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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 | 1x 1x 1x 1x 1x 13x 13x 13x 2x 11x 11x 11x 4x 7x 12x 7x 2x 5x 4x 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 language 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 } = body
// Validate input
if (!languagePreferences || !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'
})
}
}
// 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'
})
}
}
// Update user preferences in DynamoDB
const result = await docClient.send(
new UpdateCommand({
TableName: process.env.USERS_TABLE_NAME,
Key: { id: userId },
UpdateExpression: 'SET languagePreferences = :prefs, updatedAt = :now',
ExpressionAttributeValues: {
':prefs': languagePreferences,
':now': new Date().toISOString()
},
ReturnValues: 'ALL_NEW'
})
)
return {
statusCode: 200,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({
message: 'Language preferences updated successfully',
languagePreferences: result.Attributes?.languagePreferences || []
})
}
} 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 language preferences',
details: error.message
})
}
}
}
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