feat(aliases): Add code action to send test mails

handlers/aliases/commands/aliases-command.go

@@ -0,0 +1,45 @@
+package commands
+
+import (
+	"os/exec"
+	"strings"
+)
+
+func IsNewAliasesCommandAvailable() bool {
+	_, err := exec.LookPath("newaliases")
+
+	return err == nil
+}
+
+func IsSendmailCommandAvailable() bool {
+	_, err := exec.LookPath("sendmail")
+
+	return err == nil
+}
+
+func IsPostfixCommandAvailable() bool {
+	_, err := exec.LookPath("postfix")
+
+	return err == nil
+}
+
+func CanSendTestMails() bool {
+	return IsSendmailCommandAvailable() && IsPostfixCommandAvailable()
+}
+
+func UpdateAliasesDatabase() error {
+	cmd := exec.Command("newaliases")
+
+	err := cmd.Run()
+
+	return err
+}
+
+func SendTestMail(address string, content string) error {
+	cmd := exec.Command("sendmail", address)
+	cmd.Stdin = strings.NewReader(content)
+
+	err := cmd.Run()
+
+	return err
+}

handlers/aliases/commands/aliases-commands_test.go

@@ -0,0 +1,11 @@
+package commands
+
+import "testing"
+
+func TestAreAliasesCommandsAvailable(
+	t *testing.T,
+) {
+	if !IsNewAliasesCommandAvailable() {
+		t.Skip("Aliases tools not available")
+	}
+}

handlers/aliases/handlers/code-actions.go

@@ -0,0 +1,51 @@
+package handlers
+
+import (
+	"config-lsp/handlers/aliases"
+	"config-lsp/handlers/aliases/commands"
+	"fmt"
+	"time"
+
+	protocol "github.com/tliron/glsp/protocol_3_16"
+)
+
+type CodeActionName string
+
+const (
+	CodeActionSendTestMail CodeActionName = "sendTestMail"
+)
+
+type CodeAction interface {
+	RunCommand(*aliases.AliasesDocument) (*protocol.ApplyWorkspaceEditParams, error)
+}
+
+type CodeActionArgs interface{}
+
+type CodeActionSendTestMailArgs struct {
+	URI  protocol.DocumentUri
+	User string
+}
+
+func CodeActionSendTestMailArgsFromArguments(arguments map[string]interface{}) CodeActionSendTestMailArgs {
+	return CodeActionSendTestMailArgs{
+		URI:  arguments["URI"].(protocol.DocumentUri),
+		User: arguments["User"].(string),
+	}
+}
+
+func (args CodeActionSendTestMailArgs) RunCommand(d *aliases.AliasesDocument) (*protocol.ApplyWorkspaceEditParams, error) {
+	content := fmt.Sprintf(
+		`Subject: Test mail from %s
+
+This is a test mail from config-lsp.
+It is intended for the user %s.
+`,
+		time.Now().Format(time.RFC1123),
+		args.User,
+	)
+
+	address := fmt.Sprintf("%s@localhost.localdomain", args.User)
+	commands.SendTestMail(address, content)
+
+	return &protocol.ApplyWorkspaceEditParams{}, nil
+}

handlers/aliases/handlers/fetch-code-actions.go

@@ -0,0 +1,59 @@
+package handlers
+
+import (
+	"config-lsp/handlers/aliases"
+	"config-lsp/handlers/aliases/ast"
+	"config-lsp/handlers/aliases/commands"
+	"fmt"
+
+	protocol "github.com/tliron/glsp/protocol_3_16"
+)
+
+type disabledExplanation struct {
+	Reason string
+}
+
+func FetchCodeActions(
+	d *aliases.AliasesDocument,
+	params *protocol.CodeActionParams,
+) []protocol.CodeAction {
+	line := params.Range.Start.Line
+
+	rawEntry, found := d.Parser.Aliases.Get(line)
+
+	if !found {
+		return nil
+	}
+
+	entry := rawEntry.(*ast.AliasEntry)
+
+	if entry.Key != nil {
+		address := fmt.Sprintf("%s@localhost.localdomain", entry.Key.Value)
+
+		commandID := "aliases." + CodeActionSendTestMail
+		command := protocol.Command{
+			Title:   fmt.Sprintf("Send a test mail to %s", address),
+			Command: string(commandID),
+			Arguments: []any{
+				CodeActionSendTestMailArgs{
+					URI:  params.TextDocument.URI,
+					User: entry.Key.Value,
+				},
+			},
+		}
+		codeAction := &protocol.CodeAction{
+			Title:   fmt.Sprintf("Send a test mail to %s", address),
+			Command: &command,
+		}
+
+		if !commands.CanSendTestMails() {
+			codeAction.Disabled.Reason = "postfix is required to send test mails"
+		}
+
+		return []protocol.CodeAction{
+			*codeAction,
+		}
+	}
+
+	return nil
+}

handlers/aliases/lsp/text-document-code-action.go

@@ -1,14 +1,16 @@
 package lsp
 
 import (
+	"config-lsp/handlers/aliases"
+	"config-lsp/handlers/aliases/handlers"
+
 	"github.com/tliron/glsp"
 	protocol "github.com/tliron/glsp/protocol_3_16"
 )
 
 func TextDocumentCodeAction(context *glsp.Context, params *protocol.CodeActionParams) ([]protocol.CodeAction, error) {
-	// document := hosts.DocumentParserMap[params.TextDocument.URI]
-	//
-	// actions := make([]protocol.CodeAction, 0, 1)
+	d := aliases.DocumentParserMap[params.TextDocument.URI]
+	actions := handlers.FetchCodeActions(d, params)
 
-	return nil, nil
+	return actions, nil
 }

handlers/aliases/lsp/workspace-execute-command.go

@@ -1,21 +1,25 @@
 package lsp
 
 import (
+	"config-lsp/handlers/aliases"
+	"config-lsp/handlers/aliases/handlers"
+	"strings"
+
 	"github.com/tliron/glsp"
 	protocol "github.com/tliron/glsp/protocol_3_16"
 )
 
 func WorkspaceExecuteCommand(context *glsp.Context, params *protocol.ExecuteCommandParams) (*protocol.ApplyWorkspaceEditParams, error) {
-	// _, command, _ := strings.Cut(params.Command, ".")
-	//
-	// switch command {
-	// case string(handlers.CodeActionInlineAliases):
-	// 	args := handlers.CodeActionInlineAliasesArgsFromArguments(params.Arguments[0].(map[string]any))
-	//
-	// 	document := hosts.DocumentParserMap[args.URI]
-	//
-	// 	return args.RunCommand(*document.Parser)
-	// }
+	_, command, _ := strings.Cut(params.Command, ".")
+
+	switch command {
+	case string(handlers.CodeActionSendTestMail):
+		args := handlers.CodeActionSendTestMailArgsFromArguments(params.Arguments[0].(map[string]any))
+
+		d := aliases.DocumentParserMap[args.URI]
+
+		return args.RunCommand(d)
+	}
 
 	return nil, nil
 }