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/**
/**
* Method to keep user funds in sync upon new transactions
* Method to keep user funds in sync upon new transactions
*/
*/
exports.walletSync = functions.region('europe-west1').firestore
exports.walletSync = functions.region('europe-west1').firestore
.document('transactions/{transactionId}')
.document('transactions/{transactionId}')
.onCreate( ( snapshot, context ) => {
.onCreate( ( snapshot, context ) => {

let item = snapshot.data()
let item = snapshot.data()


if ( item.type === 'debit' && item.description === 'subscription' )
if ( item.type === 'debit' && item.description === 'subscription' )
return null
return null


console.log( 'processing', context.eventId, item.processed, context.params.transactionId )
console.log( 'processing', context.eventId, context.params.transactionId )

if ( item.processed === context.eventId )
{
console.log( 'processed_already', context.params.transactionId )
return null
}


return firestore
return firestore
.runTransaction( transaction =>
.runTransaction( transaction =>
transaction.get( firestore.doc(`users/${item.owner}/personal/wallet`) ).then( doc => {
transaction.get( firestore.doc(`users/${item.owner}/personal/wallet`) ).then( doc => {


let wallet = doc.get('funds')
let wallet = doc.data()

if ( wallet.lastEventId === context.eventId )
{
console.log( 'processed_already', context.eventId )
return null
}
wallet.funds += item.amount
wallet.funds += item.amount


transaction.update( snapshot.ref, { processed: context.eventId })
return transaction.update( doc.ref, { funds: wallet.funds, lastEventId: context.eventId })
return transaction.update( doc.ref, { funds: wallet.funds })


})
})
)
)


})
})
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