Move wisski instance code to separate package

internal/wisski/info.go

@@ -0,0 +1,119 @@
+package wisski
+
+import (
+	"time"
+
+	"github.com/FAU-CDI/wisski-distillery/internal/models"
+	"github.com/tkw1536/goprogram/stream"
+	"golang.org/x/sync/errgroup"
+)
+
+// WissKIInfo represents information about this WissKI Instance.
+type WissKIInfo struct {
+	Time time.Time // Time this info was built
+
+	// Generic Information
+	Slug string // slug
+	URL  string // complete URL, including http(s)
+
+	Locked bool // Is this instance currently locked?
+
+	// Information about the running instance
+	Running     bool
+	LastRebuild time.Time
+	LastUpdate  time.Time
+	LastCron    time.Time
+
+	// List of backups made
+	Snapshots []models.Export
+
+	// WissKI content information
+	NoPrefixes   bool              // TODO: Move this into the database
+	Prefixes     []string          // list of prefixes
+	Pathbuilders map[string]string // all the pathbuilders
+}
+
+// Info fetches information about this WissKI.
+// TODO: Rework this to be able to determine what kind of information is available.
+func (wisski *WissKI) Info(quick bool) (info WissKIInfo, err error) {
+	var group errgroup.Group
+	wisski.infoQuick(&info, &group)
+
+	if !quick {
+		server, err := wisski.NewPHPServer()
+		if err == nil {
+			defer server.Close()
+		}
+		wisski.infoSlow(&info, server, &group)
+	}
+
+	err = group.Wait()
+	return
+}
+
+func (wisski *WissKI) infoQuick(info *WissKIInfo, group *errgroup.Group) {
+	info.Time = time.Now().UTC()
+	info.Slug = wisski.Slug
+	info.URL = wisski.URL().String()
+
+	group.Go(func() (err error) {
+		info.Running, err = wisski.Running()
+		return
+	})
+
+	group.Go(func() (err error) {
+		info.Locked = wisski.IsLocked()
+		return
+	})
+
+	group.Go(func() (err error) {
+		info.LastRebuild, _ = wisski.LastRebuild()
+		return
+	})
+
+	group.Go(func() (err error) {
+		info.LastUpdate, _ = wisski.LastUpdate()
+		return
+	})
+
+	group.Go(func() (err error) {
+		info.LastRebuild, _ = wisski.LastRebuild()
+		return
+	})
+
+	group.Go(func() (err error) {
+		info.NoPrefixes = wisski.NoPrefix()
+		return
+	})
+}
+
+func (wisski *WissKI) infoSlow(info *WissKIInfo, server *PHPServer, group *errgroup.Group) {
+	group.Go(func() (err error) {
+		info.Prefixes, _ = wisski.Prefixes(server)
+		return nil
+	})
+
+	group.Go(func() (err error) {
+		info.Snapshots, _ = wisski.Snapshots()
+		return nil
+	})
+
+	group.Go(func() (err error) {
+		info.Pathbuilders, _ = wisski.AllPathbuilders(server)
+		return nil
+	})
+
+	group.Go(func() (err error) {
+		info.LastCron, _ = wisski.LastCron(server)
+		return
+	})
+}
+
+// Running checks if this WissKI is currently running.
+func (wisski *WissKI) Running() (bool, error) {
+	ps, err := wisski.Barrel().Ps(stream.FromNil())
+	if err != nil {
+		return false, err
+	}
+	return len(ps) > 0, nil
+}