update readme

README.md

@@ -12,7 +12,7 @@ It syncs your balance like magic!
 
 ### Example docker-compose.yml
 
-The values below are examples only.  You can configure as many account pairings as you want using environment variables in a continuous series starting from 0 as shown below.  Two example accounts are configured ending in _0 and _1 but a third can be added by adding account numbers/ID with _2.
+The values below are examples only, and show how to configure the Questrade and Bitcoin providers.  With these providers, you can configure as many account pairings as you want using environment variables in a continuous series starting from 0 as shown below.  Two example Questrade accounts are configured ending in _0 and _1 but a third can be added by adding account numbers/ID with _2.  See the respective README.md files inside the provider directories for more details.
 
 ```yaml
 version: '3.8'
@@ -32,9 +32,15 @@ services:
       - ynab_secret=98Q_J655F_TAyGnhCCDS4uqRe4R5654DT2d-ZXdssZ
       - bitcoin_address_0=bc1qg0edu4tr7pza8qsxf576r0eulr2ygt3mhldswg
       - bitcoin_address_1=bc1qeh0dkdqvjyt646657lge0nxqj67z5xa8zxl8q3
+      - bitcoin_address_2=bc1qsfsdqvj4443t64dfssfgexsaqj67z44dsjkfkj
       - bitcoin_ynab_account=1f5bec0d-f852-2fbe-bbee-02fa98ded566 # Bitcoin addresses map to single YNAB account
     volumes:
       - /data/ynab-portfolio-monitor-data:/data
 
 ```
 
+### Static JSON Providers
+
+If your broker doesn't have a provider available, or if you don't want to connect this application to your brokerage account, there is an offline solution available where you can configure your holdings in local static JSON files - and these only need to be updated if your holdings change such as after a trade has been made, or a stock split.
+
+For more details, see the README.md files located in the provider directories prefixed with "staticjson".

main.go

@@ -9,7 +9,7 @@ import (
 )
 
 var (
-	configuredProviders []AccountProvider // Any providers that are successfully configured get added to this slice
+	configuredProviders []AccountProvider // Any account providers that are successfully configured get added to this slice
 	ynabClient          *ynab.Client      // YNAB HTTP client
 )
 
@@ -29,7 +29,8 @@ func init() {
 		}
 	}
 
-	// Loop through all providers and attempt to configure them
+	// Loop through all account providers and attempt to configure them
+	// if configuration fails, the provider will not be used
 	configuredProviders = make([]AccountProvider, 0)
 	for _, p := range allProviders {
 		err := p.Configure()
@@ -60,7 +61,7 @@ func main() {
 				continue
 			}
 			if len(balances) != len(accountIDs) {
-				log.Printf("mismatched balance and accountID slice lengths - expected the same: balances length = %d, accountIDs length = %d", len(balances), len(accountIDs))
+				log.Printf("'%s' provider data validation error: mismatched balance and accountID slice lengths - expected the same: balances length = %d, accountIDs length = %d", p.Name(), len(balances), len(accountIDs))
 				continue
 			}
 			for i := range balances {