abstract providers behind a common interface

accountProviders.go

@@ -0,0 +1,20 @@
+package main
+
+import (
+	"deadbeef.codes/steven/ynab-portfolio-monitor/bitcoin"
+	"deadbeef.codes/steven/ynab-portfolio-monitor/questrade"
+)
+
+// AccountProvider is the base set of requirements to be implemented for any integration
+type AccountProvider interface {
+	Name() string                          // Returns the name of the provider
+	Configure() error                      // Configures the provider for first use - if an error is returned the provider is not used
+	GetBalances() ([]int, []string, error) // A slice of balances, and an index mapped slice of ynab account IDs this provider handles is returned
+}
+
+// Instantiate all providers for configuration
+// If configuration for a provider does not exist, it will be pruned during init()
+var allProviders []AccountProvider = []AccountProvider{
+	&questrade.Provider{},
+	&bitcoin.Provider{},
+}