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package app
import (
"context"
"fmt"
"log"
"sync"
"hakurei.app/hst"
"hakurei.app/internal/app/state"
"hakurei.app/internal/sys"
)
func New(ctx context.Context, os sys.State) (*App, error) {
a := new(App)
a.sys = os
a.ctx = ctx
id := new(state.ID)
err := state.NewAppID(id)
a.id = newID(id)
return a, err
}
func MustNew(ctx context.Context, os sys.State) *App {
a, err := New(ctx, os)
if err != nil {
log.Fatalf("cannot create app: %v", err)
}
return a
}
type App struct {
id *stringPair[state.ID]
sys sys.State
ctx context.Context
*outcome
mu sync.RWMutex
}
// ID returns a copy of [state.ID] held by App.
func (a *App) ID() state.ID { a.mu.RLock(); defer a.mu.RUnlock(); return a.id.unwrap() }
func (a *App) String() string {
if a == nil {
return "(invalid app)"
}
a.mu.RLock()
defer a.mu.RUnlock()
if a.outcome != nil {
if a.outcome.user.uid == nil {
return fmt.Sprintf("(sealed app %s with invalid uid)", a.id)
}
return fmt.Sprintf("(sealed app %s as uid %s)", a.id, a.outcome.user.uid)
}
return fmt.Sprintf("(unsealed app %s)", a.id)
}
// Seal determines the outcome of [hst.Config] as a [SealedApp].
// Values stored in and referred to by [hst.Config] might be overwritten and must not be used again.
func (a *App) Seal(config *hst.Config) (SealedApp, error) {
a.mu.Lock()
defer a.mu.Unlock()
if a.outcome != nil {
panic("app sealed twice")
}
seal := new(outcome)
seal.id = a.id
err := seal.finalise(a.ctx, a.sys, config)
if err == nil {
a.outcome = seal
}
return seal, err
}
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