implement AppConfig and refactored AppContext

data/records.go

@@ -14,12 +14,22 @@ type Record struct {
 
 // AppContext is the application data store that holds Records
 type AppContext struct {
-	Records []Record
+	Records  []Record
+	dataPath string
+}
+
+func NewContext(dataPath string) (AppContext, error) {
+	ctx := AppContext{dataPath: dataPath}
+	err := ctx.LoadRecords()
+	if err != nil {
+		return AppContext{}, err
+	}
+	return ctx, nil
 }
 
 // LoadRecords will load records from file
-func (ctx *AppContext) LoadRecords(filename string) error {
-	data, err := os.ReadFile(filename)
+func (ctx *AppContext) LoadRecords() error {
+	data, err := os.ReadFile(ctx.dataPath)
 	if err != nil {
 		return err
 	}
@@ -27,12 +37,12 @@ func (ctx *AppContext) LoadRecords(filename string) error {
 }
 
 // SaveRecords will save records to a file
-func (ctx *AppContext) SaveRecords(filename string) error {
+func (ctx *AppContext) SaveRecords() error {
 	jsonData, err := json.Marshal(ctx.Records)
 	if err != nil {
 		return err
 	}
-	return os.WriteFile(filename, jsonData, 0660)
+	return os.WriteFile(ctx.dataPath, jsonData, 0660)
 }
 
 // AddReading will add a Reading to the AppContext

main.go

@@ -9,6 +9,7 @@ import (
 	"strconv"
 	"strings"
 
+	"ketotrack/config"
 	"ketotrack/data"
 	"ketotrack/model"
 )
@@ -38,9 +39,14 @@ func init() {
 }
 
 func main() {
-	var appCtx data.AppContext
+	appConfig := config.Load()
+	appCtx, err := data.NewContext(appConfig.DataPath)
+	if err != nil {
+		fmt.Printf("Error initializing application context: %s\n", err)
+		return
+	}
 
-	if err := appCtx.LoadRecords(recordsFilename); err != nil {
+	if err := appCtx.LoadRecords(); err != nil {
 		fmt.Printf("Error loading records from file: %s\n", err)
 	}
 
@@ -79,7 +85,7 @@ func main() {
 	}
 
 	// Save Records before exiting
-	if err := appCtx.SaveRecords(recordsFilename); err != nil {
+	if err := appCtx.SaveRecords(); err != nil {
 		fmt.Printf("Error saving records to file: %s\n", err)
 	}
 }