implement transaction.go:Transaction:String with Amount:FormatUSD

digits-work-sample-go.d/transaction.go

@@ -3,6 +3,7 @@ package analyzer
 import (
 	"encoding/json"
 	"errors"
+	"fmt"
 	"os"
 )
 
@@ -23,8 +24,23 @@ type Transaction struct {
 }
 
 func (trn Transaction) String() string {
-	// TODO: Not implemented.
-	return ""
+	if trn.Amount < 0 {
+		return trn.stringifyRefund()
+	}
+	return trn.stringifyExpense()
+}
+
+func (trn Transaction) stringifyRefund() string {
+	amount := trn.Amount * -1.0
+	return fmt.Sprintf("%s refunded %s %s", trn.Vendor, trn.stringifyCardholder(), amount.FormatUSD())
+}
+
+func (trn Transaction) stringifyExpense() string {
+	return fmt.Sprintf("%s spent %s at %s", trn.stringifyCardholder(), trn.Amount.FormatUSD(), trn.Vendor)
+}
+
+func (trn Transaction) stringifyCardholder() string {
+	return fmt.Sprintf("%s. %s", trn.CardholderFirstInitial, trn.CardholderLastName)
 }
 
 // Transactions represents a list of Transaction

todo.yaml

@@ -2,12 +2,6 @@ todo:
 - review readme tail to finish // answer 3 questions, gofmt
 - todo: go test
   subtasks:
-  - my `go mod tidy` actually cleared `go.mod` file, probably weird localhost backwards
-    compatilble stuff
-  - TestTransaction_String
-  - TestTransaction_String/MCCOLLOMS_INC
-  - TestTransaction_String/QUANTUM_ELECTRIC_INC
-  - TestTransaction_String/MARRIOTT_33716_NEW_ORLEAN
   - TestAnalyzer_TransctionsSum
   - TestAnalyzer_LargestTransaction
   - TestAnalyzer_DuplicatesExcluded
@@ -17,6 +11,10 @@ todo:
   - TestAnalyzer_TransactionsFromURLsConcurrent
   - amount.go:Rounded probably does NOT handle float precision well... it is float64
     tho...
+  - my `go mod tidy` actually cleared `go.mod` file, probably weird localhost backwards
+    compatilble stuff
+  - transaction.go:Transaction:String not clear if FormatUSD or amount currency should
+    not be changed, or even what currency Amount is
 scheduled: []
 done:
 - todo: hello world
@@ -368,3 +366,53 @@ done:
   - amount.go:Rounded probably does NOT handle float precision well... it is float64
     tho...
   ts: Sun Oct 15 11:19:11 MDT 2023
+- todo: go test
+  subtasks:
+  - my `go mod tidy` actually cleared `go.mod` file, probably weird localhost backwards
+    compatilble stuff
+  - TestTransaction_String
+  - TestTransaction_String/MCCOLLOMS_INC
+  - TestTransaction_String/QUANTUM_ELECTRIC_INC
+  - TestTransaction_String/MARRIOTT_33716_NEW_ORLEAN
+  - TestAnalyzer_TransctionsSum
+  - TestAnalyzer_LargestTransaction
+  - TestAnalyzer_DuplicatesExcluded
+  - TestAnalyzer_GroupByCategory
+  - TestAnalyzer_BigSpendersReport
+  - TestAnalyzer_TransactionsFromURLs
+  - TestAnalyzer_TransactionsFromURLsConcurrent
+  - amount.go:Rounded probably does NOT handle float precision well... it is float64
+    tho...
+  ts: Sun Oct 15 11:19:20 MDT 2023
+- todo: go test
+  subtasks:
+  - TestTransaction_String
+  - TestTransaction_String/MCCOLLOMS_INC
+  - TestTransaction_String/QUANTUM_ELECTRIC_INC
+  - TestTransaction_String/MARRIOTT_33716_NEW_ORLEAN
+  - TestAnalyzer_TransctionsSum
+  - TestAnalyzer_LargestTransaction
+  - TestAnalyzer_DuplicatesExcluded
+  - TestAnalyzer_GroupByCategory
+  - TestAnalyzer_BigSpendersReport
+  - TestAnalyzer_TransactionsFromURLs
+  - TestAnalyzer_TransactionsFromURLsConcurrent
+  - amount.go:Rounded probably does NOT handle float precision well... it is float64
+    tho...
+  - my `go mod tidy` actually cleared `go.mod` file, probably weird localhost backwards
+    compatilble stuff
+  ts: Sun Oct 15 11:24:28 MDT 2023
+- todo: go test
+  subtasks:
+  - TestAnalyzer_TransctionsSum
+  - TestAnalyzer_LargestTransaction
+  - TestAnalyzer_DuplicatesExcluded
+  - TestAnalyzer_GroupByCategory
+  - TestAnalyzer_BigSpendersReport
+  - TestAnalyzer_TransactionsFromURLs
+  - TestAnalyzer_TransactionsFromURLsConcurrent
+  - amount.go:Rounded probably does NOT handle float precision well... it is float64
+    tho...
+  - my `go mod tidy` actually cleared `go.mod` file, probably weird localhost backwards
+    compatilble stuff
+  ts: Sun Oct 15 11:24:56 MDT 2023