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loader.go
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loader.go
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package app
import (
"fmt"
"io/fs"
"github.com/livebud/bud/framework"
"github.com/livebud/bud/internal/bail"
"github.com/livebud/bud/internal/imports"
"github.com/livebud/bud/package/di"
"github.com/livebud/bud/package/gomod"
"github.com/livebud/bud/package/vfs"
)
func Load(fsys fs.FS, injector *di.Injector, module *gomod.Module, flag *framework.Flag) (*State, error) {
if err := vfs.Exist(fsys, "bud/internal/web/web.go"); err != nil {
return nil, err
}
return (&loader{
fsys: fsys,
injector: injector,
module: module,
flag: flag,
imports: imports.New(),
}).Load()
}
type loader struct {
fsys fs.FS
injector *di.Injector
module *gomod.Module
flag *framework.Flag
imports *imports.Set
bail.Struct
}
func (l *loader) Load() (state *State, err error) {
defer l.Recover2(&err, "app: unable to load state")
state = new(State)
l.imports.AddStd("os", "context", "errors")
l.imports.AddNamed("commander", "github.com/livebud/bud/package/commander")
l.imports.AddNamed("console", "github.com/livebud/bud/package/log/console")
l.imports.AddNamed("levelfilter", "github.com/livebud/bud/package/log/levelfilter")
l.imports.AddNamed("log", "github.com/livebud/bud/package/log")
l.imports.AddNamed("budhttp", "github.com/livebud/bud/package/budhttp")
l.imports.Add(l.module.Import("bud/internal/web"))
state.Provider = l.loadProvider()
state.Flag = l.flag
state.Imports = l.imports.List()
return state, nil
}
func (l *loader) loadProvider() *di.Provider {
jsVM := di.ToType("github.com/livebud/bud/package/js", "VM")
// TODO: the public generator should be able to configure this
publicFS := di.ToType("github.com/livebud/bud/framework/public/publicrt", "FS")
viewFS := di.ToType("github.com/livebud/bud/framework/view/viewrt", "FS")
fn := &di.Function{
Name: "loadWeb",
Imports: l.imports,
Target: l.module.Import("bud", "program"),
Params: []*di.Param{
{Import: "github.com/livebud/bud/package/log", Type: "Log"},
{Import: "github.com/livebud/bud/package/gomod", Type: "*Module"},
{Import: "github.com/livebud/bud/package/budhttp", Type: "Client"},
{Import: "github.com/livebud/bud/package/remotefs", Type: "*Client"},
{Import: "context", Type: "Context"},
},
Results: []di.Dependency{
di.ToType(l.module.Import("bud/internal/web"), "*Server"),
&di.Error{},
},
Aliases: di.Aliases{
publicFS: di.ToType("github.com/livebud/bud/package/remotefs", "*Client"),
viewFS: di.ToType("github.com/livebud/bud/package/remotefs", "*Client"),
jsVM: di.ToType("github.com/livebud/bud/package/budhttp", "Client"),
},
}
if l.flag.Embed {
fn.Aliases[jsVM] = di.ToType("github.com/livebud/bud/package/js/v8", "*VM")
fn.Aliases[publicFS] = di.ToType(l.module.Import("bud/internal/web/public"), "FS")
fn.Aliases[viewFS] = di.ToType(l.module.Import("bud/internal/web/view"), "FS")
}
provider, err := l.injector.Wire(fn)
if err != nil {
// Intentionally don't wrap this error, it gets swallowed up too easily
l.Bail(fmt.Errorf("app: unable to wire. %s", err))
}
// Add generated imports
for _, imp := range provider.Imports {
l.imports.AddNamed(imp.Name, imp.Path)
}
return provider
}