♲ Refactor configuration to use viper with context propagation

- Replace global ConfigPath and Overrides with viper-based configuration
- Add viper.New() to create configurable viper instances
- Store viper and unmarshaled Config struct in context for testability
- Add RetrieveFromContext and AddToContext helper functions
- Update files.Append to accept context and retrieve config from it
- Update formatters.Preferred and formatters.New to accept context
- Add PersistentPreRunE in CLI to create and configure viper instance
- Support -c flag for custom config file path
- Support -v flag for config value overrides
- Update all test files to create viper and add to context
- Remove unused config types and load functions
- Add viper as dependency with automatic env var support (MYLOG_*)

formatters/json_test.go

@@ -1,22 +1,35 @@
 package formatters
 
 import (
+	"context"
 	"fmt"
 	"testing"
 	"time"
 
+	"codeberg.org/danjones000/my-log/config"
 	"codeberg.org/danjones000/my-log/internal/testutil/bep"
 	"codeberg.org/danjones000/my-log/models"
 	"github.com/nalgeon/be"
+	"github.com/spf13/viper"
 )
 
+func setupJsonTestContext(t *testing.T) context.Context {
+	t.Helper()
+	v := viper.New()
+	v.SetConfigType("toml")
+	v.Set("formatters.json.pretty_print", false)
+	return config.AddToContext(t.Context(), v)
+}
+
 func TestJsonName(t *testing.T) {
-	f, _ := New("json")
+	ctx := setupJsonTestContext(t)
+	f, _ := New(ctx, "json")
 	be.Equal(t, f.Name(), "json")
 }
 
 func TestJsonMeta(t *testing.T) {
-	f, _ := New("json")
+	ctx := setupJsonTestContext(t)
+	f, _ := New(ctx, "json")
 	m := models.Meta{Key: "foo", Value: 42}
 	exp := `{"foo":42}`
 	o, err := f.Meta(m)
@@ -25,8 +38,9 @@ func TestJsonMeta(t *testing.T) {
 }
 
 func TestJsonEntry(t *testing.T) {
+	ctx := setupJsonTestContext(t)
 	when := time.Now()
-	f, _ := New("json")
+	f, _ := New(ctx, "json")
 	m := models.Meta{Key: "foo", Value: 42}
 	e := models.Entry{
 		Title:  "Homer",
@@ -40,8 +54,9 @@ func TestJsonEntry(t *testing.T) {
 }
 
 func TestJsonLog(t *testing.T) {
+	ctx := setupJsonTestContext(t)
 	when := time.Now()
-	f, _ := New("json")
+	f, _ := New(ctx, "json")
 	m := models.Meta{Key: "foo", Value: 42}
 	e := models.Entry{
 		Title:  "Homer",
@@ -56,7 +71,8 @@ func TestJsonLog(t *testing.T) {
 }
 
 func TestJsonNoLogs(t *testing.T) {
-	f, _ := New("json")
+	ctx := setupJsonTestContext(t)
+	f, _ := New(ctx, "json")
 	o, err := f.Logs([]models.Log{})
 	var exp []byte
 	be.Err(t, err, nil)
@@ -64,7 +80,8 @@ func TestJsonNoLogs(t *testing.T) {
 }
 
 func TestJsonErr(t *testing.T) {
-	f, _ := New("json")
+	ctx := setupJsonTestContext(t)
+	f, _ := New(ctx, "json")
 	o, err := f.Meta(models.Meta{Key: "foo", Value: make(chan bool)})
 	var exp []byte
 	be.Err(t, err)