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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 | 1x 1x 1x 1x 1x 1x 13x 13x 13x 13x 2x 11x 11x 2x 9x 9x 1x 8x 8x 8x 8x 8x 7x 7x 7x 7x 1x 1x 1x 1x 7x 7x 7x 1x 1x | const { DynamoDBClient } = require('@aws-sdk/client-dynamodb')
const {
DynamoDBDocumentClient,
QueryCommand,
GetCommand,
BatchGetCommand
} = require('@aws-sdk/lib-dynamodb')
const { permissionChecker } = require('../utils/PermissionChecker')
const client = new DynamoDBClient({})
const docClient = DynamoDBDocumentClient.from(client)
exports.handler = async (event) => {
try {
const flowId = event.pathParameters?.flowId
const userId = event.requestContext?.authorizer?.claims?.sub
if (!userId || !flowId) {
return {
statusCode: 401,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'Unauthorized' })
}
}
// Check if user is member of this flow
const membershipCheck = await docClient.send(
new GetCommand({
TableName: process.env.FLOW_MEMBERSHIPS_TABLE_NAME,
Key: { userId, flowId }
})
)
if (!membershipCheck.Item || membershipCheck.Item.status !== 'active') {
return {
statusCode: 403,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'Access denied - not a member of this flow' })
}
}
// Check if user has permission to list roles
const permissionCheck = await permissionChecker.hasPermission(userId, flowId, 'roles:list')
if (!permissionCheck.hasPermission) {
return {
statusCode: 403,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'Forbidden - Insufficient permissions' })
}
}
// Pagination support
const limit = event.queryStringParameters?.limit
? parseInt(event.queryStringParameters.limit)
: 30
const nextToken = event.queryStringParameters?.nextToken
const queryParams = {
TableName: process.env.ROLES_TABLE_NAME,
KeyConditionExpression: 'PK = :pk AND begins_with(SK, :sk)',
ExpressionAttributeValues: {
':pk': `FLOW#${flowId}`,
':sk': 'ROLE#'
},
Limit: limit
}
// Add pagination token if provided
Iif (nextToken) {
try {
queryParams.ExclusiveStartKey = JSON.parse(Buffer.from(nextToken, 'base64').toString())
} catch {
return {
statusCode: 400,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'Invalid nextToken' })
}
}
}
const result = await docClient.send(new QueryCommand(queryParams))
const roles = result.Items || []
// Enrich roles with creator names
const creatorIds = [...new Set(roles.map((r) => r.createdBy).filter(Boolean))]
let userNameMap = {}
if (creatorIds.length > 0) {
const usersResult = await docClient.send(
new BatchGetCommand({
RequestItems: {
[process.env.USERS_TABLE_NAME]: {
Keys: creatorIds.map((id) => ({ id }))
}
}
})
)
const users = usersResult.Responses?.[process.env.USERS_TABLE_NAME] || []
userNameMap = Object.fromEntries(users.map((u) => [u.id, u.name]))
}
const enrichedRoles = roles.map((role) => ({
...role,
createdByName: userNameMap[role.createdBy] || null
}))
const responseNextToken = result.LastEvaluatedKey
? Buffer.from(JSON.stringify(result.LastEvaluatedKey)).toString('base64')
: null
return {
statusCode: 200,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({
items: enrichedRoles,
nextToken: responseNextToken,
hasMore: !!responseNextToken
})
}
} catch (error) {
console.error('Error listing roles:', error)
return {
statusCode: 500,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'Failed to list roles' })
}
}
}
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