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package cli
import (
"context"
"encoding/json"
"fmt"
cliContext "github.com/mudler/LocalAI/core/cli/context"
"github.com/mudler/LocalAI/core/config"
"github.com/mudler/LocalAI/core/gallery"
"github.com/mudler/LocalAI/core/services"
"github.com/mudler/LocalAI/pkg/model"
"github.com/mudler/LocalAI/pkg/system"
"github.com/mudler/xlog"
"github.com/schollz/progressbar/v3"
)
type BackendsCMDFlags struct {
BackendGalleries string `env:"LOCALAI_BACKEND_GALLERIES,BACKEND_GALLERIES" help:"JSON list of backend galleries" group:"backends" default:"${backends}"`
BackendsPath string `env:"LOCALAI_BACKENDS_PATH,BACKENDS_PATH" type:"path" default:"${basepath}/backends" help:"Path containing backends used for inferencing" group:"storage"`
BackendsSystemPath string `env:"LOCALAI_BACKENDS_SYSTEM_PATH,BACKEND_SYSTEM_PATH" type:"path" default:"/var/lib/local-ai/backends" help:"Path containing system backends used for inferencing" group:"backends"`
}
type BackendsList struct {
BackendsCMDFlags `embed:""`
}
type BackendsInstall struct {
BackendArgs string `arg:"" optional:"" name:"backend" help:"Backend configuration URL to load"`
Name string `arg:"" optional:"" name:"name" help:"Name of the backend"`
Alias string `arg:"" optional:"" name:"alias" help:"Alias of the backend"`
BackendsCMDFlags `embed:""`
}
type BackendsUninstall struct {
BackendArgs []string `arg:"" name:"backends" help:"Backend names to uninstall"`
BackendsCMDFlags `embed:""`
}
type BackendsCMD struct {
List BackendsList `cmd:"" help:"List the backends available in your galleries" default:"withargs"`
Install BackendsInstall `cmd:"" help:"Install a backend from the gallery"`
Uninstall BackendsUninstall `cmd:"" help:"Uninstall a backend"`
}
func (bl *BackendsList) Run(ctx *cliContext.Context) error {
var galleries []config.Gallery
if err := json.Unmarshal([]byte(bl.BackendGalleries), &galleries); err != nil {
xlog.Error("unable to load galleries", "error", err)
}
systemState, err := system.GetSystemState(
system.WithBackendSystemPath(bl.BackendsSystemPath),
system.WithBackendPath(bl.BackendsPath),
)
if err != nil {
return err
}
backends, err := gallery.AvailableBackends(galleries, systemState)
if err != nil {
return err
}
for _, backend := range backends {
if backend.Installed {
fmt.Printf(" * %s@%s (installed)\n", backend.Gallery.Name, backend.Name)
} else {
fmt.Printf(" - %s@%s\n", backend.Gallery.Name, backend.Name)
}
}
return nil
}
func (bi *BackendsInstall) Run(ctx *cliContext.Context) error {
var galleries []config.Gallery
if err := json.Unmarshal([]byte(bi.BackendGalleries), &galleries); err != nil {
xlog.Error("unable to load galleries", "error", err)
}
systemState, err := system.GetSystemState(
system.WithBackendSystemPath(bi.BackendsSystemPath),
system.WithBackendPath(bi.BackendsPath),
)
if err != nil {
return err
}
progressBar := progressbar.NewOptions(
1000,
progressbar.OptionSetDescription(fmt.Sprintf("downloading backend %s", bi.BackendArgs)),
progressbar.OptionShowBytes(false),
progressbar.OptionClearOnFinish(),
)
progressCallback := func(fileName string, current string, total string, percentage float64) {
v := int(percentage * 10)
err := progressBar.Set(v)
if err != nil {
xlog.Error("error while updating progress bar", "error", err, "filename", fileName, "value", v)
}
}
modelLoader := model.NewModelLoader(systemState)
err = services.InstallExternalBackend(context.Background(), galleries, systemState, modelLoader, progressCallback, bi.BackendArgs, bi.Name, bi.Alias)
if err != nil {
return err
}
return nil
}
func (bu *BackendsUninstall) Run(ctx *cliContext.Context) error {
for _, backendName := range bu.BackendArgs {
xlog.Info("uninstalling backend", "backend", backendName)
systemState, err := system.GetSystemState(
system.WithBackendSystemPath(bu.BackendsSystemPath),
system.WithBackendPath(bu.BackendsPath),
)
if err != nil {
return err
}
err = gallery.DeleteBackendFromSystem(systemState, backendName)
if err != nil {
return err
}
fmt.Printf("Backend %s uninstalled successfully\n", backendName)
}
return nil
}
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