62 lines
1.4 KiB
Go
62 lines
1.4 KiB
Go
package analyzer
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import (
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"encoding/json"
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"errors"
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"os"
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)
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// Transaction represents a transaction from our upstream source.
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// URL: https://catalog.data.gov/dataset/purchase-card-pcard-fiscal-year-2014
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type Transaction struct {
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Category string `json:"MerchantCategory"`
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Vendor string
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Description string
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AgencyName string
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CardholderLastName string
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TransactionDate string
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Amount Amount `json:",string"`
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YearMonth string
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CardholderFirstInitial string
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AgencyNumber string
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PostedDate string
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}
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func (trn Transaction) String() string {
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// TODO: Not implemented.
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return ""
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}
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// Transactions represents a list of Transaction
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type Transactions []Transaction
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// Sum adds all transactions together.
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func (trns Transactions) Sum() Amount {
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// TODO: Not implemented.
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return 0.0
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}
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// Count is the number of unique Transactions.
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func (trns Transactions) Count() int {
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return len(trns)
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}
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func TransactionsFromFile(path string) (Transactions, error) {
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jsonFile, err := os.Open(path)
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if err != nil {
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return nil, err
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}
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defer jsonFile.Close()
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var transactions Transactions
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if err := json.NewDecoder(jsonFile).Decode(&transactions); err != nil {
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return nil, err
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}
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return transactions, nil
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}
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func TransactionsFromURLs(url ...string) (Transactions, error) {
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return nil, errors.New("not implemented")
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}
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