1 files changed, 83 insertions, 0 deletions
diff --git a/history.go b/history.go
new file mode 100644
index 0000000..1a9f044
--- /dev/null
+++ b/history.go
@@ -0,0 +1,83 @@
+package prep
+
+// essentially .bash_history, but in a protobuf and for any shell
+// stores files ./cache/argv/<appname>.pb
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+
+	"go.wit.com/lib/config"
+	durationpb "google.golang.org/protobuf/types/known/durationpb"
+	timestamppb "google.golang.org/protobuf/types/known/timestamppb"
+)
+
+func (pb *Auto) doHandlePB() error {
+	return pb.readConfigPB()
+}
+
+// makes a bash autocomplete file for your command
+func (pb *Auto) readConfigPB() error {
+	cacheDir, err := os.UserCacheDir()
+	if err != nil {
+		return err
+	}
+	basedir := filepath.Join(cacheDir, "argv")
+	os.MkdirAll(basedir, os.ModePerm)
+	fullname := filepath.Join(basedir, pb.Argname+".pb")
+
+	all := NewAutos()
+	var last *Auto
+	data, err := os.ReadFile(fullname)
+	if err == nil {
+		err = all.Unmarshal(data)
+		if err == nil {
+			for found := range all.IterAll() {
+				dur := time.Since(found.Ctime.AsTime())
+				pb.Duration = durationpb.New(dur)
+				// found.PrintDebug()
+				cmd := fmt.Sprintf("cmd='%s'", found.Cmd)
+				arglast := fmt.Sprintf("last='%s'", found.Last)
+				partial := fmt.Sprintf("p='%s'", found.Partial)
+				age := fmt.Sprintf("age='%-6.6s'", config.FormatDuration(dur))
+				pb.Debugf("AUTO HISTORY: %s %-18.18s %-18.18s %-12.12s argv='%v' goargs='%v'", age, cmd, arglast, partial, found.Argv, found.Goargs)
+				last = found
+			}
+		}
+	}
+
+	if all.Len() > 15 {
+		pb.Debugf("DEBUG: trim() history is over 100 len=%d vs new=%d", all.Len(), all.Len()-90)
+		all.Autos = all.Autos[all.Len()-10:]
+		// newall.Autos = all.Autos[0:10]
+		// for _, found := range all.Autos[0:10] {
+		// 	newall.Append(found)
+		// }
+	}
+
+	// need this for the first time the user runs autocomplete
+	if last == nil {
+		last = new(Auto)
+	}
+
+	now := time.Now()
+	pb.Ctime = timestamppb.New(now)
+	duration := time.Since(last.Ctime.AsTime())
+	all.Append(pb)
+
+	data, err = all.Marshal()
+	if err != nil {
+		return err
+	}
+
+	f, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
+	defer f.Close()
+	if err != nil {
+		return err
+	}
+	_, err = f.Write(data)
+	pb.Debugf("WRITE DEBUG: write PB='%s' len(pb)=%d len(data)=%d dur=%v err=%v", fullname, all.Len(), len(data), duration, err)
+	return err
+}