-express' )
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const { authorizeResolver, pubsub } = require( `${appRoot}/modules/shared` )
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const {
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createBranch,
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updateBranch,
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getBranchById,
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getBranchesByStreamId,
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getBranchByNameAndStreamId,
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deleteBranchById
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} = require( '../../services/branches' )
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const { getUserById } = require( '../../services/users' )
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// subscription events
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const BRANCH_CREATED = 'BRANCH_CREATED'
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const BRANCH_UPDATED = 'BRANCH_UPDATED'
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const BRANCH_DELETED = 'BRANCH_DELETED'
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module.exports = {
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Query: {},
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Stream: {
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async branches( parent, args, context, info ) {
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if ( args.limit && args.limit > 100 )
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throw new UserInputError( 'Cannot return more than 100 items, please use pagination.' )
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let { items, cursor, totalCount } = await getBranchesByStreamId( { streamId: parent.id, limit: args.limit, cursor: args.cursor } )
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return { totalCount, cursor, items }
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},
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async branch( parent, args, context, info ) {
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return await getBranchByNameAndStreamId( { streamId: parent.id, name: args.name } )
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},
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},
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Branch: {
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async author( parent, args, context, info ) {
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return await getUserById( { userId: parent.authorId } )
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}
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},
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Mutation: {
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async branchCreate( parent, args, context, info ) {
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await authorizeResolver( context.userId, args.branch.streamId, 'stream:contributor' )
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let id = await createBranch( { ...args.branch, authorId: context.userId } )
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if ( id ) {
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await pubsub.publish( BRANCH_CREATED, {
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branchCreated: { ...args.branch, id: id, authorId: context.userId },
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streamId: args.branch.streamId
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} )
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}
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return id
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},
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async branchUpdate( parent, args, context, info ) {
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await authorizeResolver( context.userId, args.branch.streamId, 'stream:contributor' )
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let updated = await updateBranch( { ...args.branch } )
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if ( updated ) {
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await pubsub.publish( BRANCH_UPDATED, {
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branchUpdated: { ...args.branch },
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streamId: args.branch.streamId,
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branchId: args.branch.id
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} )
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}
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return updated
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},
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async branchDelete( parent, args, context, info ) {
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let role = await authorizeResolver( context.userId, args.branch.streamId, 'stream:contributor' )
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let branch = await getBranchById( { id: args.branch.id } )
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if ( !branch ) {
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throw new ApolloError( 'Branch not found.' )
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}
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if ( branch.authorId !== context.userId && role !== 'stream:owner' )
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throw new ForbiddenError( 'Only the branch creator or stream owners are allowed to delete branches.' )
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let deleted = await deleteBranchById( { id: args.branch.id } )
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if ( deleted ) {
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await pubsub.publish( BRANCH_DELETED, { branchDeleted: { ...args.branch }, streamId: args.branch.streamId } )
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}
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return deleted
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}
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},
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Subscription: {
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branchCreated: {
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subscribe: withFilter( () => pubsub.asyncIterator( [ BRANCH_CREATED ] ),
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async ( payload, variables, context ) => {
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await authorizeResolver( context.userId, payload.streamId, 'stream:reviewer' )
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return payload.streamId === variables.streamId
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} )
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},
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branchUpdated: {
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subscribe: withFilter( () => pubsub.asyncIterator( [ BRANCH_UPDATED ] ),
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async ( payload, variables, context ) => {
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await authorizeResolver( context.userId, payload.streamId, 'stream:reviewer' )
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let streamMatch = payload.streamId === variables.streamId
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if ( streamMatch && variables.branchId ) {
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return payload.branchId === variables.branchId
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}
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return streamMatch
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} )
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},
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branchDeleted: {
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subscribe: withFilter( () => pubsub.asyncIterator( [ BRANCH_DELETED ] ),
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async ( payload, variables, context ) => {
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await authorizeResolver( context.userId, payload.streamId, 'stream:reviewer' )
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return payload.streamId === variables.streamId
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} )
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}
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}
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}
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