Added command history (#45)

* Added command line history to the command, query and filter prompts.
* Added query planning debugging to the log.
* Fixed bug in query expression which was not treating true and false as boolean literals.
* Fixed a bug in the query planning logic which was incorrectly determine that an expression of the form sort_key ^= "string", with no partition key, could be executed as a query instead of a scan.

internal/common/ui/commandctrl/commandctrl.go

@@ -3,6 +3,7 @@ package commandctrl
 import (
 	"bufio"
 	"bytes"
+	"context"
 	tea "github.com/charmbracelet/bubbletea"
 	"github.com/pkg/errors"
 	"log"
@@ -14,13 +15,17 @@ import (
 	"github.com/lmika/shellwords"
 )
 
+const commandsCategory = "commands"
+
 type CommandController struct {
+	historyProvider  IterProvider
 	commandList      *CommandList
 	lookupExtensions []CommandLookupExtension
 }
 
-func NewCommandController() *CommandController {
+func NewCommandController(historyProvider IterProvider) *CommandController {
 	return &CommandController{
+		historyProvider:  historyProvider,
 		commandList:      nil,
 		lookupExtensions: nil,
 	}
@@ -37,7 +42,8 @@ func (c *CommandController) AddCommandLookupExtension(ext CommandLookupExtension
 
 func (c *CommandController) Prompt() tea.Msg {
 	return events.PromptForInputMsg{
-		Prompt: ":",
+		Prompt:  ":",
+		History: c.historyProvider.Iter(context.Background(), commandsCategory),
 		OnDone: func(value string) tea.Msg {
 			return c.Execute(value)
 		},

internal/common/ui/commandctrl/commandctrl_test.go

@@ -1,7 +1,9 @@
 package commandctrl_test
 
 import (
+	"context"
 	"github.com/lmika/audax/internal/common/ui/events"
+	"github.com/lmika/audax/internal/dynamo-browse/services"
 	"testing"
 
 	"github.com/lmika/audax/internal/common/ui/commandctrl"
@@ -10,7 +12,7 @@ import (
 
 func TestCommandController_Prompt(t *testing.T) {
 	t.Run("prompt user for a command", func(t *testing.T) {
-		cmd := commandctrl.NewCommandController()
+		cmd := commandctrl.NewCommandController(mockIterProvider{})
 
 		res := cmd.Prompt()
 
@@ -19,3 +21,10 @@ func TestCommandController_Prompt(t *testing.T) {
 		assert.Equal(t, ":", promptForInputMsg.Prompt)
 	})
 }
+
+type mockIterProvider struct {
+}
+
+func (m mockIterProvider) Iter(ctx context.Context, category string) services.HistoryProvider {
+	return nil
+}

internal/common/ui/commandctrl/iface.go

@@ -0,0 +1,10 @@
+package commandctrl
+
+import (
+	"context"
+	"github.com/lmika/audax/internal/dynamo-browse/services"
+)
+
+type IterProvider interface {
+	Iter(ctx context.Context, category string) services.HistoryProvider
+}