feat: add selected update installs and polished UI

internal/gui/server.go

@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"io"
 	"log"
 	"net"
 	"net/http"
@@ -50,6 +51,10 @@ type ignoreRequest struct {
 	Ignored bool   `json:"ignored"`
 }
 
+type installRequest struct {
+	Packages []string `json:"packages"`
+}
+
 func Run(configPath, statePath string, openBrowser bool) error {
 	listener, err := net.Listen("tcp", "127.0.0.1:0")
 	if err != nil {
@@ -209,7 +214,15 @@ func (s *Server) install(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	name, args, err := terminalCommand(cfg)
+	var req installRequest
+	if r.Body != nil {
+		if err := json.NewDecoder(r.Body).Decode(&req); err != nil && !errors.Is(err, io.EOF) {
+			writeError(w, err, http.StatusBadRequest)
+			return
+		}
+	}
+
+	name, args, err := terminalCommand(cfg, req.Packages)
 	if err != nil {
 		writeError(w, err, http.StatusBadRequest)
 		return
@@ -242,7 +255,7 @@ func setIgnored(names []string, name string, ignored bool) []string {
 }
 
 func systemStatus(cfg config.Config) SystemStatus {
-	terminal, _, _ := terminalCommand(cfg)
+	terminal, _, _ := terminalCommand(cfg, nil)
 	return SystemStatus{
 		AURHelper:       updater.AURHelper(),
 		Terminal:        terminal,
@@ -298,10 +311,22 @@ func kernelVersion() string {
 	return strings.TrimSpace(string(out))
 }
 
-func terminalCommand(cfg config.Config) (string, []string, error) {
+func terminalCommand(cfg config.Config, packages []string) (string, []string, error) {
 	updateCommand := "lazy-update-manager update; printf '\\nDone. Press enter to close... '; read _"
+	if len(packages) > 0 {
+		selected := shellPackageList(packages)
+		if selected == "" {
+			return "", nil, errors.New("no valid packages selected")
+		}
+		updateCommand = "sudo pacman -S --needed " + selected + "; printf '\\nDone. Press enter to close... '; read _"
+		if helper := updater.AURHelper(); helper != "" && cfg.CheckAUR {
+			updateCommand = helper + " -S --needed " + selected + "; printf '\\nDone. Press enter to close... '; read _"
+		}
+	}
 	if helper := updater.AURHelper(); helper != "" && cfg.CheckAUR {
-		updateCommand = helper + " -Syu; printf '\\nDone. Press enter to close... '; read _"
+		if len(packages) == 0 {
+			updateCommand = helper + " -Syu; printf '\\nDone. Press enter to close... '; read _"
+		}
 	}
 
 	candidates := []string{}
@@ -334,6 +359,37 @@ func terminalCommand(cfg config.Config) (string, []string, error) {
 	return "", nil, errors.New("no supported terminal found; set one in settings")
 }
 
+func shellPackageList(packages []string) string {
+	quoted := []string{}
+	seen := map[string]bool{}
+	for _, pkg := range packages {
+		pkg = strings.TrimSpace(pkg)
+		if pkg == "" || seen[pkg] || !validPackageName(pkg) {
+			continue
+		}
+		seen[pkg] = true
+		quoted = append(quoted, shellQuote(pkg))
+	}
+	return strings.Join(quoted, " ")
+}
+
+func validPackageName(value string) bool {
+	for _, r := range value {
+		if r >= 'a' && r <= 'z' || r >= 'A' && r <= 'Z' || r >= '0' && r <= '9' {
+			continue
+		}
+		if strings.ContainsRune("@._+-", r) {
+			continue
+		}
+		return false
+	}
+	return true
+}
+
+func shellQuote(value string) string {
+	return "'" + strings.ReplaceAll(value, "'", "'\\''") + "'"
+}
+
 func openURL(url string) error {
 	switch runtime.GOOS {
 	case "linux":