71 lines
2.2 KiB
Go
71 lines
2.2 KiB
Go
package bitcoin
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import (
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"fmt"
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"os"
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)
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type Provider struct {
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bitcoinAddresses []string // Slice of bitcoin addresses this provider monitors
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ynabAccountID string // YNAB account ID this provider updates - all bitcoin addresses are summed up and mapped to this YNAB account
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client *client // HTTP client for interacting with Questrade API
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}
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func (p *Provider) Name() string {
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return "Bitcoin - Blockstream.info"
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}
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// Configures the provider for usage via environment variables and persistentData
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// If an error is returned, the provider will not be used
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func (p *Provider) Configure() error {
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var err error
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// Load environment variables in continous series with suffix starting at 0
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// Multiple addresses can be configured, (eg _1, _2)
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// As soon as the series is interrupted, we assume we're done
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p.bitcoinAddresses = make([]string, 0)
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for i := 0; true; i++ {
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bitcoinAddress := os.Getenv(fmt.Sprintf("bitcoin_address_%d", i))
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if bitcoinAddress == "" {
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if i == 0 {
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return fmt.Errorf("this account provider is not configured")
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}
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break
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}
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p.bitcoinAddresses = append(p.bitcoinAddresses, bitcoinAddress)
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}
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p.ynabAccountID = os.Getenv("bitcoin_ynab_account")
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// Create new HTTP client
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p.client, err = newClient()
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if err != nil {
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return fmt.Errorf("failed to create new bitcoin client: %v", err)
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}
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return nil
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}
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// Returns slices of account balances and mapped YNAB account IDs, along with an error
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func (p *Provider) GetBalances() ([]int, []string, error) {
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balances := make([]int, 0)
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ynabAccountIDs := make([]string, 0)
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var satoshiBalance int
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for _, bitcoinAddress := range p.bitcoinAddresses {
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addressResponse, err := p.client.GetAddress(bitcoinAddress)
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if err != nil {
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return balances, ynabAccountIDs, fmt.Errorf("failed to get bitcoin address '%s': %v", bitcoinAddress, err)
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}
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satoshiBalance += addressResponse.ChainStats.FundedTxoSum - addressResponse.ChainStats.SpentTxoSum
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}
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fiatBalance, err := p.client.ConvertBTCToCAD(satoshiBalance)
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if err != nil {
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return balances, ynabAccountIDs, fmt.Errorf("failed to convert satoshi balance to fiat balance: %v", err)
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}
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balances = append(balances, fiatBalance)
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ynabAccountIDs = append(ynabAccountIDs, p.ynabAccountID)
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return balances, ynabAccountIDs, nil
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}
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