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import { getGroupExpenses } from '@/lib/api'
export function getTotalGroupSpending(
expenses: NonNullable<Awaited<ReturnType<typeof getGroupExpenses>>>,
): number {
return expenses.reduce(
(total, expense) =>
expense.isReimbursement ? total : total + expense.amount,
0,
)
}
export function getTotalActiveUserPaidFor(
activeUserId: string | null,
expenses: NonNullable<Awaited<ReturnType<typeof getGroupExpenses>>>,
): number {
return expenses.reduce(
(total, expense) =>
expense.paidBy.id === activeUserId && !expense.isReimbursement
? total + expense.amount
: total,
0,
)
}
export function getTotalActiveUserShare(
activeUserId: string | null,
expenses: NonNullable<Awaited<ReturnType<typeof getGroupExpenses>>>,
): number {
let total = 0
expenses.forEach((expense) => {
if (expense.isReimbursement) return
const paidFors = expense.paidFor
const userPaidFor = paidFors.find(
(paidFor) => paidFor.participantId === activeUserId,
)
if (!userPaidFor) {
// If the active user is not involved in the expense, skip it
return
}
switch (expense.splitMode) {
case 'EVENLY':
// Divide the total expense evenly among all participants
total += expense.amount / paidFors.length
break
case 'BY_AMOUNT':
// Directly add the user's share if the split mode is BY_AMOUNT
total += userPaidFor.shares
break
case 'BY_PERCENTAGE':
// Calculate the user's share based on their percentage of the total expense
total += (expense.amount * userPaidFor.shares) / 10000 // Assuming shares are out of 10000 for percentage
break
case 'BY_SHARES':
// Calculate the user's share based on their shares relative to the total shares
const totalShares = paidFors.reduce(
(sum, paidFor) => sum + paidFor.shares,
0,
)
total += (expense.amount * userPaidFor.shares) / totalShares
break
}
})
return parseFloat(total.toFixed(2))
}
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