add beginning of CLI app and some backend fixes.

app/client/client.go

@@ -0,0 +1,136 @@
+package client
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"git.aiterp.net/lucifer/new-server/models"
+	"io"
+	"net"
+	"net/http"
+	"strings"
+	"time"
+)
+
+type Client struct {
+	APIRoot string
+}
+
+func (client *Client) GetDevices(ctx context.Context, fetchStr string) ([]models.Device, error) {
+	devices := make([]models.Device, 0, 16)
+	err := client.Fetch(ctx, "GET", "/api/devices/"+fetchStr, &devices, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return devices, nil
+}
+
+func (client *Client) PutDevice(ctx context.Context, fetchStr string, update models.DeviceUpdate) ([]models.Device, error) {
+	devices := make([]models.Device, 0, 16)
+	err := client.Fetch(ctx, "PUT", "/api/devices/"+fetchStr, &devices, update)
+	if err != nil {
+		return nil, err
+	}
+
+	return devices, nil
+}
+
+func (client *Client) PutDeviceState(ctx context.Context, fetchStr string, update models.NewDeviceState) ([]models.Device, error) {
+	devices := make([]models.Device, 0, 16)
+	err := client.Fetch(ctx, "PUT", "/api/devices/"+fetchStr+"/state", &devices, update)
+	if err != nil {
+		return nil, err
+	}
+
+	return devices, nil
+}
+
+func (client *Client) PutDeviceTags(ctx context.Context, fetchStr string, addTags []string, removeTags []string) ([]models.Device, error) {
+	devices := make([]models.Device, 0, 16)
+	err := client.Fetch(ctx, "PUT", "/api/devices/"+fetchStr+"/tags", &devices, map[string][]string{
+		"add":    addTags,
+		"remove": removeTags,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	return devices, nil
+}
+
+func (client *Client) FireEvent(ctx context.Context, event models.Event) error {
+	err := client.Fetch(ctx, "POST", "/api/events", nil, event)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (client *Client) Fetch(ctx context.Context, method string, path string, dst interface{}, body interface{}) error {
+	var reqBody io.ReadWriter
+	if body != nil && method != "GET" {
+		reqBody = bytes.NewBuffer(make([]byte, 0, 512))
+
+		err := json.NewEncoder(reqBody).Encode(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	req, err := http.NewRequest(method, client.APIRoot+path, reqBody)
+	if err != nil {
+		return err
+	}
+
+	res, err := httpClient.Do(req.WithContext(ctx))
+	if err != nil {
+		return err
+	}
+	defer res.Body.Close()
+
+	if !strings.HasPrefix(res.Header.Get("Content-Type"), "application/json") {
+		return fmt.Errorf("%s: %s", path, res.Status)
+	}
+
+	var resJson struct {
+		Code    int             `json:"code"`
+		Message *string         `json:"message"`
+		Data    json.RawMessage `json:"data"`
+	}
+	err = json.NewDecoder(res.Body).Decode(&resJson)
+	if err != nil {
+		return err
+	}
+
+	if resJson.Code != 200 {
+		msg := ""
+		if resJson.Message != nil {
+			msg = *resJson.Message
+		}
+
+		return fmt.Errorf("%d: %s", resJson.Code, msg)
+	}
+
+	if dst == nil {
+		return nil
+	}
+
+	return json.Unmarshal(resJson.Data, dst)
+}
+
+var httpClient = &http.Client{
+	Transport: &http.Transport{
+		Proxy: http.ProxyFromEnvironment,
+		DialContext: (&net.Dialer{
+			Timeout:   30 * time.Second,
+			KeepAlive: 30 * time.Second,
+		}).DialContext,
+		MaxIdleConns:        16,
+		MaxIdleConnsPerHost: 16,
+		IdleConnTimeout:     time.Minute,
+	},
+	Timeout: time.Minute,
+}