package shroom

import (
	"errors"
	"fmt"

	"github.com/bouncepaw/mycorrhiza/history"
	"github.com/bouncepaw/mycorrhiza/hyphae"
	"github.com/bouncepaw/mycorrhiza/user"
)

// UnattachHypha unattaches hypha and makes a history record about that.
func UnattachHypha(u *user.User, h *hyphae.Hypha) (hop *history.HistoryOp, errtitle string) {
	hop = history.Operation(history.TypeUnattachHypha)

	if err, errtitle := CanUnattach(u, h); errtitle != "" {
		hop.WithErrAbort(err)
		return hop, errtitle
	}

	hop.
		WithFilesRemoved(h.BinaryPath).
		WithMsg(fmt.Sprintf("Unattach ‘%s’", h.Name)).
		WithUser(u).
		Apply()

	if len(hop.Errs) > 0 {
		rejectUnattachLog(h, u, "fail")
		// FIXME: something may be wrong here
		return hop.WithErrAbort(errors.New(fmt.Sprintf("Could not unattach this hypha due to internal server errors: <code>%v</code>", hop.Errs))), "Error"
	}

	if h.BinaryPath != "" {
		h.BinaryPath = ""
	}
	// If nothing is left of the hypha
	if h.TextPath == "" {
		h.Delete()
	}
	return hop, ""
}