cmd: ollama menu and launch improvements (#14038)

cmd/config/config.go

@@ -3,12 +3,15 @@
 package config
 
 import (
+	"context"
 	"encoding/json"
 	"errors"
 	"fmt"
 	"os"
 	"path/filepath"
 	"strings"
+
+	"github.com/ollama/ollama/api"
 )
 
 type integration struct {
@@ -17,7 +20,9 @@ type integration struct {
 }
 
 type config struct {
-	Integrations map[string]*integration `json:"integrations"`
+	Integrations  map[string]*integration `json:"integrations"`
+	LastModel     string                  `json:"last_model,omitempty"`
+	LastSelection string                  `json:"last_selection,omitempty"` // "run" or integration name
 }
 
 func configPath() (string, error) {
@@ -146,6 +151,74 @@ func saveIntegration(appName string, models []string) error {
 	return save(cfg)
 }
 
+// IntegrationModel returns the first configured model for an integration, or empty string if not configured.
+func IntegrationModel(appName string) string {
+	ic, err := loadIntegration(appName)
+	if err != nil || len(ic.Models) == 0 {
+		return ""
+	}
+	return ic.Models[0]
+}
+
+// LastModel returns the last model that was run, or empty string if none.
+func LastModel() string {
+	cfg, err := load()
+	if err != nil {
+		return ""
+	}
+	return cfg.LastModel
+}
+
+// SetLastModel saves the last model that was run.
+func SetLastModel(model string) error {
+	cfg, err := load()
+	if err != nil {
+		return err
+	}
+	cfg.LastModel = model
+	return save(cfg)
+}
+
+// LastSelection returns the last menu selection ("run" or integration name), or empty string if none.
+func LastSelection() string {
+	cfg, err := load()
+	if err != nil {
+		return ""
+	}
+	return cfg.LastSelection
+}
+
+// SetLastSelection saves the last menu selection ("run" or integration name).
+func SetLastSelection(selection string) error {
+	cfg, err := load()
+	if err != nil {
+		return err
+	}
+	cfg.LastSelection = selection
+	return save(cfg)
+}
+
+// ModelExists checks if a model exists on the Ollama server.
+func ModelExists(ctx context.Context, name string) bool {
+	if name == "" {
+		return false
+	}
+	client, err := api.ClientFromEnvironment()
+	if err != nil {
+		return false
+	}
+	models, err := client.List(ctx)
+	if err != nil {
+		return false
+	}
+	for _, m := range models.Models {
+		if m.Name == name || strings.HasPrefix(m.Name, name+":") {
+			return true
+		}
+	}
+	return false
+}
+
 func loadIntegration(appName string) (*integration, error) {
 	cfg, err := load()
 	if err != nil {