package i3

import "encoding/json"

// WorkspaceID is an i3-internal ID for the node, which can be used to identify
// workspaces within the IPC interface.
type WorkspaceID int64

// Workspace describes an i3 workspace.
//
// See https://i3wm.org/docs/ipc.html#_workspaces_reply for more details.
type Workspace struct {
	ID      WorkspaceID `json:"id"`
	Num     int64       `json:"num"`
	Name    string      `json:"name"`
	Visible bool        `json:"visible"`
	Focused bool        `json:"focused"`
	Urgent  bool        `json:"urgent"`
	Rect    Rect        `json:"rect"`
	Output  string      `json:"output"`
}

// GetWorkspaces returns i3’s current workspaces.
//
// GetWorkspaces is supported in i3 ≥ v4.0 (2011-07-31).
func GetWorkspaces() ([]Workspace, error) {
	reply, err := roundTrip(messageTypeGetWorkspaces, nil)
	if err != nil {
		return nil, err
	}

	var ws []Workspace
	err = json.Unmarshal(reply.Payload, &ws)
	return ws, err
}