first api code

i3ipc.go

@@ -0,0 +1,80 @@
+package i3ipc
+
+import (
+	"encoding/json"
+	"fmt"
+	"net"
+)
+
+const (
+	VERSION = "v0.1.0"
+
+	IPC_HEADER_SIZE = 14
+	IPC_MAGIC       = "i3-ipc"
+	IPC_MAGIC_LEN   = 6
+)
+
+const (
+	// message types
+	RUN_COMMAND = iota
+	GET_WORKSPACES
+	SUBSCRIBE
+	GET_OUTPUTS
+	GET_TREE
+	GET_MARKS
+	GET_BAR_CONFIG
+	GET_VERSION
+	GET_BINDING_MODES
+	GET_CONFIG
+	SEND_TICK
+	SYNC
+	GET_BINDING_STATE
+	GET_INPUTS
+	GET_SEATS
+)
+
+// module struct
+type I3ipc struct {
+	socket     net.Conn
+	SocketFile string
+}
+
+// i3-ipc structs
+type Rect struct {
+	X      int `json:"x"`
+	Y      int `json:"y"`
+	Width  int `json:"width"`
+	Height int `json:"height"`
+}
+
+type Response struct {
+	Success    bool   `json:"success"`
+	ParseError bool   `json:"parse_error"`
+	Error      string `json:"error"`
+}
+
+func NewI3ipc(file string) *I3ipc {
+	if file == "" {
+		file = "SWAYSOCK"
+	}
+	return &I3ipc{SocketFile: file}
+}
+
+func (ipc *I3ipc) GetTree() (*Node, error) {
+	err := ipc.sendHeader(GET_TREE, 0)
+	if err != nil {
+		return nil, err
+	}
+
+	payload, err := ipc.readResponse()
+	if err != nil {
+		return nil, err
+	}
+
+	node := &Node{}
+	if err := json.Unmarshal(payload, &node); err != nil {
+		return nil, fmt.Errorf("failed to unmarshal json: %w", err)
+	}
+
+	return node, nil
+}