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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 | 1x 1x 1x 1x 1x 16x 16x 16x 2x 14x 14x 14x 14x 14x 3x 11x 1x 10x 7x 12x 7x 2x 8x 1x 7x 7x 7x 7x 5x 5x 7x 2x 2x 2x 7x 6x 1x 1x | const { DynamoDBClient } = require('@aws-sdk/client-dynamodb')
const { DynamoDBDocumentClient, UpdateCommand } = require('@aws-sdk/lib-dynamodb')
const client = new DynamoDBClient({})
const docClient = DynamoDBDocumentClient.from(client)
/**
* Update user preferences
* PUT /v1/users/preferences
*/
exports.handler = async (event) => {
try {
// Extract user ID from Cognito JWT
const userId = event.requestContext?.authorizer?.claims?.sub
if (!userId) {
return {
statusCode: 401,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'Unauthorized - Missing user ID' })
}
}
// Parse request body
const body = JSON.parse(event.body || '{}')
const { languagePreferences, profilePicture } = body
const hasLanguagePreferences = Object.prototype.hasOwnProperty.call(body, 'languagePreferences')
const hasProfilePicture = Object.prototype.hasOwnProperty.call(body, 'profilePicture')
if (!hasLanguagePreferences && !hasProfilePicture) {
return {
statusCode: 400,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({
error: 'Invalid input - provide languagePreferences and/or profilePicture'
})
}
}
// Validate language preferences when provided
if (hasLanguagePreferences && !Array.isArray(languagePreferences)) {
return {
statusCode: 400,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({
error: 'Invalid input - languagePreferences must be an array'
})
}
}
if (hasLanguagePreferences) {
// Validate array contains only valid language codes (2-letter strings)
const validPrefs = languagePreferences.every(
(lang) => typeof lang === 'string' && lang.length === 2
)
if (!validPrefs) {
return {
statusCode: 400,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({
error: 'Invalid language codes - must be 2-letter strings'
})
}
}
}
// Validate profile picture key when provided (null clears the value)
if (hasProfilePicture && profilePicture !== null && typeof profilePicture !== 'string') {
return {
statusCode: 400,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({
error: 'Invalid profilePicture - must be a string or null'
})
}
}
const updateParts = ['updatedAt = :now']
const expressionAttributeValues = {
':now': new Date().toISOString()
}
const expressionAttributeNames = {}
if (hasLanguagePreferences) {
updateParts.push('languagePreferences = :prefs')
expressionAttributeValues[':prefs'] = languagePreferences
}
if (hasProfilePicture) {
updateParts.push('#profilePicture = :profilePicture')
expressionAttributeNames['#profilePicture'] = 'profilePicture'
expressionAttributeValues[':profilePicture'] = profilePicture
}
// Update user preferences in DynamoDB
const result = await docClient.send(
new UpdateCommand({
TableName: process.env.USERS_TABLE_NAME,
Key: { id: userId },
UpdateExpression: `SET ${updateParts.join(', ')}`,
ExpressionAttributeNames:
Object.keys(expressionAttributeNames).length > 0 ? expressionAttributeNames : undefined,
ExpressionAttributeValues: expressionAttributeValues,
ReturnValues: 'ALL_NEW'
})
)
return {
statusCode: 200,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({
message: 'User preferences updated successfully',
languagePreferences: result.Attributes?.languagePreferences || [],
profilePicture: result.Attributes?.profilePicture || null
})
}
} catch (error) {
console.error('Error updating user preferences:', error)
return {
statusCode: 500,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({
error: 'Failed to update user preferences',
details: error.message
})
}
}
}
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